updated version number to 0.17.0

Update step_logger

.clang-format

@@ -1,19 +1,108 @@
 ---
 Language:        Cpp
-BasedOnStyle:  Google
+# BasedOnStyle:  LLVM
 AccessModifierOffset: -4
-Standard:        c++17
+AlignAfterOpenBracket: DontAlign
+AlignConsecutiveAssignments: false
+AlignConsecutiveDeclarations: false
+AlignEscapedNewlines: Right
+AlignOperands:   true
+AlignTrailingComments: true
+AllowAllParametersOfDeclarationOnNextLine: true
+AllowShortBlocksOnASingleLine: true
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: Empty
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakAfterDefinitionReturnType: None
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: false
+AlwaysBreakTemplateDeclarations: true
+BinPackArguments: true
+BinPackParameters: true
+BraceWrapping:     
+  AfterClass:      true
+  AfterControlStatement: true
+  AfterEnum:       true
+  AfterFunction:   true
+  AfterNamespace:  false
+  AfterObjCDeclaration: true
+  AfterStruct:     true
+  AfterUnion:      true
+  BeforeCatch:     true
+  BeforeElse:      true
+  IndentBraces:    false
+  SplitEmptyFunction: true
+  SplitEmptyRecord: true
+  SplitEmptyNamespace: true
+BreakBeforeBinaryOperators: None
+BreakBeforeBraces: Custom
+BreakBeforeInheritanceComma: false
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializersBeforeComma: true
+BreakConstructorInitializers: BeforeColon
+BreakAfterJavaFieldAnnotations: false
+BreakStringLiterals: true
+ColumnLimit:     140
+CommentPragmas:  '^ IWYU pragma:'
+CompactNamespaces:  false
+ConstructorInitializerAllOnOneLineOrOnePerLine: false
+ConstructorInitializerIndentWidth: 4
+ContinuationIndentWidth: 4
+Cpp11BracedListStyle: true
+DerivePointerAlignment: false
+DisableFormat:   false
+ExperimentalAutoDetectBinPacking: false
+FixNamespaceComments: true
+ForEachMacros:   
+  - foreach
+  - Q_FOREACH
+  - BOOST_FOREACH
+IncludeCategories: 
+  - Regex:           '^"(llvm|llvm-c|clang|clang-c)/'
+    Priority:        2
+  - Regex:           '^(<|"(gtest|gmock|isl|json)/)'
+    Priority:        3
+  - Regex:           '.*'
+    Priority:        1
+IncludeIsMainRegex: '(Test)?$'
+IndentCaseLabels: false
 IndentWidth:     4
-TabWidth:        4
+IndentWrappedFunctionNames: false
+JavaScriptQuotes: Leave
+JavaScriptWrapImports: true
+KeepEmptyLinesAtTheStartOfBlocks: true
+MacroBlockBegin: ''
+MacroBlockEnd:   ''
+MaxEmptyLinesToKeep: 1
+NamespaceIndentation: None
+ObjCBlockIndentWidth: 2
+ObjCSpaceAfterProperty: false
+ObjCSpaceBeforeProtocolList: true
+PenaltyBreakAssignment: 2
+PenaltyBreakBeforeFirstCallParameter: 19
+PenaltyBreakComment: 300
+PenaltyBreakFirstLessLess: 120
+PenaltyBreakString: 1000
+PenaltyExcessCharacter: 1000000
+PenaltyReturnTypeOnItsOwnLine: 60
+PointerAlignment: Right
+ReflowComments:  true
+SortIncludes:    true
+SortUsingDeclarations: true
+SpaceAfterCStyleCast: false
+SpaceAfterTemplateKeyword: false
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeParens: ControlStatements
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 1
+SpacesInAngles:  false
+SpacesInContainerLiterals: true
+SpacesInCStyleCastParentheses: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+Standard:        Cpp11
+TabWidth:        8
 UseTab:          Never
-ColumnLimit:     130
-AlignAfterOpenBracket: Align
-BinPackParameters: false
-AlignEscapedNewlines: Left
-AlwaysBreakTemplateDeclarations: Yes
-PackConstructorInitializers: Never
-BreakConstructorInitializersBeforeComma: false
-IndentPPDirectives: BeforeHash
-SortIncludes: CaseInsensitive
 ...
 

.clang-tidy

@@ -1,54 +0,0 @@
-Checks: 'cppcoreguidelines-*,
-performance-*,
-modernize-*,
-google-*,
-misc-*
-cert-*,
-readability-*,
-clang-analyzer-*,
--performance-unnecessary-value-param,
--modernize-use-trailing-return-type,
--google-runtime-references,
--misc-non-private-member-variables-in-classes,
--readability-braces-around-statements,
--readability-identifier-length,
--google-readability-braces-around-statements,
--cppcoreguidelines-avoid-magic-numbers,
--readability-magic-numbers,
--readability-magic-numbers,
--cppcoreguidelines-pro-type-vararg,
--cppcoreguidelines-pro-bounds-pointer-arithmetic,
--cppcoreguidelines-avoid-c-arrays,
--modernize-avoid-c-arrays,
--cppcoreguidelines-pro-bounds-array-to-pointer-decay,
--readability-named-parameter,
--cert-env33-c,
--modernize-concat-nested-namespaces,
--cppcoreguidelines-owning-memory
-'
-
-
-WarningsAsErrors: ''
-FormatStyle:     none
-
-CheckOptions:
-  - key:             google-readability-braces-around-statements.ShortStatementLines
-    value:           '1'
-  - key:             google-readability-function-size.StatementThreshold
-    value:           '800'
-  - key:             google-readability-namespace-comments.ShortNamespaceLines
-    value:           '10'
-  - key:             google-readability-namespace-comments.SpacesBeforeComments
-    value:           '2'
-  - key:             modernize-loop-convert.MaxCopySize
-    value:           '16'
-  - key:             modernize-loop-convert.MinConfidence
-    value:           reasonable
-  - key:             modernize-loop-convert.NamingStyle
-    value:           CamelCase
-  - key:             modernize-pass-by-value.IncludeStyle
-    value:           llvm
-  - key:             modernize-replace-auto-ptr.IncludeStyle
-    value:           llvm
-  - key:             modernize-use-nullptr.NullMacros
-    value:           'NULL'

.gitattributes

@@ -1 +0,0 @@
-* text=false

.github/workflows/linux.yml

@@ -1,61 +0,0 @@
-name: linux
-
-on: [push, pull_request]
-
-permissions:
-  contents: read
-
-jobs:
-  # -----------------------------------------------------------------------
-  # Linux build matrix
-  # -----------------------------------------------------------------------
-  build:
-    runs-on: ubuntu-latest
-    defaults:
-      run:
-        shell: bash
-    strategy:
-      fail-fast: false
-      matrix:
-        config:
-          - { compiler: gcc, version: 9, build_type: Release, cppstd: 17 }
-          - { compiler: gcc, version: 11, build_type: Debug, cppstd: 20 }
-          - { compiler: gcc, version: 12, build_type: Release, cppstd: 20 }
-          - { compiler: gcc, version: 12, build_type: Debug, cppstd: 20, asan: ON }
-          - { compiler: clang, version: 12, build_type: Debug, cppstd: 17 }
-          - { compiler: clang, version: 15, build_type: Debug, cppstd: 20, tsan: ON }
-    container:
-      image: ${{ matrix.config.compiler == 'clang' && 'teeks99/clang-ubuntu' || matrix.config.compiler }}:${{ matrix.config.version }}
-    name: "${{ matrix.config.compiler}} ${{ matrix.config.version }} (C++${{ matrix.config.cppstd }} ${{ matrix.config.build_type }} ${{ matrix.config.asan == 'ON' && 'ASAN' || '' }}${{ matrix.config.tsan == 'ON' && 'TSAN' || '' }})"
-    steps:
-      - uses: actions/checkout@v4
-      - name: Setup
-        run: |
-          apt-get update
-          apt-get install -y curl git pkg-config libsystemd-dev
-          CMAKE_VERSION="3.24.2"
-          curl -sSL https://github.com/Kitware/CMake/releases/download/v${CMAKE_VERSION}/cmake-${CMAKE_VERSION}-linux-x86_64.sh -o install-cmake.sh
-          chmod +x install-cmake.sh
-          ./install-cmake.sh --prefix=/usr/local --skip-license
-      - name: Setup Compiler
-        if: matrix.config.compiler == 'clang'
-        run: |
-          scripts/ci_setup_clang.sh "${{ matrix.config.version }}"
-          echo "CXXFLAGS=-stdlib=libc++" >> $GITHUB_ENV          
-          echo "CC=clang-${{ matrix.config.version }}" >> $GITHUB_ENV
-          echo "CXX=clang++-${{ matrix.config.version }}" >> $GITHUB_ENV
-      - name: Build
-        run: |
-          mkdir -p build && cd build
-          cmake .. \
-            -DCMAKE_BUILD_TYPE=${{ matrix.config.build_type }} \
-            -DCMAKE_CXX_STANDARD=${{ matrix.config.cppstd }} \
-            -DSPDLOG_BUILD_EXAMPLE=${{ matrix.config.examples || 'ON' }} \
-            -DSPDLOG_BUILD_WARNINGS=ON \
-            -DSPDLOG_BUILD_BENCH=OFF \
-            -DSPDLOG_BUILD_TESTS=ON \
-            -DSPDLOG_SANITIZE_ADDRESS=${{ matrix.config.asan || 'OFF' }} \
-            -DSPDLOG_SANITIZE_ADDRESS=${{ matrix.config.asan || 'OFF' }} \
-            -DSPDLOG_SANITIZE_THREAD=${{ matrix.config.tsan || 'OFF' }}
-          make -j 4
-          ctest -j 4 --output-on-failure          

.github/workflows/macos.yml

@@ -1,26 +0,0 @@
-name: macos
-
-on: [push, pull_request]
-
-permissions:
-  contents: read
-
-jobs:
-  build:
-    runs-on: macOS-latest
-    name: "macOS Clang (C++17, Release)"
-    steps:
-      - uses: actions/checkout@v4
-      - name: Build
-        run: |
-          mkdir -p build && cd build
-          cmake .. \
-            -DCMAKE_BUILD_TYPE=Release \
-            -DCMAKE_CXX_STANDARD=17 \
-            -DSPDLOG_BUILD_EXAMPLE=ON \
-            -DSPDLOG_BUILD_WARNINGS=ON \
-            -DSPDLOG_BUILD_BENCH=OFF \
-            -DSPDLOG_BUILD_TESTS=ON \
-            -DSPDLOG_SANITIZE_ADDRESS=OFF
-          make -j 4
-          ctest -j 4 --output-on-failure

.github/workflows/windows.yml

@@ -1,113 +0,0 @@
-name: windows
-
-on: [push, pull_request]
-
-permissions:
-  contents: read
-
-jobs:
-  build:
-    runs-on: windows-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        config:
-          - GENERATOR: "Visual Studio 17 2022"
-            BUILD_TYPE: Release
-            BUILD_SHARED: 'ON'
-            FATAL_ERRORS: 'ON'
-            BUILD_EXAMPLE: 'OFF'
-            CXX_STANDARD: 20
-          - GENERATOR: "Visual Studio 17 2022"
-            BUILD_TYPE: Release
-            BUILD_SHARED: 'ON'
-            FATAL_ERRORS: 'ON'
-            BUILD_EXAMPLE: 'OFF'
-            CXX_STANDARD: 17
-          - GENERATOR: "Visual Studio 17 2022"
-            BUILD_TYPE: Release
-            BUILD_SHARED: 'OFF'
-            FATAL_ERRORS: 'ON'
-            BUILD_EXAMPLE: 'ON'
-            CXX_STANDARD: 17
-
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: CMake ${{ matrix.config.GENERATOR }} CXX=${{matrix.config.CXX_STANDARD}}
-        shell: pwsh
-        run: |
-          mkdir build
-          cd build
-          cmake -G "${{ matrix.config.GENERATOR }}"  -A x64 `
-            -D CMAKE_BUILD_TYPE=${{ matrix.config.BUILD_TYPE }} `
-            -D BUILD_SHARED_LIBS=${{ matrix.config.BUILD_SHARED }} `
-            -D SPDLOG_BUILD_EXAMPLE=${{ matrix.config.BUILD_EXAMPLE }} `
-            -D SPDLOG_BUILD_TESTS=ON `
-            -D SPDLOG_BUILD_WARNINGS=${{ matrix.config.FATAL_ERRORS }} `
-            -D CMAKE_CXX_STANDARD=${{ matrix.config.CXX_STANDARD }} ..
-
-      - name: Build
-        shell: pwsh
-        run: |
-          cd build
-          cmake --build  . --parallel --config ${{ matrix.config.BUILD_TYPE }}
-
-      - name: Run Tests
-        shell: pwsh
-        env:
-          PATH: ${{ env.PATH }};${{ github.workspace }}\build\_deps\catch2-build\src\${{ matrix.config.BUILD_TYPE }};${{ github.workspace }}\build\bin\${{ matrix.config.BUILD_TYPE }}
-        run: ${{ github.workspace }}\build\bin\${{ matrix.config.BUILD_TYPE }}\spdlog-utests.exe
-
-
-  # -----------------------------------------------------------------------
-  # MSVC 2019 build matrix
-  # -----------------------------------------------------------------------
-  build_2019:
-    runs-on: windows-2019
-    strategy:
-      fail-fast: true
-      matrix:
-        config:
-          - GENERATOR: "Visual Studio 16 2019"
-            BUILD_TYPE: Release
-            BUILD_SHARED: 'ON'
-            FATAL_ERRORS: 'ON'
-            BUILD_EXAMPLE: 'ON'
-            CXX_STANDARD: 17
-          - GENERATOR: "Visual Studio 16 2019"
-            BUILD_TYPE: Release
-            BUILD_SHARED: 'ON'
-            FATAL_ERRORS: 'ON'
-            BUILD_EXAMPLE: 'ON'
-            CXX_STANDARD: 20
-
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: CMake ${{ matrix.config.GENERATOR }} CXX=${{matrix.config.CXX_STANDARD}}
-        shell: pwsh
-        run: |
-          mkdir build
-          cd build
-          cmake -G "${{ matrix.config.GENERATOR }}"  -A x64 `
-            -D CMAKE_BUILD_TYPE=${{ matrix.config.BUILD_TYPE }} `
-            -D BUILD_SHARED_LIBS=${{ matrix.config.BUILD_SHARED }} `
-            -D SPDLOG_BUILD_EXAMPLE=${{ matrix.config.BUILD_EXAMPLE }} `
-            -D SPDLOG_BUILD_TESTS=ON `
-            -D SPDLOG_BUILD_WARNINGS=${{ matrix.config.FATAL_ERRORS }} `
-            -D CMAKE_CXX_STANDARD=${{ matrix.config.CXX_STANDARD }} ..
-
-      - name: Build
-        shell: pwsh
-        run: |
-          cd build
-          cmake --build  . --parallel --config ${{ matrix.config.BUILD_TYPE }}
-
-      - name: Run Tests
-        shell: pwsh
-        env:
-          PATH: ${{ env.PATH }};${{ github.workspace }}\build\_deps\catch2-build\src\${{ matrix.config.BUILD_TYPE }};${{ github.workspace }}\build\bin\${{ matrix.config.BUILD_TYPE }}
-        run: ${{ github.workspace }}\build\bin\${{ matrix.config.BUILD_TYPE }}\spdlog-utests.exe

.gitignore

@@ -1,7 +1,4 @@
 # Auto generated files
-include/spdlog/spdlog_config.h
-[Dd]ebug/
-[Rr]elease/
 build/*
 *.slo
 *.lo
@@ -37,16 +34,23 @@ build/*
 # Codelite
 .codelite
 
-# KDevelop
-*.kdev4
-
 # .orig files
 *.orig
 
+# example  files
+example/*
+!example/example.cpp
+!example/bench.cpp
+!example/utils.h
+!example/Makefile*
+!example/example.sln
+!example/example.vcxproj
+!example/CMakeLists.txt
+!example/multisink.cpp
+!example/jni
 
 # generated files
 generated
-version.rc
 
 # Cmake
 CMakeCache.txt
@@ -59,29 +63,9 @@ install_manifest.txt
 /tests/tests.VC.db
 /tests/tests
 /tests/logs/*
-spdlogConfig.cmake
-spdlogConfigVersion.cmake
-compile_commands.json
 
 # idea
 .idea/
-.cache/
-.vscode/
-cmake-build-*/
-*.db
-*.ipch
-*.filters
-*.db-wal
-*.opendb
-*.db-shm
-*.vcxproj
-*.tcl
-*.user
-*.sln
 
-# macos
-*.DS_store
-*.xcodeproj/
-/.vs
-/out/build
-/CMakeSettings.json
+# vscode
+.vscode/

.travis.yml

@@ -0,0 +1,91 @@
+# Adapted from various sources, including:
+# - Louis Dionne's Hana: https://github.com/ldionne/hana
+# - Paul Fultz II's FIT: https://github.com/pfultz2/Fit
+# - Eric Niebler's range-v3: https://github.com/ericniebler/range-v3
+language: cpp
+
+# Test matrix:
+# - Build matrix per compiler: C++11/C++14 + Debug/Release
+# - Optionally: AddressSanitizer (ASAN)
+# - Valgrind: all release builds are also tested with valgrind
+# - clang 3.4, 3.5, 3.6, trunk
+#   - Note: 3.4 and trunk are tested with/without ASAN,
+#     the rest is only tested with ASAN=On.
+# - gcc 4.9, 5.0
+#
+matrix:
+  include:
+   
+# Test gcc-4.8: C++11, Build=Debug/Release, ASAN=Off
+    - env: GCC_VERSION=4.8 BUILD_TYPE=Debug CPP=11 ASAN=Off LIBCXX=Off
+      os: linux
+      addons: &gcc48
+        apt:
+          packages:
+            - g++-4.8
+            - valgrind
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - env: GCC_VERSION=4.8 BUILD_TYPE=Release CPP=11 ASAN=Off LIBCXX=Off
+      os: linux
+      addons: *gcc48
+      
+    # Test gcc-4.9: C++11, Build=Debug/Release, ASAN=Off
+    - env: GCC_VERSION=4.9 BUILD_TYPE=Debug CPP=11 ASAN=Off LIBCXX=Off
+      os: linux
+      addons: &gcc49
+        apt:
+          packages:
+            - g++-4.9
+            - valgrind
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - env: GCC_VERSION=4.9 BUILD_TYPE=Release CPP=11 ASAN=Off LIBCXX=Off
+      os: linux
+      addons: *gcc49
+
+# Install dependencies
+before_install:
+  - export CHECKOUT_PATH=`pwd`;
+  - if [ -n "$GCC_VERSION" ]; then export CXX="g++-${GCC_VERSION}" CC="gcc-${GCC_VERSION}"; fi
+  - if [ -n "$CLANG_VERSION" ]; then export CXX="clang++-${CLANG_VERSION}" CC="clang-${CLANG_VERSION}"; fi
+  - if [ "$CLANG_VERSION" == "3.4" ]; then export CXX="/usr/local/clang-3.4/bin/clang++" CC="/usr/local/clang-3.4/bin/clang"; fi
+  - which $CXX
+  - which $CC
+  - which valgrind
+  - if [ -n "$CLANG_VERSION" ]; then sudo CXX=$CXX CC=$CC ./tests/install_libcxx.sh; fi
+
+install:
+  - cd $CHECKOUT_PATH
+
+  # Workaround for valgrind bug: https://bugs.kde.org/show_bug.cgi?id=326469.
+  # It is fixed in valgrind 3.10 so this won't be necessary if someone
+  # replaces the current valgrind (3.7) with valgrind-3.10
+  - sed -i 's/march=native/msse4.2/' example/Makefile
+
+  - if [ ! -d build ]; then mkdir build; fi
+  - export CXX_FLAGS="-I${CHECKOUT_PATH}/include"
+  - export CXX_LINKER_FLAGS=""
+  - if [ -z "$BUILD_TYPE" ]; then export BUILD_TYPE=Release; fi
+  - if [ "$ASAN" == "On"]; then export CXX_FLAGS="${CXX_FLAGS} -fsanitize=address,undefined,integer -fno-omit-frame-pointer -fno-sanitize=unsigned-integer-overflow"; fi
+  - if [ -n "$CLANG_VERSION" ]; then CXX_FLAGS="${CXX_FLAGS} -D__extern_always_inline=inline"; fi
+  - if [ "$LIBCXX" == "On" ]; then CXX_FLAGS="${CXX_FLAGS} -stdlib=libc++ -I/usr/include/c++/v1/"; fi
+  - if [ "$LIBCXX" == "On" ]; then CXX_LINKER_FLAGS="${CXX_FLAGS} -L/usr/lib/ -lc++"; fi
+  - CXX_FLAGS="${CXX_FLAGS} -std=c++${CPP}"
+
+  # Build examples
+  - cd example
+  - if [ "$BUILD_TYPE" == "Release" ]; then make rebuild CXXFLAGS="${CXX_FLAGS} ${CXX_LINKER_FLAGS}" VERBOSE=1; export BIN=example; fi
+  - if [ "$BUILD_TYPE" == "Debug" ]; then make rebuild debug CXXFLAGS="${CXX_FLAGS} ${CXX_LINKER_FLAGS}" VERBOSE=1; export BIN=example-debug; fi
+  
+
+script:
+  - ./"${BIN}"
+  - valgrind --trace-children=yes --leak-check=full ./"${BIN}"
+  - cd $CHECKOUT_PATH/tests; make rebuild; ./tests
+  - cd $CHECKOUT_PATH/tests; STYLE=printf make rebuild; ./tests
+
+notifications:
+  email: false

CMakeLists.txt

@@ -1,374 +1,115 @@
-# Copyright(c) 2019 spdlog authors Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-cmake_minimum_required(VERSION 3.14)
-
-# ---------------------------------------------------------------------------------------
-# Start spdlog project
-# ---------------------------------------------------------------------------------------
-include(cmake/utils.cmake)
-include(cmake/ide.cmake)
-
-spdlog_extract_version()
-
-project(spdlog VERSION ${SPDLOG_VERSION} LANGUAGES CXX)
+#
+# Copyright(c) 2015 Ruslan Baratov.
+# Distributed under the MIT License (http://opensource.org/licenses/MIT)
+#
 
+cmake_minimum_required(VERSION 3.1)
+project(spdlog VERSION 0.17.0 LANGUAGES CXX)
+include(CTest)
+include(CMakeDependentOption)
 include(GNUInstallDirs)
 
-set_property(GLOBAL PROPERTY USE_FOLDERS ON)
-
-# ---------------------------------------------------------------------------------------
-# Set default build to release
-# ---------------------------------------------------------------------------------------
-if (NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
-    set(CMAKE_BUILD_TYPE "Release" CACHE STRING "Choose Release or Debug" FORCE)
-endif ()
-
-# ---------------------------------------------------------------------------------------
-# Compiler config
-# ---------------------------------------------------------------------------------------
-# c++ standard >=17 is required
-if (NOT DEFINED CMAKE_CXX_STANDARD)
-    set(CMAKE_CXX_STANDARD 17)
-elseif (CMAKE_CXX_STANDARD LESS 17)
-    message(FATAL_ERROR "Minimum supported CMAKE_CXX_STANDARD is 17, but it is set to ${CMAKE_CXX_STANDARD}")
-endif ()
+#---------------------------------------------------------------------------------------
+# compiler config
+#---------------------------------------------------------------------------------------
+set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
-set(CMAKE_CXX_EXTENSIONS OFF)
+if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
+    set(CMAKE_CXX_FLAGS "-Wall -O3 ${CMAKE_CXX_FLAGS}")
+endif()
 
-if (CMAKE_SYSTEM_NAME MATCHES "CYGWIN" OR CMAKE_SYSTEM_NAME MATCHES "MSYS" OR CMAKE_SYSTEM_NAME MATCHES "MINGW")
-    set(CMAKE_CXX_EXTENSIONS ON)
-endif ()
+#---------------------------------------------------------------------------------------
+# spdlog target
+#---------------------------------------------------------------------------------------
+add_library(spdlog INTERFACE)
 
-# ---------------------------------------------------------------------------------------
-# Set SPDLOG_MASTER_PROJECT to ON if we are building spdlog
-# ---------------------------------------------------------------------------------------
-# Check if spdlog is being used directly or via add_subdirectory, but allow overriding
-if (NOT DEFINED SPDLOG_MASTER_PROJECT)
-    if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
-        set(SPDLOG_MASTER_PROJECT ON)
-    else ()
-        set(SPDLOG_MASTER_PROJECT OFF)
-    endif ()
-endif ()
+option(SPDLOG_BUILD_EXAMPLES "Build examples" OFF)
+cmake_dependent_option(SPDLOG_BUILD_TESTING
+    "Build spdlog tests" ON
+    "BUILD_TESTING" OFF
+)
 
-option(SPDLOG_BUILD_ALL "Build all artifacts" OFF)
-
-# build shared option
-option(SPDLOG_BUILD_SHARED "Build shared library" OFF)
-
-# example options
-option(SPDLOG_BUILD_EXAMPLE "Build example" ${SPDLOG_MASTER_PROJECT})
-
-# testing options
-option(SPDLOG_BUILD_TESTS "Build tests" OFF)
-
-# bench options
-option(SPDLOG_BUILD_BENCH "Build benchmarks (Requires https://github.com/google/benchmark.git to be installed)" OFF)
-
-# sanitizer options
-option(SPDLOG_SANITIZE_ADDRESS "Enable address sanitizer in tests" OFF)
-
-# warning options
-option(SPDLOG_BUILD_WARNINGS "Enable compiler warnings" OFF)
-
-# install options
-option(SPDLOG_SYSTEM_INCLUDES "Include as system headers (skip for clang-tidy)." OFF)
-option(SPDLOG_INSTALL "Generate the install target" ${SPDLOG_MASTER_PROJECT})
-option(SPDLOG_FMT_EXTERNAL "Use external fmt library instead of of fetching from gitub." OFF)
-
-if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
-    option(SPDLOG_CLOCK_COARSE "Use CLOCK_REALTIME_COARSE instead of the regular clock," OFF)
-else ()
-    set(SPDLOG_CLOCK_COARSE OFF CACHE BOOL "non supported option" FORCE)
-endif ()
-
-option(SPDLOG_PREVENT_CHILD_FD "Prevent from child processes to inherit log file descriptors" OFF)
-option(SPDLOG_NO_THREAD_ID "prevent spdlog from querying the thread id on each log call if thread id is not needed" OFF)
-option(SPDLOG_DISABLE_GLOBAL_LOGGER "Disable global logger creation" OFF)
-option(SPDLOG_NO_TLS "Disable thread local storage" OFF)
-
-# clang-tidy
-option(SPDLOG_TIDY "run clang-tidy" OFF)
-
-if (SPDLOG_TIDY)
-    set(CMAKE_CXX_CLANG_TIDY "clang-tidy")
-    set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
-    message(STATUS "Enabled clang-tidy")
-endif ()
-
-if (SPDLOG_BUILD_SHARED)
-    set(BUILD_SHARED_LIBS ON)
-    set(CMAKE_POSITION_INDEPENDENT_CODE ON)
-endif ()
-
-if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
-    # place dlls and libs and executables in the same directory
-    set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin/$<CONFIG>)
-    set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin/$<CONFIG>)
-    set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin/$<CONFIG>)
-    set(CMAKE_PDB_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin/$<CONFIG>)
-
-    # make sure __cplusplus is defined
-    add_compile_options(/Zc:__cplusplus)
-    # enable parallel build for the solution
-    add_compile_options(/MP)
-endif ()
-
-message(STATUS "spdlog version: ${SPDLOG_VERSION}")
-message(STATUS "spdlog build type: " ${CMAKE_BUILD_TYPE})
-message(STATUS "spdlog build shared: " ${BUILD_SHARED_LIBS})
-message(STATUS "spdlog fmt external: " ${SPDLOG_FMT_EXTERNAL})
-
-# ---------------------------------------------------------------------------------------
-# Find {fmt} library
-# ---------------------------------------------------------------------------------------
-if (SPDLOG_FMT_EXTERNAL)
-    find_package(fmt REQUIRED)
-    message(STATUS "Using external fmt lib version: ${fmt_VERSION}")
-else ()
-    include(cmake/fmtlib.cmake)
-endif ()
-
-# ---------------------------------------------------------------------------------------
-# Threads library is required
-# ---------------------------------------------------------------------------------------
-find_package(Threads REQUIRED)
-
-# ---------------------------------------------------------------------------------------
-# Library sources
-# ---------------------------------------------------------------------------------------
-set(SPDLOG_HEADERS
-        "include/spdlog/common.h"
-        "include/spdlog/formatter.h"
-        "include/spdlog/fwd.h"
-        "include/spdlog/logger.h"
-        "include/spdlog/pattern_formatter.h"
-        "include/spdlog/source_loc.h"
-        "include/spdlog/spdlog.h"
-        "include/spdlog/stopwatch.h"
-        "include/spdlog/version.h"
-        "include/spdlog/details/circular_q.h"
-        "include/spdlog/details/file_helper.h"
-        "include/spdlog/details/fmt_helper.h"
-        "include/spdlog/details/log_msg.h"
-        "include/spdlog/details/async_log_msg.h"
-        "include/spdlog/details/mpmc_blocking_q.h"
-        "include/spdlog/details/null_mutex.h"
-        "include/spdlog/details/os.h"
-        "include/spdlog/details/err_helper.h"
-        "include/spdlog/bin_to_hex.h"
-        "include/spdlog/sinks/android_sink.h"
-        "include/spdlog/sinks/base_sink.h"
-        "include/spdlog/sinks/basic_file_sink.h"
-        "include/spdlog/sinks/callback_sink.h"
-        "include/spdlog/sinks/daily_file_sink.h"
-        "include/spdlog/sinks/dist_sink.h"
-        "include/spdlog/sinks/dup_filter_sink.h"
-        "include/spdlog/sinks/hourly_file_sink.h"
-        "include/spdlog/sinks/kafka_sink.h"
-        "include/spdlog/sinks/mongo_sink.h"
-        "include/spdlog/sinks/msvc_sink.h"
-        "include/spdlog/sinks/null_sink.h"
-        "include/spdlog/sinks/ostream_sink.h"
-        "include/spdlog/sinks/qt_sinks.h"
-        "include/spdlog/sinks/ringbuffer_sink.h"
-        "include/spdlog/sinks/rotating_file_sink.h"
-        "include/spdlog/sinks/sink.h"
-        "include/spdlog/sinks/stdout_color_sinks.h"
-        "include/spdlog/sinks/stdout_sinks.h"
-        "include/spdlog/sinks/syslog_sink.h"
-        "include/spdlog/sinks/systemd_sink.h"
-        "include/spdlog/sinks/tcp_sink.h"
-        "include/spdlog/sinks/udp_sink.h"
-        "include/spdlog/sinks/async_sink.h")
-
-set(SPDLOG_SRCS
-        "src/common.cpp"
-        "src/logger.cpp"
-        "src/pattern_formatter.cpp"
-        "src/spdlog.cpp"
-        "src/details/file_helper.cpp"
-        "src/details/os_filesystem.cpp"
-        "src/details/log_msg.cpp"
-        "src/details/async_log_msg.cpp"
-        "src/details/err_helper.cpp"
-        "src/sinks/base_sink.cpp"
-        "src/sinks/basic_file_sink.cpp"
-        "src/sinks/rotating_file_sink.cpp"
-        "src/sinks/stdout_sinks.cpp"
-        "src/sinks/async_sink.cpp")
-
-if (WIN32)
-    list(APPEND SPDLOG_SRCS
-            "src/details/os_windows.cpp"
-            "src/sinks/wincolor_sink.cpp")
-    list(APPEND SPDLOG_HEADERS
-            "include/spdlog/sinks/wincolor_sink.h"
-            "include/spdlog/details/tcp_client_windows.h"
-            "include/spdlog/details/udp_client_windows.h"
-            "include/spdlog/details/windows_include.h"
-            "include/spdlog/sinks/win_eventlog_sink.h")
-else ()
-    list(APPEND SPDLOG_SRCS
-            "src/details/os_unix.cpp"
-            "src/sinks/ansicolor_sink.cpp")
-    list(APPEND SPDLOG_HEADERS
-            "include/spdlog/details/tcp_client_unix.h"
-            "include/spdlog/details/udp_client_unix.h"
-            "include/spdlog/sinks/ansicolor_sink.h")
-endif ()
-
-# ---------------------------------------------------------------------------------------
-# Check if fwrite_unlocked/_fwrite_nolock is available
-# ---------------------------------------------------------------------------------------
-include(CheckSymbolExists)
-if (WIN32)
-    check_symbol_exists(_fwrite_nolock "stdio.h" HAVE_FWRITE_UNLOCKED)
-else ()
-    check_symbol_exists(fwrite_unlocked "stdio.h" HAVE_FWRITE_UNLOCKED)
-endif ()
-if (HAVE_FWRITE_UNLOCKED)
-    set(SPDLOG_FWRITE_UNLOCKED 1)
-endif ()
-
-# ---------------------------------------------------------------------------------------
-# spdlog library
-# ---------------------------------------------------------------------------------------
-if (BUILD_SHARED_LIBS)
-    if (WIN32)
-        set(VERSION_RC ${CMAKE_CURRENT_BINARY_DIR}/version.rc)
-        configure_file(${CMAKE_CURRENT_SOURCE_DIR}/cmake/version.rc.in ${CMAKE_CURRENT_BINARY_DIR}/version.rc @ONLY)
-    endif ()
-    add_library(spdlog SHARED ${VERSION_RC})
-    target_compile_definitions(spdlog PUBLIC SPDLOG_SHARED_LIB)
-    set_target_properties(spdlog PROPERTIES
-            CXX_VISIBILITY_PRESET hidden
-            VISIBILITY_INLINES_HIDDEN ON)
-
-    if (MSVC)
-        # disable dlls related warnings on msvc
-        target_compile_options(spdlog PUBLIC $<$<AND:$<CXX_COMPILER_ID:MSVC>,$<NOT:$<COMPILE_LANGUAGE:CUDA>>>:/wd4251
-                /wd4275>)
-    endif ()
-else ()
-    add_library(spdlog STATIC)
-endif ()
-add_library(spdlog::spdlog ALIAS spdlog)
-target_sources(spdlog PRIVATE ${SPDLOG_SRCS})
-target_sources(
+target_include_directories(
     spdlog
-        PUBLIC FILE_SET pub_headers
-        TYPE HEADERS
-        BASE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/include
-        FILES ${SPDLOG_HEADERS})
+    INTERFACE
+    "$<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}/include>"
+    "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>"
+)
 
-set(SPDLOG_INCLUDES_LEVEL "")
-if (SPDLOG_SYSTEM_INCLUDES)
-    set(SPDLOG_INCLUDES_LEVEL "SYSTEM")
-endif ()
+set(HEADER_BASE "${CMAKE_CURRENT_SOURCE_DIR}/include")
 
-target_include_directories(spdlog ${SPDLOG_INCLUDES_LEVEL} PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}/include>"
-        "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>")
-
-target_link_libraries(spdlog PUBLIC Threads::Threads)
-target_link_libraries(spdlog PUBLIC fmt::fmt)
-spdlog_enable_warnings(spdlog)
-set_target_properties(spdlog PROPERTIES VERSION ${SPDLOG_VERSION} SOVERSION
-        ${SPDLOG_VERSION_MAJOR}.${SPDLOG_VERSION_MINOR})
-
-set(SPDLOG_NAME spdlog-${SPDLOG_VERSION_MAJOR})
-set_target_properties(spdlog PROPERTIES DEBUG_POSTFIX "-${SPDLOG_VERSION_MAJOR}.${SPDLOG_VERSION_MINOR}d")
-
-# ---------------------------------------------------------------------------------------
-# set source groups for visual studio
-# ---------------------------------------------------------------------------------------
-if (CMAKE_GENERATOR MATCHES "Visual Studio")
-    source_group(TREE ${CMAKE_CURRENT_SOURCE_DIR}/include PREFIX include FILES ${SPDLOG_HEADERS})
-    source_group(TREE ${CMAKE_CURRENT_SOURCE_DIR}/src PREFIX sources FILES ${SPDLOG_SRCS})
-    source_group(sources FILES ${VERSION_RC})
-endif ()
-
-# ---------------------------------------------------------------------------------------
-# Add required libraries for Android CMake build
-# ---------------------------------------------------------------------------------------
-if (ANDROID)
-    target_link_libraries(spdlog PUBLIC log)
-endif ()
-
-# ---------------------------------------------------------------------------------------
-# spdlog private defines according to the options
-# ---------------------------------------------------------------------------------------
-foreach (SPDLOG_OPTION
-        SPDLOG_CLOCK_COARSE
-        SPDLOG_PREVENT_CHILD_FD
-        SPDLOG_NO_THREAD_ID
-        SPDLOG_DISABLE_GLOBAL_LOGGER
-        SPDLOG_NO_TLS
-        SPDLOG_FWRITE_UNLOCKED)
-    if (${SPDLOG_OPTION})
-        target_compile_definitions(spdlog PRIVATE ${SPDLOG_OPTION})
-    endif ()
-endforeach ()
-
-# ---------------------------------------------------------------------------------------
-# Build binaries
-# ---------------------------------------------------------------------------------------
-if (SPDLOG_BUILD_EXAMPLE OR SPDLOG_BUILD_ALL)
-    message(STATUS "Generating example(s)")
+if(SPDLOG_BUILD_EXAMPLES)
     add_subdirectory(example)
-    spdlog_enable_warnings(example)
-endif ()
+endif()
 
-if (SPDLOG_BUILD_TESTS OR SPDLOG_BUILD_ALL)
-    message(STATUS "Generating tests")
-    enable_testing()
+if(SPDLOG_BUILD_TESTING)
     add_subdirectory(tests)
-endif ()
+endif()
 
-if (SPDLOG_BUILD_BENCH OR SPDLOG_BUILD_ALL)
-    message(STATUS "Generating benchmarks")
-    add_subdirectory(bench)
-endif ()
+#---------------------------------------------------------------------------------------
+# Install/export targets and files
+#---------------------------------------------------------------------------------------
+# set files and directories
+set(config_install_dir "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}")
+set(include_install_dir "${CMAKE_INSTALL_INCLUDEDIR}")
+set(pkgconfig_install_dir "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
+set(version_config "${CMAKE_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake")
+set(project_config "${PROJECT_NAME}Config.cmake")
+set(pkg_config "${CMAKE_BINARY_DIR}/${PROJECT_NAME}.pc")
+set(targets_export_name "${PROJECT_NAME}Targets")
+set(namespace "${PROJECT_NAME}::")
 
-# ---------------------------------------------------------------------------------------
-# Install
-# ---------------------------------------------------------------------------------------
-if (SPDLOG_INSTALL)
-    message(STATUS "Generating install")
-    set(project_config_in "${CMAKE_CURRENT_LIST_DIR}/cmake/spdlogConfig.cmake.in")
-    set(project_config_out "${CMAKE_CURRENT_BINARY_DIR}/spdlogConfig.cmake")
-    set(config_targets_file "spdlogConfigTargets.cmake")
-    set(version_config_file "${CMAKE_CURRENT_BINARY_DIR}/spdlogConfigVersion.cmake")
-    set(export_dest_dir "${CMAKE_INSTALL_LIBDIR}/cmake/${SPDLOG_NAME}")
+# generate package version file
+include(CMakePackageConfigHelpers)
+write_basic_package_version_file(
+    "${version_config}" COMPATIBILITY SameMajorVersion
+)
 
-    # ---------------------------------------------------------------------------------------
-    # Include files
-    # ---------------------------------------------------------------------------------------
-    set(installed_include_dir "${CMAKE_INSTALL_INCLUDEDIR}/${SPDLOG_NAME}")
-    install(
+# configure pkg config file
+configure_file("cmake/spdlog.pc.in" "${pkg_config}" @ONLY)
+
+# install targets
+install(
     TARGETS spdlog
-            EXPORT spdlogTargets
-            LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}/${SPDLOG_NAME}"
-            ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}/${SPDLOG_NAME}"
-            RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}/${SPDLOG_NAME}"
-            FILE_SET pub_headers
-            DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${SPDLOG_NAME}")
-    message(STATUS "Installing spdlog in ${CMAKE_INSTALL_LIBDIR}/${SPDLOG_NAME}")
+    EXPORT "${targets_export_name}"
+)
 
-    # ---------------------------------------------------------------------------------------
-    # Install CMake config files
-    # ---------------------------------------------------------------------------------------
-    install(EXPORT spdlogTargets DESTINATION ${export_dest_dir} NAMESPACE spdlog:: FILE ${config_targets_file})
+# install headers
+install(
+    DIRECTORY "${HEADER_BASE}/${PROJECT_NAME}"
+    DESTINATION "${include_install_dir}"
+)
 
-    include(CMakePackageConfigHelpers)
-    configure_package_config_file("${project_config_in}" "${project_config_out}" INSTALL_DESTINATION ${export_dest_dir})
+# install project version file
+install(
+    FILES "${version_config}"
+    DESTINATION "${config_install_dir}"
+)
 
-    write_basic_package_version_file("${version_config_file}" COMPATIBILITY SameMajorVersion)
-    install(FILES "${project_config_out}" "${version_config_file}" DESTINATION "${export_dest_dir}")
+# install pkg config file
+install(
+    FILES "${pkg_config}"
+    DESTINATION "${pkgconfig_install_dir}"
+)
 
-    # ---------------------------------------------------------------------------------------
-    # Support creation of installable packages
-    # ---------------------------------------------------------------------------------------
-    include(cmake/spdlogCPack.cmake)
-endif ()
+# install project config file
+install(
+    EXPORT "${targets_export_name}"
+    NAMESPACE "${namespace}"
+    DESTINATION "${config_install_dir}"
+    FILE ${project_config}
+)
+
+# export build directory config file
+export(
+    EXPORT ${targets_export_name}
+    NAMESPACE "${namespace}"
+    FILE ${project_config}
+)
+
+# register project in CMake user registry
+export(PACKAGE ${PROJECT_NAME})
+
+file(GLOB_RECURSE spdlog_include_SRCS "${HEADER_BASE}/*.h")
+add_custom_target(spdlog_headers_for_ide SOURCES ${spdlog_include_SRCS})

INSTALL

@@ -1,12 +1,13 @@
-CMake:
-  add_executable(example example.cpp)
-  target_link_libraries(example spdlog::spdlog)
+spdlog is header only library.
+Just copy the files to your build tree and use a C++11 compiler
 
 Tested on:
 gcc 4.8.1 and above
 clang 3.5
 Visual Studio 2013
 
+gcc 4.8 flags: --std==c++11 -pthread -O3 -flto -Wl,--no-as-needed
+gcc 4.9 flags: --std=c++11 -pthread -O3 -flto
 
 
-
+see the makefile in the example folder

LICENSE

@@ -20,7 +20,3 @@ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 
--- NOTE: Third party dependency used by this software --
-This software depends on the fmt lib (MIT License),
-and users must comply to its license: https://raw.githubusercontent.com/fmtlib/fmt/master/LICENSE
-

README.md

@@ -1,462 +1,221 @@
 # spdlog
 
+Very fast, header only, C++ logging library. [![Build Status](https://travis-ci.org/gabime/spdlog.svg?branch=master)](https://travis-ci.org/gabime/spdlog)  [![Build status](https://ci.appveyor.com/api/projects/status/d2jnxclg20vd0o50?svg=true)](https://ci.appveyor.com/project/gabime/spdlog)
 
-[![ci](https://github.com/gabime/spdlog/actions/workflows/linux.yml/badge.svg)](https://github.com/gabime/spdlog/actions/workflows/linux.yml) 
-[![ci](https://github.com/gabime/spdlog/actions/workflows/windows.yml/badge.svg)](https://github.com/gabime/spdlog/actions/workflows/windows.yml) 
-[![ci](https://github.com/gabime/spdlog/actions/workflows/macos.yml/badge.svg)](https://github.com/gabime/spdlog/actions/workflows/macos.yml) 
-[![Release](https://img.shields.io/github/release/gabime/spdlog.svg)](https://github.com/gabime/spdlog/releases/latest)
-
-Fast C++ logging library
 
 ## Install
-```console
-$ git clone https://github.com/gabime/spdlog.git
-$ cd spdlog && mkdir build && cd build
-$ cmake .. && cmake --build .
-```
+#### Just copy the headers:
+
+* Copy the source [folder](https://github.com/gabime/spdlog/tree/master/include/spdlog) to your build tree and use a C++11 compiler.
+
+#### Or use your favorite package manager:
+
+* Ubuntu: `apt-get install libspdlog-dev`
+* Homebrew: `brew install spdlog`
+* FreeBSD:  `cd /usr/ports/devel/spdlog/ && make install clean`
+* Fedora: `yum install spdlog`
+* Gentoo: `emerge dev-libs/spdlog`
+* Arch Linux: `yaourt -S spdlog-git`
+* vcpkg: `vcpkg install spdlog`
  
-see example [CMakeLists.txt](https://github.com/gabime/spdlog/blob/v2.x/example/CMakeLists.txt) on how to use.
 
 ## Platforms
-* Linux, FreeBSD, OpenBSD, Solaris, AIX
-* Windows (msvc, cygwin)
-* macOS 
-* Android
-
-## Package managers:
-* Debian: `sudo apt install libspdlog-dev`
-* Homebrew: `brew install spdlog`
-* MacPorts: `sudo port install spdlog`
-* FreeBSD:  `pkg install spdlog`
-* Fedora: `dnf install spdlog`
-* Gentoo: `emerge dev-libs/spdlog`
-* Arch Linux: `pacman -S spdlog`
-* openSUSE: `sudo zypper in spdlog-devel`
-* vcpkg: `vcpkg install spdlog`
-* conan: `conan install --requires=spdlog/[*]`
-* conda: `conda install -c conda-forge spdlog`
-* build2: ```depends: spdlog ^1.8.2```
-
+ * Linux, FreeBSD, Solaris
+ * Windows (vc 2013+, cygwin)
+ * Mac OSX (clang 3.5+)
+ * Android
 
 ## Features
-* Very fast (see [benchmarks](#benchmarks) below).
-* Headers only or compiled
-* Feature-rich formatting, using the excellent [fmt](https://github.com/fmtlib/fmt) library.
+* Very fast - performance is the primary goal (see [benchmarks](#benchmarks) below).
+* Headers only, just copy and use.
+* Feature rich [call style](#usage-example) using the excellent [fmt](https://github.com/fmtlib/fmt) library.
+* Optional printf syntax support.
 * Asynchronous mode (optional)
 * [Custom](https://github.com/gabime/spdlog/wiki/3.-Custom-formatting) formatting.
+* Conditional Logging
 * Multi/Single threaded loggers.
 * Various log targets:
     * Rotating log files.
     * Daily log files.
     * Console logging (colors supported).
     * syslog.
-  * Windows event log.
-  * Windows debugger (```OutputDebugString(..)```).
-  * Log to Qt widgets ([example](#log-to-qt-with-nice-colors)).
-  * Easily [extendable](https://github.com/gabime/spdlog/wiki/4.-Sinks#implementing-your-own-sink) with custom log targets.
-* Log filtering - log levels can be modified at runtime as well as compile time.
-* Support for loading log levels from argv or environment var.
+    * Windows debugger (```OutputDebugString(..)```)
+    * Easily extendable with custom log targets  (just implement a single function in the [sink](include/spdlog/sinks/sink.h) interface).
+* Severity based filtering - threshold levels can be modified in runtime as well as in compile time.
 
-## Usage samples
 
-#### Basic usage
+
+## Benchmarks
+
+Below are some [benchmarks](bench) comparing popular log libraries under Ubuntu 64 bit, Intel i7-4770 CPU @ 3.40GHz
+
+#### Synchronous mode
+Time needed to log 1,000,000 lines in synchronous mode (in seconds, the best of 3 runs):
+
+|threads|boost log 1.54|glog   |easylogging |spdlog|
+|-------|:-------:|:-----:|----------:|------:|
+|1|       4.169s  |1.066s |0.975s     |0.392s|
+|10|     6.180s   |3.032s |2.857s     |0.773s|
+|100|     5.981s  |1.139s |4.512s     |0.587s|
+
+
+#### Asynchronous mode
+Time needed to log 1,000,000 lines in asynchronous mode, i.e. the time it takes to put them in the async queue (in seconds, the best of 3 runs):
+
+|threads|g2log <sup>async logger</sup>   |spdlog <sup>async mode</sup>|
+|:-------|:-----:|-------------------------:|
+|1|       1.850s |0.39s |
+|10|      0.943s  |0.416s|
+|100|      0.959s |0.413s|
+
+
+
+
+## Usage Example
 ```c++
+
 #include "spdlog/spdlog.h"
 
-int main() 
-{
-    spdlog::info("Welcome to spdlog!");
-    spdlog::error("Some error message with arg: {}", 1);
+#include <iostream>
+#include <memory>
 
-    spdlog::warn("Easy padding in numbers like {:08d}", 12);
-    spdlog::critical("Support for int: {0:d};  hex: {0:x};  oct: {0:o}; bin: {0:b}", 42);
-    spdlog::info("Support for floats {:03.2f}", 1.23456);
-    spdlog::info("Positional args are {1} {0}..", "too", "supported");
-    spdlog::info("{:<30}", "left aligned");
+void async_example();
+void syslog_example();
+void user_defined_example();
+void err_handler_example();
 
-    spdlog::set_level(spdlog::level::debug); // Set global log level to debug
-    spdlog::debug("This message should be displayed..");    
-    
-    // change log pattern
-    spdlog::set_pattern("[%H:%M:%S %z] [%n] [%^---%L---%$] [thread %t] %v");
-    
-    // Compile time log levels
-    // define SPDLOG_ACTIVE_LEVEL to desired level
-    SPDLOG_TRACE("Some trace message with param {}", 42);
-    SPDLOG_DEBUG("Some debug message");
-}
-
-```
----
-#### Create stdout/stderr logger object
-```c++
-#include "spdlog/spdlog.h"
-#include "spdlog/sinks/stdout_color_sinks.h"
-void stdout_example()
-{
-    // create a color multi-threaded logger
-    auto console = spdlog::stdout_color_mt("console");    
-    auto err_logger = spdlog::stderr_color_mt("stderr");    
-    spdlog::get("console")->info("loggers can be retrieved from a global registry using the spdlog::get(logger_name)");
-}
-```
-
----
-#### Basic file logger
-```c++
-#include "spdlog/sinks/basic_file_sink.h"
-void basic_logfile_example()
+namespace spd = spdlog;
+int main(int, char*[])
 {
     try
     {
-        auto logger = spdlog::basic_logger_mt("basic_logger", "logs/basic-log.txt");
+        // Console logger with color
+        auto console = spd::stdout_color_mt("console");
+        console->info("Welcome to spdlog!");
+        console->error("Some error message with arg{}..", 1);
+	
+        // Formatting examples
+        console->warn("Easy padding in numbers like {:08d}", 12);
+        console->critical("Support for int: {0:d};  hex: {0:x};  oct: {0:o}; bin: {0:b}", 42);
+        console->info("Support for floats {:03.2f}", 1.23456);
+        console->info("Positional args are {1} {0}..", "too", "supported");
+        console->info("{:<30}", "left aligned");
+	
+	// Use global registry to retrieve loggers
+        spd::get("console")->info("loggers can be retrieved from a global registry using the spdlog::get(logger_name) function");
+        
+        // Create basic file logger (not rotated)
+        auto my_logger = spd::basic_logger_mt("basic_logger", "logs/basic.txt");
+        my_logger->info("Some log message");
+
+        // Create a file rotating logger with 5mb size max and 3 rotated files
+        auto rotating_logger = spd::rotating_logger_mt("some_logger_name", "logs/mylogfile.txt", 1048576 * 5, 3);
+        for (int i = 0; i < 10; ++i)
+            rotating_logger->info("{} * {} equals {:>10}", i, i, i*i);
+
+        // Create a daily logger - a new file is created every day on 2:30am
+        auto daily_logger = spd::daily_logger_mt("daily_logger", "logs/daily.txt", 2, 30);
+        // trigger flush if the log severity is error or higher
+        daily_logger->flush_on(spd::level::err);
+        daily_logger->info(123.44);
+
+        // Customize msg format for all messages
+        spd::set_pattern("[%^+++%$] [%H:%M:%S %z] [thread %t] %v");
+        console->info("This an info message with custom format (and custom color range between the '%^' and '%$')");
+	console->error("This an error message with custom format (and custom color range between the '%^' and '%$')");
+
+        // Runtime log levels
+	spd::set_level(spd::level::info); //Set global log level to info
+	console->debug("This message should not be displayed!");
+	console->set_level(spd::level::debug); // Set specific logger's log level
+	console->debug("This message should be displayed..");
+
+        // Compile time log levels
+        // define SPDLOG_DEBUG_ON or SPDLOG_TRACE_ON
+        SPDLOG_TRACE(console, "Enabled only #ifdef SPDLOG_TRACE_ON..{} ,{}", 1, 3.23);
+        SPDLOG_DEBUG(console, "Enabled only #ifdef SPDLOG_DEBUG_ON.. {} ,{}", 1, 3.23);
+
+        // Asynchronous logging is very fast..
+        // Just call spdlog::set_async_mode(q_size) and all created loggers from now on will be asynchronous..
+        async_example();
+
+        // syslog example. linux/osx only
+        syslog_example();
+
+        // android example. compile with NDK
+        android_example();
+
+        // Log user-defined types example
+        user_defined_example();
+
+        // Change default log error handler
+        err_handler_example();
+
+        // Apply a function on all registered loggers
+        spd::apply_all([&](std::shared_ptr<spd::logger> l)
+        {
+            l->info("End of example.");
+        });
+
+        // Release and close all loggers
+        spd::drop_all();
     }
-    catch (const spdlog::spdlog_ex &ex)
+    // Exceptions will only be thrown upon failed logger or sink construction (not during logging)
+    catch (const spd::spdlog_ex& ex)
     {
         std::cout << "Log init failed: " << ex.what() << std::endl;
+        return 1;
     }
 }
-```
----
-#### Rotating files
-```c++
-#include "spdlog/sinks/rotating_file_sink.h"
-void rotating_example()
-{
-    // Create a file rotating logger with 5 MB size max and 3 rotated files
-    auto max_size = 1048576 * 5;
-    auto max_files = 3;
-    auto logger = spdlog::rotating_logger_mt("some_logger_name", "logs/rotating.txt", max_size, max_files);
-}
-```
 
----
-#### Daily files
-```c++
-
-#include "spdlog/sinks/daily_file_sink.h"
-void daily_example()
-{
-    // Create a daily logger - a new file is created every day at 2:30 am
-    auto logger = spdlog::daily_logger_mt("daily_logger", "logs/daily.txt", 2, 30);
-}
-
-```
-
-
----
-#### Periodic flush
-```c++
-// periodically flush all *registered* loggers every 3 seconds:
-// warning: only use if all your loggers are thread-safe ("_mt" loggers)
-spdlog::flush_every(std::chrono::seconds(3));
-
-```
-
----
-#### Stopwatch
-```c++
-// Stopwatch support for spdlog
-#include "spdlog/stopwatch.h"
-void stopwatch_example()
-{
-    spdlog::stopwatch sw;    
-    spdlog::debug("Elapsed {}", sw);
-    spdlog::debug("Elapsed {:.3}", sw);       
-}
-
-```
-
----
-#### Log binary data in hex
-```c++
-// many types of std::container<char> types can be used.
-// ranges are supported too.
-// format flags:
-// {:X} - print in uppercase.
-// {:s} - don't separate each byte with space.
-// {:p} - don't print the position on each line start.
-// {:n} - don't split the output into lines.
-// {:a} - show ASCII if :n is not set.
-
-#include "spdlog/fmt/bin_to_hex.h"
-
-void binary_example()
-{
-    auto console = spdlog::get("console");
-    std::array<char, 80> buf;
-    console->info("Binary example: {}", spdlog::to_hex(buf));
-    console->info("Another binary example:{:n}", spdlog::to_hex(std::begin(buf), std::begin(buf) + 10));
-    // more examples:
-    // logger->info("uppercase: {:X}", spdlog::to_hex(buf));
-    // logger->info("uppercase, no delimiters: {:Xs}", spdlog::to_hex(buf));
-    // logger->info("uppercase, no delimiters, no position info: {:Xsp}", spdlog::to_hex(buf));
-}
-
-```
-
----
-#### Logger with multi sinks - each with a different format and log level
-```c++
-
-// create a logger with 2 targets, with different log levels and formats.
-// The console will show only warnings or errors, while the file will log all.
-void multi_sink_example()
-{
-    auto console_sink = std::make_shared<spdlog::sinks::stdout_color_sink_mt>();
-    console_sink->set_level(spdlog::level::warn);
-    console_sink->set_pattern("[multi_sink_example] [%^%l%$] %v");
-
-    auto file_sink = std::make_shared<spdlog::sinks::basic_file_sink_mt>("logs/multisink.txt", true);
-    file_sink->set_level(spdlog::level::trace);
-
-    spdlog::logger logger("multi_sink", {console_sink, file_sink});
-    logger.set_level(spdlog::level::debug);
-    logger.warn("this should appear in both console and file");
-    logger.info("this message should not appear in the console, only in the file");
-}
-```
-
----
-#### User-defined callbacks about log events
-```c++
-
-// create a logger with a lambda function callback, the callback will be called
-// each time something is logged to the logger
-void callback_example()
-{
-    auto callback_sink = std::make_shared<spdlog::sinks::callback_sink_mt>([](const spdlog::details::log_msg &msg) {
-         // for example you can be notified by sending an email to yourself
-    });
-    callback_sink->set_level(spdlog::level::err);
-
-    auto console_sink = std::make_shared<spdlog::sinks::stdout_color_sink_mt>();
-    spdlog::logger logger("custom_callback_logger", {console_sink, callback_sink});
-
-    logger.info("some info log");
-    logger.error("critical issue"); // will notify you
-}
-```
-
----
-#### Asynchronous logging
-```c++
-#include "spdlog/async.h"
-#include "spdlog/sinks/basic_file_sink.h"
 void async_example()
 {
-    // TODO       
+    size_t q_size = 4096; 
+    spd::set_async_mode(q_size);
+    auto async_file = spd::daily_logger_st("async_file_logger", "logs/async_log.txt");
+    for (int i = 0; i < 100; ++i)
+        async_file->info("Async message #{}", i);
 }
 
-```
-
----
-#### User-defined types
-```c++
-template<>
-struct fmt::formatter<my_type> : fmt::formatter<std::string>
-{
-    auto format(my_type my, format_context &ctx) const -> decltype(ctx.out())
-    {
-        return format_to(ctx.out(), "[my_type i={}]", my.i);
-    }
-};
-
-void user_defined_example()
-{
-    spdlog::info("user defined type: {}", my_type(14));
-}
-
-```
-
----
-#### User-defined flags in the log pattern
-```c++ 
-// Log patterns can contain custom flags.
-// the following example will add new flag '%*' - which will be bound to a <my_formatter_flag> instance.
-#include "spdlog/pattern_formatter.h"
-class my_formatter_flag : public spdlog::custom_flag_formatter
-{
-public:
-    void format(const spdlog::details::log_msg &, const std::tm &, spdlog::memory_buf_t &dest) override
-    {
-        std::string some_txt = "custom-flag";
-        dest.append(some_txt.data(), some_txt.data() + some_txt.size());
-    }
-
-    std::unique_ptr<custom_flag_formatter> clone() const override
-    {
-        return std::make_unique<my_formatter_flag>();
-    }
-};
-
-void custom_flags_example()
-{    
-    auto formatter = std::make_unique<spdlog::pattern_formatter>();
-    formatter->add_flag<my_formatter_flag>('*').set_pattern("[%n] [%*] [%^%l%$] %v");
-    spdlog::set_formatter(std::move(formatter));
-}
-
-```
-
----
-#### Custom error handler
-```c++
-void err_handler_example()
-{
-    // can be set globally or per logger(logger->set_error_handler(..))
-    spdlog::set_error_handler([](const std::string &msg) { spdlog::get("console")->error("*** LOGGER ERROR ***: {}", msg); });
-    spdlog::get("console")->info("some invalid message to trigger an error {}{}{}{}", 3);
-}
-
-```
-
----
-#### syslog
-```c++
-#include "spdlog/sinks/syslog_sink.h"
+//syslog example
 void syslog_example()
 {
+#ifdef SPDLOG_ENABLE_SYSLOG 
     std::string ident = "spdlog-example";
-    auto syslog_logger = spdlog::syslog_logger_mt("syslog", ident, LOG_PID);
-    syslog_logger->warn("This is warning that will end up in syslog.");
+    auto syslog_logger = spd::syslog_logger("syslog", ident, LOG_PID);
+    syslog_logger->warn("This is warning that will end up in syslog..");
+#endif
 }
-```
----
-#### Android example
-```c++
-#include "spdlog/sinks/android_sink.h"
-void android_example()
+
+// user defined types logging by implementing operator<<
+struct my_type
 {
-    std::string tag = "spdlog-android";
-    auto android_logger = spdlog::android_logger_mt("android", tag);
-    android_logger->critical("Use \"adb shell logcat\" to view this message.");
-}
-```
+    int i;
+    template<typename OStream>
+    friend OStream& operator<<(OStream& os, const my_type &c)
+    {
+        return os << "[my_type i="<<c.i << "]";
+    }
+};
 
----
-#### Load log levels from the env variable or argv
-
-```c++
-#include "spdlog/cfg/env.h"
-int main (int argc, char *argv[])
+#include <spdlog/fmt/ostr.h> // must be included
+void user_defined_example()
 {
-    spdlog::cfg::load_env_levels();
-    // or from the command line:
-    // ./example SPDLOG_LEVEL=info,mylogger=trace
-    // #include "spdlog/cfg/argv.h" // for loading levels from argv
-    // spdlog::cfg::load_argv_levels(argc, argv);
+    spd::get("console")->info("user defined type: {}", my_type { 14 });
 }
-```
-So then you can:
 
-```console
-$ export SPDLOG_LEVEL=info,mylogger=trace
-$ ./example
-```
-
-
----
-#### Log file open/close event handlers
-```c++
-// You can get callbacks from spdlog before/after a log file has been opened or closed. 
-// This is useful for cleanup procedures or for adding something to the start/end of the log file.
-void file_events_example()
+//
+//custom error handler
+//
+void err_handler_example()
 {	
-    // pass the spdlog::file_event_handlers to file sinks for open/close log file notifications
-    spdlog::file_event_handlers handlers;
-    handlers.before_open = [](spdlog::filename_t filename) { spdlog::info("Before opening {}", filename); };
-    handlers.after_open = [](spdlog::filename_t filename, std::FILE *fstream) { fputs("After opening\n", fstream); };
-    handlers.before_close = [](spdlog::filename_t filename, std::FILE *fstream) { fputs("Before closing\n", fstream); };
-    handlers.after_close = [](spdlog::filename_t filename) { spdlog::info("After closing {}", filename); };
-    auto my_logger = spdlog::basic_logger_st("some_logger", "logs/events-sample.txt", true, handlers);        
+	spd::set_error_handler([](const std::string& msg) {
+		std::cerr << "my err handler: " << msg << std::endl;
+	}); 
+	// (or logger->set_error_handler(..) to set for specific logger)
 }
-```
-
----
-#### Replace the Default Logger
-```c++
-void replace_global_logger_example()
-{
-    auto new_logger = spdlog::basic_logger_mt("new_global_logger", "logs/new-default-log.txt", true);
-    spdlog::set_global_logger(new_logger);
-    spdlog::info("new logger log message");
-}
-```
-
----
-#### Log to Qt with nice colors
-```c++
-#include "spdlog/spdlog.h"
-#include "spdlog/sinks/qt_sinks.h"
-MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
-{
-    setMinimumSize(640, 480);
-    auto log_widget = new QTextEdit(this);
-    setCentralWidget(log_widget);
-    int max_lines = 500; // keep the text widget to max 500 lines. remove old lines if needed.
-    auto logger = spdlog::qt_color_logger_mt("qt_logger", log_widget, max_lines);
-    logger->info("Some info message");
-}
-```
-
----
-## Benchmarks
-
-Below are some [benchmarks](https://github.com/gabime/spdlog/blob/v2.x/bench/bench.cpp) done in Ubuntu 64 bit, Intel i7-4770 CPU @ 3.40GHz
-
-#### Synchronous mode
-```
-[info] **************************************************************
-[info] Single thread, 1,000,000 iterations
-[info] **************************************************************
-[info] basic_st         Elapsed: 0.17 secs        5,777,626/sec
-[info] rotating_st      Elapsed: 0.18 secs        5,475,894/sec
-[info] daily_st         Elapsed: 0.20 secs        5,062,659/sec
-[info] empty_logger     Elapsed: 0.07 secs       14,127,300/sec
-[info] **************************************************************
-[info] C-string (400 bytes). Single thread, 1,000,000 iterations
-[info] **************************************************************
-[info] basic_st         Elapsed: 0.41 secs        2,412,483/sec
-[info] rotating_st      Elapsed: 0.72 secs        1,389,196/sec
-[info] daily_st         Elapsed: 0.42 secs        2,393,298/sec
-[info] null_st          Elapsed: 0.04 secs       27,446,957/sec
-[info] **************************************************************
-[info] 10 threads, competing over the same logger object, 1,000,000 iterations
-[info] **************************************************************
-[info] basic_mt         Elapsed: 0.60 secs        1,659,613/sec
-[info] rotating_mt      Elapsed: 0.62 secs        1,612,493/sec
-[info] daily_mt         Elapsed: 0.61 secs        1,638,305/sec
-[info] null_mt          Elapsed: 0.16 secs        6,272,758/sec
-```
-#### Asynchronous mode
-```
-[info] -------------------------------------------------
-[info] Messages     : 1,000,000
-[info] Threads      : 10
-[info] Queue        : 8,192 slots
-[info] Queue memory : 8,192 x 272 = 2,176 KB 
-[info] -------------------------------------------------
-[info] 
-[info] *********************************
-[info] Queue Overflow Policy: block
-[info] *********************************
-[info] Elapsed: 1.70784 secs     585,535/sec
-[info] Elapsed: 1.69805 secs     588,910/sec
-[info] Elapsed: 1.7026 secs      587,337/sec
-[info] 
-[info] *********************************
-[info] Queue Overflow Policy: overrun
-[info] *********************************
-[info] Elapsed: 0.372816 secs    2,682,285/sec
-[info] Elapsed: 0.379758 secs    2,633,255/sec
-[info] Elapsed: 0.373532 secs    2,677,147/sec
 
 ```
 
 ## Documentation
 Documentation can be found in the [wiki](https://github.com/gabime/spdlog/wiki/1.-QuickStart) pages.
-
----
-
-Thanks to [JetBrains](https://www.jetbrains.com/?from=spdlog) for donating product licenses to help develop **spdlog** <a href="https://www.jetbrains.com/?from=spdlog"><img src="logos/jetbrains-variant-4.svg" width="94" align="center" /></a>

appveyor.yml

@@ -0,0 +1,32 @@
+version: 1.0.{build}
+image: Visual Studio 2015
+environment:
+  matrix:
+  - GENERATOR: '"MinGW Makefiles"'
+    BUILD_TYPE: Debug
+  - GENERATOR: '"MinGW Makefiles"'
+    BUILD_TYPE: Release
+  - GENERATOR: '"Visual Studio 14 2015"'
+    BUILD_TYPE: Debug
+  - GENERATOR: '"Visual Studio 14 2015"'
+    BUILD_TYPE: Release
+  - GENERATOR: '"Visual Studio 14 2015 Win64"'
+    BUILD_TYPE: Debug
+  - GENERATOR: '"Visual Studio 14 2015 Win64"'
+    BUILD_TYPE: Release
+build_script:
+- cmd: >-
+    set
+
+    mkdir build
+
+    cd build
+
+    set PATH=%PATH:C:\Program Files\Git\usr\bin;=%
+
+    set PATH=C:\mingw-w64\i686-5.3.0-posix-dwarf-rt_v4-rev0\mingw32\bin;%PATH%
+
+    cmake .. -G %GENERATOR% -DCMAKE_BUILD_TYPE=%BUILD_TYPE%
+
+    cmake --build . --config %BUILD_TYPE%
+test: off

bench/CMakeLists.txt

@@ -1,39 +0,0 @@
-# Copyright(c) 2019 spdlog authors Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-cmake_minimum_required(VERSION 3.14)
-project(spdlog_bench CXX)
-
-if(NOT TARGET spdlog)
-    # Stand-alone build
-    find_package(spdlog CONFIG REQUIRED)
-endif()
-
-find_package(Threads REQUIRED)
-find_package(benchmark CONFIG)
-
-if(NOT benchmark_FOUND)
-    message(STATUS "Using CMake Version ${CMAKE_VERSION}")
-    # User can fetch googlebenchmark
-    message(STATUS "Downloading GoogleBenchmark")
-    include(FetchContent)
-
-    # disable tests
-    set(BENCHMARK_ENABLE_TESTING OFF CACHE INTERNAL "")
-    # Do not build and run googlebenchmark tests
-    FetchContent_Declare(googlebenchmark GIT_REPOSITORY https://github.com/google/benchmark.git GIT_TAG v1.6.0)
-    FetchContent_MakeAvailable(googlebenchmark)
-    set_target_properties(benchmark PROPERTIES FOLDER "third-party")
-endif()
-
-add_executable(bench bench.cpp)
-spdlog_enable_warnings(bench)
-target_link_libraries(bench PRIVATE spdlog::spdlog)
-
-add_executable(async_bench async_bench.cpp)
-target_link_libraries(async_bench PRIVATE spdlog::spdlog)
-
-add_executable(latency latency.cpp)
-target_link_libraries(latency PRIVATE benchmark::benchmark spdlog::spdlog)
-
-add_executable(formatter-bench formatter-bench.cpp)
-target_link_libraries(formatter-bench PRIVATE benchmark::benchmark spdlog::spdlog)

bench/Makefile

@@ -0,0 +1,97 @@
+CXX	?= g++
+CXXFLAGS	= -march=native -Wall -Wextra -pedantic -std=c++11 -pthread -I../include
+CXX_RELEASE_FLAGS = -O3 -flto -DNDEBUG
+
+
+#         g2log-async
+binaries=spdlog-bench spdlog-bench-mt spdlog-async spdlog-null-async \
+         boost-bench boost-bench-mt \
+         glog-bench glog-bench-mt \
+         g3log-async \
+         p7-bench p7-bench-mt \
+         log4cpp-bench log4cpp-bench-mt \
+         log4cplus-bench log4cplus-bench-mt \
+         easylogging-bench easylogging-bench-mt easylogging-bench-async \
+         plog-bench plog-bench-mt
+
+all: $(binaries)
+
+spdlog-bench: spdlog-bench.cpp
+	$(CXX) spdlog-bench.cpp -o spdlog-bench $(CXXFLAGS) $(CXX_RELEASE_FLAGS)
+	
+spdlog-bench-mt: spdlog-bench-mt.cpp
+	$(CXX) spdlog-bench-mt.cpp -o spdlog-bench-mt  $(CXXFLAGS) $(CXX_RELEASE_FLAGS)
+	
+spdlog-async: spdlog-async.cpp
+	$(CXX) spdlog-async.cpp -o spdlog-async  $(CXXFLAGS) $(CXX_RELEASE_FLAGS)
+
+spdlog-null-async: spdlog-null-async.cpp
+	$(CXX) spdlog-null-async.cpp -o spdlog-null-async $(CXXFLAGS) $(CXX_RELEASE_FLAGS)
+
+BOOST_FLAGS	= -DBOOST_LOG_DYN_LINK -I$(HOME)/include -I/usr/include -L$(HOME)/lib -lboost_log_setup -lboost_log -lboost_filesystem -lboost_system -lboost_thread -lboost_regex -lboost_date_time -lboost_chrono
+
+boost-bench: boost-bench.cpp
+	$(CXX) boost-bench.cpp -o boost-bench $(CXXFLAGS) $(BOOST_FLAGS) $(CXX_RELEASE_FLAGS)
+	
+boost-bench-mt: boost-bench-mt.cpp
+	$(CXX) boost-bench-mt.cpp -o boost-bench-mt $(CXXFLAGS) $(BOOST_FLAGS) $(CXX_RELEASE_FLAGS)	
+
+GLOG_FLAGS = -I$(HOME)/include -L$(HOME)/lib -lglog
+glog-bench: glog-bench.cpp
+	$(CXX) glog-bench.cpp -o glog-bench $(CXXFLAGS) $(GLOG_FLAGS) $(CXX_RELEASE_FLAGS)
+	
+glog-bench-mt: glog-bench-mt.cpp
+	$(CXX) glog-bench-mt.cpp -o glog-bench-mt $(CXXFLAGS) $(GLOG_FLAGS) $(CXX_RELEASE_FLAGS)	
+
+G2LOG_FLAGS = -I$(HOME)/include -L$(HOME)/lib -llib_g2logger 
+g2log-async: g2log-async.cpp
+	$(CXX) g2log-async.cpp -o g2log-async $(CXXFLAGS) $(G2LOG_FLAGS) $(CXX_RELEASE_FLAGS)
+	
+G3LOG_FLAGS = -I$(HOME)/include -L$(HOME)/lib -lg3logger
+g3log-async: g3log-async.cpp
+	$(CXX) g3log-async.cpp -o g3log-async $(CXXFLAGS) $(G3LOG_FLAGS) $(CXX_RELEASE_FLAGS)
+
+P7_FLAGS = -I$(HOME)/P7/Headers -I$(HOME)/include -L$(HOME)/lib -lP7
+p7-bench: p7-bench.cpp
+	$(CXX) p7-bench.cpp -o p7-bench $(CXXFLAGS) $(P7_FLAGS) $(CXX_RELEASE_FLAGS)
+
+p7-bench-mt: p7-bench-mt.cpp
+	$(CXX) p7-bench-mt.cpp -o p7-bench-mt $(CXXFLAGS) $(P7_FLAGS) $(CXX_RELEASE_FLAGS)
+
+LOG4CPP_FLAGS = -I$(HOME)/include -L$(HOME)/lib -llog4cpp
+log4cpp-bench: log4cpp-bench.cpp
+	$(CXX) log4cpp-bench.cpp -o log4cpp-bench $(CXXFLAGS) $(LOG4CPP_FLAGS) $(CXX_RELEASE_FLAGS)
+
+log4cpp-bench-mt: log4cpp-bench-mt.cpp
+	$(CXX) log4cpp-bench-mt.cpp -o log4cpp-bench-mt $(CXXFLAGS) $(LOG4CPP_FLAGS) $(CXX_RELEASE_FLAGS)
+
+LOG4CPLUS_FLAGS = -I$(HOME)/include -L$(HOME)/lib -llog4cplus
+log4cplus-bench: log4cplus-bench.cpp
+	$(CXX) log4cplus-bench.cpp -o log4cplus-bench $(CXXFLAGS) $(LOG4CPLUS_FLAGS) $(CXX_RELEASE_FLAGS)
+
+log4cplus-bench-mt: log4cplus-bench-mt.cpp
+	$(CXX) log4cplus-bench-mt.cpp -o log4cplus-bench-mt $(CXXFLAGS) $(LOG4CPLUS_FLAGS) $(CXX_RELEASE_FLAGS)
+
+EASYL_FLAGS = -I$(HOME)/easyloggingpp/src
+easylogging-bench: easylogging-bench.cpp
+	$(CXX) easylogging-bench.cpp -o easylogging-bench $(CXXFLAGS) $(EASYL_FLAGS) $(CXX_RELEASE_FLAGS)
+
+easylogging-bench-mt: easylogging-bench-mt.cpp
+	$(CXX) easylogging-bench-mt.cpp -o easylogging-bench-mt $(CXXFLAGS) $(EASYL_FLAGS) $(CXX_RELEASE_FLAGS)
+
+easylogging-bench-async: easylogging-bench-async.cpp
+	$(CXX) easylogging-bench-async.cpp -o easylogging-bench-async $(CXXFLAGS) $(EASYL_FLAGS) $(CXX_RELEASE_FLAGS)
+
+PLOG_FLAGS = -I$(HOME)/include
+plog-bench: plog-bench.cpp
+	$(CXX) plog-bench.cpp -o plog-bench $(CXXFLAGS) $(PLOG_FLAGS) $(CXX_RELEASE_FLAGS)
+
+plog-bench-mt: plog-bench-mt.cpp
+	$(CXX) plog-bench-mt.cpp -o plog-bench-mt $(CXXFLAGS) $(PLOG_FLAGS) $(CXX_RELEASE_FLAGS)
+
+.PHONY: clean
+
+clean:
+	rm -f *.o logs/* $(binaries)
+
+rebuild: clean all

bench/Makefile.mingw

@@ -0,0 +1,57 @@
+CXX	?= g++
+CXXFLAGS	= -D_WIN32_WINNT=0x600 -march=native -Wall -Wextra -pedantic -std=c++11 -pthread -Wl,--no-as-needed  -I../include 
+CXX_RELEASE_FLAGS = -O3 -flto
+
+
+binaries=spdlog-bench spdlog-bench-mt spdlog-async boost-bench boost-bench-mt glog-bench glog-bench-mt g2log-async easylogging-bench easylogging-bench-mt
+
+all: $(binaries)
+
+spdlog-bench: spdlog-bench.cpp
+	$(CXX) spdlog-bench.cpp -o spdlog-bench $(CXXFLAGS) $(CXX_RELEASE_FLAGS)
+	
+spdlog-bench-mt: spdlog-bench-mt.cpp
+	$(CXX) spdlog-bench-mt.cpp -o spdlog-bench-mt  $(CXXFLAGS) $(CXX_RELEASE_FLAGS)
+	
+spdlog-async: spdlog-async.cpp
+	$(CXX) spdlog-async.cpp -o spdlog-async  $(CXXFLAGS) $(CXX_RELEASE_FLAGS)
+	
+
+BOOST_FLAGS	= -DBOOST_LOG_DYN_LINK  -I/home/gabi/devel/boost_1_56_0/ -L/home/gabi/devel/boost_1_56_0/stage/lib -lboost_log  -lboost_log_setup -lboost_filesystem -lboost_system -lboost_thread -lboost_regex -lboost_date_time -lboost_chrono	
+
+boost-bench: boost-bench.cpp
+	$(CXX) boost-bench.cpp -o boost-bench $(CXXFLAGS) $(BOOST_FLAGS) $(CXX_RELEASE_FLAGS)
+	
+boost-bench-mt: boost-bench-mt.cpp
+	$(CXX) boost-bench-mt.cpp -o boost-bench-mt $(CXXFLAGS) $(BOOST_FLAGS) $(CXX_RELEASE_FLAGS)	
+
+
+GLOG_FLAGS = -lglog
+glog-bench: glog-bench.cpp
+	$(CXX) glog-bench.cpp -o glog-bench $(CXXFLAGS) $(GLOG_FLAGS) $(CXX_RELEASE_FLAGS)
+	
+glog-bench-mt: glog-bench-mt.cpp
+	$(CXX) glog-bench-mt.cpp -o glog-bench-mt $(CXXFLAGS) $(GLOG_FLAGS) $(CXX_RELEASE_FLAGS)	
+
+
+G2LOG_FLAGS = -I/home/gabi/devel/g2log/g2log/src -L/home/gabi/devel/g2log/g2log -llib_g2logger 
+g2log-async: g2log-async.cpp
+	$(CXX) g2log-async.cpp -o g2log-async $(CXXFLAGS) $(G2LOG_FLAGS) $(CXX_RELEASE_FLAGS)
+	
+
+EASYL_FLAGS = -I../../easylogging/src/
+easylogging-bench: easylogging-bench.cpp
+	$(CXX) easylogging-bench.cpp -o easylogging-bench $(CXXFLAGS) $(EASYL_FLAGS) $(CXX_RELEASE_FLAGS)
+easylogging-bench-mt: easylogging-bench-mt.cpp
+	$(CXX) easylogging-bench-mt.cpp -o easylogging-bench-mt $(CXXFLAGS) $(EASYL_FLAGS) $(CXX_RELEASE_FLAGS)	
+	
+.PHONY: clean
+
+clean:
+	rm -f *.o logs/* $(binaries)
+
+
+rebuild: clean all
+
+
+

bench/README.md

@@ -0,0 +1,14 @@
+# loggers
+
+Name | License | Lang. | Year | Platform | Compiler | Dependence | URL
+--- | --- | --- | --- | --- | --- | --- | ---
+Pantheios | BSD | C++ | 2017 | Windows, Linux, MacOSX | VC++, GCC(3.2+), Intel, Borland, Comeau, Digital Mars, Metrowerks | STLSoft | http://www.pantheios.org/ <br> http://blog.pantheios.org/ <br> https://github.com/synesissoftware/Pantheios <br> http://www.pantheios.org/performance.html
+Glog | 3-clause BSD| C++| 2017 | Windows, Linux, MacOSX | VC++, GCC, Clang, intel| Google gflags | https://github.com/google/glog
+G3log | Public Domain | C++11 | 2018 | Windows, Linux, MacOSX, iPhoneOS | VC++, GCC, Clang, MinGW | None | https://github.com/KjellKod/g3log <br> https://github.com/KjellKod/g3sinks <br> https://kjellkod.wordpress.com/2014/08/16/presenting-g3log-the-next-version-of-the-next-generation-of-loggers/ <br> https://kjellkod.wordpress.com/2015/06/30/the-worlds-fastest-logger-vs-g3log/
+P7 | LGPL | C++, C, C#, Python | 2017 | Windows, Linux | VC++, GCC, Clang, MinGW | None | http://baical.net/p7.html
+log4cpp | LGPL | C++ | 2017 | Windows, Linux, MacOSX | VC++, GCC, Sun CC, OpenVMS | Boost | http://log4cpp.sourceforge.net/
+log4cplus | 2-clause BSD or Apache 2 | C++ | 2017 | Windows, Linux, MacOSX, Android | VC++, GCC, Clang | Boost | https://github.com/log4cplus/log4cplus <br> https://sourceforge.net/p/log4cplus/wiki/Home/
+Easylogging | MIT | C++11 | 2018 | Windows, Linux, MacOSX, iPhoneOS, Android | VC++, GCC, Clang, Intel, MinGW | None | https://github.com/muflihun/easyloggingpp
+Spdlog | MIT | C++11 | 2018 | Windows, Linux, MacOSX, iPhoneOS, Android(logcat) | VC++, GCC, Clang, MinGW | None, Headers only library | https://github.com/gabime/spdlog <br> https://github.com/fmtlib/fmt
+Boost.Log v2 | Boost | C++ | 2016 | Windows, Linux, MacOSX, iPhoneOS, Android | VC++, GCC, Clang | Boost | https://github.com/boostorg/log <br> http://www.boost.org/doc/libs/1_66_0/libs/log/doc/html/index.html
+plog | MPL 2.0 | C++ | 2017 | Windows, Linux, MacOSX, iPhoneOS, Android | gcc, clang, msvc, mingw, mingw-w64, icc, c++builder | None, Headers only library | https://github.com/SergiusTheBest/plog

bench/async_bench.cpp

@@ -1,160 +0,0 @@
-//
-// Copyright(c) 2015 Gabi Melman.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-//
-
-//
-// bench.cpp : spdlog benchmarks
-//
-#include <algorithm>
-#include <atomic>
-#include <fstream>
-#include <iostream>
-#include <locale>
-#include <memory>
-#include <string>
-#include <thread>
-
-#include "spdlog/sinks/async_sink.h"
-#include "spdlog/sinks/basic_file_sink.h"
-#include "spdlog/spdlog.h"
-
-using namespace std;
-using namespace std::chrono;
-using namespace spdlog;
-using namespace spdlog::sinks;
-
-void bench_mt(int howmany, std::shared_ptr<spdlog::logger> log, int thread_count);
-
-int count_lines(const char *filename) {
-    std::ifstream ifs(filename);
-    return std::count(std::istreambuf_iterator(ifs), std::istreambuf_iterator<char>(), '\n');
-}
-
-void verify_file(const char *filename, int expected_count) {
-    spdlog::info("Verifying {} to contain {} line..", filename, expected_count);
-    auto count = count_lines(filename);
-    if (count != expected_count) {
-        spdlog::error("Test failed. {} has {} lines instead of {}", filename, count, expected_count);
-        exit(1);
-    }
-    spdlog::info("Line count OK ({})\n", count);
-}
-
-#ifdef _MSC_VER
-    #pragma warning(pop)
-#endif
-
-using namespace spdlog::sinks;
-
-int main(int argc, char *argv[]) {
-    // setlocale to show thousands separators
-    std::locale::global(std::locale("en_US.UTF-8"));
-    int howmany = 1000000;
-    int queue_size = std::min(howmany + 2, 8192);
-    int threads = 10;
-    int iters = 3;
-
-    try {
-        spdlog::set_pattern("[%^%l%$] %v");
-        if (argc > 1 && (std::string(argv[1]) == "-h" || std::string(argv[1]) == "--help")) {
-            spdlog::info("Usage: {} <message_count> <threads> <q_size> <iterations>", argv[0]);
-            return 0;
-        }
-
-        if (argc > 1) howmany = atoi(argv[1]);
-        if (argc > 2) threads = atoi(argv[2]);
-        if (argc > 3) {
-            queue_size = atoi(argv[3]);
-            if (queue_size > 500000) {
-                spdlog::error("Max queue size allowed: 500,000");
-                exit(1);
-            }
-        }
-
-        if (argc > 4) iters = atoi(argv[4]);
-        // validate all argc values
-        if (howmany < 1 || threads < 1 || queue_size < 1 || iters < 1) {
-            spdlog::error("Invalid input values");
-            exit(1);
-        }
-
-        auto slot_size = sizeof(details::async_log_msg);
-        spdlog::info("-------------------------------------------------");
-        spdlog::info("Messages     : {:L}", howmany);
-        spdlog::info("Threads      : {:L}", threads);
-        spdlog::info("Queue        : {:L} slots", queue_size);
-        spdlog::info("Queue memory : {:L} x {:L} = {:L} KB ", queue_size, slot_size, (queue_size * slot_size) / 1024);
-        spdlog::info("Total iters  : {:L}", iters);
-        spdlog::info("-------------------------------------------------");
-
-        const char *filename = "logs/basic_async.log";
-        spdlog::info("");
-        spdlog::info("*********************************");
-        spdlog::info("Queue Overflow Policy: block");
-        spdlog::info("*********************************");
-        for (int i = 0; i < iters; i++) {
-            {
-                auto file_sink = std::make_shared<basic_file_sink_mt>(filename, true);
-                auto cfg = async_sink::config();
-                cfg.queue_size = queue_size;
-                cfg.sinks.push_back(std::move(file_sink));
-                auto async_sink = std::make_shared<sinks::async_sink>(cfg);
-                auto logger = std::make_shared<spdlog::logger>("async_logger", std::move(async_sink));
-                bench_mt(howmany, std::move(logger), threads);
-            }
-            // verify_file(filename, howmany); // in separate scope to ensure logger is destroyed and all logs were written
-        }
-        spdlog::info("");
-        spdlog::info("*********************************");
-        spdlog::info("Queue Overflow Policy: overrun");
-        spdlog::info("*********************************");
-        // do same test but discard the oldest if queue is full instead of blocking
-        filename = "logs/basic_async-overrun.log";
-        for (int i = 0; i < iters; i++) {
-            async_sink::config cfg;
-            cfg.policy = async_sink::overflow_policy::overrun_oldest;
-            cfg.queue_size = queue_size;
-            auto file_sink = std::make_shared<basic_file_sink_mt>(filename, true);
-            cfg.sinks.push_back(std::move(file_sink));
-            auto async_sink = std::make_shared<sinks::async_sink>(cfg);
-            auto logger = std::make_shared<spdlog::logger>("async_logger", std::move(async_sink));
-            bench_mt(howmany, std::move(logger), threads);
-        }
-        spdlog::shutdown();
-    } catch (std::exception &ex) {
-        std::cerr << "Error: " << ex.what() << std::endl;
-        perror("Last error");
-        return 1;
-    }
-    return 0;
-}
-
-void thread_fun(std::shared_ptr<spdlog::logger> logger, int howmany) {
-    for (int i = 0; i < howmany; i++) {
-        logger->info("Hello logger: msg number {}", i);
-    }
-}
-
-void bench_mt(int howmany, std::shared_ptr<spdlog::logger> logger, int thread_count) {
-    using std::chrono::high_resolution_clock;
-    vector<std::thread> threads;
-    auto start = high_resolution_clock::now();
-
-    int msgs_per_thread = howmany / thread_count;
-    int msgs_per_thread_mod = howmany % thread_count;
-    for (int t = 0; t < thread_count; ++t) {
-        if (t == 0 && msgs_per_thread_mod)
-            threads.push_back(std::thread(thread_fun, logger, msgs_per_thread + msgs_per_thread_mod));
-        else
-            threads.push_back(std::thread(thread_fun, logger, msgs_per_thread));
-    }
-
-    for (auto &t : threads) {
-        t.join();
-    }
-
-    auto delta = high_resolution_clock::now() - start;
-    auto delta_d = duration_cast<duration<double>>(delta).count();
-    spdlog::info("Elapsed: {} secs\t {:L}/sec", delta_d, static_cast<int>(howmany / delta_d));
-}

bench/bench.cpp

@@ -1,201 +0,0 @@
-//
-// Copyright(c) 2015 Gabi Melman.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-//
-
-//
-// bench.cpp : spdlog benchmarks
-//
-#include <fmt/format.h>
-
-#include <atomic>
-#include <cstdlib>  // EXIT_FAILURE
-#include <memory>
-#include <string>
-#include <thread>
-
-#include "spdlog/sinks/basic_file_sink.h"
-#include "spdlog/sinks/daily_file_sink.h"
-#include "spdlog/sinks/null_sink.h"
-#include "spdlog/sinks/rotating_file_sink.h"
-#include "spdlog/spdlog.h"
-#include "utils.h"
-
-void bench(int howmany, std::shared_ptr<spdlog::logger> log);
-void bench_mt(int howmany, std::shared_ptr<spdlog::logger> log, size_t thread_count);
-
-// void bench_default_api(int howmany, std::shared_ptr<spdlog::logger> log);
-// void bench_c_string(int howmany, std::shared_ptr<spdlog::logger> log);
-
-static const size_t file_size = 30 * 1024 * 1024;
-static const size_t rotating_files = 5;
-static const int max_threads = 1000;
-
-using namespace spdlog::sinks;
-void bench_threaded_logging(size_t threads, int iters) {
-    spdlog::info("**************************************************************");
-    spdlog::info(
-        spdlog::fmt_lib::format(std::locale("en_US.UTF-8"), "Multi threaded: {:L} threads, {:L} messages", threads, iters));
-    spdlog::info("**************************************************************");
-
-    auto basic_mt = spdlog::create<basic_file_sink_mt>("basic_mt", "logs/basic_mt.log", true);
-    bench_mt(iters, std::move(basic_mt), threads);
-
-    spdlog::info("");
-    auto rotating_mt = spdlog::create<rotating_file_sink_mt>("rotating_mt", "logs/rotating_mt.log", file_size, rotating_files);
-    bench_mt(iters, std::move(rotating_mt), threads);
-
-    spdlog::info("");
-    auto daily_mt = spdlog::create<daily_file_sink_mt>("daily_mt", "logs/daily_mt.log", 0, 1);
-    bench_mt(iters, std::move(daily_mt), threads);
-
-    spdlog::info("");
-    auto empty_logger = std::make_shared<spdlog::logger>("level-off");
-    empty_logger->set_level(spdlog::level::off);
-    bench(iters, empty_logger);
-}
-
-void bench_single_threaded(int iters) {
-    spdlog::info("**************************************************************");
-    spdlog::info(spdlog::fmt_lib::format(std::locale("en_US.UTF-8"), "Single threaded: {} messages", iters));
-    spdlog::info("**************************************************************");
-
-    auto basic_st = spdlog::create<basic_file_sink_st>("basic_st", "logs/basic_st.log", true);
-    bench(iters, std::move(basic_st));
-
-    spdlog::info("");
-    auto rotating_st = spdlog::create<rotating_file_sink_st>("rotating_st", "logs/rotating_st.log", file_size, rotating_files);
-    bench(iters, std::move(rotating_st));
-
-    spdlog::info("");
-    auto daily_st = spdlog::create<daily_file_sink_st>("daily_st", "logs/daily_st.log", 0, 1);
-    bench(iters, std::move(daily_st));
-
-    spdlog::info("");
-    auto empty_logger = std::make_shared<spdlog::logger>("level-off");
-    empty_logger->set_level(spdlog::level::off);
-    bench(iters, empty_logger);
-}
-
-int main(int argc, char *argv[]) {
-    spdlog::global_logger()->set_pattern("[%^%l%$] %v");
-    int iters = 250000;
-    size_t threads = 4;
-    try {
-        if (argc > 1) {
-            iters = std::stoi(argv[1]);
-        }
-        if (argc > 2) {
-            threads = std::stoul(argv[2]);
-        }
-
-        if (threads > max_threads) {
-            throw std::runtime_error(spdlog::fmt_lib::format("Number of threads exceeds maximum({})", max_threads));
-        }
-
-        bench_single_threaded(iters);
-        bench_threaded_logging(1, iters);
-        bench_threaded_logging(threads, iters);
-    } catch (std::exception &ex) {
-        spdlog::error(ex.what());
-        return EXIT_FAILURE;
-    }
-    return EXIT_SUCCESS;
-}
-
-void bench(int howmany, std::shared_ptr<spdlog::logger> log) {
-    using std::chrono::duration;
-    using std::chrono::duration_cast;
-    using std::chrono::high_resolution_clock;
-
-    auto start = high_resolution_clock::now();
-    for (auto i = 0; i < howmany; ++i) {
-        log->info("Hello logger: msg number {}", i);
-    }
-
-    auto delta = high_resolution_clock::now() - start;
-    auto delta_d = duration_cast<duration<double>>(delta).count();
-
-    spdlog::info(spdlog::fmt_lib::format(std::locale("en_US.UTF-8"), "{:<30} Elapsed: {:0.2f} secs {:>16L}/sec", log->name(),
-                                         delta_d, static_cast<size_t>(howmany / delta_d)));
-}
-
-void bench_mt(int howmany, std::shared_ptr<spdlog::logger> log, size_t thread_count) {
-    using std::chrono::duration;
-    using std::chrono::duration_cast;
-    using std::chrono::high_resolution_clock;
-
-    std::vector<std::thread> threads;
-    threads.reserve(thread_count);
-    auto start = high_resolution_clock::now();
-    for (size_t t = 0; t < thread_count; ++t) {
-        threads.emplace_back([&]() {
-            for (int j = 0; j < howmany / static_cast<int>(thread_count); j++) {
-                log->info("Hello logger: msg number {}", j);
-            }
-        });
-    }
-
-    for (auto &t : threads) {
-        t.join();
-    }
-
-    auto delta = high_resolution_clock::now() - start;
-    auto delta_d = duration_cast<duration<double>>(delta).count();
-    spdlog::info(spdlog::fmt_lib::format(std::locale("en_US.UTF-8"), "{:<30} Elapsed: {:0.2f} secs {:>16L}/sec", log->name(),
-                                         delta_d, static_cast<size_t>(howmany / delta_d)));
-}
-
-/*
-void bench_default_api(int howmany, std::shared_ptr<spdlog::logger> log)
-{
-    using std::chrono::high_resolution_clock;
-    using std::chrono::duration;
-    using std::chrono::duration_cast;
-
-    auto orig_default = spdlog::global_logger();
-    spdlog::set_global_logger(log);
-    auto start = high_resolution_clock::now();
-    for (auto i = 0; i < howmany; ++i)
-    {
-        spdlog::info("Hello logger: msg number {}", i);
-    }
-
-    auto delta = high_resolution_clock::now() - start;
-    auto delta_d = duration_cast<duration<double>>(delta).count();
-    spdlog::drop(log->name());
-    spdlog::set_global_logger(std::move(orig_default));
-    spdlog::info("{:<30} Elapsed: {:0.2f} secs {:>16}/sec", log->name(), delta_d, int(howmany /
-delta_d));
-}
-
-void bench_c_string(int howmany, std::shared_ptr<spdlog::logger> log)
-{
-    using std::chrono::high_resolution_clock;
-    using std::chrono::duration;
-    using std::chrono::duration_cast;
-
-    const char *msg = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vestibulum pharetra
-metus cursus " "lacus placerat congue. Nulla egestas, mauris a tincidunt tempus, enim lectus
-volutpat mi, eu consequat sem " "libero nec massa. In dapibus ipsum a diam rhoncus gravida. Etiam
-non dapibus eros. Donec fringilla dui sed " "augue pretium, nec scelerisque est maximus. Nullam
-convallis, sem nec blandit maximus, nisi turpis ornare " "nisl, sit amet volutpat neque massa eu
-odio. Maecenas malesuada quam ex, posuere congue nibh turpis duis.";
-
-    auto orig_default = spdlog::global_logger();
-    spdlog::set_global_logger(log);
-    auto start = high_resolution_clock::now();
-    for (auto i = 0; i < howmany; ++i)
-    {
-        spdlog::log(spdlog::level::info, msg);
-    }
-
-    auto delta = high_resolution_clock::now() - start;
-    auto delta_d = duration_cast<duration<double>>(delta).count();
-    spdlog::drop(log->name());
-    spdlog::set_global_logger(std::move(orig_default));
-    spdlog::info("{:<30} Elapsed: {:0.2f} secs {:>16}/sec", log->name(), delta_d, int(howmany /
-delta_d));
-}
-
-*/

bench/boost-bench-mt.cpp

@@ -0,0 +1,86 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#include <atomic>
+#include <chrono>
+#include <iostream>
+#include <thread>
+#include <vector>
+
+#include <boost/log/core.hpp>
+#include <boost/log/expressions.hpp>
+#include <boost/log/sinks/text_file_backend.hpp>
+#include <boost/log/sources/record_ostream.hpp>
+#include <boost/log/sources/severity_logger.hpp>
+#include <boost/log/trivial.hpp>
+#include <boost/log/utility/setup/common_attributes.hpp>
+#include <boost/log/utility/setup/file.hpp>
+
+namespace logging = boost::log;
+namespace src = boost::log::sources;
+namespace sinks = boost::log::sinks;
+namespace keywords = boost::log::keywords;
+
+void init()
+{
+    logging::add_file_log(keywords::file_name = "logs/boost-bench-mt_%N.log", /*< file name pattern >*/
+        keywords::auto_flush = false, keywords::format = "[%TimeStamp%]: %Message%");
+
+    logging::core::get()->set_filter(logging::trivial::severity >= logging::trivial::info);
+}
+
+using namespace std;
+
+int main(int argc, char *argv[])
+{
+    using namespace std::chrono;
+    using clock = steady_clock;
+
+    int thread_count = 10;
+    if (argc > 1)
+        thread_count = atoi(argv[1]);
+
+    int howmany = 1000000;
+
+    init();
+    logging::add_common_attributes();
+
+    using namespace logging::trivial;
+
+    src::severity_logger_mt<severity_level> lg;
+
+    std::atomic<int> msg_counter{0};
+    vector<thread> threads;
+
+    auto start = clock::now();
+    for (int t = 0; t < thread_count; ++t)
+    {
+        threads.push_back(std::thread([&]() {
+            while (true)
+            {
+                int counter = ++msg_counter;
+                if (counter > howmany)
+                    break;
+                BOOST_LOG_SEV(lg, info) << "boost message #" << counter << ": This is some text for your pleasure";
+            }
+        }));
+    }
+
+    for (auto &t : threads)
+    {
+        t.join();
+    }
+
+    duration<float> delta = clock::now() - start;
+    float deltaf = delta.count();
+    auto rate = howmany / deltaf;
+
+    std::cout << "Total: " << howmany << std::endl;
+    std::cout << "Threads: " << thread_count << std::endl;
+    std::cout << "Delta = " << deltaf << " seconds" << std::endl;
+    std::cout << "Rate = " << rate << "/sec" << std::endl;
+
+    return 0;
+}

bench/boost-bench.cpp

@@ -0,0 +1,56 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#include <chrono>
+#include <iostream>
+
+#include <boost/log/core.hpp>
+#include <boost/log/expressions.hpp>
+#include <boost/log/sinks/text_file_backend.hpp>
+#include <boost/log/sources/record_ostream.hpp>
+#include <boost/log/sources/severity_logger.hpp>
+#include <boost/log/trivial.hpp>
+#include <boost/log/utility/setup/common_attributes.hpp>
+#include <boost/log/utility/setup/file.hpp>
+
+namespace logging = boost::log;
+namespace src = boost::log::sources;
+namespace sinks = boost::log::sinks;
+namespace keywords = boost::log::keywords;
+
+void init()
+{
+    logging::add_file_log(keywords::file_name = "logs/boost-bench_%N.log", /*< file name pattern >*/
+        keywords::auto_flush = false, keywords::format = "[%TimeStamp%]: %Message%");
+
+    logging::core::get()->set_filter(logging::trivial::severity >= logging::trivial::info);
+}
+
+int main(int, char *[])
+{
+    using namespace std::chrono;
+    using clock = steady_clock;
+
+    int howmany = 1000000;
+    init();
+    logging::add_common_attributes();
+
+    using namespace logging::trivial;
+    src::severity_logger_mt<severity_level> lg;
+
+    auto start = clock::now();
+    for (int i = 0; i < howmany; ++i)
+        BOOST_LOG_SEV(lg, info) << "boost message #" << i << ": This is some text for your pleasure";
+
+    duration<float> delta = clock::now() - start;
+    float deltaf = delta.count();
+    auto rate = howmany / deltaf;
+
+    std::cout << "Total: " << howmany << std::endl;
+    std::cout << "Delta = " << deltaf << " seconds" << std::endl;
+    std::cout << "Rate = " << rate << "/sec" << std::endl;
+
+    return 0;
+}

bench/easyl-async.conf

@@ -0,0 +1,10 @@
+* GLOBAL:
+    FORMAT                  =   "[%datetime]: %levshort %thread %msg"
+    FILENAME                =   ./logs/easylogging-async.log
+    ENABLED                 =   true
+    TO_FILE                 =   true
+    TO_STANDARD_OUTPUT      =   false
+    MILLISECONDS_WIDTH      =   3
+    PERFORMANCE_TRACKING    =   false
+    MAX_LOG_FILE_SIZE       =   10485760
+    Log_Flush_Threshold		= 	10485760

bench/easyl-mt.conf

@@ -0,0 +1,10 @@
+* GLOBAL:
+    FORMAT                  =   "[%datetime]: %levshort %thread %msg"
+    FILENAME                =   ./logs/easylogging-mt.log
+    ENABLED                 =   true
+    TO_FILE                 =   true
+    TO_STANDARD_OUTPUT      =   false
+    MILLISECONDS_WIDTH      =   3
+    PERFORMANCE_TRACKING    =   false
+    MAX_LOG_FILE_SIZE       =   10485760
+    Log_Flush_Threshold		= 	10485760

bench/easyl.conf

@@ -0,0 +1,10 @@
+* GLOBAL:
+    FORMAT                  =   "[%datetime]: %levshort %msg"
+    FILENAME                =   ./logs/easylogging.log
+    ENABLED                 =   true
+    TO_FILE                 =   true
+    TO_STANDARD_OUTPUT      =   false
+    MILLISECONDS_WIDTH      =   3
+    PERFORMANCE_TRACKING    =   false
+    MAX_LOG_FILE_SIZE       =   10485760
+    Log_Flush_Threshold		= 	10485760

bench/easylogging-bench-async.cpp

@@ -0,0 +1,67 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#include <atomic>
+#include <chrono>
+#include <iostream>
+#include <thread>
+#include <vector>
+
+#define ELPP_THREAD_SAFE
+#define ELPP_EXPERIMENTAL_ASYNC
+#include "easylogging++.cc"
+#include "easylogging++.h"
+INITIALIZE_EASYLOGGINGPP
+
+using namespace std;
+
+int main(int argc, char *argv[])
+{
+    using namespace std::chrono;
+    using clock = steady_clock;
+
+    int thread_count = 10;
+    if (argc > 1)
+        thread_count = atoi(argv[1]);
+
+    int howmany = 1000000;
+
+    // Load configuration from file
+    el::Configurations conf("easyl-async.conf");
+    el::Loggers::reconfigureLogger("default", conf);
+
+    std::atomic<int> msg_counter{0};
+    vector<thread> threads;
+
+    auto start = clock::now();
+    for (int t = 0; t < thread_count; ++t)
+    {
+        threads.push_back(std::thread([&]() {
+            while (true)
+            {
+                int counter = ++msg_counter;
+                if (counter > howmany)
+                    break;
+                LOG(INFO) << "easylog message #" << counter << ": This is some text for your pleasure";
+            }
+        }));
+    }
+
+    for (auto &t : threads)
+    {
+        t.join();
+    }
+
+    duration<float> delta = clock::now() - start;
+    float deltaf = delta.count();
+    auto rate = howmany / deltaf;
+
+    std::cout << "Total: " << howmany << std::endl;
+    std::cout << "Threads: " << thread_count << std::endl;
+    std::cout << "Delta = " << deltaf << " seconds" << std::endl;
+    std::cout << "Rate = " << rate << "/sec" << std::endl;
+
+    return 0;
+}

bench/easylogging-bench-mt.cpp

@@ -0,0 +1,66 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#include <atomic>
+#include <chrono>
+#include <iostream>
+#include <thread>
+#include <vector>
+
+#define ELPP_THREAD_SAFE
+#include "easylogging++.cc"
+#include "easylogging++.h"
+INITIALIZE_EASYLOGGINGPP
+
+using namespace std;
+
+int main(int argc, char *argv[])
+{
+    using namespace std::chrono;
+    using clock = steady_clock;
+
+    int thread_count = 10;
+    if (argc > 1)
+        thread_count = atoi(argv[1]);
+
+    int howmany = 1000000;
+
+    // Load configuration from file
+    el::Configurations conf("easyl-mt.conf");
+    el::Loggers::reconfigureLogger("default", conf);
+
+    std::atomic<int> msg_counter{0};
+    vector<thread> threads;
+
+    auto start = clock::now();
+    for (int t = 0; t < thread_count; ++t)
+    {
+        threads.push_back(std::thread([&]() {
+            while (true)
+            {
+                int counter = ++msg_counter;
+                if (counter > howmany)
+                    break;
+                LOG(INFO) << "easylog message #" << counter << ": This is some text for your pleasure";
+            }
+        }));
+    }
+
+    for (auto &t : threads)
+    {
+        t.join();
+    }
+
+    duration<float> delta = clock::now() - start;
+    float deltaf = delta.count();
+    auto rate = howmany / deltaf;
+
+    std::cout << "Total: " << howmany << std::endl;
+    std::cout << "Threads: " << thread_count << std::endl;
+    std::cout << "Delta = " << deltaf << " seconds" << std::endl;
+    std::cout << "Rate = " << rate << "/sec" << std::endl;
+
+    return 0;
+}

bench/easylogging-bench.cpp

@@ -0,0 +1,39 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#include <chrono>
+#include <iostream>
+
+#include "easylogging++.cc"
+#include "easylogging++.h"
+INITIALIZE_EASYLOGGINGPP
+
+int main(int, char *[])
+{
+    using namespace std::chrono;
+    using clock = steady_clock;
+
+    int howmany = 1000000;
+
+    // Load configuration from file
+    el::Configurations conf("easyl.conf");
+    el::Loggers::reconfigureLogger("default", conf);
+
+    el::Logger *defaultLogger = el::Loggers::getLogger("default");
+
+    auto start = clock::now();
+    for (int i = 0; i < howmany; ++i)
+        LOG(INFO) << "easylog message #" << i << ": This is some text for your pleasure";
+
+    duration<float> delta = clock::now() - start;
+    float deltaf = delta.count();
+    auto rate = howmany / deltaf;
+
+    std::cout << "Total: " << howmany << std::endl;
+    std::cout << "Delta = " << deltaf << " seconds" << std::endl;
+    std::cout << "Rate = " << rate << "/sec" << std::endl;
+
+    return 0;
+}

bench/formatter-bench.cpp

@@ -1,68 +0,0 @@
-//
-// Copyright(c) 2018 Gabi Melman.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-//
-
-#include "benchmark/benchmark.h"
-#include "spdlog/pattern_formatter.h"
-#include "spdlog/spdlog.h"
-
-void bench_formatter(benchmark::State &state, std::string pattern) {
-    auto formatter = std::make_unique<spdlog::pattern_formatter>(pattern);
-    spdlog::memory_buf_t dest;
-    std::string logger_name = "logger-name";
-    const char *text = "Hello. This is some message with length of 80                                   ";
-
-    spdlog::source_loc source_loc{"a/b/c/d/myfile.cpp", 123, "some_func()"};
-    spdlog::details::log_msg msg(source_loc, logger_name, spdlog::level::info, text);
-
-    for (auto _ : state) {
-        dest.clear();
-        formatter->format(msg, dest);
-        benchmark::DoNotOptimize(dest);
-    }
-}
-
-void bench_formatters() {
-    // basic patterns(single flag)
-    std::string all_flags = "+vtPnlLaAbBcCYDmdHIMSefFprRTXzEisg@luioO%";
-    std::vector<std::string> basic_patterns;
-    for (auto &flag : all_flags) {
-        auto pattern = std::string("%") + flag;
-        benchmark::RegisterBenchmark(pattern.c_str(), &bench_formatter, pattern);
-
-        //        pattern = std::string("%16") + flag;
-        //        benchmark::RegisterBenchmark(pattern.c_str(), &bench_formatter, pattern);
-        //
-        //        // bench center padding
-        //        pattern = std::string("%=16") + flag;
-        //        benchmark::RegisterBenchmark(pattern.c_str(), &bench_formatter, pattern);
-    }
-
-    // complex patterns
-    std::vector<std::string> patterns = {
-        "[%D %X] [%l] [%n] %v",
-        "[%Y-%m-%d %H:%M:%S.%e] [%l] [%n] %v",
-        "[%Y-%m-%d %H:%M:%S.%e] [%l] [%n] [%t] %v",
-    };
-    for (auto &pattern : patterns) {
-        benchmark::RegisterBenchmark(pattern.c_str(), &bench_formatter, pattern)->Iterations(2500000);
-    }
-}
-
-int main(int argc, char *argv[]) {
-    spdlog::set_pattern("[%^%l%$] %v");
-    if (argc != 2) {
-        spdlog::error("Usage: {} <pattern> (or \"all\" to bench all)", argv[0]);
-        exit(1);
-    }
-
-    std::string pattern = argv[1];
-    if (pattern == "all") {
-        bench_formatters();
-    } else {
-        benchmark::RegisterBenchmark(pattern.c_str(), &bench_formatter, pattern);
-    }
-    benchmark::Initialize(&argc, argv);
-    benchmark::RunSpecifiedBenchmarks();
-}

bench/g2log-async.cpp

@@ -0,0 +1,61 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#include <atomic>
+#include <chrono>
+#include <iostream>
+#include <thread>
+#include <vector>
+
+#include "g2log.h"
+#include "g2logworker.h"
+
+using namespace std;
+template<typename T>
+std::string format(const T &value);
+
+int main(int argc, char *argv[])
+{
+    using namespace std::chrono;
+    using clock = steady_clock;
+    int thread_count = 10;
+
+    if (argc > 1)
+        thread_count = atoi(argv[1]);
+    int howmany = 1000000;
+
+    g2LogWorker g2log(argv[0], "logs");
+    g2::initializeLogging(&g2log);
+
+    std::atomic<int> msg_counter{0};
+    vector<thread> threads;
+    auto start = clock::now();
+    for (int t = 0; t < thread_count; ++t)
+    {
+        threads.push_back(std::thread([&]() {
+            while (true)
+            {
+                int counter = ++msg_counter;
+                if (counter > howmany)
+                    break;
+                LOG(INFO) << "g2log message #" << counter << ": This is some text for your pleasure";
+            }
+        }));
+    }
+
+    for (auto &t : threads)
+    {
+        t.join();
+    }
+
+    duration<float> delta = clock::now() - start;
+    float deltaf = delta.count();
+    auto rate = howmany / deltaf;
+
+    cout << "Total: " << howmany << std::endl;
+    cout << "Threads: " << thread_count << std::endl;
+    std::cout << "Delta = " << deltaf << " seconds" << std::endl;
+    std::cout << "Rate = " << rate << "/sec" << std::endl;
+}

bench/g3log-async.cpp

@@ -0,0 +1,63 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#include <atomic>
+#include <chrono>
+#include <iostream>
+#include <thread>
+#include <vector>
+
+#include "g3log/g3log.hpp"
+#include "g3log/logworker.hpp"
+
+using namespace std;
+template<typename T>
+std::string format(const T &value);
+
+int main(int argc, char *argv[])
+{
+    using namespace std::chrono;
+    using clock = steady_clock;
+    int thread_count = 10;
+
+    if (argc > 1)
+        thread_count = atoi(argv[1]);
+
+    int howmany = 1000000;
+
+    auto worker = g3::LogWorker::createLogWorker();
+    auto handle = worker->addDefaultLogger(argv[0], "logs");
+    g3::initializeLogging(worker.get());
+
+    std::atomic<int> msg_counter{0};
+    vector<thread> threads;
+    auto start = clock::now();
+    for (int t = 0; t < thread_count; ++t)
+    {
+        threads.push_back(std::thread([&]() {
+            while (true)
+            {
+                int counter = ++msg_counter;
+                if (counter > howmany)
+                    break;
+                LOG(INFO) << "g3log message #" << counter << ": This is some text for your pleasure";
+            }
+        }));
+    }
+
+    for (auto &t : threads)
+    {
+        t.join();
+    }
+
+    duration<float> delta = clock::now() - start;
+    float deltaf = delta.count();
+    auto rate = howmany / deltaf;
+
+    cout << "Total: " << howmany << std::endl;
+    cout << "Threads: " << thread_count << std::endl;
+    std::cout << "Delta = " << deltaf << " seconds" << std::endl;
+    std::cout << "Rate = " << rate << "/sec" << std::endl;
+}

bench/glog-bench-mt.cpp

@@ -0,0 +1,63 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#include <atomic>
+#include <chrono>
+#include <iostream>
+#include <thread>
+#include <vector>
+
+#include "glog/logging.h"
+
+using namespace std;
+
+int main(int argc, char *argv[])
+{
+    using namespace std::chrono;
+    using clock = steady_clock;
+
+    int thread_count = 10;
+    if (argc > 1)
+        thread_count = atoi(argv[1]);
+
+    int howmany = 1000000;
+
+    FLAGS_logtostderr = 0;
+    FLAGS_log_dir = "logs";
+    google::InitGoogleLogging(argv[0]);
+
+    std::atomic<int> msg_counter{0};
+    vector<thread> threads;
+
+    auto start = clock::now();
+    for (int t = 0; t < thread_count; ++t)
+    {
+        threads.push_back(std::thread([&]() {
+            while (true)
+            {
+                int counter = ++msg_counter;
+                if (counter > howmany)
+                    break;
+                LOG(INFO) << "glog message #" << counter << ": This is some text for your pleasure";
+            }
+        }));
+    }
+
+    for (auto &t : threads)
+    {
+        t.join();
+    }
+
+    duration<float> delta = clock::now() - start;
+    float deltaf = delta.count();
+    auto rate = howmany / deltaf;
+
+    std::cout << "Total: " << howmany << std::endl;
+    std::cout << "Threads: " << thread_count << std::endl;
+    std::cout << "Delta = " << deltaf << " seconds" << std::endl;
+    std::cout << "Rate = " << rate << "/sec" << std::endl;
+
+    return 0;
+}

bench/glog-bench.cpp

@@ -0,0 +1,34 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#include <chrono>
+#include <iostream>
+
+#include "glog/logging.h"
+
+int main(int, char *argv[])
+{
+    using namespace std::chrono;
+    using clock = steady_clock;
+
+    int howmany = 1000000;
+
+    FLAGS_logtostderr = 0;
+    FLAGS_log_dir = "logs";
+    google::InitGoogleLogging(argv[0]);
+    auto start = clock::now();
+    for (int i = 0; i < howmany; ++i)
+        LOG(INFO) << "glog message #" << i << ": This is some text for your pleasure";
+
+    duration<float> delta = clock::now() - start;
+    float deltaf = delta.count();
+    auto rate = howmany / deltaf;
+
+    std::cout << "Total: " << howmany << std::endl;
+    std::cout << "Delta = " << deltaf << " seconds" << std::endl;
+    std::cout << "Rate = " << rate << "/sec" << std::endl;
+
+    return 0;
+}

bench/latency.cpp

@@ -1,165 +0,0 @@
-//
-// Copyright(c) 2018 Gabi Melman.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-//
-
-//
-// latency.cpp : spdlog latency benchmarks
-//
-
-#include "benchmark/benchmark.h"
-#include "spdlog/sinks/async_sink.h"
-#include "spdlog/sinks/basic_file_sink.h"
-#include "spdlog/sinks/daily_file_sink.h"
-#include "spdlog/sinks/null_sink.h"
-#include "spdlog/sinks/rotating_file_sink.h"
-#include "spdlog/spdlog.h"
-
-using namespace spdlog::sinks;
-void bench_c_string(benchmark::State &state, std::shared_ptr<spdlog::logger> logger) {
-    const char *msg =
-        "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vestibulum pharetra metus cursus "
-        "lacus placerat congue. Nulla egestas, mauris a tincidunt tempus, enim lectus volutpat mi, "
-        "eu consequat sem "
-        "libero nec massa. In dapibus ipsum a diam rhoncus gravida. Etiam non dapibus eros. Donec "
-        "fringilla dui sed "
-        "augue pretium, nec scelerisque est maximus. Nullam convallis, sem nec blandit maximus, "
-        "nisi turpis ornare "
-        "nisl, sit amet volutpat neque massa eu odio. Maecenas malesuada quam ex, posuere congue "
-        "nibh turpis duis.";
-
-    for (auto _ : state) {
-        logger->info(msg);
-    }
-}
-
-void bench_logger(benchmark::State &state, std::shared_ptr<spdlog::logger> logger) {
-    int i = 0;
-    for (auto _ : state) {
-        logger->info("Hello logger: msg number {}...............", ++i);
-    }
-}
-
-void bench_global_logger(benchmark::State &state, std::shared_ptr<spdlog::logger> logger) {
-    spdlog::set_global_logger(std::move(logger));
-    int i = 0;
-    for (auto _ : state) {
-        spdlog::info("Hello logger: msg number {}...............", ++i);
-    }
-}
-
-void bench_disabled_macro(benchmark::State &state, std::shared_ptr<spdlog::logger> logger) {
-    int i = 0;
-    benchmark::DoNotOptimize(i);       // prevent unused warnings
-    benchmark::DoNotOptimize(logger);  // prevent unused warnings
-    for (auto _ : state) {
-        SPDLOG_LOGGER_DEBUG(logger, "Hello logger: msg number {}...............", i++);
-    }
-}
-
-void bench_disabled_macro_global_logger(benchmark::State &state, std::shared_ptr<spdlog::logger> logger) {
-    spdlog::set_global_logger(std::move(logger));
-    int i = 0;
-    benchmark::DoNotOptimize(i);       // prevent unused warnings
-    benchmark::DoNotOptimize(logger);  // prevent unused warnings
-    for (auto _ : state) {
-        SPDLOG_DEBUG("Hello logger: msg number {}...............", i++);
-    }
-}
-
-#ifdef __linux__
-
-void bench_dev_null() {
-    auto dev_null_st = spdlog::create<basic_file_sink_st>("/dev/null_st", "/dev/null");
-    benchmark::RegisterBenchmark("/dev/null_st", bench_logger, std::move(dev_null_st))->UseRealTime();
-
-    auto dev_null_mt = spdlog::create<basic_file_sink_mt>("/dev/null_mt", "/dev/null");
-    benchmark::RegisterBenchmark("/dev/null_mt", bench_logger, std::move(dev_null_mt))->UseRealTime();
-}
-
-#endif  // __linux__
-
-// test spdlog::get() performance
-// for this test we create multiple null loggers and then call spdlog::get() on one of them multiple times
-// create multiple null loggers and return name of the one to test
-static std::string prepare_null_loggers() {
-    const std::string some_logger_name = "Some logger name";
-    const int null_logger_count = 9;
-    for (int i = 0; i < null_logger_count; i++) {
-        spdlog::create<null_sink_mt>(some_logger_name + std::to_string(i));
-    }
-    return some_logger_name + std::to_string(null_logger_count / 2);
-}
-
-int main(int argc, char *argv[]) {
-    using spdlog::sinks::null_sink_mt;
-    using spdlog::sinks::null_sink_st;
-
-    size_t file_size = 30 * 1024 * 1024;
-    size_t rotating_files = 5;
-    int n_threads = benchmark::CPUInfo::Get().num_cpus;
-
-    auto full_bench = argc > 1 && std::string(argv[1]) == "full";
-
-    // disabled loggers
-    auto disabled_logger = std::make_shared<spdlog::logger>("bench", std::make_shared<null_sink_mt>());
-    disabled_logger->set_level(spdlog::level::off);
-    benchmark::RegisterBenchmark("disabled-at-compile-time", bench_disabled_macro, disabled_logger);
-    benchmark::RegisterBenchmark("disabled-at-compile-time (global logger)", bench_disabled_macro_global_logger, disabled_logger);
-    benchmark::RegisterBenchmark("disabled-at-runtime", bench_logger, disabled_logger);
-    benchmark::RegisterBenchmark("disabled-at-runtime (global logger)", bench_global_logger, disabled_logger);
-
-    auto null_logger_st = std::make_shared<spdlog::logger>("bench", std::make_shared<null_sink_st>());
-    benchmark::RegisterBenchmark("null_sink_st (500_bytes c_str)", bench_c_string, std::move(null_logger_st));
-    benchmark::RegisterBenchmark("null_sink_st", bench_logger, null_logger_st);
-    benchmark::RegisterBenchmark("null_sink_st (global logger)", bench_global_logger, null_logger_st);
-
-#ifdef __linux__
-    bench_dev_null();
-#endif  // __linux__
-
-    if (full_bench) {
-        // basic_st
-        auto basic_st = spdlog::create<basic_file_sink_st>("basic_st", "latency_logs/basic_st.log", true);
-        benchmark::RegisterBenchmark("basic_st", bench_logger, std::move(basic_st))->UseRealTime();
-
-        // rotating st
-        auto rotating_st =
-            spdlog::create<rotating_file_sink_st>("rotating_st", "latency_logs/rotating_st.log", file_size, rotating_files);
-        benchmark::RegisterBenchmark("rotating_st", bench_logger, std::move(rotating_st))->UseRealTime();
-
-        // daily st
-        auto daily_st = spdlog::create<daily_file_sink_st>("daily_st", "latency_logs/daily_st.log", 0, 1);
-        benchmark::RegisterBenchmark("daily_st", bench_logger, std::move(daily_st))->UseRealTime();
-
-        //
-        // Multi threaded bench, 10 loggers using same logger concurrently
-        //
-        auto null_logger_mt = std::make_shared<spdlog::logger>("bench", std::make_shared<null_sink_mt>());
-        benchmark::RegisterBenchmark("null_sink_mt", bench_logger, null_logger_mt)->Threads(n_threads)->UseRealTime();
-
-        // basic_mt
-        auto basic_mt = spdlog::create<basic_file_sink_mt>("basic_mt", "latency_logs/basic_mt.log", true);
-        benchmark::RegisterBenchmark("basic_mt", bench_logger, std::move(basic_mt))->Threads(n_threads)->UseRealTime();
-
-        // rotating mt
-        auto rotating_mt =
-            spdlog::create<rotating_file_sink_mt>("rotating_mt", "latency_logs/rotating_mt.log", file_size, rotating_files);
-        benchmark::RegisterBenchmark("rotating_mt", bench_logger, std::move(rotating_mt))->Threads(n_threads)->UseRealTime();
-
-        // daily mt
-        auto daily_mt = spdlog::create<daily_file_sink_mt>("daily_mt", "latency_logs/daily_mt.log", 0, 1);
-        benchmark::RegisterBenchmark("daily_mt", bench_logger, std::move(daily_mt))->Threads(n_threads)->UseRealTime();
-    }
-    using spdlog::sinks::async_sink;
-    async_sink::config config;
-    config.queue_size = 3 * 1024 * 1024;
-    ;
-    config.sinks.push_back(std::make_shared<null_sink_st>());
-    config.policy = async_sink::overflow_policy::overrun_oldest;
-    auto async_logger = std::make_shared<spdlog::logger>("async_logger", std::make_shared<async_sink>(config));
-    benchmark::RegisterBenchmark("async_logger", bench_logger, async_logger)->Threads(n_threads)->UseRealTime();
-
-    benchmark::Initialize(&argc, argv);
-    benchmark::RunSpecifiedBenchmarks();
-}

bench/latency/Makefile

@@ -0,0 +1,32 @@
+CXX	?= g++
+CXXFLAGS	= -march=native -Wall -std=c++11 -pthread 
+CXX_RELEASE_FLAGS = -O2 -DNDEBUG
+
+
+binaries=spdlog-latency g3log-latency g3log-crush
+
+all: $(binaries)
+
+spdlog-latency: spdlog-latency.cpp
+	$(CXX) spdlog-latency.cpp -o spdlog-latency $(CXXFLAGS) $(CXX_RELEASE_FLAGS) -I../../include
+
+
+
+g3log-latency: g3log-latency.cpp
+	$(CXX) g3log-latency.cpp -o g3log-latency $(CXXFLAGS) $(CXX_RELEASE_FLAGS) -I../../../g3log/src -L. -lg3logger 
+		
+		
+g3log-crush: g3log-crush.cpp
+	$(CXX) g3log-crush.cpp -o g3log-crush $(CXXFLAGS) $(CXX_RELEASE_FLAGS) -I../../../g3log/src -L. -lg3logger 
+		
+	
+.PHONY: clean
+
+clean:
+	rm -f *.o  *.log $(binaries)
+
+
+rebuild: clean all
+
+
+

bench/latency/compare.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+echo "running spdlog and g3log tests 10 time with ${1:-10} threads each (total 1,000,000 entries).."
+rm -f *.log
+for i in {1..10}
+
+do
+   echo
+   sleep 0.5
+   ./spdlog-latency ${1:-10} 2>/dev/null || exit
+   sleep 0.5
+   ./g3log-latency ${1:-10} 2>/dev/null || exit
+
+done

bench/latency/g3log-crush.cpp

@@ -0,0 +1,34 @@
+#include <iostream>
+
+#include <g3log/g3log.hpp>
+#include <g3log/logworker.hpp>
+
+void CrusherLoop()
+{
+    size_t counter = 0;
+    while (true)
+    {
+        LOGF(INFO, "Some text to crush you machine. thread:");
+        if (++counter % 1000000 == 0)
+        {
+            std::cout << "Wrote " << counter << " entries" << std::endl;
+        }
+    }
+}
+
+int main(int argc, char **argv)
+{
+    std::cout << "WARNING: This test will exaust all your machine memory and will crush it!" << std::endl;
+    std::cout << "Are you sure you want to continue ? " << std::endl;
+    char c;
+    std::cin >> c;
+    if (toupper(c) != 'Y')
+        return 0;
+
+    auto worker = g3::LogWorker::createLogWorker();
+    auto handle = worker->addDefaultLogger(argv[0], "g3log.txt");
+    g3::initializeLogging(worker.get());
+    CrusherLoop();
+
+    return 0;
+}

bench/latency/g3log-latency.cpp

@@ -0,0 +1,118 @@
+#include "utils.h"
+#include <algorithm>
+#include <atomic>
+#include <chrono>
+#include <cstdio>
+#include <fstream>
+#include <functional>
+#include <g3log/g3log.hpp>
+#include <g3log/logworker.hpp>
+#include <iomanip>
+#include <iostream>
+#include <map>
+#include <numeric>
+#include <sstream>
+#include <thread>
+#include <vector>
+
+namespace {
+const uint64_t g_iterations = 1000000;
+
+std::atomic<size_t> g_counter = {0};
+
+void MeasurePeakDuringLogWrites(const size_t id, std::vector<uint64_t> &result)
+{
+
+    while (true)
+    {
+        const size_t value_now = ++g_counter;
+        if (value_now > g_iterations)
+        {
+            return;
+        }
+
+        auto start_time = std::chrono::high_resolution_clock::now();
+        LOGF(INFO, "Some text to log for thread: %ld", id);
+        auto stop_time = std::chrono::high_resolution_clock::now();
+        uint64_t time_us = std::chrono::duration_cast<std::chrono::microseconds>(stop_time - start_time).count();
+        result.push_back(time_us);
+    }
+}
+
+void PrintResults(const std::map<size_t, std::vector<uint64_t>> &threads_result, size_t total_us)
+{
+
+    std::vector<uint64_t> all_measurements;
+    all_measurements.reserve(g_iterations);
+    for (auto &t_result : threads_result)
+    {
+        all_measurements.insert(all_measurements.end(), t_result.second.begin(), t_result.second.end());
+    }
+
+    // calc worst latenct
+    auto worst = *std::max_element(all_measurements.begin(), all_measurements.end());
+
+    // calc avg
+    auto total = accumulate(begin(all_measurements), end(all_measurements), 0, std::plus<uint64_t>());
+    auto avg = double(total) / all_measurements.size();
+
+    std::cout << "[g3log]  worst: " << std::setw(10) << std::right << worst << "\tAvg: " << avg << "\tTotal: " << utils::format(total_us)
+              << " us" << std::endl;
+}
+} // namespace
+
+// The purpose of this test is NOT to see how fast
+// each thread can possibly write. It is to see what
+// the worst latency is for writing a log entry
+//
+// In the test 1 million log entries will be written
+// an atomic counter is used to give each thread what
+// it is to write next. The overhead of atomic
+// synchronization between the threads are not counted in the worst case latency
+int main(int argc, char **argv)
+{
+    size_t number_of_threads{0};
+    if (argc == 2)
+    {
+        number_of_threads = atoi(argv[1]);
+    }
+    if (argc != 2 || number_of_threads == 0)
+    {
+        std::cerr << "USAGE is: " << argv[0] << " number_threads" << std::endl;
+        return 1;
+    }
+
+    std::vector<std::thread> threads(number_of_threads);
+    std::map<size_t, std::vector<uint64_t>> threads_result;
+
+    for (size_t idx = 0; idx < number_of_threads; ++idx)
+    {
+        // reserve to 1 million for all the result
+        // it's a test so  let's not care about the wasted space
+        threads_result[idx].reserve(g_iterations);
+    }
+
+    const std::string g_path = "./";
+    const std::string g_prefix_log_name = "g3log-performance-";
+    const std::string g_measurement_dump = g_path + g_prefix_log_name + "_RESULT.txt";
+
+    auto worker = g3::LogWorker::createLogWorker();
+    auto handle = worker->addDefaultLogger(argv[0], "g3log.txt");
+    g3::initializeLogging(worker.get());
+
+    auto start_time_application_total = std::chrono::high_resolution_clock::now();
+    for (uint64_t idx = 0; idx < number_of_threads; ++idx)
+    {
+        threads[idx] = std::thread(MeasurePeakDuringLogWrites, idx, std::ref(threads_result[idx]));
+    }
+    for (size_t idx = 0; idx < number_of_threads; ++idx)
+    {
+        threads[idx].join();
+    }
+    auto stop_time_application_total = std::chrono::high_resolution_clock::now();
+
+    uint64_t total_time_in_us =
+        std::chrono::duration_cast<std::chrono::microseconds>(stop_time_application_total - start_time_application_total).count();
+    PrintResults(threads_result, total_time_in_us);
+    return 0;
+}

bench/latency/spdlog-latency.cpp

@@ -0,0 +1,119 @@
+
+#include "utils.h"
+#include <algorithm>
+#include <atomic>
+#include <chrono>
+#include <cstdio>
+#include <functional>
+#include <iostream>
+#include <map>
+#include <numeric>
+#include <thread>
+#include <vector>
+
+#include "spdlog/spdlog.h"
+
+namespace spd = spdlog;
+
+namespace {
+const uint64_t g_iterations = 1000000;
+
+std::atomic<size_t> g_counter = {0};
+
+void MeasurePeakDuringLogWrites(const size_t id, std::vector<uint64_t> &result)
+{
+    auto logger = spd::get("file_logger");
+    while (true)
+    {
+        const size_t value_now = ++g_counter;
+        if (value_now > g_iterations)
+        {
+            return;
+        }
+
+        auto start_time = std::chrono::high_resolution_clock::now();
+        logger->info("Some text to log for thread: [somemore text...............................] {}", id);
+        auto stop_time = std::chrono::high_resolution_clock::now();
+        uint64_t time_us = std::chrono::duration_cast<std::chrono::microseconds>(stop_time - start_time).count();
+        result.push_back(time_us);
+    }
+}
+
+void PrintResults(const std::map<size_t, std::vector<uint64_t>> &threads_result, size_t total_us)
+{
+
+    std::vector<uint64_t> all_measurements;
+    all_measurements.reserve(g_iterations);
+    for (auto &t_result : threads_result)
+    {
+        all_measurements.insert(all_measurements.end(), t_result.second.begin(), t_result.second.end());
+    }
+
+    // calc worst latenct
+    auto worst = *std::max_element(all_measurements.begin(), all_measurements.end());
+
+    // calc avg
+    auto total = accumulate(begin(all_measurements), end(all_measurements), 0, std::plus<uint64_t>());
+    auto avg = double(total) / all_measurements.size();
+
+    std::cout << "[spdlog] worst: " << std::setw(10) << std::right << worst << "\tAvg: " << avg << "\tTotal: " << utils::format(total_us)
+              << " us" << std::endl;
+}
+} // namespace
+
+// The purpose of this test is NOT to see how fast
+// each thread can possibly write. It is to see what
+// the worst latency is for writing a log entry
+//
+// In the test 1 million log entries will be written
+// an atomic counter is used to give each thread what
+// it is to write next. The overhead of atomic
+// synchronization between the threads are not counted in the worst case latency
+int main(int argc, char **argv)
+{
+    size_t number_of_threads{0};
+    if (argc == 2)
+    {
+        number_of_threads = atoi(argv[1]);
+    }
+    if (argc != 2 || number_of_threads == 0)
+    {
+        std::cerr << "usage: " << argv[0] << " number_threads" << std::endl;
+        return 1;
+    }
+
+    std::vector<std::thread> threads(number_of_threads);
+    std::map<size_t, std::vector<uint64_t>> threads_result;
+
+    for (size_t idx = 0; idx < number_of_threads; ++idx)
+    {
+        // reserve to 1 million for all the result
+        // it's a test so  let's not care about the wasted space
+        threads_result[idx].reserve(g_iterations);
+    }
+
+    int queue_size = 1048576; // 2 ^ 20
+    spdlog::set_async_mode(queue_size);
+    auto logger = spdlog::create<spd::sinks::simple_file_sink_mt>("file_logger", "spdlog.log", true);
+
+    // force flush on every call to compare with g3log
+    auto s = (spd::sinks::simple_file_sink_mt *)logger->sinks()[0].get();
+    s->set_force_flush(true);
+
+    auto start_time_application_total = std::chrono::high_resolution_clock::now();
+    for (uint64_t idx = 0; idx < number_of_threads; ++idx)
+    {
+        threads[idx] = std::thread(MeasurePeakDuringLogWrites, idx, std::ref(threads_result[idx]));
+    }
+    for (size_t idx = 0; idx < number_of_threads; ++idx)
+    {
+        threads[idx].join();
+    }
+    auto stop_time_application_total = std::chrono::high_resolution_clock::now();
+
+    uint64_t total_time_in_us =
+        std::chrono::duration_cast<std::chrono::microseconds>(stop_time_application_total - start_time_application_total).count();
+
+    PrintResults(threads_result, total_time_in_us);
+    return 0;
+}

bench/latency/utils.h

@@ -0,0 +1,34 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#pragma once
+
+#include <iomanip>
+#include <locale>
+#include <sstream>
+
+namespace utils {
+
+template<typename T>
+inline std::string format(const T &value)
+{
+    static std::locale loc("");
+    std::stringstream ss;
+    ss.imbue(loc);
+    ss << value;
+    return ss.str();
+}
+
+template<>
+inline std::string format(const double &value)
+{
+    static std::locale loc("");
+    std::stringstream ss;
+    ss.imbue(loc);
+    ss << std::fixed << std::setprecision(1) << value;
+    return ss.str();
+}
+
+} // namespace utils

bench/log4cplus-bench-mt.cpp

@@ -0,0 +1,78 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#include <atomic>
+#include <chrono>
+#include <iostream>
+#include <memory>
+#include <thread>
+#include <vector>
+
+#include "log4cplus/fileappender.h"
+#include "log4cplus/helpers/loglog.h"
+#include "log4cplus/helpers/property.h"
+#include "log4cplus/layout.h"
+#include "log4cplus/logger.h"
+#include "log4cplus/loggingmacros.h"
+#include "log4cplus/ndc.h"
+
+using namespace log4cplus;
+
+int main(int argc, char *argv[])
+{
+    using namespace std::chrono;
+    using clock = steady_clock;
+
+    int thread_count = 10;
+    if (argc > 1)
+        thread_count = std::atoi(argv[1]);
+
+    int howmany = 1000000;
+
+    log4cplus::initialize();
+    SharedFileAppenderPtr append(new FileAppender(LOG4CPLUS_TEXT("logs/log4cplus-bench-mt.log"), std::ios_base::trunc, true, true));
+    append->setName(LOG4CPLUS_TEXT("File"));
+
+    log4cplus::tstring pattern = LOG4CPLUS_TEXT("%d{%Y-%m-%d %H:%M:%S.%Q}: %p - %m %n");
+    append->setLayout(std::auto_ptr<Layout>(new PatternLayout(pattern)));
+    append->getloc();
+    Logger::getRoot().addAppender(SharedAppenderPtr(append.get()));
+
+    Logger root = Logger::getRoot();
+
+    std::atomic<int> msg_counter{0};
+    std::vector<std::thread> threads;
+
+    auto start = clock::now();
+    for (int t = 0; t < thread_count; ++t)
+    {
+        threads.push_back(std::thread([&]() {
+            while (true)
+            {
+                int counter = ++msg_counter;
+                if (counter > howmany)
+                    break;
+                LOG4CPLUS_INFO(root, "log4cplus message #" << counter << ": This is some text for your pleasure");
+            }
+        }));
+    }
+
+    for (auto &t : threads)
+    {
+        t.join();
+    }
+
+    duration<float> delta = clock::now() - start;
+    float deltaf = delta.count();
+    auto rate = howmany / deltaf;
+
+    std::cout << "Total: " << howmany << std::endl;
+    std::cout << "Threads: " << thread_count << std::endl;
+    std::cout << "Delta = " << deltaf << " seconds" << std::endl;
+    std::cout << "Rate = " << rate << "/sec" << std::endl;
+
+    log4cplus::Logger::shutdown();
+    return 0;
+}

bench/log4cplus-bench.cpp

@@ -0,0 +1,52 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#include <chrono>
+#include <iostream>
+#include <memory>
+
+#include "log4cplus/fileappender.h"
+#include "log4cplus/helpers/loglog.h"
+#include "log4cplus/helpers/property.h"
+#include "log4cplus/layout.h"
+#include "log4cplus/logger.h"
+#include "log4cplus/loggingmacros.h"
+#include "log4cplus/ndc.h"
+
+using namespace log4cplus;
+
+int main(int, char *[])
+{
+    using namespace std::chrono;
+    using clock = steady_clock;
+
+    int howmany = 1000000;
+
+    log4cplus::initialize();
+    SharedFileAppenderPtr append(new FileAppender(LOG4CPLUS_TEXT("logs/log4cplus-bench.log"), std::ios_base::trunc, true, true));
+    append->setName(LOG4CPLUS_TEXT("File"));
+
+    log4cplus::tstring pattern = LOG4CPLUS_TEXT("%d{%Y-%m-%d %H:%M:%S.%Q}: %p - %m %n");
+    append->setLayout(std::auto_ptr<Layout>(new PatternLayout(pattern)));
+    append->getloc();
+    Logger::getRoot().addAppender(SharedAppenderPtr(append.get()));
+
+    Logger root = Logger::getRoot();
+
+    auto start = clock::now();
+    for (int i = 0; i < howmany; ++i)
+        LOG4CPLUS_INFO(root, "log4cplus message #" << i << ": This is some text for your pleasure");
+
+    duration<float> delta = clock::now() - start;
+    float deltaf = delta.count();
+    auto rate = howmany / deltaf;
+
+    std::cout << "Total: " << howmany << std::endl;
+    std::cout << "Delta = " << deltaf << " seconds" << std::endl;
+    std::cout << "Rate = " << rate << "/sec" << std::endl;
+
+    log4cplus::Logger::shutdown();
+    return 0;
+}

bench/log4cpp-bench-mt.cpp

@@ -0,0 +1,74 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#include <atomic>
+#include <chrono>
+#include <iostream>
+#include <memory>
+#include <thread>
+#include <vector>
+
+#include "log4cpp/Appender.hh"
+#include "log4cpp/BasicLayout.hh"
+#include "log4cpp/Category.hh"
+#include "log4cpp/FileAppender.hh"
+#include "log4cpp/Layout.hh"
+#include "log4cpp/PatternLayout.hh"
+#include "log4cpp/Priority.hh"
+
+int main(int argc, char *argv[])
+{
+    using namespace std::chrono;
+    using clock = steady_clock;
+
+    int thread_count = 10;
+    if (argc > 1)
+        thread_count = std::atoi(argv[1]);
+
+    int howmany = 1000000;
+
+    log4cpp::Appender *appender = new log4cpp::FileAppender("default", "logs/log4cpp-bench-mt.log");
+    log4cpp::PatternLayout *layout = new log4cpp::PatternLayout();
+    layout->setConversionPattern("%d{%Y-%m-%d %H:%M:%S.%l}: %p - %m %n");
+    appender->setLayout(layout);
+
+    log4cpp::Category &root = log4cpp::Category::getRoot();
+    root.addAppender(appender);
+    root.setPriority(log4cpp::Priority::INFO);
+
+    std::atomic<int> msg_counter{0};
+    std::vector<std::thread> threads;
+
+    auto start = clock::now();
+    for (int t = 0; t < thread_count; ++t)
+    {
+        threads.push_back(std::thread([&]() {
+            while (true)
+            {
+                int counter = ++msg_counter;
+                if (counter > howmany)
+                    break;
+                root << log4cpp::Priority::INFO << "log4cpp message #" << counter << ": This is some text for your pleasure";
+            }
+        }));
+    }
+
+    for (auto &t : threads)
+    {
+        t.join();
+    }
+
+    duration<float> delta = clock::now() - start;
+    float deltaf = delta.count();
+    auto rate = howmany / deltaf;
+
+    std::cout << "Total: " << howmany << std::endl;
+    std::cout << "Threads: " << thread_count << std::endl;
+    std::cout << "Delta = " << deltaf << " seconds" << std::endl;
+    std::cout << "Rate = " << rate << "/sec" << std::endl;
+
+    root.shutdown();
+    return 0;
+}

bench/log4cpp-bench.cpp

@@ -0,0 +1,48 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#include <chrono>
+#include <iostream>
+#include <memory>
+
+#include "log4cpp/Appender.hh"
+#include "log4cpp/BasicLayout.hh"
+#include "log4cpp/Category.hh"
+#include "log4cpp/FileAppender.hh"
+#include "log4cpp/Layout.hh"
+#include "log4cpp/PatternLayout.hh"
+#include "log4cpp/Priority.hh"
+
+int main(int, char *[])
+{
+    using namespace std::chrono;
+    using clock = steady_clock;
+
+    int howmany = 1000000;
+
+    log4cpp::Appender *appender = new log4cpp::FileAppender("default", "logs/log4cpp-bench.log");
+    log4cpp::PatternLayout *layout = new log4cpp::PatternLayout();
+    layout->setConversionPattern("%d{%Y-%m-%d %H:%M:%S.%l}: %p - %m %n");
+    appender->setLayout(layout);
+
+    log4cpp::Category &root = log4cpp::Category::getRoot();
+    root.addAppender(appender);
+    root.setPriority(log4cpp::Priority::INFO);
+
+    auto start = clock::now();
+    for (int i = 0; i < howmany; ++i)
+        root << log4cpp::Priority::INFO << "log4cpp message #" << i << ": This is some text for your pleasure";
+
+    duration<float> delta = clock::now() - start;
+    float deltaf = delta.count();
+    auto rate = howmany / deltaf;
+
+    std::cout << "Total: " << howmany << std::endl;
+    std::cout << "Delta = " << deltaf << " seconds" << std::endl;
+    std::cout << "Rate = " << rate << "/sec" << std::endl;
+
+    root.shutdown();
+    return 0;
+}

bench/logs/.gitignore

@@ -0,0 +1,4 @@
+# Ignore everything in this directory
+*
+# Except this file
+!.gitignore

bench/mem

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+if [ $# -lt 1 ]; then
+  echo "usage: $0 <program>"
+fi
+
+PROG=$1
+
+if [ ! -x "$PROG" ]; then
+  echo $PROG not found or not executable.
+  exit 1
+fi
+
+$* &
+PID=$!
+
+while `kill -0 $PID 2>/dev/null`; do
+  ps -eo size,pid,user,pcpu,command --sort -size | awk '{ line=1 ; hr=$1/1024 ; printf("%13.2f Mb ",hr); } { for ( x=4 ; x<=NF ; x++ ) { printf("%s ",$x) } print "" }' | grep -v grep | grep -v $0 | grep $PROG
+done

bench/p7-bench-mt.cpp

@@ -0,0 +1,94 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#include <atomic>
+#include <chrono>
+#include <functional>
+#include <iostream>
+#include <memory>
+#include <thread>
+#include <vector>
+
+#include "P7_Trace.h"
+
+int main(int argc, char *argv[])
+{
+    using namespace std::chrono;
+    using clock = steady_clock;
+
+    int thread_count = 10;
+    if (argc > 1)
+        thread_count = std::atoi(argv[1]);
+
+    int howmany = 1000000;
+
+    IP7_Trace::hModule module = NULL;
+
+    // create P7 client object
+    std::unique_ptr<IP7_Client, std::function<void(IP7_Client *)>> client(
+        P7_Create_Client(TM("/P7.Pool=1024 /P7.Sink=FileTxt /P7.Dir=logs/p7-bench-mt")), [&](IP7_Client *ptr) {
+            if (ptr)
+                ptr->Release();
+        });
+
+    if (!client)
+    {
+        std::cout << "Can't create IP7_Client" << std::endl;
+        return 1;
+    }
+
+    // create P7 trace object 1
+    std::unique_ptr<IP7_Trace, std::function<void(IP7_Trace *)>> trace(
+        P7_Create_Trace(client.get(), TM("Trace channel 1")), [&](IP7_Trace *ptr) {
+            if (ptr)
+                ptr->Release();
+        });
+
+    if (!trace)
+    {
+        std::cout << "Can't create IP7_Trace" << std::endl;
+        return 1;
+    }
+
+    trace->Register_Thread(TM("Application"), 0);
+    trace->Register_Module(TM("Main"), &module);
+
+    std::atomic<int> msg_counter{0};
+    std::vector<std::thread> threads;
+
+    auto start = clock::now();
+    for (int t = 0; t < thread_count; ++t)
+    {
+        threads.push_back(std::thread([&]() {
+            trace->Register_Thread(TM("Application"), t + 1);
+            while (true)
+            {
+                int counter = ++msg_counter;
+                if (counter > howmany)
+                    break;
+                trace->P7_INFO(module, TM("p7 message #%d: This is some text for your pleasure"), counter);
+            }
+            trace->Register_Thread(TM("Application"), t + 1);
+        }));
+    }
+
+    for (auto &t : threads)
+    {
+        t.join();
+    }
+
+    duration<float> delta = clock::now() - start;
+    float deltaf = delta.count();
+    auto rate = howmany / deltaf;
+
+    std::cout << "Total: " << howmany << std::endl;
+    std::cout << "Threads: " << thread_count << std::endl;
+    std::cout << "Delta = " << deltaf << " seconds" << std::endl;
+    std::cout << "Rate = " << rate << "/sec" << std::endl;
+
+    trace->Unregister_Thread(0);
+
+    return 0;
+}

bench/p7-bench.cpp

@@ -0,0 +1,66 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#include <chrono>
+#include <functional>
+#include <iostream>
+#include <memory>
+
+#include "P7_Trace.h"
+
+int main(int, char *[])
+{
+    using namespace std::chrono;
+    using clock = steady_clock;
+
+    int howmany = 1000000;
+
+    IP7_Trace::hModule module = NULL;
+
+    // create P7 client object
+    std::unique_ptr<IP7_Client, std::function<void(IP7_Client *)>> client(
+        P7_Create_Client(TM("/P7.Pool=1024 /P7.Sink=FileTxt /P7.Dir=logs/p7-bench")), [&](IP7_Client *ptr) {
+            if (ptr)
+                ptr->Release();
+        });
+
+    if (!client)
+    {
+        std::cout << "Can't create IP7_Client" << std::endl;
+        return 1;
+    }
+
+    // create P7 trace object 1
+    std::unique_ptr<IP7_Trace, std::function<void(IP7_Trace *)>> trace(
+        P7_Create_Trace(client.get(), TM("Trace channel 1")), [&](IP7_Trace *ptr) {
+            if (ptr)
+                ptr->Release();
+        });
+
+    if (!trace)
+    {
+        std::cout << "Can't create IP7_Trace" << std::endl;
+        return 1;
+    }
+
+    trace->Register_Thread(TM("Application"), 0);
+    trace->Register_Module(TM("Main"), &module);
+
+    auto start = clock::now();
+    for (int i = 0; i < howmany; ++i)
+        trace->P7_INFO(module, TM("p7 message #%d: This is some text for your pleasure"), i);
+
+    duration<float> delta = clock::now() - start;
+    float deltaf = delta.count();
+    auto rate = howmany / deltaf;
+
+    std::cout << "Total: " << howmany << std::endl;
+    std::cout << "Delta = " << deltaf << " seconds" << std::endl;
+    std::cout << "Rate = " << rate << "/sec" << std::endl;
+
+    trace->Unregister_Thread(0);
+
+    return 0;
+}

bench/plog-bench-mt.cpp

@@ -0,0 +1,61 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#include <atomic>
+#include <chrono>
+#include <iostream>
+#include <thread>
+#include <vector>
+
+#include "plog/Log.h"
+
+using namespace std;
+
+int main(int argc, char *argv[])
+{
+    using namespace std::chrono;
+    using clock = steady_clock;
+
+    int thread_count = 10;
+    if (argc > 1)
+        thread_count = atoi(argv[1]);
+
+    int howmany = 1000000;
+
+    plog::init(plog::debug, "logs/plog-bench-mt.log");
+
+    std::atomic<int> msg_counter{0};
+    vector<thread> threads;
+
+    auto start = clock::now();
+    for (int t = 0; t < thread_count; ++t)
+    {
+        threads.push_back(std::thread([&]() {
+            while (true)
+            {
+                int counter = ++msg_counter;
+                if (counter > howmany)
+                    break;
+                LOG_INFO << "plog message #" << counter << ": This is some text for your pleasure";
+            }
+        }));
+    }
+
+    for (auto &t : threads)
+    {
+        t.join();
+    }
+
+    duration<float> delta = clock::now() - start;
+    float deltaf = delta.count();
+    auto rate = howmany / deltaf;
+
+    std::cout << "Total: " << howmany << std::endl;
+    std::cout << "Threads: " << thread_count << std::endl;
+    std::cout << "Delta = " << deltaf << " seconds" << std::endl;
+    std::cout << "Rate = " << rate << "/sec" << std::endl;
+
+    return 0;
+}

bench/plog-bench.cpp

@@ -0,0 +1,34 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#include <chrono>
+#include <iostream>
+#include <memory>
+
+#include "plog/Log.h"
+
+int main(int, char *[])
+{
+    using namespace std::chrono;
+    using clock = steady_clock;
+
+    int howmany = 1000000;
+
+    plog::init(plog::debug, "logs/plog-bench.log");
+
+    auto start = clock::now();
+    for (int i = 0; i < howmany; ++i)
+        LOG_INFO << "plog message #" << i << ": This is some text for your pleasure";
+
+    duration<float> delta = clock::now() - start;
+    float deltaf = delta.count();
+    auto rate = howmany / deltaf;
+
+    std::cout << "Total: " << howmany << std::endl;
+    std::cout << "Delta = " << deltaf << " seconds" << std::endl;
+    std::cout << "Rate = " << rate << "/sec" << std::endl;
+
+    return 0;
+}

bench/spdlog-async.cpp

@@ -0,0 +1,76 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#include <atomic>
+#include <chrono>
+#include <cstdlib>
+#include <iostream>
+#include <thread>
+#include <vector>
+
+#include "spdlog/spdlog.h"
+
+using namespace std;
+
+int main(int argc, char *argv[])
+{
+    using namespace std::chrono;
+    using clock = steady_clock;
+
+    int thread_count = 10;
+    if (argc > 1)
+        thread_count = std::atoi(argv[1]);
+
+    int howmany = 1000000;
+
+    spdlog::set_async_mode(1000000);
+    auto logger = spdlog::create<spdlog::sinks::simple_file_sink_mt>("file_logger", "logs/spdlog-bench-async.log", true);
+    logger->set_pattern("[%Y-%m-%d %T.%F]: %L %t %v");
+
+    std::cout << "To stop, press <Enter>" << std::endl;
+    std::atomic<bool> run{true};
+    std::thread stoper(std::thread([&run]() {
+        std::cin.get();
+        run = false;
+    }));
+
+    while (run)
+    {
+        std::atomic<int> msg_counter{0};
+        std::vector<std::thread> threads;
+
+        auto start = clock::now();
+        for (int t = 0; t < thread_count; ++t)
+        {
+            threads.push_back(std::thread([&]() {
+                while (true)
+                {
+                    int counter = ++msg_counter;
+                    if (counter > howmany)
+                        break;
+                    logger->info("spdlog message #{}: This is some text for your pleasure", counter);
+                }
+            }));
+        }
+
+        for (auto &t : threads)
+        {
+            t.join();
+        }
+
+        duration<float> delta = clock::now() - start;
+        float deltaf = delta.count();
+        auto rate = howmany / deltaf;
+
+        std::cout << "Total: " << howmany << std::endl;
+        std::cout << "Threads: " << thread_count << std::endl;
+        std::cout << "Delta = " << std::fixed << deltaf << " seconds" << std::endl;
+        std::cout << "Rate = " << std::fixed << rate << "/sec" << std::endl;
+    } // while
+
+    stoper.join();
+
+    return 0;
+}

bench/spdlog-bench-mt.cpp

@@ -0,0 +1,63 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#include <atomic>
+#include <chrono>
+#include <cstdlib>
+#include <iostream>
+#include <thread>
+#include <vector>
+
+#include "spdlog/spdlog.h"
+
+using namespace std;
+
+int main(int argc, char *argv[])
+{
+    using namespace std::chrono;
+    using clock = steady_clock;
+
+    int thread_count = 10;
+    if (argc > 1)
+        thread_count = std::atoi(argv[1]);
+
+    int howmany = 1000000;
+
+    auto logger = spdlog::create<spdlog::sinks::simple_file_sink_mt>("file_logger", "logs/spdlog-bench-mt.log", false);
+    logger->set_pattern("[%Y-%m-%d %T.%F]: %L %t %v");
+
+    std::atomic<int> msg_counter{0};
+    std::vector<thread> threads;
+
+    auto start = clock::now();
+    for (int t = 0; t < thread_count; ++t)
+    {
+        threads.push_back(std::thread([&]() {
+            while (true)
+            {
+                int counter = ++msg_counter;
+                if (counter > howmany)
+                    break;
+                logger->info("spdlog message #{}: This is some text for your pleasure", counter);
+            }
+        }));
+    }
+
+    for (auto &t : threads)
+    {
+        t.join();
+    }
+
+    duration<float> delta = clock::now() - start;
+    float deltaf = delta.count();
+    auto rate = howmany / deltaf;
+
+    std::cout << "Total: " << howmany << std::endl;
+    std::cout << "Threads: " << thread_count << std::endl;
+    std::cout << "Delta = " << std::fixed << deltaf << " seconds" << std::endl;
+    std::cout << "Rate = " << std::fixed << rate << "/sec" << std::endl;
+
+    return 0;
+}

bench/spdlog-bench.cpp

@@ -0,0 +1,34 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#include <chrono>
+#include <iostream>
+
+#include "spdlog/spdlog.h"
+
+int main(int, char *[])
+{
+    using namespace std::chrono;
+    using clock = steady_clock;
+
+    int howmany = 1000000;
+
+    auto logger = spdlog::create<spdlog::sinks::simple_file_sink_st>("file_logger", "logs/spdlog-bench.log", false);
+    logger->set_pattern("[%Y-%m-%d %T.%F]: %L %v");
+
+    auto start = clock::now();
+    for (int i = 0; i < howmany; ++i)
+        logger->info("spdlog message #{} : This is some text for your pleasure", i);
+
+    duration<float> delta = clock::now() - start;
+    float deltaf = delta.count();
+    auto rate = howmany / deltaf;
+
+    std::cout << "Total: " << howmany << std::endl;
+    std::cout << "Delta = " << std::fixed << deltaf << " seconds" << std::endl;
+    std::cout << "Rate = " << std::fixed << rate << "/sec" << std::endl;
+
+    return 0;
+}

bench/spdlog-null-async.cpp

@@ -0,0 +1,103 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+//
+// bench.cpp : spdlog benchmarks
+//
+#include "spdlog/async_logger.h"
+#include "spdlog/sinks/null_sink.h"
+#include "spdlog/spdlog.h"
+#include "utils.h"
+#include <atomic>
+#include <cstdlib> // EXIT_FAILURE
+#include <iostream>
+#include <memory>
+#include <string>
+#include <thread>
+
+using namespace std;
+using namespace std::chrono;
+using namespace spdlog;
+using namespace spdlog::sinks;
+using namespace utils;
+
+size_t bench_as(int howmany, std::shared_ptr<spdlog::logger> log, int thread_count);
+
+int main(int argc, char *argv[])
+{
+
+    int queue_size = 1048576;
+    int howmany = 1000000;
+    int threads = 10;
+    int iters = 10;
+
+    try
+    {
+
+        if (argc > 1)
+            howmany = atoi(argv[1]);
+        if (argc > 2)
+            threads = atoi(argv[2]);
+        if (argc > 3)
+            queue_size = atoi(argv[3]);
+
+        cout << "\n*******************************************************************************\n";
+        cout << "async logging.. " << threads << " threads sharing same logger, " << format(howmany) << " messages " << endl;
+        cout << "*******************************************************************************\n";
+
+        spdlog::set_async_mode(queue_size);
+
+        size_t total_rate = 0;
+
+        for (int i = 0; i < iters; ++i)
+        {
+            // auto as = spdlog::daily_logger_st("as", "logs/daily_async");
+            auto as = spdlog::create<null_sink_st>("async(null-sink)");
+            total_rate += bench_as(howmany, as, threads);
+            spdlog::drop("async(null-sink)");
+        }
+        std::cout << endl;
+        std::cout << "Avg rate: " << format(total_rate / iters) << "/sec" << std::endl;
+    }
+    catch (std::exception &ex)
+    {
+        std::cerr << "Error: " << ex.what() << std::endl;
+        perror("Last error");
+        return EXIT_FAILURE;
+    }
+    return EXIT_SUCCESS;
+}
+
+// return rate/sec
+size_t bench_as(int howmany, std::shared_ptr<spdlog::logger> log, int thread_count)
+{
+    cout << log->name() << "...\t\t" << flush;
+    std::atomic<int> msg_counter{0};
+    vector<thread> threads;
+    auto start = system_clock::now();
+    for (int t = 0; t < thread_count; ++t)
+    {
+        threads.push_back(std::thread([&]() {
+            for (;;)
+            {
+                int counter = ++msg_counter;
+                if (counter > howmany)
+                    break;
+                log->info("Hello logger: msg number {}", counter);
+            }
+        }));
+    }
+
+    for (auto &t : threads)
+    {
+        t.join();
+    }
+
+    auto delta = system_clock::now() - start;
+    auto delta_d = duration_cast<duration<double>>(delta).count();
+    auto per_sec = size_t(howmany / delta_d);
+    cout << format(per_sec) << "/sec" << endl;
+    return per_sec;
+}

bench/utils.h

@@ -11,8 +11,9 @@
 
 namespace utils {
 
-template <typename T>
-inline std::string format(const T &value) {
+template<typename T>
+inline std::string format(const T &value)
+{
     static std::locale loc("");
     std::stringstream ss;
     ss.imbue(loc);
@@ -20,8 +21,9 @@ inline std::string format(const T &value) {
     return ss.str();
 }
 
-template <>
-inline std::string format(const double &value) {
+template<>
+inline std::string format(const double &value)
+{
     static std::locale loc("");
     std::stringstream ss;
     ss.imbue(loc);

cmake/Config.cmake.in

@@ -0,0 +1,24 @@
+# *************************************************************************/
+# * Copyright (c) 2015 Ruslan Baratov.                                    */
+# *                                                                       */
+# * Permission is hereby granted, free of charge, to any person obtaining */
+# * a copy of this software and associated documentation files (the       */
+# * "Software"), to deal in the Software without restriction, including   */
+# * without limitation the rights to use, copy, modify, merge, publish,   */
+# * distribute, sublicense, and/or sell copies of the Software, and to    */
+# * permit persons to whom the Software is furnished to do so, subject to */
+# * the following conditions:                                             */
+# *                                                                       */
+# * The above copyright notice and this permission notice shall be        */
+# * included in all copies or substantial portions of the Software.       */
+# *                                                                       */
+# * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+# * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+# * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+# * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+# * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+# * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+# * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+# *************************************************************************/
+
+include("${CMAKE_CURRENT_LIST_DIR}/@targets_export_name@.cmake")

cmake/fmtlib.cmake

@@ -1,15 +0,0 @@
-include(FetchContent)
-
-FetchContent_Declare(
-    fmt
-    DOWNLOAD_EXTRACT_TIMESTAMP FALSE
-    URL https://github.com/fmtlib/fmt/archive/refs/tags/11.1.2.tar.gz
-    URL_HASH SHA256=d8773cf062cc806d4dd4df658111f15ba7a2c9c65db5084d2491696828b1eb97)
-
-FetchContent_GetProperties(fmt)
-if(NOT fmt_POPULATED)
-    # We do not require os features of fmt
-    set(FMT_OS OFF CACHE BOOL "Disable FMT_OS" FORCE)
-    FetchContent_MakeAvailable(fmt)
-    set_target_properties(fmt PROPERTIES FOLDER "third-party")
-endif()

cmake/ide.cmake

@@ -1,18 +0,0 @@
-# ---------------------------------------------------------------------------------------
-# IDE support for headers
-# ---------------------------------------------------------------------------------------
-set(SPDLOG_HEADERS_DIR "${CMAKE_CURRENT_LIST_DIR}/../include")
-
-file(GLOB SPDLOG_TOP_HEADERS "${SPDLOG_HEADERS_DIR}/spdlog/*.h")
-file(GLOB SPDLOG_DETAILS_HEADERS "${SPDLOG_HEADERS_DIR}/spdlog/details/*.h")
-file(GLOB SPDLOG_SINKS_HEADERS "${SPDLOG_HEADERS_DIR}/spdlog/sinks/*.h")
-file(GLOB SPDLOG_FMT_HEADERS "${SPDLOG_HEADERS_DIR}/spdlog/fmt/*.h")
-file(GLOB SPDLOG_FMT_BUNDELED_HEADERS "${SPDLOG_HEADERS_DIR}/spdlog/fmt/bundled/*.h")
-set(SPDLOG_ALL_HEADERS ${SPDLOG_TOP_HEADERS} ${SPDLOG_DETAILS_HEADERS} ${SPDLOG_SINKS_HEADERS} ${SPDLOG_FMT_HEADERS}
-                       ${SPDLOG_FMT_BUNDELED_HEADERS})
-
-source_group("Header Files\\spdlog" FILES ${SPDLOG_TOP_HEADERS})
-source_group("Header Files\\spdlog\\details" FILES ${SPDLOG_DETAILS_HEADERS})
-source_group("Header Files\\spdlog\\sinks" FILES ${SPDLOG_SINKS_HEADERS})
-source_group("Header Files\\spdlog\\fmt" FILES ${SPDLOG_FMT_HEADERS})
-source_group("Header Files\\spdlog\\fmt\\bundled\\" FILES ${SPDLOG_FMT_BUNDELED_HEADERS})

cmake/spdlog.pc.in

@@ -0,0 +1,6 @@
+prefix=@CMAKE_INSTALL_PREFIX@
+includedir=${prefix}/include
+
+Name: @PROJECT_NAME@
+Description: Super fast C++ logging library. 
+Version: @PROJECT_VERSION@

cmake/spdlogCPack.cmake

@@ -1,60 +0,0 @@
-set(CPACK_GENERATOR "TGZ;ZIP" CACHE STRING "Semicolon separated list of generators")
-
-set(CPACK_INCLUDE_TOPLEVEL_DIRECTORY 0)
-set(CPACK_INSTALL_CMAKE_PROJECTS "${CMAKE_BINARY_DIR}" "${PROJECT_NAME}" ALL .)
-
-set(CPACK_PROJECT_URL "https://github.com/gabime/spdlog")
-set(CPACK_PACKAGE_VENDOR "Gabi Melman")
-set(CPACK_PACKAGE_CONTACT "Gabi Melman <gmelman1@gmail.com>")
-set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "Fast C++ logging library")
-set(CPACK_PACKAGE_VERSION_MAJOR ${PROJECT_VERSION_MAJOR})
-set(CPACK_PACKAGE_VERSION_MINOR ${PROJECT_VERSION_MINOR})
-set(CPACK_PACKAGE_VERSION_PATCH ${PROJECT_VERSION_PATCH})
-set(CPACK_PACKAGE_VERSION ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH})
-if(PROJECT_VERSION_TWEAK)
-    set(CPACK_PACKAGE_VERSION ${CPACK_PACKAGE_VERSION}.${PROJECT_VERSION_TWEAK})
-endif()
-set(CPACK_PACKAGE_RELOCATABLE ON CACHE BOOL "Build relocatable package")
-
-set(CPACK_RPM_PACKAGE_LICENSE "MIT")
-set(CPACK_RPM_PACKAGE_GROUP "Development/Libraries")
-set(CPACK_DEBIAN_PACKAGE_SECTION "libs")
-set(CPACK_RPM_PACKAGE_URL ${CPACK_PROJECT_URL})
-set(CPACK_DEBIAN_PACKAGE_HOMEPAGE ${CPACK_PROJECT_URL})
-set(CPACK_RPM_PACKAGE_DESCRIPTION "Fast C++ logging library.")
-set(CPACK_DEBIAN_PACKAGE_DESCRIPTION "FastC++ logging library.")
-
-if(CPACK_PACKAGE_NAME)
-    set(CPACK_RPM_FILE_NAME "${CPACK_PACKAGE_NAME}-${CPACK_PACKAGE_VERSION}")
-    set(CPACK_DEBIAN_FILE_NAME "${CPACK_PACKAGE_NAME}-${CPACK_PACKAGE_VERSION}")
-else()
-    set(CPACK_RPM_FILE_NAME "${PROJECT_NAME}-${CPACK_PACKAGE_VERSION}")
-    set(CPACK_DEBIAN_FILE_NAME "${PROJECT_NAME}-${CPACK_PACKAGE_VERSION}")
-    set(CPACK_RPM_PACKAGE_NAME "${PROJECT_NAME}")
-    set(CPACK_DEBIAN_PACKAGE_NAME "${PROJECT_NAME}")
-endif()
-
-if(CPACK_RPM_PACKAGE_RELEASE)
-    set(CPACK_RPM_FILE_NAME "${CPACK_RPM_FILE_NAME}-${CPACK_RPM_PACKAGE_RELEASE}")
-endif()
-if(CPACK_DEBIAN_PACKAGE_RELEASE)
-    set(CPACK_DEBIAN_FILE_NAME "${CPACK_DEBIAN_FILE_NAME}-${CPACK_DEBIAN_PACKAGE_RELEASE}")
-endif()
-
-if(CPACK_RPM_PACKAGE_ARCHITECTURE)
-    set(CPACK_RPM_FILE_NAME "${CPACK_RPM_FILE_NAME}.${CPACK_RPM_PACKAGE_ARCHITECTURE}")
-endif()
-if(CPACK_DEBIAN_PACKAGE_ARCHITECTURE)
-    set(CPACK_DEBIAN_FILE_NAME "${CPACK_DEBIAN_FILE_NAME}.${CPACK_DEBIAN_PACKAGE_ARCHITECTURE}")
-endif()
-set(CPACK_RPM_FILE_NAME "${CPACK_RPM_FILE_NAME}.rpm")
-set(CPACK_DEBIAN_FILE_NAME "${CPACK_DEBIAN_FILE_NAME}.deb")
-
-if(NOT CPACK_PACKAGE_RELOCATABLE)
-    # Depend on pkgconfig rpm to create the system pkgconfig folder
-    set(CPACK_RPM_PACKAGE_REQUIRES pkgconfig)
-    set(CPACK_RPM_EXCLUDE_FROM_AUTO_FILELIST_ADDITION
-        "${CPACK_PACKAGING_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}/pkgconfig")
-endif()
-
-include(CPack)

cmake/spdlogConfig.cmake.in

@@ -1,15 +0,0 @@
-# Copyright(c) 2019 spdlog authors
-# Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-@PACKAGE_INIT@
-
-include(CMakeFindDependencyMacro)
-
-find_package(Threads REQUIRED)
-
-find_dependency(fmt 11 CONFIG)
-
-set(config_targets_file @config_targets_file@)
-include("${CMAKE_CURRENT_LIST_DIR}/${config_targets_file}")
-
-check_required_components(spdlog)

cmake/utils.cmake

@@ -1,73 +0,0 @@
-# Get spdlog version from include/spdlog/version.h and put it in SPDLOG_VERSION
-function(spdlog_extract_version)
-    file(READ "${CMAKE_CURRENT_LIST_DIR}/include/spdlog/version.h" file_contents)
-    string(REGEX MATCH "SPDLOG_VER_MAJOR ([0-9]+)" _ "${file_contents}")
-    if(NOT CMAKE_MATCH_COUNT EQUAL 1)
-        message(FATAL_ERROR "Could not extract major version number from spdlog/version.h")
-    endif()
-    set(ver_major ${CMAKE_MATCH_1})
-
-    string(REGEX MATCH "SPDLOG_VER_MINOR ([0-9]+)" _ "${file_contents}")
-    if(NOT CMAKE_MATCH_COUNT EQUAL 1)
-        message(FATAL_ERROR "Could not extract minor version number from spdlog/version.h")
-    endif()
-
-    set(ver_minor ${CMAKE_MATCH_1})
-    string(REGEX MATCH "SPDLOG_VER_PATCH ([0-9]+)" _ "${file_contents}")
-    if(NOT CMAKE_MATCH_COUNT EQUAL 1)
-        message(FATAL_ERROR "Could not extract patch version number from spdlog/version.h")
-    endif()
-    set(ver_patch ${CMAKE_MATCH_1})
-
-    set(SPDLOG_VERSION_MAJOR ${ver_major} PARENT_SCOPE)
-    set(SPDLOG_VERSION_MINOR ${ver_minor} PARENT_SCOPE)
-    set(SPDLOG_VERSION_PATCH ${ver_patch} PARENT_SCOPE)
-    set(SPDLOG_VERSION "${ver_major}.${ver_minor}.${ver_patch}" PARENT_SCOPE)
-endfunction()
-
-# Turn on warnings on the given target
-function(spdlog_enable_warnings target_name)
-    if(SPDLOG_BUILD_WARNINGS)
-        if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
-            list(APPEND MSVC_OPTIONS "/W3")
-            if(MSVC_VERSION GREATER 1900) # Allow non fatal security warnings for msvc 2015
-                list(APPEND MSVC_OPTIONS "/WX")
-            endif()
-        endif()
-
-        target_compile_options(
-            ${target_name}
-            PRIVATE $<$<OR:$<CXX_COMPILER_ID:Clang>,$<CXX_COMPILER_ID:AppleClang>,$<CXX_COMPILER_ID:GNU>>:
-                    -Wall
-                    -Wextra
-                    -Wconversion
-                    -pedantic
-                    -Werror
-                    -Wfatal-errors>
-                    $<$<CXX_COMPILER_ID:MSVC>:${MSVC_OPTIONS}>)
-    endif()
-endfunction()
-
-# Enable address sanitizer (gcc/clang only)
-function(spdlog_enable_addr_sanitizer target_name)
-    if(NOT CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
-        message(FATAL_ERROR "Sanitizer supported only for gcc/clang")
-    endif()
-    message(STATUS "Address sanitizer enabled")
-    target_compile_options(${target_name} PRIVATE -fsanitize=address,undefined)
-    target_compile_options(${target_name} PRIVATE -fno-sanitize=signed-integer-overflow)
-    target_compile_options(${target_name} PRIVATE -fno-sanitize-recover=all)
-    target_compile_options(${target_name} PRIVATE -fno-omit-frame-pointer)
-    target_link_libraries(${target_name} PRIVATE -fsanitize=address,undefined -fuse-ld=gold)
-endfunction()
-
-# Enable thread sanitizer (gcc/clang only)
-function(spdlog_enable_thread_sanitizer target_name)
-    if(NOT CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
-        message(FATAL_ERROR "Sanitizer supported only for gcc/clang")
-    endif()
-    message(STATUS "Thread sanitizer enabled")
-    target_compile_options(${target_name} PRIVATE -fsanitize=thread)
-    target_compile_options(${target_name} PRIVATE -fno-omit-frame-pointer)
-    target_link_libraries(${target_name} PRIVATE -fsanitize=thread -fuse-ld=gold)
-endfunction()

cmake/version.rc.in

@@ -1,42 +0,0 @@
-#define APSTUDIO_READONLY_SYMBOLS
-#include <windows.h>
-#undef APSTUDIO_READONLY_SYMBOLS
-
-LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
-
-
-VS_VERSION_INFO VERSIONINFO
- FILEVERSION @SPDLOG_VERSION_MAJOR@,@SPDLOG_VERSION_MINOR@,@SPDLOG_VERSION_PATCH@,0
- PRODUCTVERSION @SPDLOG_VERSION_MAJOR@,@SPDLOG_VERSION_MINOR@,@SPDLOG_VERSION_PATCH@,0
- FILEFLAGSMASK 0x3fL
-#ifdef _DEBUG
- FILEFLAGS 0x1L
-#else
- FILEFLAGS 0x0L
-#endif
- FILEOS 0x40004L
- FILETYPE 0x2L
- FILESUBTYPE 0x0L
-BEGIN
-    BLOCK "StringFileInfo"
-    BEGIN
-        BLOCK "040904b0"
-        BEGIN
-            VALUE "FileDescription", "spdlog dll\0"
-            VALUE "FileVersion", "@SPDLOG_VERSION@.0\0"
-            VALUE "InternalName", "spdlog.dll\0"
-            VALUE "LegalCopyright", "Copyright (C) spdlog\0"
-            VALUE "ProductName", "spdlog\0"
-            VALUE "ProductVersion", "@SPDLOG_VERSION@.0\0"
-        END
-    END
-    BLOCK "VarFileInfo"
-    BEGIN
-        VALUE "Translation", 0x409, 1200
-    END
-END
-
-
-
-
-

example/CMakeLists.txt

@@ -1,12 +1,49 @@
-# Copyright(c) 2019 spdlog authors Distributed under the MIT License (http://opensource.org/licenses/MIT)
+# *************************************************************************/
+# * Copyright (c) 2015 Ruslan Baratov.                                    */
+# *                                                                       */
+# * Permission is hereby granted, free of charge, to any person obtaining */
+# * a copy of this software and associated documentation files (the       */
+# * "Software"), to deal in the Software without restriction, including   */
+# * without limitation the rights to use, copy, modify, merge, publish,   */
+# * distribute, sublicense, and/or sell copies of the Software, and to    */
+# * permit persons to whom the Software is furnished to do so, subject to */
+# * the following conditions:                                             */
+# *                                                                       */
+# * The above copyright notice and this permission notice shall be        */
+# * included in all copies or substantial portions of the Software.       */
+# *                                                                       */
+# * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+# * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+# * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+# * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+# * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+# * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+# * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+# *************************************************************************/
 
-cmake_minimum_required(VERSION 3.14)
-project(spdlog_example CXX)
+cmake_minimum_required(VERSION 3.1)
+project(SpdlogExamples CXX)
 
-if(NOT TARGET spdlog)
+if(TARGET spdlog)
+  # Part of the main project
+  add_library(spdlog::spdlog ALIAS spdlog)
+else()
   # Stand-alone build
-    find_package(spdlog 2 REQUIRED)
+  find_package(spdlog CONFIG REQUIRED)
 endif()
 
+find_package(Threads REQUIRED)
+
 add_executable(example example.cpp)
-target_link_libraries(example PRIVATE spdlog::spdlog $<$<BOOL:${MINGW}>:ws2_32>)
+target_link_libraries(example spdlog::spdlog Threads::Threads)
+
+add_executable(benchmark bench.cpp)
+target_link_libraries(benchmark spdlog::spdlog Threads::Threads)
+
+add_executable(multisink multisink.cpp)
+target_link_libraries(multisink spdlog::spdlog Threads::Threads)
+
+enable_testing()
+file(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/logs")
+add_test(NAME RunExample COMMAND example)
+add_test(NAME RunBenchmark COMMAND benchmark)

example/Makefile

@@ -0,0 +1,29 @@
+CXX	?= g++
+CXXFLAGS	=
+CXX_FLAGS = -Wall -Wshadow -Wextra -pedantic -std=c++11 -pthread -I../include
+CXX_RELEASE_FLAGS = -O3 -march=native
+CXX_DEBUG_FLAGS= -g
+
+
+all:	example bench
+debug:	example-debug bench-debug
+
+example: example.cpp
+	$(CXX) example.cpp -o example $(CXX_FLAGS) $(CXX_RELEASE_FLAGS) $(CXXFLAGS)
+
+bench: bench.cpp
+	$(CXX) bench.cpp -o bench $(CXX_FLAGS) $(CXX_RELEASE_FLAGS) $(CXXFLAGS)
+
+
+example-debug: example.cpp
+	$(CXX) example.cpp -o example-debug $(CXX_FLAGS) $(CXX_DEBUG_FLAGS) $(CXXFLAGS)
+
+bench-debug: bench.cpp
+	$(CXX) bench.cpp -o bench-debug $(CXX_FLAGS) $(CXX_DEBUG_FLAGS) $(CXXFLAGS)
+
+clean:
+	rm -f *.o logs/*.txt example example-debug bench bench-debug
+
+
+rebuild: clean all
+rebuild-debug: clean debug

example/Makefile.clang

@@ -0,0 +1,32 @@
+CXX	= clang++
+CXXFLAGS	= -march=native -Wall -Wextra -Wshadow -pedantic -std=c++11 -pthread -I../include
+CXX_RELEASE_FLAGS = -O2
+CXX_DEBUG_FLAGS= -g 
+
+
+all:	example bench
+debug: example-debug bench-debug
+
+example: example.cpp
+	$(CXX) example.cpp -o example-clang $(CXXFLAGS) $(CXX_RELEASE_FLAGS)
+
+bench: bench.cpp
+	$(CXX) bench.cpp -o bench-clang $(CXXFLAGS) $(CXX_RELEASE_FLAGS)
+	
+
+example-debug: example.cpp
+	$(CXX) example.cpp -o example-clang-debug $(CXXFLAGS) $(CXX_DEBUG_FLAGS)
+	
+bench-debug: bench.cpp
+	$(CXX) bench.cpp -o bench-clang-debug $(CXXFLAGS) $(CXX_DEBUG_FLAGS)	
+
+
+
+clean:
+	rm -f *.o logs/*.txt example-clang example-clang-debug bench-clang bench-clang-debug 
+
+
+rebuild: clean all
+rebuild-debug: clean debug
+
+

example/Makefile.mingw

@@ -0,0 +1,32 @@
+CXX	?= g++
+CXXFLAGS	=  -D_WIN32_WINNT=0x600 -march=native -Wall -Wextra -Wshadow -pedantic -std=gnu++0x -pthread -Wl,--no-as-needed  -I../include 
+CXX_RELEASE_FLAGS = -O3 
+CXX_DEBUG_FLAGS= -g 
+
+
+all:	example bench
+debug: example-debug bench-debug
+
+example: example.cpp
+	$(CXX) example.cpp -o example $(CXXFLAGS) $(CXX_RELEASE_FLAGS)
+
+bench: bench.cpp
+	$(CXX) bench.cpp -o bench $(CXXFLAGS) $(CXX_RELEASE_FLAGS)
+	
+
+example-debug: example.cpp
+	$(CXX) example.cpp -o example-debug $(CXXFLAGS) $(CXX_DEBUG_FLAGS)
+	
+bench-debug: bench.cpp
+	$(CXX) bench.cpp -o bench-debug $(CXXFLAGS) $(CXX_DEBUG_FLAGS)	
+
+
+
+clean:
+	rm -f *.o logs/*.txt example example-debug bench bench-debug 
+
+
+rebuild: clean all
+rebuild-debug: clean debug
+
+

example/bench.cpp

@@ -0,0 +1,134 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+//
+// bench.cpp : spdlog benchmarks
+//
+#include "spdlog/async_logger.h"
+#include "spdlog/sinks/file_sinks.h"
+#include "spdlog/sinks/null_sink.h"
+#include "spdlog/spdlog.h"
+#include "utils.h"
+#include <atomic>
+#include <cstdlib> // EXIT_FAILURE
+#include <iostream>
+#include <memory>
+#include <string>
+#include <thread>
+
+using namespace std;
+using namespace std::chrono;
+using namespace spdlog;
+using namespace spdlog::sinks;
+using namespace utils;
+
+void bench(int howmany, std::shared_ptr<spdlog::logger> log);
+void bench_mt(int howmany, std::shared_ptr<spdlog::logger> log, int thread_count);
+
+int main(int argc, char *argv[])
+{
+
+    int queue_size = 1048576;
+    int howmany = 1000000;
+    int threads = 10;
+    int file_size = 30 * 1024 * 1024;
+    int rotating_files = 5;
+
+    try
+    {
+
+        if (argc > 1)
+            howmany = atoi(argv[1]);
+        if (argc > 2)
+            threads = atoi(argv[2]);
+        if (argc > 3)
+            queue_size = atoi(argv[3]);
+
+        cout << "*******************************************************************************\n";
+        cout << "Single thread, " << format(howmany) << " iterations" << endl;
+        cout << "*******************************************************************************\n";
+
+        auto rotating_st = spdlog::rotating_logger_st("rotating_st", "logs/rotating_st.log", file_size, rotating_files);
+        bench(howmany, rotating_st);
+        auto daily_st = spdlog::daily_logger_st("daily_st", "logs/daily_st.log");
+        bench(howmany, daily_st);
+        bench(howmany, spdlog::create<null_sink_st>("null_st"));
+
+        cout << "\n*******************************************************************************\n";
+        cout << threads << " threads sharing same logger, " << format(howmany) << " iterations" << endl;
+        cout << "*******************************************************************************\n";
+
+        auto rotating_mt = spdlog::rotating_logger_mt("rotating_mt", "logs/rotating_mt.log", file_size, rotating_files);
+        bench_mt(howmany, rotating_mt, threads);
+
+        auto daily_mt = spdlog::daily_logger_mt("daily_mt", "logs/daily_mt.log");
+        bench_mt(howmany, daily_mt, threads);
+        bench(howmany, spdlog::create<null_sink_st>("null_mt"));
+
+        cout << "\n*******************************************************************************\n";
+        cout << "async logging.. " << threads << " threads sharing same logger, " << format(howmany) << " iterations " << endl;
+        cout << "*******************************************************************************\n";
+
+        spdlog::set_async_mode(queue_size);
+
+        for (int i = 0; i < 3; ++i)
+        {
+            auto as = spdlog::daily_logger_st("as", "logs/daily_async.log");
+            bench_mt(howmany, as, threads);
+            spdlog::drop("as");
+        }
+    }
+    catch (std::exception &ex)
+    {
+        std::cerr << "Error: " << ex.what() << std::endl;
+        perror("Last error");
+        return EXIT_FAILURE;
+    }
+    return EXIT_SUCCESS;
+}
+
+void bench(int howmany, std::shared_ptr<spdlog::logger> log)
+{
+    cout << log->name() << "...\t\t" << flush;
+    auto start = system_clock::now();
+    for (auto i = 0; i < howmany; ++i)
+    {
+        log->info("Hello logger: msg number {}", i);
+    }
+
+    auto delta = system_clock::now() - start;
+    auto delta_d = duration_cast<duration<double>>(delta).count();
+    cout << "Elapsed: " << delta_d << "\t" << format(int(howmany / delta_d)) << "/sec" << endl;
+}
+
+void bench_mt(int howmany, std::shared_ptr<spdlog::logger> log, int thread_count)
+{
+
+    cout << log->name() << "...\t\t" << flush;
+    std::atomic<int> msg_counter{0};
+    vector<thread> threads;
+    auto start = system_clock::now();
+    for (int t = 0; t < thread_count; ++t)
+    {
+        threads.push_back(std::thread([&]() {
+            for (;;)
+            {
+                int counter = ++msg_counter;
+                if (counter > howmany)
+                    break;
+                log->info("Hello logger: msg number {}", counter);
+            }
+        }));
+    }
+
+    for (auto &t : threads)
+    {
+        t.join();
+    };
+
+    auto delta = system_clock::now() - start;
+    auto delta_d = duration_cast<duration<double>>(delta).count();
+    cout << "Elapsed: " << delta_d << "\t" << format(int(howmany / delta_d)) << "/sec" << endl;
+}

example/example.cpp

@@ -1,298 +1,162 @@
 //
 // Copyright(c) 2015 Gabi Melman.
 // Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
+//
+//
 // spdlog usage example
+//
+//
 
-#include <chrono>
-#include <cstdio>
-
-void stdout_logger_example();
-void basic_example();
-void rotating_example();
-void daily_example();
-void callback_example();
-void async_example();
-void binary_example();
-void vector_example();
-void stopwatch_example();
-void trace_example();
-void multi_sink_example();
-void user_defined_example();
-void err_handler_example();
-void syslog_example();
-void udp_example();
-void custom_flags_example();
-void file_events_example();
-void replace_global_logger_example();
+#define SPDLOG_TRACE_ON
+#define SPDLOG_DEBUG_ON
 
 #include "spdlog/spdlog.h"
-#include "spdlog/version.h"
 
-using namespace spdlog::sinks;
+#include <iostream>
+#include <memory>
 
-int main(int, char *[]) {
-    spdlog::info("Welcome to spdlog version {}.{}.{} !", SPDLOG_VER_MAJOR, SPDLOG_VER_MINOR, SPDLOG_VER_PATCH);
-    spdlog::warn("Easy padding in numbers like {:08d}", 12);
-    spdlog::critical("Support for int: {0:d};  hex: {0:x};  oct: {0:o}; bin: {0:b}", 42);
-    spdlog::info("Support for floats {:03.2f}", 1.23456);
-    spdlog::info("Positional args are {1} {0}..", "too", "supported");
-    spdlog::info("{:>8} aligned, {:<8} aligned", "right", "left");
+void async_example();
+void syslog_example();
+void android_example();
+void user_defined_example();
+void err_handler_example();
 
-    // Runtime log levels
-    spdlog::set_level(spdlog::level::info);  // Set global log level to info
-    spdlog::debug("This message should not be displayed!");
-    spdlog::set_level(spdlog::level::trace);  // Set specific logger's log level
-    spdlog::debug("This message should be displayed..");
+namespace spd = spdlog;
+int main(int, char *[])
+{
+    try
+    {
+        // Console logger with color
+        auto console = spd::stdout_color_mt("console");
+        console->info("Welcome to spdlog!");
+        console->error("Some error message with arg{}..", 1);
 
-    // Customize msg format for all loggers
-    spdlog::set_pattern("[%H:%M:%S %z] [%^%L%$] [thread %t] %v");
-    spdlog::info("This an info message with custom format");
-    spdlog::set_pattern("%+");  // back to default format
-    spdlog::set_level(spdlog::level::info);
+        // Formatting examples
+        console->warn("Easy padding in numbers like {:08d}", 12);
+        console->critical("Support for int: {0:d};  hex: {0:x};  oct: {0:o}; bin: {0:b}", 42);
+        console->info("Support for floats {:03.2f}", 1.23456);
+        console->info("Positional args are {1} {0}..", "too", "supported");
+        console->info("{:<30}", "left aligned");
 
-    try {
-        stdout_logger_example();
-        basic_example();
-        rotating_example();
-        daily_example();
-        callback_example();
-        async_example();
-        binary_example();
-        vector_example();
-        multi_sink_example();
-        user_defined_example();
-        err_handler_example();
-        trace_example();
-        stopwatch_example();
-        udp_example();
-        custom_flags_example();
-        file_events_example();
-        replace_global_logger_example();
+        spd::get("console")->info("loggers can be retrieved from a global registry using the spdlog::get(logger_name) function");
 
-        // Release all spdlog resources
-        // This is optional (only mandatory if using windows + async log).
-        spdlog::shutdown();
+        // Create basic file logger (not rotated)
+        auto my_logger = spd::basic_logger_mt("basic_logger", "logs/basic-log.txt");
+        my_logger->info("Some log message");
+
+        // Create a file rotating logger with 5mb size max and 3 rotated files
+        auto rotating_logger = spd::rotating_logger_mt("some_logger_name", "logs/rotating.txt", 1048576 * 5, 3);
+        for (int i = 0; i < 10; ++i)
+        {
+            rotating_logger->info("{} * {} equals {:>10}", i, i, i * i);
         }
 
-    // Exceptions will only be thrown upon failed logger or sink construction (not during logging).
-    catch (const spdlog::spdlog_ex &ex) {
-        std::printf("Log initialization failed: %s\n", ex.what());
+        // Create a daily logger - a new file is created every day on 2:30am
+        auto daily_logger = spd::daily_logger_mt("daily_logger", "logs/daily.txt", 2, 30);
+        // trigger flush if the log severity is error or higher
+        daily_logger->flush_on(spd::level::err);
+        daily_logger->info(123.44);
+
+        // Customize msg format for all messages
+        spd::set_pattern("[%^+++%$] [%H:%M:%S %z] [thread %t] %v");
+        console->info("This an info message with custom format");
+        console->error("This an error message with custom format");
+
+        // Runtime log levels
+        spd::set_level(spd::level::info); // Set global log level to info
+        console->debug("This message should not be displayed!");
+        console->set_level(spd::level::debug); // Set specific logger's log level
+        console->debug("This message should be displayed..");
+
+        // Compile time log levels
+        // define SPDLOG_DEBUG_ON or SPDLOG_TRACE_ON
+        SPDLOG_TRACE(console, "Enabled only #ifdef SPDLOG_TRACE_ON..{} ,{}", 1, 3.23);
+        SPDLOG_DEBUG(console, "Enabled only #ifdef SPDLOG_DEBUG_ON.. {} ,{}", 1, 3.23);
+
+        // Asynchronous logging is very fast..
+        // Just call spdlog::set_async_mode(q_size) and all created loggers from now on will be asynchronous..
+        async_example();
+
+        // syslog example. linux/osx only
+        syslog_example();
+
+        // android example. compile with NDK
+        android_example();
+
+        // Log user-defined types example
+        user_defined_example();
+
+        // Change default log error handler
+        err_handler_example();
+
+        // Apply a function on all registered loggers
+        spd::apply_all([&](std::shared_ptr<spdlog::logger> l) { l->info("End of example."); });
+
+        // Release and close all loggers
+        spdlog::drop_all();
+    }
+    // Exceptions will only be thrown upon failed logger or sink construction (not during logging)
+    catch (const spd::spdlog_ex &ex)
+    {
+        std::cout << "Log init failed: " << ex.what() << std::endl;
         return 1;
     }
 }
 
-#include "spdlog/sinks/stdout_color_sinks.h"
-// or #include "spdlog/sinks/stdout_sinks.h" if no colors needed.
-void stdout_logger_example() {
-    // Create color multithreading logger.
-    auto console = spdlog::create<stdout_color_sink_mt>("console");
-    // or for stderr:
-    // auto console = spdlog::create<stderr_color_sink_mt>("console");
-}
-
-#include "spdlog/sinks/basic_file_sink.h"
-void basic_example() {
-    // Create basic file logger (not rotated).
-    auto my_logger = spdlog::create<basic_file_sink_mt>("file_logger", "logs/basic-log.txt", true);
-}
-
-#include "spdlog/sinks/rotating_file_sink.h"
-void rotating_example() {
-    // Create a file rotating logger with 5mb size max and 3 rotated files.
-    auto rotating_logger = spdlog::create<rotating_file_sink_mt>("some_logger_name", "logs/rotating.txt", 1048576 * 5, 3);
-}
-
-#include "spdlog/sinks/daily_file_sink.h"
-void daily_example() {
-    // Create a daily logger - a new file is created every day on 2:30am.
-    auto daily_logger = spdlog::create<daily_file_format_sink_mt>("daily_logger", "logs/daily.txt", 2, 30);
-}
-
-#include "spdlog/sinks/callback_sink.h"
-void callback_example() {
-    // Create the logger
-    auto logger = spdlog::create<callback_sink_mt>("custom_callback_logger", [](const spdlog::details::log_msg & /*msg*/) {
-        // do what you need to do with msg
-    });
-}
-
-#include "spdlog/sinks/async_sink.h"
-void async_example() {
-    using spdlog::sinks::async_sink;
-    auto sink = async_sink::with<basic_file_sink_mt>("logs/async_log.txt", true);
-    auto logger = std::make_shared<spdlog::logger>("async_logger", sink);
-    for (int i = 1; i < 101; ++i) {
-        logger->info("Async message #{}", i);
+void async_example()
+{
+    size_t q_size = 4096;
+    spdlog::set_async_mode(q_size);
+    auto async_file = spd::daily_logger_st("async_file_logger", "logs/async_log.txt");
+    for (int i = 0; i < 100; ++i)
+    {
+        async_file->info("Async message #{}", i);
     }
 }
 
-// Log binary data as hex.
-// Many types of std::container<char> types can be used.
-// Iterator ranges are supported too.
-// Format flags:
-// {:X} - print in uppercase.
-// {:s} - don't separate each byte with space.
-// {:p} - don't print the position on each line start.
-// {:n} - don't split the output to lines.
-
-#include "spdlog/bin_to_hex.h"
-void binary_example() {
-    std::vector<char> buf;
-    for (int i = 0; i < 80; i++) {
-        buf.push_back(static_cast<char>(i & 0xff));
-    }
-    spdlog::info("Binary example: {}", spdlog::to_hex(buf));
-    spdlog::info("Another binary example:{:n}", spdlog::to_hex(std::begin(buf), std::begin(buf) + 10));
-    // more examples:
-    // logger->info("uppercase: {:X}", spdlog::to_hex(buf));
-    // logger->info("uppercase, no delimiters: {:Xs}", spdlog::to_hex(buf));
-    // logger->info("uppercase, no delimiters, no position info: {:Xsp}", spdlog::to_hex(buf));
-    // logger->info("hexdump style: {:a}", spdlog::to_hex(buf));
-    // logger->info("hexdump style, 20 chars per line {:a}", spdlog::to_hex(buf, 20));
-}
-
-// Log a vector of numbers
-#include "fmt/ranges.h"
-void vector_example() {
-    std::vector<int> vec = {1, 2, 3};
-    spdlog::info("Vector example: {}", vec);
-}
-
-// Compile time log levels.
-// define SPDLOG_ACTIVE_LEVEL to required level (e.g. SPDLOG_LEVEL_TRACE)
-void trace_example() {
-    // trace from global logger
-    SPDLOG_TRACE("Some trace message.. {} ,{}", 1, 3.23);
-    // debug from global logger
-    SPDLOG_DEBUG("Some debug message.. {} ,{}", 1, 3.23);
-}
-
-// stopwatch example
-#include <thread>
-
-#include "spdlog/stopwatch.h"
-void stopwatch_example() {
-    spdlog::stopwatch sw;
-    std::this_thread::sleep_for(std::chrono::milliseconds(123));
-    spdlog::info("Stopwatch: {} seconds", sw);
-}
-
-#include "spdlog/sinks/udp_sink.h"
-void udp_example() {
-    udp_sink_config cfg("127.0.0.1", 11091);
-    auto my_logger = spdlog::create<udp_sink_mt>("udplog", cfg);
-    my_logger->set_level(spdlog::level::debug);
-    my_logger->info("hello world");
-}
-
-// A logger with multiple sinks (stdout and file) - each with a different format and log level.
-void multi_sink_example() {
-    auto console_sink = std::make_shared<stdout_color_sink_mt>();
-    console_sink->set_level(spdlog::level::warn);
-    console_sink->set_pattern("[multi_sink_example] [%^%l%$] %v");
-
-    auto file_sink = std::make_shared<basic_file_sink_mt>("logs/multisink.txt", true);
-    file_sink->set_level(spdlog::level::trace);
-
-    spdlog::logger logger("multi_sink", {console_sink, file_sink});
-    logger.set_level(spdlog::level::debug);
-    logger.warn("this should appear in both console and file");
-    logger.info("this message should not appear in the console, only in the file");
-}
-
-// User defined types logging
-struct my_type {
-    int i = 0;
-    explicit my_type(int i)
-        : i(i) {}
-};
-
-template <>
-struct fmt::formatter<my_type> : fmt::formatter<std::string> {
-    auto format(my_type my, format_context &ctx) const -> decltype(ctx.out()) {
-        return fmt::format_to(ctx.out(), "[my_type i={}]", my.i);
-    }
-};
-
-void user_defined_example() { spdlog::info("user defined type: {}", my_type(14)); }
-
-// Custom error handler. Will be triggered on log failure.
-void err_handler_example() {
-    // can be set globally or per logger(logger->set_error_handler(..))
-    spdlog::set_error_handler([](const std::string &msg) { printf("*** Custom log error handler: %s ***\n", msg.c_str()); });
-}
-
 // syslog example (linux/osx/freebsd)
-#ifndef _WIN32
-    #include "spdlog/sinks/syslog_sink.h"
-void syslog_example() {
+void syslog_example()
+{
+#ifdef SPDLOG_ENABLE_SYSLOG
     std::string ident = "spdlog-example";
-    auto syslog_logger = spdlog::create<syslog_sink_mt>("syslog", ident, LOG_PID);
+    auto syslog_logger = spd::syslog_logger("syslog", ident, LOG_PID);
     syslog_logger->warn("This is warning that will end up in syslog.");
-}
 #endif
+}
 
-// Android example.
+// Android example
+void android_example()
+{
 #if defined(__ANDROID__)
-    #include "spdlog/sinks/android_sink.h"
-void android_example() {
     std::string tag = "spdlog-android";
-    auto android_logger = spdlog::android_logger_mt("android", tag);
+    auto android_logger = spd::android_logger("android", tag);
     android_logger->critical("Use \"adb shell logcat\" to view this message.");
-}
 #endif
+}
 
-// Log patterns can contain custom flags.
-// this will add custom flag '%*' which will be bound to a <my_formatter_flag> instance
-#include "spdlog/pattern_formatter.h"
-class my_formatter_flag : public spdlog::custom_flag_formatter {
-public:
-    void format(const spdlog::details::log_msg &, const std::tm &, spdlog::memory_buf_t &dest) override {
-        std::string some_txt = "custom-flag";
-        dest.append(some_txt.data(), some_txt.data() + some_txt.size());
-    }
-
-    [[nodiscard]]
-    std::unique_ptr<custom_flag_formatter> clone() const override {
-        return std::make_unique<my_formatter_flag>();
+// user defined types logging by implementing operator<<
+struct my_type
+{
+    int i;
+    template<typename OStream>
+    friend OStream &operator<<(OStream &os, const my_type &c)
+    {
+        return os << "[my_type i=" << c.i << "]";
     }
 };
 
-void custom_flags_example() {
-    auto formatter = std::make_unique<spdlog::pattern_formatter>();
-    formatter->add_flag<my_formatter_flag>('*').set_pattern("[%n] [%*] [%^%l%$] %v");
-    // set the new formatter using spdlog::set_formatter(formatter) or
-    // logger->set_formatter(formatter) spdlog::set_formatter(std::move(formatter));
+#include "spdlog/fmt/ostr.h" // must be included
+void user_defined_example()
+{
+    spd::get("console")->info("user defined type: {}", my_type{14});
 }
 
-void file_events_example() {
-    // pass the spdlog::file_event_handlers to file sinks for open/close log file notifications
-    spdlog::file_event_handlers handlers;
-    handlers.before_open = [](spdlog::filename_t) { spdlog::trace("Before opening logfile"); };
-    handlers.after_open = [](spdlog::filename_t, std::FILE *fstream) {
-        spdlog::trace("After opening logfile");
-        fputs("After opening\n", fstream);
-    };
-    handlers.before_close = [](spdlog::filename_t, std::FILE *fstream) {
-        spdlog::trace("Before closing logfile");
-        fputs("Before closing\n", fstream);
-    };
-    handlers.after_close = [](spdlog::filename_t) { spdlog::trace("After closing logfile"); };
-    auto file_sink = std::make_shared<spdlog::sinks::basic_file_sink_mt>("logs/events-sample.txt", true, handlers);
-    spdlog::logger my_logger("some_logger", file_sink);
-    my_logger.trace("Some log line");
-}
-
-void replace_global_logger_example() {
-    // store the old logger so we don't break other examples.
-    auto old_logger = spdlog::global_logger();
-
-    auto new_logger = spdlog::create<basic_file_sink_mt>("new_global_logger", "logs/new-default-log.txt", true);
-    spdlog::set_global_logger(new_logger);
-    spdlog::set_level(spdlog::level::info);
-    spdlog::debug("This message should not be displayed!");
-    spdlog::set_level(spdlog::level::trace);
-    spdlog::debug("This message should be displayed..");
-    spdlog::set_global_logger(old_logger);
+//
+// custom error handler
+//
+void err_handler_example()
+{
+    // can be set globaly or per logger(logger->set_error_handler(..))
+    spdlog::set_error_handler([](const std::string &msg) { std::cerr << "my err handler: " << msg << std::endl; });
+    spd::get("console")->info("some invalid message to trigger an error {}{}{}{}", 3);
 }

example/example.sln

@@ -0,0 +1,110 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.27428.2037
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "example", "example.vcxproj", "{9E5AB93A-0CCE-4BAC-9FCB-0FC9CB5EB8D2}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "spdlog", "spdlog", "{319A0767-E66D-4DD0-8BEF-E29E891BA836}"
+	ProjectSection(SolutionItems) = preProject
+		..\include\spdlog\async_logger.h = ..\include\spdlog\async_logger.h
+		..\include\spdlog\common.h = ..\include\spdlog\common.h
+		..\include\spdlog\formatter.h = ..\include\spdlog\formatter.h
+		..\include\spdlog\logger.h = ..\include\spdlog\logger.h
+		..\include\spdlog\spdlog.h = ..\include\spdlog\spdlog.h
+		..\include\spdlog\tweakme.h = ..\include\spdlog\tweakme.h
+	EndProjectSection
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "contrib", "contrib", "{F1B153FB-7638-4F2B-B6FF-F56859D381F9}"
+	ProjectSection(SolutionItems) = preProject
+		..\include\spdlog\contrib\README.md = ..\include\spdlog\contrib\README.md
+	EndProjectSection
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "sinks", "sinks", "{9B3669F7-6D70-4699-9067-451E9298BA53}"
+	ProjectSection(SolutionItems) = preProject
+		..\include\spdlog\contrib\sinks\.gitignore = ..\include\spdlog\contrib\sinks\.gitignore
+		..\include\spdlog\contrib\sinks\step_file_sink.h = ..\include\spdlog\contrib\sinks\step_file_sink.h
+	EndProjectSection
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "details", "details", "{579FDBF1-8FCD-4F1D-99F1-540F2EFF95E0}"
+	ProjectSection(SolutionItems) = preProject
+		..\include\spdlog\details\async_log_helper.h = ..\include\spdlog\details\async_log_helper.h
+		..\include\spdlog\details\async_logger_impl.h = ..\include\spdlog\details\async_logger_impl.h
+		..\include\spdlog\details\file_helper.h = ..\include\spdlog\details\file_helper.h
+		..\include\spdlog\details\log_msg.h = ..\include\spdlog\details\log_msg.h
+		..\include\spdlog\details\logger_impl.h = ..\include\spdlog\details\logger_impl.h
+		..\include\spdlog\details\mpmc_blocking_q.h = ..\include\spdlog\details\mpmc_blocking_q.h
+		..\include\spdlog\details\null_mutex.h = ..\include\spdlog\details\null_mutex.h
+		..\include\spdlog\details\os.h = ..\include\spdlog\details\os.h
+		..\include\spdlog\details\pattern_formatter_impl.h = ..\include\spdlog\details\pattern_formatter_impl.h
+		..\include\spdlog\details\registry.h = ..\include\spdlog\details\registry.h
+		..\include\spdlog\details\spdlog_impl.h = ..\include\spdlog\details\spdlog_impl.h
+	EndProjectSection
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "fmt", "fmt", "{2034E575-9375-4AE7-B667-AF4A359F1483}"
+	ProjectSection(SolutionItems) = preProject
+		..\include\spdlog\fmt\fmt.h = ..\include\spdlog\fmt\fmt.h
+		..\include\spdlog\fmt\ostr.h = ..\include\spdlog\fmt\ostr.h
+	EndProjectSection
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "bundled", "bundled", "{16763E99-3CC7-4C46-8F79-259356FF0B37}"
+	ProjectSection(SolutionItems) = preProject
+		..\include\spdlog\fmt\bundled\format.cc = ..\include\spdlog\fmt\bundled\format.cc
+		..\include\spdlog\fmt\bundled\format.h = ..\include\spdlog\fmt\bundled\format.h
+		..\include\spdlog\fmt\bundled\LICENSE.rst = ..\include\spdlog\fmt\bundled\LICENSE.rst
+		..\include\spdlog\fmt\bundled\ostream.cc = ..\include\spdlog\fmt\bundled\ostream.cc
+		..\include\spdlog\fmt\bundled\ostream.h = ..\include\spdlog\fmt\bundled\ostream.h
+		..\include\spdlog\fmt\bundled\posix.cc = ..\include\spdlog\fmt\bundled\posix.cc
+		..\include\spdlog\fmt\bundled\posix.h = ..\include\spdlog\fmt\bundled\posix.h
+		..\include\spdlog\fmt\bundled\printf.cc = ..\include\spdlog\fmt\bundled\printf.cc
+		..\include\spdlog\fmt\bundled\printf.h = ..\include\spdlog\fmt\bundled\printf.h
+		..\include\spdlog\fmt\bundled\time.h = ..\include\spdlog\fmt\bundled\time.h
+	EndProjectSection
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "sinks", "sinks", "{13310FA4-52E7-46BA-B071-B72B1D8E44D9}"
+	ProjectSection(SolutionItems) = preProject
+		..\include\spdlog\sinks\android_sink.h = ..\include\spdlog\sinks\android_sink.h
+		..\include\spdlog\sinks\ansicolor_sink.h = ..\include\spdlog\sinks\ansicolor_sink.h
+		..\include\spdlog\sinks\base_sink.h = ..\include\spdlog\sinks\base_sink.h
+		..\include\spdlog\sinks\dist_sink.h = ..\include\spdlog\sinks\dist_sink.h
+		..\include\spdlog\sinks\file_sinks.h = ..\include\spdlog\sinks\file_sinks.h
+		..\include\spdlog\sinks\msvc_sink.h = ..\include\spdlog\sinks\msvc_sink.h
+		..\include\spdlog\sinks\null_sink.h = ..\include\spdlog\sinks\null_sink.h
+		..\include\spdlog\sinks\ostream_sink.h = ..\include\spdlog\sinks\ostream_sink.h
+		..\include\spdlog\sinks\sink.h = ..\include\spdlog\sinks\sink.h
+		..\include\spdlog\sinks\stdout_sinks.h = ..\include\spdlog\sinks\stdout_sinks.h
+		..\include\spdlog\sinks\syslog_sink.h = ..\include\spdlog\sinks\syslog_sink.h
+		..\include\spdlog\sinks\wincolor_sink.h = ..\include\spdlog\sinks\wincolor_sink.h
+		..\include\spdlog\sinks\windebug_sink.h = ..\include\spdlog\sinks\windebug_sink.h
+	EndProjectSection
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Win32 = Debug|Win32
+		Debug|x64 = Debug|x64
+		Release|Win32 = Release|Win32
+		Release|x64 = Release|x64
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{9E5AB93A-0CCE-4BAC-9FCB-0FC9CB5EB8D2}.Debug|Win32.ActiveCfg = Debug|Win32
+		{9E5AB93A-0CCE-4BAC-9FCB-0FC9CB5EB8D2}.Debug|Win32.Build.0 = Debug|Win32
+		{9E5AB93A-0CCE-4BAC-9FCB-0FC9CB5EB8D2}.Debug|x64.ActiveCfg = Debug|Win32
+		{9E5AB93A-0CCE-4BAC-9FCB-0FC9CB5EB8D2}.Release|Win32.ActiveCfg = Release|Win32
+		{9E5AB93A-0CCE-4BAC-9FCB-0FC9CB5EB8D2}.Release|Win32.Build.0 = Release|Win32
+		{9E5AB93A-0CCE-4BAC-9FCB-0FC9CB5EB8D2}.Release|x64.ActiveCfg = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(NestedProjects) = preSolution
+		{F1B153FB-7638-4F2B-B6FF-F56859D381F9} = {319A0767-E66D-4DD0-8BEF-E29E891BA836}
+		{9B3669F7-6D70-4699-9067-451E9298BA53} = {F1B153FB-7638-4F2B-B6FF-F56859D381F9}
+		{579FDBF1-8FCD-4F1D-99F1-540F2EFF95E0} = {319A0767-E66D-4DD0-8BEF-E29E891BA836}
+		{2034E575-9375-4AE7-B667-AF4A359F1483} = {319A0767-E66D-4DD0-8BEF-E29E891BA836}
+		{16763E99-3CC7-4C46-8F79-259356FF0B37} = {2034E575-9375-4AE7-B667-AF4A359F1483}
+		{13310FA4-52E7-46BA-B071-B72B1D8E44D9} = {319A0767-E66D-4DD0-8BEF-E29E891BA836}
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {8C12721F-513C-4922-B2F8-B9F2403412B4}
+	EndGlobalSection
+EndGlobal

example/example.vcxproj

@@ -0,0 +1,93 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="example.cpp" />
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{9E5AB93A-0CCE-4BAC-9FCB-0FC9CB5EB8D2}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>.</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0.16299.0</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v141</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v141</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PrecompiledHeaderFile />
+      <PrecompiledHeaderOutputFile />
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PrecompiledHeaderFile />
+      <PrecompiledHeaderOutputFile />
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <AdditionalLibraryDirectories>%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

example/jni/Android.mk

@@ -0,0 +1,15 @@
+# Setup a project
+LOCAL_PATH := $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := example
+LOCAL_SRC_FILES := example.cpp
+LOCAL_CPPFLAGS += -Wall -Wshadow -Wextra -pedantic -std=c++11 -fPIE -pie
+LOCAL_LDFLAGS +=  -fPIE -pie
+
+# Add exception support and set path for spdlog's headers
+LOCAL_CPPFLAGS += -fexceptions -I../include
+# Use android's log library
+LOCAL_LDFLAGS += -llog
+
+include $(BUILD_EXECUTABLE)

example/jni/Application.mk

@@ -0,0 +1,2 @@
+# Exceptions are used in spdlog. Link to an exception-ready C++ runtime.
+APP_STL = gnustl_static

example/jni/example.cpp

@@ -0,0 +1,157 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+//
+// spdlog usage example
+//
+//
+
+#define SPDLOG_TRACE_ON
+#define SPDLOG_DEBUG_ON
+
+#include "spdlog/spdlog.h"
+
+#include <iostream>
+#include <memory>
+
+void async_example();
+void syslog_example();
+void android_example();
+void user_defined_example();
+void err_handler_example();
+
+namespace spd = spdlog;
+int main(int, char *[])
+{
+    try
+    {
+        // Console logger with color
+        auto console = spd::stdout_color_mt("console");
+        console->info("Welcome to spdlog!");
+        console->error("Some error message with arg{}..", 1);
+
+        // Formatting examples
+        console->warn("Easy padding in numbers like {:08d}", 12);
+        console->critical("Support for int: {0:d};  hex: {0:x};  oct: {0:o}; bin: {0:b}", 42);
+        console->info("Support for floats {:03.2f}", 1.23456);
+        console->info("Positional args are {1} {0}..", "too", "supported");
+        console->info("{:<30}", "left aligned");
+
+        spd::get("console")->info("loggers can be retrieved from a global registry using the spdlog::get(logger_name) function");
+
+        // Create basic file logger (not rotated)
+        auto my_logger = spd::basic_logger_mt("basic_logger", "logs/basic-log.txt");
+        my_logger->info("Some log message");
+
+        // Create a file rotating logger with 5mb size max and 3 rotated files
+        auto rotating_logger = spd::rotating_logger_mt("some_logger_name", "logs/rotating.txt", 1048576 * 5, 3);
+        for (int i = 0; i < 10; ++i)
+            rotating_logger->info("{} * {} equals {:>10}", i, i, i * i);
+
+        // Create a daily logger - a new file is created every day on 2:30am
+        auto daily_logger = spd::daily_logger_mt("daily_logger", "logs/daily.txt", 2, 30);
+        // trigger flush if the log severity is error or higher
+        daily_logger->flush_on(spd::level::err);
+        daily_logger->info(123.44);
+
+        // Customize msg format for all messages
+        spd::set_pattern("*** [%H:%M:%S %z] [thread %t] %v ***");
+        rotating_logger->info("This is another message with custom format");
+
+        // Runtime log levels
+        spd::set_level(spd::level::info); // Set global log level to info
+        console->debug("This message should not be displayed!");
+        console->set_level(spd::level::debug); // Set specific logger's log level
+        console->debug("This message should be displayed..");
+
+        // Compile time log levels
+        // define SPDLOG_DEBUG_ON or SPDLOG_TRACE_ON
+        SPDLOG_TRACE(console, "Enabled only #ifdef SPDLOG_TRACE_ON..{} ,{}", 1, 3.23);
+        SPDLOG_DEBUG(console, "Enabled only #ifdef SPDLOG_DEBUG_ON.. {} ,{}", 1, 3.23);
+
+        // Asynchronous logging is very fast..
+        // Just call spdlog::set_async_mode(q_size) and all created loggers from now on will be asynchronous..
+        async_example();
+
+        // syslog example. linux/osx only
+        syslog_example();
+
+        // android example. compile with NDK
+        android_example();
+
+        // Log user-defined types example
+        user_defined_example();
+
+        // Change default log error handler
+        err_handler_example();
+
+        // Apply a function on all registered loggers
+        spd::apply_all([&](std::shared_ptr<spdlog::logger> l) { l->info("End of example."); });
+
+        // Release and close all loggers
+        spdlog::drop_all();
+    }
+    // Exceptions will only be thrown upon failed logger or sink construction (not during logging)
+    catch (const spd::spdlog_ex &ex)
+    {
+        std::cout << "Log init failed: " << ex.what() << std::endl;
+        return 1;
+    }
+}
+
+void async_example()
+{
+    size_t q_size = 4096; // queue size must be power of 2
+    spdlog::set_async_mode(q_size);
+    auto async_file = spd::daily_logger_st("async_file_logger", "logs/async_log.txt");
+    for (int i = 0; i < 100; ++i)
+        async_file->info("Async message #{}", i);
+}
+
+// syslog example (linux/osx/freebsd)
+void syslog_example()
+{
+#ifdef SPDLOG_ENABLE_SYSLOG
+    std::string ident = "spdlog-example";
+    auto syslog_logger = spd::syslog_logger("syslog", ident, LOG_PID);
+    syslog_logger->warn("This is warning that will end up in syslog.");
+#endif
+}
+
+// Android example
+void android_example()
+{
+#if defined(__ANDROID__)
+    std::string tag = "spdlog-android";
+    auto android_logger = spd::android_logger("android", tag);
+    android_logger->critical("Use \"adb shell logcat\" to view this message.");
+#endif
+}
+
+// user defined types logging by implementing operator<<
+struct my_type
+{
+    int i;
+    template<typename OStream>
+    friend OStream &operator<<(OStream &os, const my_type &c)
+    {
+        return os << "[my_type i=" << c.i << "]";
+    }
+};
+
+#include "spdlog/fmt/ostr.h" // must be included
+void user_defined_example()
+{
+    spd::get("console")->info("user defined type: {}", my_type{14});
+}
+
+//
+// custom error handler
+//
+void err_handler_example()
+{
+    // can be set globaly or per logger(logger->set_error_handler(..))
+    spdlog::set_error_handler([](const std::string &msg) { std::cerr << "my err handler: " << msg << std::endl; });
+    spd::get("console")->info("some invalid message to trigger an error {}{}{}{}", 3);
+}

example/logs/.gitignore

@@ -0,0 +1 @@
+*.txt

example/multisink.cpp

@@ -0,0 +1,46 @@
+#include "spdlog/spdlog.h"
+
+#include <iostream>
+#include <memory>
+
+namespace spd = spdlog;
+int main(int, char *[])
+{
+    bool enable_debug = true;
+    try
+    {
+        // This other example use a single logger with multiple sinks.
+        // This means that the same log_msg is forwarded to multiple sinks;
+        // Each sink can have it's own log level and a message will be logged.
+        std::vector<spdlog::sink_ptr> sinks;
+        sinks.push_back(std::make_shared<spdlog::sinks::stdout_sink_mt>());
+        sinks.push_back(std::make_shared<spdlog::sinks::simple_file_sink_mt>("./log_regular_file.txt"));
+        sinks.push_back(std::make_shared<spdlog::sinks::simple_file_sink_mt>("./log_debug_file.txt"));
+
+        spdlog::logger console_multisink("multisink", sinks.begin(), sinks.end());
+        console_multisink.set_level(spdlog::level::warn);
+
+        sinks[0]->set_level(spdlog::level::trace); // console. Allow everything.  Default value
+        sinks[1]->set_level(spdlog::level::trace); //  regular file. Allow everything.  Default value
+        sinks[2]->set_level(spdlog::level::off);   //  regular file. Ignore everything.
+
+        console_multisink.warn("warn: will print only on console and regular file");
+
+        if (enable_debug)
+        {
+            console_multisink.set_level(spdlog::level::debug); // level of the logger
+            sinks[1]->set_level(spdlog::level::debug);         // regular file
+            sinks[2]->set_level(spdlog::level::debug);         // debug file
+        }
+        console_multisink.debug("Debug: you should see this on console and both files");
+
+        // Release and close all loggers
+        spdlog::drop_all();
+    }
+    // Exceptions will only be thrown upon failed logger or sink construction (not during logging)
+    catch (const spd::spdlog_ex &ex)
+    {
+        std::cout << "Log init failed: " << ex.what() << std::endl;
+        return 1;
+    }
+}

example/utils.h

@@ -0,0 +1,34 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#pragma once
+
+#include <iomanip>
+#include <locale>
+#include <sstream>
+
+namespace utils {
+
+template<typename T>
+inline std::string format(const T &value)
+{
+    static std::locale loc("");
+    std::stringstream ss;
+    ss.imbue(loc);
+    ss << value;
+    return ss.str();
+}
+
+template<>
+inline std::string format(const double &value)
+{
+    static std::locale loc("");
+    std::stringstream ss;
+    ss.imbue(loc);
+    ss << std::fixed << std::setprecision(1) << value;
+    return ss.str();
+}
+
+} // namespace utils

format.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+echo -n "Running dos2unix     "
+find . -name "*\.h" -o -name "*\.cpp"|xargs -I {} sh -c "dos2unix '{}' 2>/dev/null; echo -n '.'"
+echo
+echo -n "Running clang-format "
+find . -name "*\.h" -o -name "*\.cpp"|xargs -I {} sh -c "clang-format -i {}; echo -n '.'"
+echo
+
+

include/spdlog/async_logger.h

@@ -0,0 +1,72 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#pragma once
+
+// Very fast asynchronous logger (millions of logs per second on an average desktop)
+// Uses pre allocated lockfree queue for maximum throughput even under large number of threads.
+// Creates a single back thread to pop messages from the queue and log them.
+//
+// Upon each log write the logger:
+//    1. Checks if its log level is enough to log the message
+//    2. Push a new copy of the message to a queue (or block the caller until space is available in the queue)
+//    3. will throw spdlog_ex upon log exceptions
+// Upon destruction, logs all remaining messages in the queue before destructing..
+
+#include "common.h"
+#include "logger.h"
+
+#include <chrono>
+#include <functional>
+#include <memory>
+#include <string>
+
+namespace spdlog {
+
+namespace details {
+class async_log_helper;
+}
+
+class async_logger SPDLOG_FINAL : public logger
+{
+public:
+    template<class It>
+    async_logger(const std::string &logger_name, const It &begin, const It &end, size_t queue_size,
+        const async_overflow_policy overflow_policy = async_overflow_policy::block_retry,
+        const std::function<void()> &worker_warmup_cb = nullptr,
+        const std::chrono::milliseconds &flush_interval_ms = std::chrono::milliseconds::zero(),
+        const std::function<void()> &worker_teardown_cb = nullptr);
+
+    async_logger(const std::string &logger_name, sinks_init_list sinks, size_t queue_size,
+        const async_overflow_policy overflow_policy = async_overflow_policy::block_retry,
+        const std::function<void()> &worker_warmup_cb = nullptr,
+        const std::chrono::milliseconds &flush_interval_ms = std::chrono::milliseconds::zero(),
+        const std::function<void()> &worker_teardown_cb = nullptr);
+
+    async_logger(const std::string &logger_name, sink_ptr single_sink, size_t queue_size,
+        const async_overflow_policy overflow_policy = async_overflow_policy::block_retry,
+        const std::function<void()> &worker_warmup_cb = nullptr,
+        const std::chrono::milliseconds &flush_interval_ms = std::chrono::milliseconds::zero(),
+        const std::function<void()> &worker_teardown_cb = nullptr);
+
+    // Wait for the queue to be empty, and flush synchronously
+    // Warning: this can potentially last forever as we wait it to complete
+    void flush() override;
+
+    // Error handler
+    void set_error_handler(log_err_handler) override;
+    log_err_handler error_handler() override;
+
+protected:
+    void _sink_it(details::log_msg &msg) override;
+    void _set_formatter(spdlog::formatter_ptr msg_formatter) override;
+    void _set_pattern(const std::string &pattern, pattern_time_type pattern_time) override;
+
+private:
+    std::unique_ptr<details::async_log_helper> _async_log_helper;
+};
+} // namespace spdlog
+
+#include "details/async_logger_impl.h"

include/spdlog/bin_to_hex.h

@@ -1,204 +0,0 @@
-//
-// Copyright(c) 2015 Gabi Melman.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-//
-
-#pragma once
-
-#include <cctype>
-
-#include "common.h"
-
-#if defined(__has_include)
-    #if __has_include(<version>)
-        #include <version>
-    #endif
-#endif
-
-#if __cpp_lib_span >= 202002L
-    #include <span>
-#endif
-
-//
-// Support for logging binary data as hex
-// format flags, any combination of the following:
-// {:X} - print in uppercase.
-// {:s} - don't separate each byte with space.
-// {:p} - don't print the position on each line start.
-// {:n} - don't split the output to lines.
-// {:a} - show ASCII if :n is not set
-
-//
-// Examples:
-//
-// std::vector<char> v(200, 0x0b);
-// logger->info("Some buffer {}", spdlog::to_hex(v));
-// char buf[128];
-// logger->info("Some buffer {:X}", spdlog::to_hex(std::begin(buf), std::end(buf)));
-// logger->info("Some buffer {:X}", spdlog::to_hex(std::begin(buf), std::end(buf), 16));
-
-namespace spdlog {
-namespace details {
-
-template <typename It>
-class dump_info {
-public:
-    dump_info(It range_begin, It range_end, size_t size_per_line)
-        : begin_(range_begin),
-          end_(range_end),
-          size_per_line_(size_per_line) {}
-
-    // do not use begin() and end() to avoid collision with fmt/ranges
-    It get_begin() const { return begin_; }
-    It get_end() const { return end_; }
-    [[nodiscard]] size_t size_per_line() const { return size_per_line_; }
-
-private:
-    It begin_, end_;
-    size_t size_per_line_;
-};
-}  // namespace details
-
-// create a dump_info that wraps the given container
-template <typename Container>
-inline details::dump_info<typename Container::const_iterator> to_hex(const Container &container, size_t size_per_line = 32) {
-    static_assert(sizeof(typename Container::value_type) == 1, "sizeof(Container::value_type) != 1");
-    using Iter = typename Container::const_iterator;
-    return details::dump_info<Iter>(std::begin(container), std::end(container), size_per_line);
-}
-
-#if __cpp_lib_span >= 202002L
-
-template <typename Value, size_t Extent>
-inline details::dump_info<typename std::span<Value, Extent>::iterator> to_hex(const std::span<Value, Extent> &container,
-                                                                              size_t size_per_line = 32) {
-    using Container = std::span<Value, Extent>;
-    static_assert(sizeof(typename Container::value_type) == 1, "sizeof(Container::value_type) != 1");
-    using Iter = typename Container::iterator;
-    return details::dump_info<Iter>(std::begin(container), std::end(container), size_per_line);
-}
-
-#endif
-
-// create dump_info from ranges
-template <typename It>
-inline details::dump_info<It> to_hex(const It range_begin, const It range_end, size_t size_per_line = 32) {
-    return details::dump_info<It>(range_begin, range_end, size_per_line);
-}
-
-}  // namespace spdlog
-
-template <typename T>
-struct fmt::formatter<spdlog::details::dump_info<T>, char> {
-    char delimiter = ' ';
-    bool put_newlines = true;
-    bool put_delimiters = true;
-    bool use_uppercase = false;
-    bool put_positions = true;  // position on start of each line
-    bool show_ascii = false;
-
-    // parse the format string flags
-    template <typename ParseContext>
-    constexpr auto parse(ParseContext &ctx) -> decltype(ctx.begin()) {
-        auto it = ctx.begin();
-        while (it != ctx.end() && *it != '}') {
-            switch (*it) {
-                case 'X':
-                    use_uppercase = true;
-                    break;
-                case 's':
-                    put_delimiters = false;
-                    break;
-                case 'p':
-                    put_positions = false;
-                    break;
-                case 'n':
-                    put_newlines = false;
-                    show_ascii = false;
-                    break;
-                case 'a':
-                    if (put_newlines) {
-                        show_ascii = true;
-                    }
-                    break;
-                default:;
-            }
-
-            ++it;
-        }
-        return it;
-    }
-
-    // format the given bytes range as hex
-    template <typename FormatContext, typename Container>
-    auto format(const spdlog::details::dump_info<Container> &the_range, FormatContext &ctx) const -> decltype(ctx.out()) {
-        constexpr const char *hex_upper = "0123456789ABCDEF";
-        constexpr const char *hex_lower = "0123456789abcdef";
-        const char *hex_chars = use_uppercase ? hex_upper : hex_lower;
-        auto inserter = ctx.out();
-        int size_per_line = static_cast<int>(the_range.size_per_line());
-        auto start_of_line = the_range.get_begin();
-        for (auto i = the_range.get_begin(); i != the_range.get_end(); ++i) {
-            auto ch = static_cast<unsigned char>(*i);
-
-            if (put_newlines && (i == the_range.get_begin() || i - start_of_line >= size_per_line)) {
-                if (show_ascii && i != the_range.get_begin()) {
-                    *inserter++ = delimiter;
-                    *inserter++ = delimiter;
-                    for (auto j = start_of_line; j < i; ++j) {
-                        auto pc = static_cast<unsigned char>(*j);
-                        *inserter++ = std::isprint(pc) ? static_cast<char>(*j) : '.';
-                    }
-                }
-
-                put_newline(inserter, static_cast<size_t>(i - the_range.get_begin()));
-
-                // put first byte without delimiter in front of it
-                *inserter++ = hex_chars[(ch >> 4) & 0x0f];
-                *inserter++ = hex_chars[ch & 0x0f];
-                start_of_line = i;
-                continue;
-            }
-
-            if (put_delimiters && i != the_range.get_begin()) {
-                *inserter++ = delimiter;
-            }
-
-            *inserter++ = hex_chars[(ch >> 4) & 0x0f];
-            *inserter++ = hex_chars[ch & 0x0f];
-        }
-        if (show_ascii)  // add ascii to last line
-        {
-            if (the_range.get_end() - the_range.get_begin() > size_per_line) {
-                auto blank_num = size_per_line - (the_range.get_end() - start_of_line);
-                while (blank_num-- > 0) {
-                    *inserter++ = delimiter;
-                    *inserter++ = delimiter;
-                    if (put_delimiters) {
-                        *inserter++ = delimiter;
-                    }
-                }
-            }
-            *inserter++ = delimiter;
-            *inserter++ = delimiter;
-            for (auto j = start_of_line; j != the_range.get_end(); ++j) {
-                auto pc = static_cast<unsigned char>(*j);
-                *inserter++ = std::isprint(pc) ? static_cast<char>(*j) : '.';
-            }
-        }
-        return inserter;
-    }
-
-    // put newline(and position header)
-    template <typename It>
-    void put_newline(It inserter, std::size_t pos) const {
-#ifdef _WIN32
-        *inserter++ = '\r';
-#endif
-        *inserter++ = '\n';
-
-        if (put_positions) {
-            spdlog::fmt_lib::format_to(inserter, SPDLOG_FMT_STRING("{:04X}: "), pos);
-        }
-    }
-};  // namespace fmt

include/spdlog/common.h

@@ -1,44 +1,56 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
+//
+// Copyright(c) 2015 Gabi Melman.
 // Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
 
 #pragma once
 
-#include <array>
+#define SPDLOG_VERSION "0.17.0"
+
+#include "tweakme.h"
+
 #include <atomic>
 #include <chrono>
-#include <cstdint>
 #include <exception>
 #include <functional>
 #include <initializer_list>
 #include <memory>
 #include <string>
-#include <string_view>
+#include <unordered_map>
 
-#include "./source_loc.h"
-#include "fmt/base.h"
-#include "fmt/xchar.h"
-
-#if defined(SPDLOG_SHARED_LIB)
-    #if defined(_WIN32)
-        #ifdef spdlog_EXPORTS
-            #define SPDLOG_API __declspec(dllexport)
-        #else  // !spdlog_EXPORTS
-            #define SPDLOG_API __declspec(dllimport)
-        #endif
-    #else  // !defined(_WIN32)
-        #define SPDLOG_API __attribute__((visibility("default")))
-    #endif
-#else  // !defined(SPDLOG_SHARED_LIB)
-    #define SPDLOG_API
+#if defined(_WIN32) && defined(SPDLOG_WCHAR_FILENAMES)
+#include <codecvt>
+#include <locale>
 #endif
 
-#define SPDLOG_FMT_RUNTIME(format_string) fmt::runtime(format_string)
-#define SPDLOG_FMT_STRING(format_string) FMT_STRING(format_string)
+#include "details/null_mutex.h"
 
-#ifndef SPDLOG_FUNCTION
-    #define SPDLOG_FUNCTION static_cast<const char *>(__FUNCTION__)
+// visual studio upto 2013 does not support noexcept nor constexpr
+#if defined(_MSC_VER) && (_MSC_VER < 1900)
+#define SPDLOG_NOEXCEPT throw()
+#define SPDLOG_CONSTEXPR
+#else
+#define SPDLOG_NOEXCEPT noexcept
+#define SPDLOG_CONSTEXPR constexpr
 #endif
 
+// final keyword support. On by default. See tweakme.h
+#if defined(SPDLOG_NO_FINAL)
+#define SPDLOG_FINAL
+#else
+#define SPDLOG_FINAL final
+#endif
+
+#if defined(__GNUC__) || defined(__clang__)
+#define SPDLOG_DEPRECATED __attribute__((deprecated))
+#elif defined(_MSC_VER)
+#define SPDLOG_DEPRECATED __declspec(deprecated)
+#else
+#define SPDLOG_DEPRECATED
+#endif
+
+#include "fmt/fmt.h"
+
 namespace spdlog {
 
 class formatter;
@@ -50,70 +62,80 @@ class sink;
 using log_clock = std::chrono::system_clock;
 using sink_ptr = std::shared_ptr<sinks::sink>;
 using sinks_init_list = std::initializer_list<sink_ptr>;
-using err_handler = std::function<void(const std::string &err_msg)>;
-using string_view_t = std::basic_string_view<char>;
-using wstring_view_t = std::basic_string_view<wchar_t>;
-
-namespace fmt_lib = fmt;
-using memory_buf_t = fmt::basic_memory_buffer<char, 250>;
-using wmemory_buf_t = fmt::basic_memory_buffer<wchar_t, 250>;
-
-template <typename... Args>
-using format_string_t = fmt::format_string<Args...>;
-
-#define SPDLOG_LEVEL_TRACE 0
-#define SPDLOG_LEVEL_DEBUG 1
-#define SPDLOG_LEVEL_INFO 2
-#define SPDLOG_LEVEL_WARN 3
-#define SPDLOG_LEVEL_ERROR 4
-#define SPDLOG_LEVEL_CRITICAL 5
-#define SPDLOG_LEVEL_OFF 6
-
-#if !defined(SPDLOG_ACTIVE_LEVEL)
-    #define SPDLOG_ACTIVE_LEVEL SPDLOG_LEVEL_INFO
+using formatter_ptr = std::shared_ptr<spdlog::formatter>;
+#if defined(SPDLOG_NO_ATOMIC_LEVELS)
+using level_t = details::null_atomic_int;
+#else
+using level_t = std::atomic<int>;
 #endif
 
+using log_err_handler = std::function<void(const std::string &err_msg)>;
+
 // Log level enum
-enum class level : std::uint8_t {
-    trace = SPDLOG_LEVEL_TRACE,
-    debug = SPDLOG_LEVEL_DEBUG,
-    info = SPDLOG_LEVEL_INFO,
-    warn = SPDLOG_LEVEL_WARN,
-    err = SPDLOG_LEVEL_ERROR,
-    critical = SPDLOG_LEVEL_CRITICAL,
-    off = SPDLOG_LEVEL_OFF,
-    n_levels = SPDLOG_LEVEL_OFF + 1
+namespace level {
+enum level_enum
+{
+    trace = 0,
+    debug = 1,
+    info = 2,
+    warn = 3,
+    err = 4,
+    critical = 5,
+    off = 6
 };
 
-using atomic_level_t = std::atomic<level>;
+#if !defined(SPDLOG_LEVEL_NAMES)
+#define SPDLOG_LEVEL_NAMES                                                                                                                 \
+    {                                                                                                                                      \
+        "trace", "debug", "info", "warning", "error", "critical", "off"                                                                    \
+    }
+#endif
+static const char *level_names[] SPDLOG_LEVEL_NAMES;
 
-[[nodiscard]] constexpr size_t level_to_number(level lvl) noexcept { return static_cast<size_t>(lvl); }
+static const char *short_level_names[]{"T", "D", "I", "W", "E", "C", "O"};
 
-constexpr auto levels_count = level_to_number(level::n_levels);
-constexpr std::array<std::string_view, levels_count> level_string_views{"trace", "debug",    "info", "warning",
-                                                                        "error", "critical", "off"};
-constexpr std::array<std::string_view, levels_count> short_level_names{"T", "D", "I", "W", "E", "C", "O"};
-
-[[nodiscard]] constexpr std::string_view to_string_view(spdlog::level lvl) noexcept {
-    return level_string_views.at(level_to_number(lvl));
+inline const char *to_str(spdlog::level::level_enum l)
+{
+    return level_names[l];
 }
 
-[[nodiscard]] constexpr std::string_view to_short_string_view(spdlog::level lvl) noexcept {
-    return short_level_names.at(level_to_number(lvl));
+inline const char *to_short_str(spdlog::level::level_enum l)
+{
+    return short_level_names[l];
+}
+inline spdlog::level::level_enum from_str(const std::string &name)
+{
+    static std::unordered_map<std::string, level_enum> name_to_level = // map string->level
+        {{level_names[0], level::trace},                               // trace
+            {level_names[1], level::debug},                            // debug
+            {level_names[2], level::info},                             // info
+            {level_names[3], level::warn},                             // warn
+            {level_names[4], level::err},                              // err
+            {level_names[5], level::critical},                         // critical
+            {level_names[6], level::off}};                             // off
+
+    auto lvl_it = name_to_level.find(name);
+    return lvl_it != name_to_level.end() ? lvl_it->second : level::off;
 }
 
-[[nodiscard]] SPDLOG_API spdlog::level level_from_str(const std::string &name) noexcept;
+using level_hasher = std::hash<int>;
+} // namespace level
 
 //
-// Color mode used by sinks with color support.
+// Async overflow policy - block by default.
 //
-enum class color_mode { always, automatic, never };
+enum class async_overflow_policy
+{
+    block_retry,    // Block / yield / sleep until message can be enqueued
+    discard_log_msg // Discard the message it enqueue fails
+};
 
 //
 // Pattern time - specific time getting to use for pattern_formatter.
 // local time by default
 //
-enum class pattern_time_type {
+enum class pattern_time_type
+{
     local, // log localtime
     utc    // log utc
 };
@@ -121,19 +143,40 @@ enum class pattern_time_type {
 //
 // Log exception
 //
-class SPDLOG_API spdlog_ex : public std::exception {
+namespace details {
+namespace os {
+std::string errno_str(int err_num);
+}
+} // namespace details
+class spdlog_ex : public std::exception
+{
 public:
-    explicit spdlog_ex(std::string msg);
+    explicit spdlog_ex(std::string msg)
+        : _msg(std::move(msg))
+    {
+    }
 
-    spdlog_ex(const std::string &msg, int last_errno);
+    spdlog_ex(const std::string &msg, int last_errno)
+    {
+        _msg = msg + ": " + details::os::errno_str(last_errno);
+    }
 
-    [[nodiscard]] const char *what() const noexcept override;
+    const char *what() const SPDLOG_NOEXCEPT override
+    {
+        return _msg.c_str();
+    }
 
 private:
-    std::string msg_;
+    std::string _msg;
 };
 
-[[noreturn]] SPDLOG_API void throw_spdlog_ex(const std::string &msg, int last_errno);
-[[noreturn]] SPDLOG_API void throw_spdlog_ex(std::string msg);
+//
+// wchar support for windows file names (SPDLOG_WCHAR_FILENAMES must be defined)
+//
+#if defined(_WIN32) && defined(SPDLOG_WCHAR_FILENAMES)
+using filename_t = std::wstring;
+#else
+using filename_t = std::string;
+#endif
 
 } // namespace spdlog

include/spdlog/contrib/README.md

@@ -0,0 +1 @@
+Please put here your contribs. Popular contribs will be moved to main tree after stablization

include/spdlog/contrib/sinks/.gitignore

@@ -0,0 +1 @@
+

include/spdlog/contrib/sinks/step_file_sink.h

@@ -0,0 +1,163 @@
+#pragma once
+
+#include "../../details/file_helper.h"
+#include "../../details/null_mutex.h"
+#include "../../fmt/fmt.h"
+#include "../../sinks/base_sink.h"
+
+#include <algorithm>
+#include <cerrno>
+#include <chrono>
+#include <cstdio>
+#include <ctime>
+#include <mutex>
+#include <string>
+
+// Example for spdlog.h
+//
+// Create a file logger which creates new files with a specified time step and fixed file size:
+//
+// std::shared_ptr<logger> step_logger_mt(const std::string &logger_name, const filename_t &filename, unsigned seconds = 60, const
+// filename_t &tmp_ext = ".tmp", unsigned max_file_size = std::numeric_limits<unsigned>::max()); std::shared_ptr<logger>
+// step_logger_st(const std::string &logger_name, const filename_t &filename, unsigned seconds = 60, const filename_t &tmp_ext = ".tmp",
+// unsigned max_file_size = std::numeric_limits<unsigned>::max());
+
+// Example for spdlog_impl.h
+// Create a file logger that creates new files with a specified increment
+// inline std::shared_ptr<spdlog::logger> spdlog::step_logger_mt(
+//     const std::string &logger_name, const filename_t &filename_fmt, unsigned seconds, const filename_t &tmp_ext, unsigned max_file_size)
+// {
+//     return create<spdlog::sinks::step_file_sink_mt>(logger_name, filename_fmt, seconds, tmp_ext, max_file_size);
+// }
+
+// inline std::shared_ptr<spdlog::logger> spdlog::step_logger_st(
+//     const std::string &logger_name, const filename_t &filename_fmt, unsigned seconds, const filename_t &tmp_ext, unsigned max_file_size)
+// {
+//     return create<spdlog::sinks::step_file_sink_st>(logger_name, filename_fmt, seconds, tmp_ext, max_file_size);
+// }
+
+namespace spdlog {
+namespace sinks {
+
+/*
+ * Default generator of step log file names.
+ */
+struct default_step_file_name_calculator
+{
+    // Create filename for the form filename_YYYY-MM-DD_hh-mm-ss.ext
+    static std::tuple<filename_t, filename_t> calc_filename(const filename_t &filename, const filename_t &tmp_ext)
+    {
+        std::tm tm = spdlog::details::os::localtime();
+        filename_t basename, ext;
+        std::tie(basename, ext) = details::file_helper::split_by_extenstion(filename);
+        std::conditional<std::is_same<filename_t::value_type, char>::value, fmt::MemoryWriter, fmt::WMemoryWriter>::type w;
+        w.write(SPDLOG_FILENAME_T("{}_{:04d}-{:02d}-{:02d}_{:02d}-{:02d}-{:02d}{}"), basename, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
+            tm.tm_hour, tm.tm_min, tm.tm_sec, tmp_ext);
+        return std::make_tuple(w.str(), ext);
+    }
+};
+
+/*
+ * Rotating file sink based on size and a specified time step
+ */
+template<class Mutex, class FileNameCalc = default_step_file_name_calculator>
+class step_file_sink SPDLOG_FINAL : public base_sink<Mutex>
+{
+public:
+    step_file_sink(filename_t base_filename, unsigned step_seconds, filename_t tmp_ext, unsigned max_size)
+        : _base_filename(std::move(base_filename))
+        , _tmp_ext(std::move(tmp_ext))
+        , _step_seconds(step_seconds)
+        , _max_size(max_size)
+    {
+        if (step_seconds == 0)
+        {
+            throw spdlog_ex("step_file_sink: Invalid time step in ctor");
+        }
+        if (max_size == 0)
+        {
+            throw spdlog_ex("step_file_sink: Invalid max log size in ctor");
+        }
+
+        _tp = _next_tp();
+        std::tie(_current_filename, _ext) = FileNameCalc::calc_filename(_base_filename, _tmp_ext);
+
+        if (_tmp_ext == _ext)
+        {
+            throw spdlog_ex("step_file_sink: The temporary extension matches the specified in ctor");
+        }
+
+        _file_helper.open(_current_filename);
+        _current_size = _file_helper.size(); // expensive. called only once
+    }
+
+    ~step_file_sink()
+    {
+        try
+        {
+            close_current_file();
+        }
+        catch (...)
+        {
+        }
+    }
+
+protected:
+    void _sink_it(const details::log_msg &msg) override
+    {
+        _current_size += msg.formatted.size();
+        if (std::chrono::system_clock::now() >= _tp || _current_size > _max_size)
+        {
+            close_current_file();
+
+            std::tie(_current_filename, std::ignore) = FileNameCalc::calc_filename(_base_filename, _tmp_ext);
+            _file_helper.open(_current_filename);
+            _tp = _next_tp();
+            _current_size = msg.formatted.size();
+        }
+        _file_helper.write(msg);
+    }
+
+    void _flush() override
+    {
+        _file_helper.flush();
+    }
+
+private:
+    std::chrono::system_clock::time_point _next_tp()
+    {
+        return std::chrono::system_clock::now() + _step_seconds;
+    }
+
+    void close_current_file()
+    {
+        using details::os::filename_to_str;
+
+        filename_t src = _current_filename, target;
+        std::tie(target, std::ignore) = details::file_helper::split_by_extenstion(src);
+        target += _ext;
+
+        if (details::file_helper::file_exists(src) && details::os::rename(src, target) != 0)
+        {
+            throw spdlog_ex("step_file_sink: failed renaming " + filename_to_str(src) + " to " + filename_to_str(target), errno);
+        }
+    }
+
+    const filename_t _base_filename;
+    const filename_t _tmp_ext;
+    const std::chrono::seconds _step_seconds;
+    const unsigned _max_size;
+
+    std::chrono::system_clock::time_point _tp;
+    filename_t _current_filename;
+    filename_t _ext;
+    unsigned _current_size;
+
+    details::file_helper _file_helper;
+};
+
+using step_file_sink_mt = step_file_sink<std::mutex>;
+using step_file_sink_st = step_file_sink<details::null_mutex>;
+
+} // namespace sinks
+} // namespace spdlog

include/spdlog/details/async_log_helper.h

@@ -0,0 +1,342 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+// async log helper :
+// Process logs asynchronously using a back thread.
+//
+// If the internal queue of log messages reaches its max size,
+// then the client call will block until there is more room.
+//
+
+#pragma once
+
+#include "../common.h"
+#include "../details/log_msg.h"
+#include "../details/mpmc_blocking_q.h"
+#include "../details/os.h"
+#include "../formatter.h"
+#include "../sinks/sink.h"
+
+#include <chrono>
+#include <condition_variable>
+#include <exception>
+#include <functional>
+#include <iostream>
+#include <memory>
+#include <string>
+#include <thread>
+#include <utility>
+#include <vector>
+
+namespace spdlog {
+namespace details {
+
+class async_log_helper
+{
+    // Async msg to move to/from the queue
+    // Movable only. should never be copied
+    enum class async_msg_type
+    {
+        log,
+        flush,
+        terminate
+    };
+
+    struct async_msg
+    {        
+        level::level_enum level;
+        log_clock::time_point time;
+        size_t thread_id;
+        std::string txt;
+        async_msg_type msg_type;
+        size_t msg_id;
+
+        async_msg() = default;
+        ~async_msg() = default;
+
+        explicit async_msg(async_msg_type m_type)
+            : level(level::info)
+            , thread_id(0)
+            , msg_type(m_type)
+            , msg_id(0)
+        {
+        }
+
+        async_msg(async_msg &&other) = default;
+        async_msg &operator=(async_msg &&other) = default;
+
+        // never copy or assign. should only be moved..
+        async_msg(const async_msg &) = delete;
+        async_msg &operator=(const async_msg &other) = delete;
+
+        // construct from log_msg
+        explicit async_msg(const details::log_msg &m)
+            : level(m.level)
+            , time(m.time)
+            , thread_id(m.thread_id)
+            , txt(m.raw.data(), m.raw.size())
+            , msg_type(async_msg_type::log)
+            , msg_id(m.msg_id)
+        {
+        }
+
+        // copy into log_msg
+        void fill_log_msg(log_msg &msg, std::string* logger_name)
+        {
+            msg.logger_name = logger_name;
+            msg.level = level;
+            msg.time = time;
+            msg.thread_id = thread_id;
+            msg.raw.clear();
+            msg.raw << txt;
+            msg.msg_id = msg_id;
+        }
+    };
+
+public:
+    using item_type = async_msg;
+    using q_type = details::mpmc_bounded_queue<item_type>;
+
+    using clock = std::chrono::steady_clock;
+
+    async_log_helper(std::string logger_name,
+                     formatter_ptr formatter,
+                     std::vector<sink_ptr> sinks,
+                     size_t queue_size,
+                     const log_err_handler err_handler,
+                     const async_overflow_policy overflow_policy = async_overflow_policy::block_retry,
+                     std::function<void()> worker_warmup_cb = nullptr,
+                     const std::chrono::milliseconds &flush_interval_ms = std::chrono::milliseconds::zero(),
+                     std::function<void()> worker_teardown_cb = nullptr);
+
+    void log(const details::log_msg &msg);
+
+    // stop logging and join the back thread
+    ~async_log_helper();
+
+    async_log_helper(const async_log_helper &) = delete;
+    async_log_helper &operator=(const async_log_helper &) = delete;
+
+    void set_formatter(formatter_ptr msg_formatter);
+
+    void flush();
+
+    void set_error_handler(spdlog::log_err_handler err_handler);
+
+private:
+	std::string _logger_name;
+    formatter_ptr _formatter;
+    std::vector<std::shared_ptr<sinks::sink>> _sinks;
+
+    // queue of messages to log
+    q_type _q;
+
+    log_err_handler _err_handler;
+
+    std::chrono::time_point<log_clock> _last_flush;
+
+    // overflow policy
+    const async_overflow_policy _overflow_policy;
+
+    // worker thread warmup callback - one can set thread priority, affinity, etc
+    const std::function<void()> _worker_warmup_cb;
+
+    // auto periodic sink flush parameter
+    const std::chrono::milliseconds _flush_interval_ms;
+
+    // worker thread teardown callback
+    const std::function<void()> _worker_teardown_cb;
+
+    std::mutex null_mutex_;
+    // null_mutex null_mutex_;
+    std::condition_variable_any not_empty_cv_;
+    std::condition_variable_any not_full_cv_;
+
+    // worker thread
+    std::thread _worker_thread;
+
+    void enqueue_msg(async_msg &&new_msg, async_overflow_policy policy);
+
+    // worker thread main loop
+    void worker_loop();
+
+    // dequeue next message from the queue and process it.
+    // return false if termination of the queue is required
+    bool process_next_msg();
+
+    void handle_flush_interval();
+
+    void flush_sinks();
+};
+} // namespace details
+} // namespace spdlog
+
+///////////////////////////////////////////////////////////////////////////////
+// async_sink class implementation
+///////////////////////////////////////////////////////////////////////////////
+inline spdlog::details::async_log_helper::async_log_helper(std::string logger_name, 
+                                                           formatter_ptr formatter, 
+                                                           std::vector<sink_ptr> sinks,
+                                                           size_t queue_size,
+                                                           log_err_handler err_handler, 
+                                                           const async_overflow_policy overflow_policy,
+                                                           std::function<void()> worker_warmup_cb,
+                                                           const std::chrono::milliseconds &flush_interval_ms,
+                                                           std::function<void()> worker_teardown_cb)
+    : _logger_name(std::move(logger_name)) 
+	, _formatter(std::move(formatter))
+    , _sinks(std::move(sinks))
+    , _q(queue_size)
+    , _err_handler(std::move(err_handler))
+    , _last_flush(os::now())
+    , _overflow_policy(overflow_policy)
+    , _worker_warmup_cb(std::move(worker_warmup_cb))
+    , _flush_interval_ms(flush_interval_ms)
+    , _worker_teardown_cb(std::move(worker_teardown_cb))
+{
+    _worker_thread = std::thread(&async_log_helper::worker_loop, this);
+}
+
+// send to the worker thread terminate message, and join it.
+inline spdlog::details::async_log_helper::~async_log_helper()
+{
+    try
+    {
+        enqueue_msg(async_msg(async_msg_type::terminate), async_overflow_policy::block_retry);
+        _worker_thread.join();
+    }
+    catch (...) // don't crash in destructor
+    {
+    }
+}
+
+// try to push and block until succeeded (if the policy is not to discard when the queue is full)
+inline void spdlog::details::async_log_helper::log(const details::log_msg &msg)
+{
+    enqueue_msg(async_msg(msg), _overflow_policy);
+}
+
+inline void spdlog::details::async_log_helper::enqueue_msg(details::async_log_helper::async_msg &&new_msg, async_overflow_policy policy)
+{
+
+    // block until succeeded pushing to the queue
+    if (policy == async_overflow_policy::block_retry)
+    {
+        _q.enqueue(std::move(new_msg));
+    }
+    else
+    {
+        _q.enqueue_nowait(std::move(new_msg));
+    }
+}
+
+// optionally wait for the queue be empty and request flush from the sinks
+inline void spdlog::details::async_log_helper::flush()
+{
+    enqueue_msg(async_msg(async_msg_type::flush), _overflow_policy);
+}
+
+inline void spdlog::details::async_log_helper::worker_loop()
+{
+    if (_worker_warmup_cb)
+    {
+        _worker_warmup_cb();
+    }
+    auto active = true;
+    while (active)
+    {
+        try
+        {
+            active = process_next_msg();
+        }
+        catch (const std::exception &ex)
+        {
+            _err_handler(ex.what());
+        }
+        catch (...)
+        {
+            _err_handler("Unknown exeption in async logger worker loop.");
+        }
+    }
+    if (_worker_teardown_cb)
+    {
+        _worker_teardown_cb();
+    }
+}
+
+// process next message in the queue
+// return true if this thread should still be active (while no terminate msg was received)
+inline bool spdlog::details::async_log_helper::process_next_msg()
+{
+    async_msg incoming_async_msg;
+    bool dequeued = _q.dequeue_for(incoming_async_msg, std::chrono::seconds(2));
+    if (!dequeued)
+    {
+        handle_flush_interval();
+        return true;
+    }
+
+    switch (incoming_async_msg.msg_type)
+    {
+    case async_msg_type::flush:
+        flush_sinks();
+        return true;
+
+    case async_msg_type::terminate:
+        flush_sinks();
+        return false;
+
+    default:
+        log_msg incoming_log_msg;
+        incoming_async_msg.fill_log_msg(incoming_log_msg, &_logger_name);
+        _formatter->format(incoming_log_msg);
+        for (auto &s : _sinks)
+        {
+            if (s->should_log(incoming_log_msg.level))
+            {
+                s->log(incoming_log_msg);
+            }
+        }
+        handle_flush_interval();
+        return true;
+    }
+    assert(false);
+    return true; // should not be reached
+}
+
+inline void spdlog::details::async_log_helper::set_formatter(formatter_ptr msg_formatter)
+{
+    _formatter = std::move(msg_formatter);
+}
+
+inline void spdlog::details::async_log_helper::set_error_handler(spdlog::log_err_handler err_handler)
+{
+    _err_handler = std::move(err_handler);
+}
+
+// flush all sinks if _flush_interval_ms has expired.
+inline void spdlog::details::async_log_helper::handle_flush_interval()
+{
+    if (_flush_interval_ms == std::chrono::milliseconds::zero())
+    {
+        return;
+    }
+    auto delta = details::os::now() - _last_flush;
+    ;
+    if (delta >= _flush_interval_ms)
+    {
+        flush_sinks();
+    }
+}
+
+// flush all sinks if _flush_interval_ms has expired. only called if queue is empty
+inline void spdlog::details::async_log_helper::flush_sinks()
+{
+    for (auto &s : _sinks)
+    {
+        s->flush();
+    }
+    _last_flush = os::now();
+}

include/spdlog/details/async_log_msg.h

@@ -1,35 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#include <cstdint>
-
-#include "./log_msg.h"
-
-namespace spdlog {
-namespace details {
-
-// Extend log_msg with internal buffer to store its payload.
-// This is needed since log_msg holds string_views that points to stack data.
-class SPDLOG_API async_log_msg : public log_msg {
-public:
-    enum class type : std::uint8_t { log, flush, terminate };
-    async_log_msg() = default;
-    explicit async_log_msg(type type);
-    async_log_msg(type type, const log_msg &orig_msg);
-    ~async_log_msg() = default;
-    async_log_msg(const async_log_msg &other);
-    async_log_msg(async_log_msg &&other) noexcept;
-    async_log_msg &operator=(const async_log_msg &other);
-    async_log_msg &operator=(async_log_msg &&other) noexcept;
-    [[nodiscard]] type message_type() const { return msg_type_; }
-
-private:
-    type msg_type_{type::log};
-    memory_buf_t buffer_;
-    void update_string_views();
-};
-
-}  // namespace details
-}  // namespace spdlog

include/spdlog/details/async_logger_impl.h

@@ -0,0 +1,95 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#pragma once
+
+// Async Logger implementation
+// Use an async_sink (queue per logger) to perform the logging in a worker thread
+
+#include "../async_logger.h"
+#include "../details/async_log_helper.h"
+
+#include <chrono>
+#include <functional>
+#include <memory>
+#include <string>
+
+template<class It>
+inline spdlog::async_logger::async_logger(const std::string &logger_name, const It &begin, const It &end, size_t queue_size,
+    const async_overflow_policy overflow_policy, const std::function<void()> &worker_warmup_cb,
+    const std::chrono::milliseconds &flush_interval_ms, const std::function<void()> &worker_teardown_cb)
+    : logger(logger_name, begin, end)
+    , _async_log_helper(new details::async_log_helper(
+          logger_name, _formatter, _sinks, queue_size, _err_handler, overflow_policy, worker_warmup_cb, flush_interval_ms, worker_teardown_cb))
+{
+}
+
+inline spdlog::async_logger::async_logger(const std::string &logger_name, sinks_init_list sinks_list, size_t queue_size,
+    const async_overflow_policy overflow_policy, const std::function<void()> &worker_warmup_cb,
+    const std::chrono::milliseconds &flush_interval_ms, const std::function<void()> &worker_teardown_cb)
+    : async_logger(logger_name, sinks_list.begin(), sinks_list.end(), queue_size, overflow_policy, worker_warmup_cb, flush_interval_ms,
+          worker_teardown_cb)
+{
+}
+
+inline spdlog::async_logger::async_logger(const std::string &logger_name, sink_ptr single_sink, size_t queue_size,
+    const async_overflow_policy overflow_policy, const std::function<void()> &worker_warmup_cb,
+    const std::chrono::milliseconds &flush_interval_ms, const std::function<void()> &worker_teardown_cb)
+    : async_logger(
+          logger_name, {std::move(single_sink)}, queue_size, overflow_policy, worker_warmup_cb, flush_interval_ms, worker_teardown_cb)
+{
+}
+
+inline void spdlog::async_logger::flush()
+{
+    _async_log_helper->flush();
+}
+
+// Error handler
+inline void spdlog::async_logger::set_error_handler(spdlog::log_err_handler err_handler)
+{
+    _err_handler = err_handler;
+    _async_log_helper->set_error_handler(err_handler);
+}
+inline spdlog::log_err_handler spdlog::async_logger::error_handler()
+{
+    return _err_handler;
+}
+
+inline void spdlog::async_logger::_set_formatter(spdlog::formatter_ptr msg_formatter)
+{
+    _formatter = msg_formatter;
+    _async_log_helper->set_formatter(_formatter);
+}
+
+inline void spdlog::async_logger::_set_pattern(const std::string &pattern, pattern_time_type pattern_time)
+{
+    _formatter = std::make_shared<pattern_formatter>(pattern, pattern_time);
+    _async_log_helper->set_formatter(_formatter);
+}
+
+inline void spdlog::async_logger::_sink_it(details::log_msg &msg)
+{
+    try
+    {
+#if defined(SPDLOG_ENABLE_MESSAGE_COUNTER)
+        _incr_msg_counter(msg);
+#endif
+        _async_log_helper->log(msg);
+        if (_should_flush_on(msg))
+        {
+            _async_log_helper->flush(); // do async flush
+        }
+    }
+    catch (const std::exception &ex)
+    {
+        _err_handler(ex.what());
+    }
+    catch (...)
+    {
+        _err_handler("Unknown exception in logger " + _name);
+        throw;
+    }
+}

include/spdlog/details/circular_q.h

@@ -1,119 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-// circular q view of std::vector.
-#pragma once
-
-#include <cassert>
-#include <vector>
-
-namespace spdlog {
-namespace details {
-template <typename T>
-class circular_q {
-    size_t max_items_ = 0;
-    typename std::vector<T>::size_type head_ = 0;
-    typename std::vector<T>::size_type tail_ = 0;
-    size_t overrun_counter_ = 0;
-    std::vector<T> v_;
-
-public:
-    using value_type = T;
-
-    // empty ctor - create a disabled queue with no elements allocated at all
-    circular_q() = default;
-
-    explicit circular_q(size_t max_items)
-        : max_items_(max_items + 1)  // one item is reserved as marker for full q
-          ,
-          v_(max_items_) {}
-
-    circular_q(const circular_q &) = default;
-    circular_q &operator=(const circular_q &) = default;
-
-    // move cannot be default,
-    // since we need to reset head_, tail_, etc. to zero in the moved object
-    circular_q(circular_q &&other) noexcept { copy_moveable(std::move(other)); }
-
-    circular_q &operator=(circular_q &&other) noexcept {
-        copy_moveable(std::move(other));
-        return *this;
-    }
-
-    // push back, overrun (oldest) item if no room left
-    void push_back(T &&item) {
-        if (max_items_ > 0) {
-            v_[tail_] = std::move(item);
-            tail_ = (tail_ + 1) % max_items_;
-
-            if (tail_ == head_)  // overrun last item if full
-            {
-                head_ = (head_ + 1) % max_items_;
-                ++overrun_counter_;
-            }
-        }
-    }
-
-    // Return const reference to the front item.
-    // If there are no elements in the container, the behavior is undefined.
-    [[nodiscard]] const T &front() const { return v_[head_]; }
-
-    // Return reference to the front item.
-    // If there are no elements in the container, the behavior is undefined.
-    [[nodiscard]] T &front() { return v_[head_]; }
-
-    // Return number of elements actually stored
-    [[nodiscard]] size_t size() const {
-        if (tail_ >= head_) {
-            return tail_ - head_;
-        } else {
-            return max_items_ - (head_ - tail_);
-        }
-    }
-
-    // Return const reference to item by index.
-    // If index is out of range 0…size()-1, the behavior is undefined.
-    const T &operator[](size_t idx) const {
-        assert(idx < size());
-        assert(max_items_ > 0);
-        return v_[(head_ + idx) % max_items_];
-    }
-
-    // Pop item from front if not empty.
-    void pop_front() {
-        if (!empty()) {
-            head_ = (head_ + 1) % max_items_;
-        }
-    }
-
-    [[nodiscard]] bool empty() const { return tail_ == head_; }
-
-    [[nodiscard]] bool full() const {
-        // head is ahead of the tail by 1
-        if (max_items_ > 0) {
-            return ((tail_ + 1) % max_items_) == head_;
-        }
-        return true;
-    }
-
-    [[nodiscard]] size_t overrun_counter() const { return overrun_counter_; }
-
-    void reset_overrun_counter() { overrun_counter_ = 0; }
-
-private:
-    // copy from other&& and reset it to disabled state
-    void copy_moveable(circular_q &&other) noexcept {
-        max_items_ = other.max_items_;
-        head_ = other.head_;
-        tail_ = other.tail_;
-        overrun_counter_ = other.overrun_counter_;
-        v_ = std::move(other.v_);
-
-        // put &&other in disabled, but valid state
-        other.max_items_ = 0;
-        other.head_ = other.tail_ = 0;
-        other.overrun_counter_ = 0;
-    }
-};
-}  // namespace details
-}  // namespace spdlog

include/spdlog/details/err_helper.h

@@ -1,31 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#include <chrono>
-#include <exception>
-#include <mutex>
-#include <string>
-
-#include "spdlog/common.h"
-
-// by default, prints the error to stderr, at max rate of 1/sec thread safe
-namespace spdlog {
-namespace details {
-class SPDLOG_API err_helper {
-    err_handler custom_err_handler_;
-    std::chrono::steady_clock::time_point last_report_time_;
-    mutable std::mutex mutex_;
-
-public:
-    err_helper() = default;
-    ~err_helper() = default;
-    err_helper(const err_helper& other);
-    err_helper(err_helper&& other) noexcept;
-    void handle_ex(const std::string& origin, const source_loc& loc, const std::exception& ex) noexcept;
-    void handle_unknown_ex(const std::string& origin, const source_loc& loc) noexcept;
-    void set_err_handler(err_handler handler);
-};
-}  // namespace details
-}  // namespace spdlog

include/spdlog/details/file_helper.h

@@ -1,44 +1,151 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
+//
+// Copyright(c) 2015 Gabi Melman.
 // Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
 
 #pragma once
 
-#include <tuple>
+// Helper class for file sink
+// When failing to open a file, retry several times(5) with small delay between the tries(10 ms)
+// Throw spdlog_ex exception on errors
 
-#include "../common.h"
-#include "../file_event_handlers.h"
+#include "../details/log_msg.h"
+#include "../details/os.h"
+
+#include <cerrno>
+#include <chrono>
+#include <cstdio>
+#include <string>
+#include <thread>
+#include <tuple>
 
 namespace spdlog {
 namespace details {
 
-// Helper class for file sinks.
-// When failing to open a file, retry several times(5) with a delay interval(10 ms).
-// Throw spdlog_ex exception on errors.
+class file_helper
+{
 
-class SPDLOG_API file_helper {
 public:
-    file_helper() = default;
-    explicit file_helper(file_event_handlers event_handlers);
+    const int open_tries = 5;
+    const int open_interval = 10;
+
+    explicit file_helper() = default;
 
     file_helper(const file_helper &) = delete;
     file_helper &operator=(const file_helper &) = delete;
-    ~file_helper();
 
-    void open(const filename_t &fname, bool truncate = false);
-    void reopen(bool truncate);
-    void flush() const;
-    void sync() const;
-    void close();
-    void write(const memory_buf_t &buf) const;
-    size_t size() const;
-    const filename_t &filename() const;
+    ~file_helper()
+    {
+        close();
+    }
+
+    void open(const filename_t &fname, bool truncate = false)
+    {
+        close();
+        auto *mode = truncate ? SPDLOG_FILENAME_T("wb") : SPDLOG_FILENAME_T("ab");
+        _filename = fname;
+        for (int tries = 0; tries < open_tries; ++tries)
+        {
+            if (!os::fopen_s(&_fd, fname, mode))
+            {
+                return;
+            }
+
+            details::os::sleep_for_millis(open_interval);
+        }
+
+        throw spdlog_ex("Failed opening file " + os::filename_to_str(_filename) + " for writing", errno);
+    }
+
+    void reopen(bool truncate)
+    {
+        if (_filename.empty())
+        {
+            throw spdlog_ex("Failed re opening file - was not opened before");
+        }
+        open(_filename, truncate);
+    }
+
+    void flush()
+    {
+        std::fflush(_fd);
+    }
+
+    void close()
+    {
+        if (_fd != nullptr)
+        {
+            std::fclose(_fd);
+            _fd = nullptr;
+        }
+    }
+
+    void write(const log_msg &msg)
+    {
+        size_t msg_size = msg.formatted.size();
+        auto data = msg.formatted.data();
+        if (std::fwrite(data, 1, msg_size, _fd) != msg_size)
+        {
+            throw spdlog_ex("Failed writing to file " + os::filename_to_str(_filename), errno);
+        }
+    }
+
+    size_t size() const
+    {
+        if (_fd == nullptr)
+        {
+            throw spdlog_ex("Cannot use size() on closed file " + os::filename_to_str(_filename));
+        }
+        return os::filesize(_fd);
+    }
+
+    const filename_t &filename() const
+    {
+        return _filename;
+    }
+
+    static bool file_exists(const filename_t &fname)
+    {
+        return os::file_exists(fname);
+    }
+
+    //
+    // return file path and its extension:
+    //
+    // "mylog.txt" => ("mylog", ".txt")
+    // "mylog" => ("mylog", "")
+    // "mylog." => ("mylog.", "")
+    // "/dir1/dir2/mylog.txt" => ("/dir1/dir2/mylog", ".txt")
+    //
+    // the starting dot in filenames is ignored (hidden files):
+    //
+    // ".mylog" => (".mylog". "")
+    // "my_folder/.mylog" => ("my_folder/.mylog", "")
+    // "my_folder/.mylog.txt" => ("my_folder/.mylog", ".txt")
+    static std::tuple<filename_t, filename_t> split_by_extenstion(const spdlog::filename_t &fname)
+    {
+        auto ext_index = fname.rfind('.');
+
+        // no valid extension found - return whole path and empty string as extension
+        if (ext_index == filename_t::npos || ext_index == 0 || ext_index == fname.size() - 1)
+        {
+            return std::make_tuple(fname, spdlog::filename_t());
+        }
+
+        // treat casese like "/etc/rc.d/somelogfile or "/abc/.hiddenfile"
+        auto folder_index = fname.rfind(details::os::folder_sep);
+        if (folder_index != fname.npos && folder_index >= ext_index - 1)
+        {
+            return std::make_tuple(fname, spdlog::filename_t());
+        }
+
+        // finally - return a valid base and extension tuple
+        return std::make_tuple(fname.substr(0, ext_index), fname.substr(ext_index));
+    }
 
 private:
-    const int open_tries_ = 5;
-    const unsigned int open_interval_ = 10;
-    std::FILE *fd_{nullptr};
-    filename_t filename_;
-    file_event_handlers event_handlers_;
+    FILE *_fd{nullptr};
+    filename_t _filename;
 };
 } // namespace details
 } // namespace spdlog

include/spdlog/details/fmt_helper.h

@@ -1,116 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-#pragma once
-
-#include <chrono>
-#include <iterator>
-#include <type_traits>
-
-#include "../common.h"
-
-// Some fmt helpers to efficiently format and pad ints and strings
-namespace spdlog {
-namespace details {
-namespace fmt_helper {
-
-inline void append_string_view(spdlog::string_view_t view, memory_buf_t &dest) {
-    const auto *buf_ptr = view.data();
-    dest.append(buf_ptr, buf_ptr + view.size());
-}
-
-template <typename T>
-void append_int(T n, memory_buf_t &dest) {
-    fmt::format_int i(n);
-    dest.append(i.data(), i.data() + i.size());
-}
-
-template <typename T>
-constexpr unsigned int count_digits_fallback(T n) {
-    // taken from fmt: https://github.com/fmtlib/fmt/blob/8.0.1/include/fmt/format.h#L899-L912
-    unsigned int count = 1;
-    for (;;) {
-        // Integer division is slow so do it for a group of four digits instead
-        // of for every digit. The idea comes from the talk by Alexandrescu
-        // "Three Optimization Tips for C++". See speed-test for a comparison.
-        if (n < 10) return count;
-        if (n < 100) return count + 1;
-        if (n < 1000) return count + 2;
-        if (n < 10000) return count + 3;
-        n /= 10000U;
-        count += 4;
-    }
-}
-
-template <typename T>
-inline unsigned int count_digits(T n) {
-    using count_type = std::conditional_t<(sizeof(T) > sizeof(uint32_t)), uint64_t, uint32_t>;
-
-    return static_cast<unsigned int>(fmt::
-// fmt 7.0.0 renamed the internal namespace to detail.
-// See: https://github.com/fmtlib/fmt/issues/1538
-#if FMT_VERSION < 70000
-                                         internal
-#else
-                                         detail
-#endif
-                                     ::count_digits(static_cast<count_type>(n)));
-}
-
-inline void pad2(int n, memory_buf_t &dest) {
-    if (n >= 0 && n < 100)  // 0-99
-    {
-        dest.push_back(static_cast<char>('0' + (n / 10)));
-        dest.push_back(static_cast<char>('0' + (n % 10)));
-    } else  // unlikely, but just in case, let fmt deal with it
-    {
-        fmt_lib::format_to(std::back_inserter(dest), SPDLOG_FMT_STRING("{:02}"), n);
-    }
-}
-
-template <typename T>
-inline void pad_uint(T n, unsigned int width, memory_buf_t &dest) {
-    static_assert(std::is_unsigned_v<T>, "pad_uint must get unsigned T");
-    for (auto digits = count_digits(n); digits < width; ++digits) {
-        dest.push_back('0');
-    }
-    append_int(n, dest);
-}
-
-template <typename T>
-void pad3(T n, memory_buf_t &dest) {
-    static_assert(std::is_unsigned_v<T>, "pad3 must get unsigned T");
-    if (n < 1000) {
-        dest.push_back(static_cast<char>((n / 100) + '0'));
-        n = n % 100;
-        dest.push_back(static_cast<char>((n / 10) + '0'));
-        dest.push_back(static_cast<char>((n % 10) + '0'));
-    } else {
-        append_int(n, dest);
-    }
-}
-
-template <typename T>
-void pad6(T n, memory_buf_t &dest) {
-    pad_uint(n, 6, dest);
-}
-
-template <typename T>
-void pad9(T n, memory_buf_t &dest) {
-    pad_uint(n, 9, dest);
-}
-
-// return fraction of a second of the given time_point.
-// e.g.
-// fraction<std::milliseconds>(tp) -> will return the millis part of the second
-template <typename ToDuration>
-ToDuration time_fraction(log_clock::time_point tp) {
-    using std::chrono::duration_cast;
-    using std::chrono::seconds;
-    auto duration = tp.time_since_epoch();
-    auto secs = duration_cast<seconds>(duration);
-    return duration_cast<ToDuration>(duration) - duration_cast<ToDuration>(secs);
-}
-
-}  // namespace fmt_helper
-}  // namespace details
-}  // namespace spdlog

include/spdlog/details/log_msg.h

@@ -1,33 +1,48 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
+//
+// Copyright(c) 2015 Gabi Melman.
 // Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
 
 #pragma once
 
-#include <string>
-
 #include "../common.h"
+#include "../details/os.h"
+
+#include <string>
+#include <utility>
 
 namespace spdlog {
 namespace details {
-struct SPDLOG_API log_msg {
+struct log_msg
+{
     log_msg() = default;
-    log_msg(log_clock::time_point log_time, const source_loc &loc, string_view_t logger_name, level lvl, string_view_t msg);
-    log_msg(const source_loc &loc, string_view_t logger_name, level lvl, string_view_t msg);
-    log_msg(string_view_t logger_name, level lvl, string_view_t msg);
-    log_msg(const log_msg &other) = default;
-    log_msg &operator=(const log_msg &other) = default;
+    log_msg(const std::string *loggers_name, level::level_enum lvl)
+        : logger_name(loggers_name)
+        , level(lvl)
+    {
+#ifndef SPDLOG_NO_DATETIME
+        time = os::now();
+#endif
 
-    string_view_t logger_name;
-    level log_level{level::off};
+#ifndef SPDLOG_NO_THREAD_ID
+        thread_id = os::thread_id();
+#endif
+    }
+
+    log_msg(const log_msg &other) = delete;
+    log_msg &operator=(log_msg &&other) = delete;
+    log_msg(log_msg &&other) = delete;
+
+    const std::string *logger_name{nullptr};
+    level::level_enum level;
     log_clock::time_point time;
-    size_t thread_id{0};
-
-    // wrapping the formatted text with color (updated by pattern_formatter).
-    mutable size_t color_range_start{0};
-    mutable size_t color_range_end{0};
-
-    source_loc source;
-    string_view_t payload;
+    size_t thread_id;
+    fmt::MemoryWriter raw;
+    fmt::MemoryWriter formatted;
+    size_t msg_id{0};
+    // wrap this range with color codes
+    size_t color_range_start{0};
+    size_t color_range_end{0};
 };
 } // namespace details
 } // namespace spdlog

include/spdlog/details/logger_impl.h

@@ -0,0 +1,368 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#pragma once
+
+#include "../logger.h"
+
+#include <memory>
+#include <string>
+
+// create logger with given name, sinks and the default pattern formatter
+// all other ctors will call this one
+template<class It>
+inline spdlog::logger::logger(std::string logger_name, const It &begin, const It &end)
+    : _name(std::move(logger_name))
+    , _sinks(begin, end)
+    , _formatter(std::make_shared<pattern_formatter>("%+"))
+    , _level(level::info)
+    , _flush_level(level::off)
+    , _last_err_time(0)
+    , _msg_counter(1) // message counter will start from 1. 0-message id will be reserved for controll messages
+{
+    _err_handler = [this](const std::string &msg) { this->_default_err_handler(msg); };
+}
+
+// ctor with sinks as init list
+inline spdlog::logger::logger(const std::string &logger_name, sinks_init_list sinks_list)
+    : logger(logger_name, sinks_list.begin(), sinks_list.end())
+{
+}
+
+// ctor with single sink
+inline spdlog::logger::logger(const std::string &logger_name, spdlog::sink_ptr single_sink)
+    : logger(logger_name, {std::move(single_sink)})
+{
+}
+
+inline spdlog::logger::~logger() = default;
+
+inline void spdlog::logger::set_formatter(spdlog::formatter_ptr msg_formatter)
+{
+    _set_formatter(std::move(msg_formatter));
+}
+
+inline void spdlog::logger::set_pattern(const std::string &pattern, pattern_time_type pattern_time)
+{
+    _set_pattern(pattern, pattern_time);
+}
+
+template<typename... Args>
+inline void spdlog::logger::log(level::level_enum lvl, const char *fmt, const Args &... args)
+{
+    if (!should_log(lvl))
+    {
+        return;
+    }
+
+    try
+    {
+        details::log_msg log_msg(&_name, lvl);
+
+#if defined(SPDLOG_FMT_PRINTF)
+        fmt::printf(log_msg.raw, fmt, args...);
+#else
+        log_msg.raw.write(fmt, args...);
+#endif
+        _sink_it(log_msg);
+    }
+    catch (const std::exception &ex)
+    {
+        _err_handler(ex.what());
+    }
+    catch (...)
+    {
+        _err_handler("Unknown exception in logger " + _name);
+        throw;
+    }
+}
+
+template<typename... Args>
+inline void spdlog::logger::log(level::level_enum lvl, const char *msg)
+{
+    if (!should_log(lvl))
+    {
+        return;
+    }
+    try
+    {
+        details::log_msg log_msg(&_name, lvl);
+        log_msg.raw << msg;
+        _sink_it(log_msg);
+    }
+    catch (const std::exception &ex)
+    {
+        _err_handler(ex.what());
+    }
+    catch (...)
+    {
+        _err_handler("Unknown exception in logger " + _name);
+        throw;
+    }
+}
+
+template<typename T>
+inline void spdlog::logger::log(level::level_enum lvl, const T &msg)
+{
+    if (!should_log(lvl))
+    {
+        return;
+    }
+    try
+    {
+        details::log_msg log_msg(&_name, lvl);
+        log_msg.raw << msg;
+        _sink_it(log_msg);
+    }
+    catch (const std::exception &ex)
+    {
+        _err_handler(ex.what());
+    }
+    catch (...)
+    {
+        _err_handler("Unknown exception in logger " + _name);
+        throw;
+    }
+}
+
+template<typename Arg1, typename... Args>
+inline void spdlog::logger::trace(const char *fmt, const Arg1 &arg1, const Args &... args)
+{
+    log(level::trace, fmt, arg1, args...);
+}
+
+template<typename Arg1, typename... Args>
+inline void spdlog::logger::debug(const char *fmt, const Arg1 &arg1, const Args &... args)
+{
+    log(level::debug, fmt, arg1, args...);
+}
+
+template<typename Arg1, typename... Args>
+inline void spdlog::logger::info(const char *fmt, const Arg1 &arg1, const Args &... args)
+{
+    log(level::info, fmt, arg1, args...);
+}
+
+template<typename Arg1, typename... Args>
+inline void spdlog::logger::warn(const char *fmt, const Arg1 &arg1, const Args &... args)
+{
+    log(level::warn, fmt, arg1, args...);
+}
+
+template<typename Arg1, typename... Args>
+inline void spdlog::logger::error(const char *fmt, const Arg1 &arg1, const Args &... args)
+{
+    log(level::err, fmt, arg1, args...);
+}
+
+template<typename Arg1, typename... Args>
+inline void spdlog::logger::critical(const char *fmt, const Arg1 &arg1, const Args &... args)
+{
+    log(level::critical, fmt, arg1, args...);
+}
+
+template<typename T>
+inline void spdlog::logger::trace(const T &msg)
+{
+    log(level::trace, msg);
+}
+
+template<typename T>
+inline void spdlog::logger::debug(const T &msg)
+{
+    log(level::debug, msg);
+}
+
+template<typename T>
+inline void spdlog::logger::info(const T &msg)
+{
+    log(level::info, msg);
+}
+
+template<typename T>
+inline void spdlog::logger::warn(const T &msg)
+{
+    log(level::warn, msg);
+}
+
+template<typename T>
+inline void spdlog::logger::error(const T &msg)
+{
+    log(level::err, msg);
+}
+
+template<typename T>
+inline void spdlog::logger::critical(const T &msg)
+{
+    log(level::critical, msg);
+}
+
+#ifdef SPDLOG_WCHAR_TO_UTF8_SUPPORT
+#include <codecvt>
+#include <locale>
+
+template<typename... Args>
+inline void spdlog::logger::log(level::level_enum lvl, const wchar_t *msg)
+{
+    std::wstring_convert<std::codecvt_utf8<wchar_t>> conv;
+
+    log(lvl, conv.to_bytes(msg));
+}
+
+template<typename... Args>
+inline void spdlog::logger::log(level::level_enum lvl, const wchar_t *fmt, const Args &... args)
+{
+    fmt::WMemoryWriter wWriter;
+
+    wWriter.write(fmt, args...);
+    log(lvl, wWriter.c_str());
+}
+
+template<typename... Args>
+inline void spdlog::logger::trace(const wchar_t *fmt, const Args &... args)
+{
+    log(level::trace, fmt, args...);
+}
+
+template<typename... Args>
+inline void spdlog::logger::debug(const wchar_t *fmt, const Args &... args)
+{
+    log(level::debug, fmt, args...);
+}
+
+template<typename... Args>
+inline void spdlog::logger::info(const wchar_t *fmt, const Args &... args)
+{
+    log(level::info, fmt, args...);
+}
+
+template<typename... Args>
+inline void spdlog::logger::warn(const wchar_t *fmt, const Args &... args)
+{
+    log(level::warn, fmt, args...);
+}
+
+template<typename... Args>
+inline void spdlog::logger::error(const wchar_t *fmt, const Args &... args)
+{
+    log(level::err, fmt, args...);
+}
+
+template<typename... Args>
+inline void spdlog::logger::critical(const wchar_t *fmt, const Args &... args)
+{
+    log(level::critical, fmt, args...);
+}
+
+#endif // SPDLOG_WCHAR_TO_UTF8_SUPPORT
+
+//
+// name and level
+//
+inline const std::string &spdlog::logger::name() const
+{
+    return _name;
+}
+
+inline void spdlog::logger::set_level(spdlog::level::level_enum log_level)
+{
+    _level.store(log_level);
+}
+
+inline void spdlog::logger::set_error_handler(spdlog::log_err_handler err_handler)
+{
+    _err_handler = std::move(err_handler);
+}
+
+inline spdlog::log_err_handler spdlog::logger::error_handler()
+{
+    return _err_handler;
+}
+
+inline void spdlog::logger::flush_on(level::level_enum log_level)
+{
+    _flush_level.store(log_level);
+}
+
+inline spdlog::level::level_enum spdlog::logger::level() const
+{
+    return static_cast<spdlog::level::level_enum>(_level.load(std::memory_order_relaxed));
+}
+
+inline bool spdlog::logger::should_log(spdlog::level::level_enum msg_level) const
+{
+    return msg_level >= _level.load(std::memory_order_relaxed);
+}
+
+//
+// protected virtual called at end of each user log call (if enabled) by the line_logger
+//
+inline void spdlog::logger::_sink_it(details::log_msg &msg)
+{
+#if defined(SPDLOG_ENABLE_MESSAGE_COUNTER)
+    _incr_msg_counter(msg);
+#endif
+    _formatter->format(msg);
+    for (auto &sink : _sinks)
+    {
+        if (sink->should_log(msg.level))
+        {
+            sink->log(msg);
+        }
+    }
+
+    if (_should_flush_on(msg))
+    {
+        flush();
+    }
+}
+
+inline void spdlog::logger::_set_pattern(const std::string &pattern, pattern_time_type pattern_time)
+{
+    _formatter = std::make_shared<pattern_formatter>(pattern, pattern_time);
+}
+
+inline void spdlog::logger::_set_formatter(formatter_ptr msg_formatter)
+{
+    _formatter = std::move(msg_formatter);
+}
+
+inline void spdlog::logger::flush()
+{
+    for (auto &sink : _sinks)
+    {
+        sink->flush();
+    }
+}
+
+inline void spdlog::logger::_default_err_handler(const std::string &msg)
+{
+    auto now = time(nullptr);
+    if (now - _last_err_time < 60)
+    {
+        return;
+    }
+    _last_err_time = now;
+    auto tm_time = details::os::localtime(now);
+    char date_buf[100];
+    std::strftime(date_buf, sizeof(date_buf), "%Y-%m-%d %H:%M:%S", &tm_time);
+    fmt::print(stderr, "[*** LOG ERROR ***] [{}] [{}] {}\n", date_buf, name(), msg);
+}
+
+inline bool spdlog::logger::_should_flush_on(const details::log_msg &msg)
+{
+    const auto flush_level = _flush_level.load(std::memory_order_relaxed);
+    return (msg.level >= flush_level) && (msg.level != level::off);
+}
+
+inline void spdlog::logger::_incr_msg_counter(details::log_msg &msg)
+{
+    msg.msg_id = _msg_counter.fetch_add(1, std::memory_order_relaxed);
+}
+
+inline const std::vector<spdlog::sink_ptr> &spdlog::logger::sinks() const
+{
+    return _sinks;
+}

include/spdlog/details/mpmc_blocking_q.h

@@ -1,177 +1,84 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
 #pragma once
 
-// multi producer-multi consumer blocking queue.
-// enqueue(..) - will block until room found to put the new message.
-// enqueue_nowait(..) - will return immediately with false if no room left in
-// the queue.
-// dequeue_for(..) - will block until the queue is not empty or timeout have
-// passed.
+//
+// Copyright(c) 2018 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+// async log helper :
+// multi producer-multi consumer blocking queue
+// enqueue(..) - will block until room found to put the new message
+// enqueue_nowait(..) - will return immediatly with false if no room left in the queue
+// dequeue_for(..) - will block until the queue is not empty or timeout passed
 
-#include <atomic>
 #include <condition_variable>
 #include <mutex>
-
-#include "./circular_q.h"
+#include <queue>
 
 namespace spdlog {
 namespace details {
 
-template <typename T>
-class mpmc_blocking_queue {
+template<typename T>
+class mpmc_bounded_queue
+{
 public:
     using item_type = T;
-    explicit mpmc_blocking_queue(size_t max_items)
-        : q_(max_items) {}
+    explicit mpmc_bounded_queue(size_t max_items)
+        : max_items_(max_items)
+    {
+    }
 
-#ifndef __MINGW32__
     // try to enqueue and block if no room left
-    void enqueue(T &&item) {
+    void enqueue(T &&item)
+    {
         {
             std::unique_lock<std::mutex> lock(queue_mutex_);
-            pop_cv_.wait(lock, [this] { return !this->q_.full(); });
-            q_.push_back(std::move(item));
+            pop_cv_.wait(lock, [this] { return this->q_.size() < this->max_items_; });
+            q_.push(std::move(item));
         }
         push_cv_.notify_one();
     }
 
-    // enqueue immediately. overrun the oldest message in the queue if no room left.
-    void enqueue_nowait(T &&item) {
+    // try to enqueue and return immdeialty false if no room left
+    bool enqueue_nowait(T &&item)
+    {
         {
             std::unique_lock<std::mutex> lock(queue_mutex_);
-            q_.push_back(std::move(item));
-        }
-        push_cv_.notify_one();
-    }
-
-    void enqueue_if_have_room(T &&item) {
-        bool pushed = false;
+            if (q_.size() == this->max_items_)
             {
-            std::unique_lock<std::mutex> lock(queue_mutex_);
-            if (!q_.full()) {
-                q_.push_back(std::move(item));
-                pushed = true;
-            }
-        }
-
-        if (pushed) {
-            push_cv_.notify_one();
-        } else {
-            ++discard_counter_;
-        }
-    }
-
-    // dequeue with a timeout.
-    // Return true, if succeeded dequeue item, false otherwise
-    bool dequeue_for(T &popped_item, std::chrono::milliseconds wait_duration) {
-        {
-            std::unique_lock<std::mutex> lock(queue_mutex_);
-            if (!push_cv_.wait_for(lock, wait_duration, [this] { return !this->q_.empty(); })) {
                 return false;
             }
+            q_.push(std::forward<T>(item));
+        }
+        push_cv_.notify_one();
+        return true;
+    }
+
+    // try to dequeue item. if no item found. wait upto timeout and try again
+    // Return true, if succeeded dequeue item, false otherwise
+    bool dequeue_for(T &popped_item, std::chrono::milliseconds wait_duration)
+    {
+        {
+            std::unique_lock<std::mutex> lock(queue_mutex_);
+            if (!push_cv_.wait_for(lock, wait_duration, [this] { return this->q_.size() > 0; }))
+            {
+                return false;
+            }
+
             popped_item = std::move(q_.front());
-            q_.pop_front();
+            q_.pop();
         }
         pop_cv_.notify_one();
         return true;
     }
 
-    // blocking dequeue without a timeout.
-    void dequeue(T &popped_item) {
-        {
-            std::unique_lock<std::mutex> lock(queue_mutex_);
-            push_cv_.wait(lock, [this] { return !this->q_.empty(); });
-            popped_item = std::move(q_.front());
-            q_.pop_front();
-        }
-        pop_cv_.notify_one();
-    }
-
-#else
-    // apparently mingw deadlocks if the mutex is released before cv.notify_one(),
-    // so release the mutex at the very end each function.
-
-    // try to enqueue and block if no room left
-    void enqueue(T &&item) {
-        std::unique_lock<std::mutex> lock(queue_mutex_);
-        pop_cv_.wait(lock, [this] { return !this->q_.full(); });
-        q_.push_back(std::move(item));
-        push_cv_.notify_one();
-    }
-
-    // enqueue immediately. overrun oldest message in the queue if no room left.
-    void enqueue_nowait(T &&item) {
-        std::unique_lock<std::mutex> lock(queue_mutex_);
-        q_.push_back(std::move(item));
-        push_cv_.notify_one();
-    }
-
-    void enqueue_if_have_room(T &&item) {
-        bool pushed = false;
-        std::unique_lock<std::mutex> lock(queue_mutex_);
-        if (!q_.full()) {
-            q_.push_back(std::move(item));
-            pushed = true;
-        }
-
-        if (pushed) {
-            push_cv_.notify_one();
-        } else {
-            ++discard_counter_;
-        }
-    }
-
-    // dequeue with a timeout.
-    // Return true, if succeeded dequeue item, false otherwise
-    bool dequeue_for(T &popped_item, std::chrono::milliseconds wait_duration) {
-        std::unique_lock<std::mutex> lock(queue_mutex_);
-        if (!push_cv_.wait_for(lock, wait_duration, [this] { return !this->q_.empty(); })) {
-            return false;
-        }
-        popped_item = std::move(q_.front());
-        q_.pop_front();
-        pop_cv_.notify_one();
-        return true;
-    }
-
-    // blocking dequeue without a timeout.
-    void dequeue(T &popped_item) {
-        std::unique_lock<std::mutex> lock(queue_mutex_);
-        push_cv_.wait(lock, [this] { return !this->q_.empty(); });
-        popped_item = std::move(q_.front());
-        q_.pop_front();
-        pop_cv_.notify_one();
-    }
-
-#endif
-
-    size_t overrun_counter() {
-        std::lock_guard<std::mutex> lock(queue_mutex_);
-        return q_.overrun_counter();
-    }
-
-    size_t discard_counter() { return discard_counter_.load(std::memory_order_relaxed); }
-
-    size_t size() {
-        std::lock_guard<std::mutex> lock(queue_mutex_);
-        return q_.size();
-    }
-
-    void reset_overrun_counter() {
-        std::lock_guard<std::mutex> lock(queue_mutex_);
-        q_.reset_overrun_counter();
-    }
-
-    void reset_discard_counter() { discard_counter_.store(0, std::memory_order_relaxed); }
-
 private:
+    size_t max_items_;
     std::mutex queue_mutex_;
     std::condition_variable push_cv_;
     std::condition_variable pop_cv_;
-    spdlog::details::circular_q<T> q_;
-    std::atomic<size_t> discard_counter_{0};
+
+    std::queue<T> q_;
 };
 } // namespace details
 } // namespace spdlog

include/spdlog/details/null_mutex.h

@@ -1,35 +1,43 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
+//
+// Copyright(c) 2015 Gabi Melman.
 // Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
 
 #pragma once
 
 #include <atomic>
-#include <utility>
+// null, no cost dummy "mutex" and dummy "atomic" int
 
-// null, no cost dummy "mutex" and dummy "atomic" log level
 namespace spdlog {
 namespace details {
-struct null_mutex {
-    void lock() const {}
-    void unlock() const {}
+struct null_mutex
+{
+    void lock() {}
+    void unlock() {}
+    bool try_lock()
+    {
+        return true;
+    }
 };
 
-template <typename T>
-struct null_atomic {
-    T value;
+struct null_atomic_int
+{
+    int value;
+    null_atomic_int() = default;
 
-    null_atomic() = default;
+    explicit null_atomic_int(int val)
+        : value(val)
+    {
+    }
 
-    explicit constexpr null_atomic(T new_value)
-        : value(new_value) {}
+    int load(std::memory_order) const
+    {
+        return value;
+    }
 
-    [[nodiscard]] T load(std::memory_order = std::memory_order_seq_cst) const { return value; }
-
-    void store(T new_value, std::memory_order = std::memory_order_seq_cst) { value = new_value; }
-
-    T exchange(T new_value, std::memory_order = std::memory_order_seq_cst) {
-        std::swap(new_value, value);
-        return new_value;  // return value before the call
+    void store(int val)
+    {
+        value = val;
     }
 };
 

include/spdlog/details/os.h

@@ -1,128 +1,479 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
+//
+// Copyright(c) 2015 Gabi Melman.
 // Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
+//
 #pragma once
 
-#include <ctime>  // std::time_t
-#include <tuple>
-
 #include "../common.h"
-#include "../filename_t.h"
+
+#include <algorithm>
+#include <chrono>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <ctime>
+#include <functional>
+#include <string>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <thread>
+
+#ifdef _WIN32
+
+#ifndef NOMINMAX
+#define NOMINMAX // prevent windows redefining min/max
+#endif
+
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#include <io.h>      // _get_osfhandle and _isatty support
+#include <process.h> //  _get_pid support
+#include <windows.h>
+
+#ifdef __MINGW32__
+#include <share.h>
+#endif
+
+#else // unix
+
+#include <fcntl.h>
+#include <unistd.h>
+
+#ifdef __linux__
+#include <sys/syscall.h> //Use gettid() syscall under linux to get thread id
+
+#elif __FreeBSD__
+#include <sys/thr.h> //Use thr_self() syscall under FreeBSD to get thread id
+#endif
+
+#endif // unix
+
+#ifndef __has_feature      // Clang - feature checking macros.
+#define __has_feature(x) 0 // Compatibility with non-clang compilers.
+#endif
 
 namespace spdlog {
 namespace details {
 namespace os {
 
-SPDLOG_API spdlog::log_clock::time_point now() noexcept;
+inline spdlog::log_clock::time_point now()
+{
 
-SPDLOG_API std::tm localtime(const std::time_t &time_tt) noexcept;
+#if defined __linux__ && defined SPDLOG_CLOCK_COARSE
+    timespec ts;
+    ::clock_gettime(CLOCK_REALTIME_COARSE, &ts);
+    return std::chrono::time_point<log_clock, typename log_clock::duration>(
+        std::chrono::duration_cast<typename log_clock::duration>(std::chrono::seconds(ts.tv_sec) + std::chrono::nanoseconds(ts.tv_nsec)));
 
-SPDLOG_API std::tm localtime() noexcept;
-
-SPDLOG_API std::tm gmtime(const std::time_t &time_tt) noexcept;
-
-SPDLOG_API std::tm gmtime() noexcept;
-
-// eol definition and folder separator for the current os
-#ifdef _WIN32
-constexpr static const char *default_eol = "\r\n";
 #else
-constexpr static const char *default_eol = "\n";
+    return log_clock::now();
+#endif
+}
+inline std::tm localtime(const std::time_t &time_tt)
+{
+
+#ifdef _WIN32
+    std::tm tm;
+    localtime_s(&tm, &time_tt);
+#else
+    std::tm tm;
+    localtime_r(&time_tt, &tm);
+#endif
+    return tm;
+}
+
+inline std::tm localtime()
+{
+    std::time_t now_t = time(nullptr);
+    return localtime(now_t);
+}
+
+inline std::tm gmtime(const std::time_t &time_tt)
+{
+
+#ifdef _WIN32
+    std::tm tm;
+    gmtime_s(&tm, &time_tt);
+#else
+    std::tm tm;
+    gmtime_r(&time_tt, &tm);
+#endif
+    return tm;
+}
+
+inline std::tm gmtime()
+{
+    std::time_t now_t = time(nullptr);
+    return gmtime(now_t);
+}
+inline bool operator==(const std::tm &tm1, const std::tm &tm2)
+{
+    return (tm1.tm_sec == tm2.tm_sec && tm1.tm_min == tm2.tm_min && tm1.tm_hour == tm2.tm_hour && tm1.tm_mday == tm2.tm_mday &&
+            tm1.tm_mon == tm2.tm_mon && tm1.tm_year == tm2.tm_year && tm1.tm_isdst == tm2.tm_isdst);
+}
+
+inline bool operator!=(const std::tm &tm1, const std::tm &tm2)
+{
+    return !(tm1 == tm2);
+}
+
+// eol definition
+#if !defined(SPDLOG_EOL)
+#ifdef _WIN32
+#define SPDLOG_EOL "\r\n"
+#else
+#define SPDLOG_EOL "\n"
+#endif
 #endif
 
+SPDLOG_CONSTEXPR static const char *default_eol = SPDLOG_EOL;
+
+// folder separator
+#ifdef _WIN32
+SPDLOG_CONSTEXPR static const char folder_sep = '\\';
+#else
+SPDLOG_CONSTEXPR static const char folder_sep = '/';
+#endif
+
+inline void prevent_child_fd(FILE *f)
+{
+
+#ifdef _WIN32
+#if !defined(__cplusplus_winrt)
+    auto file_handle = (HANDLE)_get_osfhandle(_fileno(f));
+    if (!::SetHandleInformation(file_handle, HANDLE_FLAG_INHERIT, 0))
+        throw spdlog_ex("SetHandleInformation failed", errno);
+#endif
+#else
+    auto fd = fileno(f);
+    if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1)
+    {
+        throw spdlog_ex("fcntl with FD_CLOEXEC failed", errno);
+    }
+#endif
+}
+
 // fopen_s on non windows for writing
-SPDLOG_API bool fopen_s(FILE **fp, const filename_t &filename, const filename_t &mode);
+inline bool fopen_s(FILE **fp, const filename_t &filename, const filename_t &mode)
+{
+#ifdef _WIN32
+#ifdef SPDLOG_WCHAR_FILENAMES
+    *fp = _wfsopen((filename.c_str()), mode.c_str(), _SH_DENYWR);
+#else
+    *fp = _fsopen((filename.c_str()), mode.c_str(), _SH_DENYWR);
+#endif
+#else // unix
+    *fp = fopen((filename.c_str()), mode.c_str());
+#endif
+
+#ifdef SPDLOG_PREVENT_CHILD_FD
+    if (*fp != nullptr)
+    {
+        prevent_child_fd(*fp);
+    }
+#endif
+    return *fp == nullptr;
+}
+
+inline int remove(const filename_t &filename)
+{
+#if defined(_WIN32) && defined(SPDLOG_WCHAR_FILENAMES)
+    return _wremove(filename.c_str());
+#else
+    return std::remove(filename.c_str());
+#endif
+}
+
+inline int rename(const filename_t &filename1, const filename_t &filename2)
+{
+#if defined(_WIN32) && defined(SPDLOG_WCHAR_FILENAMES)
+    return _wrename(filename1.c_str(), filename2.c_str());
+#else
+    return std::rename(filename1.c_str(), filename2.c_str());
+#endif
+}
+
+// Return if file exists
+inline bool file_exists(const filename_t &filename)
+{
+#ifdef _WIN32
+#ifdef SPDLOG_WCHAR_FILENAMES
+    auto attribs = GetFileAttributesW(filename.c_str());
+#else
+    auto attribs = GetFileAttributesA(filename.c_str());
+#endif
+    return (attribs != INVALID_FILE_ATTRIBUTES && !(attribs & FILE_ATTRIBUTE_DIRECTORY));
+#else // common linux/unix all have the stat system call
+    struct stat buffer;
+    return (stat(filename.c_str(), &buffer) == 0);
+#endif
+}
 
 // Return file size according to open FILE* object
-SPDLOG_API size_t filesize(FILE *f);
+inline size_t filesize(FILE *f)
+{
+    if (f == nullptr)
+    {
+        throw spdlog_ex("Failed getting file size. fd is null");
+    }
+#if defined(_WIN32) && !defined(__CYGWIN__)
+    int fd = _fileno(f);
+#if _WIN64 // 64 bits
+    struct _stat64 st;
+    if (_fstat64(fd, &st) == 0)
+    {
+        return st.st_size;
+    }
+
+#else // windows 32 bits
+    long ret = _filelength(fd);
+    if (ret >= 0)
+    {
+        return static_cast<size_t>(ret);
+    }
+#endif
+
+#else // unix
+    int fd = fileno(f);
+    // 64 bits(but not in osx or cygwin, where fstat64 is deprecated)
+#if !defined(__FreeBSD__) && !defined(__APPLE__) && (defined(__x86_64__) || defined(__ppc64__)) && !defined(__CYGWIN__)
+    struct stat64 st;
+    if (fstat64(fd, &st) == 0)
+    {
+        return static_cast<size_t>(st.st_size);
+    }
+#else // unix 32 bits or cygwin
+    struct stat st;
+
+    if (fstat(fd, &st) == 0)
+    {
+        return static_cast<size_t>(st.st_size);
+    }
+#endif
+#endif
+    throw spdlog_ex("Failed getting file size from fd", errno);
+}
 
 // Return utc offset in minutes or throw spdlog_ex on failure
-SPDLOG_API int utc_minutes_offset(const std::tm &tm = details::os::localtime());
+inline int utc_minutes_offset(const std::tm &tm = details::os::localtime())
+{
+
+#ifdef _WIN32
+#if _WIN32_WINNT < _WIN32_WINNT_WS08
+    TIME_ZONE_INFORMATION tzinfo;
+    auto rv = GetTimeZoneInformation(&tzinfo);
+#else
+    DYNAMIC_TIME_ZONE_INFORMATION tzinfo;
+    auto rv = GetDynamicTimeZoneInformation(&tzinfo);
+#endif
+    if (rv == TIME_ZONE_ID_INVALID)
+        throw spdlog::spdlog_ex("Failed getting timezone info. ", errno);
+
+    int offset = -tzinfo.Bias;
+    if (tm.tm_isdst)
+    {
+        offset -= tzinfo.DaylightBias;
+    }
+    else
+    {
+        offset -= tzinfo.StandardBias;
+    }
+    return offset;
+#else
+
+#if defined(sun) || defined(__sun)
+    // 'tm_gmtoff' field is BSD extension and it's missing on SunOS/Solaris
+    struct helper
+    {
+        static long int calculate_gmt_offset(const std::tm &localtm = details::os::localtime(), const std::tm &gmtm = details::os::gmtime())
+        {
+            int local_year = localtm.tm_year + (1900 - 1);
+            int gmt_year = gmtm.tm_year + (1900 - 1);
+
+            long int days = (
+                // difference in day of year
+                localtm.tm_yday -
+                gmtm.tm_yday
+
+                // + intervening leap days
+                + ((local_year >> 2) - (gmt_year >> 2)) - (local_year / 100 - gmt_year / 100) +
+                ((local_year / 100 >> 2) - (gmt_year / 100 >> 2))
+
+                // + difference in years * 365 */
+                + (long int)(local_year - gmt_year) * 365);
+
+            long int hours = (24 * days) + (localtm.tm_hour - gmtm.tm_hour);
+            long int mins = (60 * hours) + (localtm.tm_min - gmtm.tm_min);
+            long int secs = (60 * mins) + (localtm.tm_sec - gmtm.tm_sec);
+
+            return secs;
+        }
+    };
+
+    auto offset_seconds = helper::calculate_gmt_offset(tm);
+#else
+    auto offset_seconds = tm.tm_gmtoff;
+#endif
+
+    return static_cast<int>(offset_seconds / 60);
+#endif
+}
 
 // Return current thread id as size_t
-// It exists because the std::this_thread::get_id() is much slower(especially
-// under VS 2013)
-SPDLOG_API size_t _thread_id() noexcept;
+// It exists because the std::this_thread::get_id() is much slower(especially under VS 2013)
+inline size_t _thread_id()
+{
+#ifdef _WIN32
+    return static_cast<size_t>(::GetCurrentThreadId());
+#elif __linux__
+#if defined(__ANDROID__) && defined(__ANDROID_API__) && (__ANDROID_API__ < 21)
+#define SYS_gettid __NR_gettid
+#endif
+    return static_cast<size_t>(syscall(SYS_gettid));
+#elif __FreeBSD__
+    long tid;
+    thr_self(&tid);
+    return static_cast<size_t>(tid);
+#elif __APPLE__
+    uint64_t tid;
+    pthread_threadid_np(nullptr, &tid);
+    return static_cast<size_t>(tid);
+#else // Default to standard C++11 (other Unix)
+    return static_cast<size_t>(std::hash<std::thread::id>()(std::this_thread::get_id()));
+#endif
+}
 
 // Return current thread id as size_t (from thread local storage)
-SPDLOG_API size_t thread_id() noexcept;
+inline size_t thread_id()
+{
+#if defined(SPDLOG_DISABLE_TID_CACHING) || (defined(_MSC_VER) && (_MSC_VER < 1900)) || defined(__cplusplus_winrt) ||                       \
+    (defined(__clang__) && !__has_feature(cxx_thread_local))
+    return _thread_id();
+#else // cache thread id in tls
+    static thread_local const size_t tid = _thread_id();
+    return tid;
+#endif
+}
 
 // This is avoid msvc issue in sleep_for that happens if the clock changes.
 // See https://github.com/gabime/spdlog/issues/609
-SPDLOG_API void sleep_for_millis(unsigned int milliseconds) noexcept;
+inline void sleep_for_millis(int milliseconds)
+{
+#if defined(_WIN32)
+    ::Sleep(milliseconds);
+#else
+    std::this_thread::sleep_for(std::chrono::milliseconds(milliseconds));
+#endif
+}
 
-// Return pid
-SPDLOG_API int pid() noexcept;
+// wchar support for windows file names (SPDLOG_WCHAR_FILENAMES must be defined)
+#if defined(_WIN32) && defined(SPDLOG_WCHAR_FILENAMES)
+#define SPDLOG_FILENAME_T(s) L##s
+inline std::string filename_to_str(const filename_t &filename)
+{
+    std::wstring_convert<std::codecvt_utf8<wchar_t>, wchar_t> c;
+    return c.to_bytes(filename);
+}
+#else
+#define SPDLOG_FILENAME_T(s) s
+inline std::string filename_to_str(const filename_t &filename)
+{
+    return filename;
+}
+#endif
+
+inline std::string errno_to_string(char[256], char *res)
+{
+    return std::string(res);
+}
+
+inline std::string errno_to_string(char buf[256], int res)
+{
+    if (res == 0)
+    {
+        return std::string(buf);
+    }
+    return "Unknown error";
+}
+
+// Return errno string (thread safe)
+inline std::string errno_str(int err_num)
+{
+    char buf[256];
+    SPDLOG_CONSTEXPR auto buf_size = sizeof(buf);
+
+#ifdef _WIN32
+    if (strerror_s(buf, buf_size, err_num) == 0)
+    {
+        return std::string(buf);
+    }
+    else
+    {
+        return "Unknown error";
+    }
+
+#elif defined(__FreeBSD__) || defined(__APPLE__) || defined(ANDROID) || defined(__SUNPRO_CC) ||                                            \
+    ((_POSIX_C_SOURCE >= 200112L) && !defined(_GNU_SOURCE)) // posix version
+
+    if (strerror_r(err_num, buf, buf_size) == 0)
+    {
+        return std::string(buf);
+    }
+    else
+    {
+        return "Unknown error";
+    }
+
+#else // gnu version (might not use the given buf, so its retval pointer must be used)
+    auto err = strerror_r(err_num, buf, buf_size); // let compiler choose type
+    return errno_to_string(buf, err);              // use overloading to select correct stringify function
+#endif
+}
+
+inline int pid()
+{
+
+#ifdef _WIN32
+    return static_cast<int>(::GetCurrentProcessId());
+#else
+    return static_cast<int>(::getpid());
+#endif
+}
 
 // Determine if the terminal supports colors
 // Source: https://github.com/agauniyal/rang/
-SPDLOG_API bool is_color_terminal() noexcept;
+inline bool is_color_terminal()
+{
+#ifdef _WIN32
+    return true;
+#else
+    static constexpr const char *Terms[] = {
+        "ansi", "color", "console", "cygwin", "gnome", "konsole", "kterm", "linux", "msys", "putty", "rxvt", "screen", "vt100", "xterm"};
 
-// Determine if the terminal attached
-// Source: https://github.com/agauniyal/rang/
-SPDLOG_API bool in_terminal(FILE *file) noexcept;
+    const char *env_p = std::getenv("TERM");
+    if (env_p == nullptr)
+    {
+        return false;
+    }
 
-#if (defined _WIN32)
-SPDLOG_API void wstr_to_utf8buf(wstring_view_t wstr, memory_buf_t &target);
-SPDLOG_API void utf8_to_wstrbuf(string_view_t str, wmemory_buf_t &target);
+    static const bool result =
+        std::any_of(std::begin(Terms), std::end(Terms), [&](const char *term) { return std::strstr(env_p, term) != nullptr; });
+    return result;
 #endif
+}
 
-// non thread safe, cross platform getenv/getenv_s
-// return empty string if field not found
-SPDLOG_API std::string getenv(const char *field);
-
-// Do fsync by FILE objectpointer.
-// Return true on success.
-SPDLOG_API bool fsync(FILE *fp);
-
-// Do non-locking fwrite if possible by the os or use the regular locking fwrite
-// Return true on success.
-SPDLOG_API bool fwrite_bytes(const void *ptr, const size_t n_bytes, FILE *fp);
-
-//
-// std::filesystem wrapper functions
-//
-
-// Return directory name from given path or empty string
-// "abc/file" => "abc"
-// "abc/" => "abc"
-// "abc" => ""
-SPDLOG_API filename_t dir_name(const filename_t &path);
-
-// Create a dir from the given path.
-// Return true if succeeded or if this dir already exists.
-SPDLOG_API bool create_dir(const filename_t &path);
-
-// Remove filename. return true on success
-SPDLOG_API bool remove(const filename_t &filename);
-
-// Remove file if exists. return 0 on success
-// Note: Non atomic (might return failure to delete if concurrently deleted by other process/thread)
-SPDLOG_API bool remove_if_exists(const filename_t &filename);
-
-// Rename file. return true on success
-SPDLOG_API bool rename(const filename_t &filename1, const filename_t &filename2) noexcept;
-
-// Return if file exists.
-SPDLOG_API bool path_exists(const filename_t &filename) noexcept;
-
-// Return file path and its extension:
-//
-// "mylog.txt" => ("mylog", ".txt")
-// "mylog" => ("mylog", "")
-// "mylog." => ("mylog.", "")
-// "/dir1/dir2/mylog.txt" => ("/dir1/dir2/mylog", ".txt")
-//
-// the starting dot in filenames is ignored (hidden files):
-//
-// ".mylog" => (".mylog". "")
-// "my_folder/.mylog" => ("my_folder/.mylog", "")
-// "my_folder/.mylog.txt" => ("my_folder/.mylog", ".txt")
-SPDLOG_API std::tuple<filename_t, filename_t> split_by_extension(const filename_t &fname);
-
-// Try tp convert filename to string. Return "??" if failed
-SPDLOG_API std::string filename_to_str(const filename_t &filename);
+// Detrmine if the terminal attached
+// Source: https://github.com/agauniyal/rang/
+inline bool in_terminal(FILE *file)
+{
 
+#ifdef _WIN32
+    return _isatty(_fileno(file)) != 0;
+#else
+    return isatty(fileno(file)) != 0;
+#endif
+}
 } // namespace os
 } // namespace details
 } // namespace spdlog

include/spdlog/details/pattern_formatter_impl.h

@@ -0,0 +1,707 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#pragma once
+
+#include "../details/log_msg.h"
+#include "../details/os.h"
+#include "../fmt/fmt.h"
+#include "../formatter.h"
+
+#include <array>
+#include <chrono>
+#include <ctime>
+#include <memory>
+#include <mutex>
+#include <string>
+#include <thread>
+#include <utility>
+#include <vector>
+
+namespace spdlog {
+namespace details {
+class flag_formatter
+{
+public:
+    virtual ~flag_formatter() = default;
+    virtual void format(details::log_msg &msg, const std::tm &tm_time) = 0;
+};
+
+///////////////////////////////////////////////////////////////////////
+// name & level pattern appenders
+///////////////////////////////////////////////////////////////////////
+class name_formatter : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &) override
+    {
+        msg.formatted << *msg.logger_name;
+    }
+};
+
+// log level appender
+class level_formatter : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &) override
+    {
+        msg.formatted << level::to_str(msg.level);
+    }
+};
+
+// short log level appender
+class short_level_formatter : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &) override
+    {
+        msg.formatted << level::to_short_str(msg.level);
+    }
+};
+
+///////////////////////////////////////////////////////////////////////
+// Date time pattern appenders
+///////////////////////////////////////////////////////////////////////
+
+static const char *ampm(const tm &t)
+{
+    return t.tm_hour >= 12 ? "PM" : "AM";
+}
+
+static int to12h(const tm &t)
+{
+    return t.tm_hour > 12 ? t.tm_hour - 12 : t.tm_hour;
+}
+
+// Abbreviated weekday name
+static const std::string days[]{"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
+class a_formatter : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &tm_time) override
+    {
+        msg.formatted << days[tm_time.tm_wday];
+    }
+};
+
+// Full weekday name
+static const std::string full_days[]{"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};
+class A_formatter : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &tm_time) override
+    {
+        msg.formatted << full_days[tm_time.tm_wday];
+    }
+};
+
+// Abbreviated month
+static const std::string months[]{"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sept", "Oct", "Nov", "Dec"};
+class b_formatter : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &tm_time) override
+    {
+        msg.formatted << months[tm_time.tm_mon];
+    }
+};
+
+// Full month name
+static const std::string full_months[]{
+    "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"};
+class B_formatter : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &tm_time) override
+    {
+        msg.formatted << full_months[tm_time.tm_mon];
+    }
+};
+
+// write 2 ints separated by sep with padding of 2
+static fmt::MemoryWriter &pad_n_join(fmt::MemoryWriter &w, int v1, int v2, char sep)
+{
+    w << fmt::pad(v1, 2, '0') << sep << fmt::pad(v2, 2, '0');
+    return w;
+}
+
+// write 3 ints separated by sep with padding of 2
+static fmt::MemoryWriter &pad_n_join(fmt::MemoryWriter &w, int v1, int v2, int v3, char sep)
+{
+    w << fmt::pad(v1, 2, '0') << sep << fmt::pad(v2, 2, '0') << sep << fmt::pad(v3, 2, '0');
+    return w;
+}
+
+// Date and time representation (Thu Aug 23 15:35:46 2014)
+class c_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &tm_time) override
+    {
+        msg.formatted << days[tm_time.tm_wday] << ' ' << months[tm_time.tm_mon] << ' ' << tm_time.tm_mday << ' ';
+        pad_n_join(msg.formatted, tm_time.tm_hour, tm_time.tm_min, tm_time.tm_sec, ':') << ' ' << tm_time.tm_year + 1900;
+    }
+};
+
+// year - 2 digit
+class C_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &tm_time) override
+    {
+        msg.formatted << fmt::pad(tm_time.tm_year % 100, 2, '0');
+    }
+};
+
+// Short MM/DD/YY date, equivalent to %m/%d/%y 08/23/01
+class D_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &tm_time) override
+    {
+        pad_n_join(msg.formatted, tm_time.tm_mon + 1, tm_time.tm_mday, tm_time.tm_year % 100, '/');
+    }
+};
+
+// year - 4 digit
+class Y_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &tm_time) override
+    {
+        msg.formatted << tm_time.tm_year + 1900;
+    }
+};
+
+// month 1-12
+class m_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &tm_time) override
+    {
+        msg.formatted << fmt::pad(tm_time.tm_mon + 1, 2, '0');
+    }
+};
+
+// day of month 1-31
+class d_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &tm_time) override
+    {
+        msg.formatted << fmt::pad(tm_time.tm_mday, 2, '0');
+    }
+};
+
+// hours in 24 format 0-23
+class H_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &tm_time) override
+    {
+        msg.formatted << fmt::pad(tm_time.tm_hour, 2, '0');
+    }
+};
+
+// hours in 12 format 1-12
+class I_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &tm_time) override
+    {
+        msg.formatted << fmt::pad(to12h(tm_time), 2, '0');
+    }
+};
+
+// minutes 0-59
+class M_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &tm_time) override
+    {
+        msg.formatted << fmt::pad(tm_time.tm_min, 2, '0');
+    }
+};
+
+// seconds 0-59
+class S_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &tm_time) override
+    {
+        msg.formatted << fmt::pad(tm_time.tm_sec, 2, '0');
+    }
+};
+
+// milliseconds
+class e_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &) override
+    {
+        auto duration = msg.time.time_since_epoch();
+        auto millis = std::chrono::duration_cast<std::chrono::milliseconds>(duration).count() % 1000;
+        msg.formatted << fmt::pad(static_cast<int>(millis), 3, '0');
+    }
+};
+
+// microseconds
+class f_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &) override
+    {
+        auto duration = msg.time.time_since_epoch();
+        auto micros = std::chrono::duration_cast<std::chrono::microseconds>(duration).count() % 1000000;
+        msg.formatted << fmt::pad(static_cast<int>(micros), 6, '0');
+    }
+};
+
+// nanoseconds
+class F_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &) override
+    {
+        auto duration = msg.time.time_since_epoch();
+        auto ns = std::chrono::duration_cast<std::chrono::nanoseconds>(duration).count() % 1000000000;
+        msg.formatted << fmt::pad(static_cast<int>(ns), 9, '0');
+    }
+};
+
+class E_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &) override
+    {
+        auto duration = msg.time.time_since_epoch();
+        auto seconds = std::chrono::duration_cast<std::chrono::seconds>(duration).count();
+        msg.formatted << seconds;
+    }
+};
+
+// AM/PM
+class p_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &tm_time) override
+    {
+        msg.formatted << ampm(tm_time);
+    }
+};
+
+// 12 hour clock 02:55:02 pm
+class r_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &tm_time) override
+    {
+        pad_n_join(msg.formatted, to12h(tm_time), tm_time.tm_min, tm_time.tm_sec, ':') << ' ' << ampm(tm_time);
+    }
+};
+
+// 24-hour HH:MM time, equivalent to %H:%M
+class R_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &tm_time) override
+    {
+        pad_n_join(msg.formatted, tm_time.tm_hour, tm_time.tm_min, ':');
+    }
+};
+
+// ISO 8601 time format (HH:MM:SS), equivalent to %H:%M:%S
+class T_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &tm_time) override
+    {
+        pad_n_join(msg.formatted, tm_time.tm_hour, tm_time.tm_min, tm_time.tm_sec, ':');
+    }
+};
+
+// ISO 8601 offset from UTC in timezone (+-HH:MM)
+class z_formatter SPDLOG_FINAL : public flag_formatter
+{
+public:
+    const std::chrono::seconds cache_refresh = std::chrono::seconds(5);
+
+    z_formatter() = default;
+    z_formatter(const z_formatter &) = delete;
+    z_formatter &operator=(const z_formatter &) = delete;
+
+    void format(details::log_msg &msg, const std::tm &tm_time) override
+    {
+#ifdef _WIN32
+        int total_minutes = get_cached_offset(msg, tm_time);
+#else
+        // No need to chache under gcc,
+        // it is very fast (already stored in tm.tm_gmtoff)
+        int total_minutes = os::utc_minutes_offset(tm_time);
+#endif
+        bool is_negative = total_minutes < 0;
+        char sign;
+        if (is_negative)
+        {
+            total_minutes = -total_minutes;
+            sign = '-';
+        }
+        else
+        {
+            sign = '+';
+        }
+
+        int h = total_minutes / 60;
+        int m = total_minutes % 60;
+        msg.formatted << sign;
+        pad_n_join(msg.formatted, h, m, ':');
+    }
+
+private:
+    log_clock::time_point _last_update{std::chrono::seconds(0)};
+    int _offset_minutes{0};
+    std::mutex _mutex;
+
+    int get_cached_offset(const log_msg &msg, const std::tm &tm_time)
+    {
+        std::lock_guard<std::mutex> l(_mutex);
+        if (msg.time - _last_update >= cache_refresh)
+        {
+            _offset_minutes = os::utc_minutes_offset(tm_time);
+            _last_update = msg.time;
+        }
+        return _offset_minutes;
+    }
+};
+
+// Thread id
+class t_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &) override
+    {
+        msg.formatted << msg.thread_id;
+    }
+};
+
+// Current pid
+class pid_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &) override
+    {
+        msg.formatted << details::os::pid();
+    }
+};
+
+// message counter formatter
+class i_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &) override
+    {
+        msg.formatted << fmt::pad(msg.msg_id, 6, '0');
+    }
+};
+
+class v_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &) override
+    {
+        msg.formatted << fmt::StringRef(msg.raw.data(), msg.raw.size());
+    }
+};
+
+class ch_formatter SPDLOG_FINAL : public flag_formatter
+{
+public:
+    explicit ch_formatter(char ch)
+        : _ch(ch)
+    {
+    }
+    void format(details::log_msg &msg, const std::tm &) override
+    {
+        msg.formatted << _ch;
+    }
+
+private:
+    char _ch;
+};
+
+// aggregate user chars to display as is
+class aggregate_formatter SPDLOG_FINAL : public flag_formatter
+{
+public:
+    aggregate_formatter() = default;
+
+    void add_ch(char ch)
+    {
+        _str += ch;
+    }
+    void format(details::log_msg &msg, const std::tm &) override
+    {
+        msg.formatted << _str;
+    }
+
+private:
+    std::string _str;
+};
+
+// mark the color range. expect it to be in the form of "%^colored text%$"
+class color_start_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &) override
+    {
+        msg.color_range_start = msg.formatted.size();
+    }
+};
+class color_stop_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &) override
+    {
+        msg.color_range_end = msg.formatted.size();
+    }
+};
+
+// Full info formatter
+// pattern: [%Y-%m-%d %H:%M:%S.%e] [%n] [%l] %v
+class full_formatter SPDLOG_FINAL : public flag_formatter
+{
+    void format(details::log_msg &msg, const std::tm &tm_time) override
+    {
+#ifndef SPDLOG_NO_DATETIME
+        auto duration = msg.time.time_since_epoch();
+        auto millis = std::chrono::duration_cast<std::chrono::milliseconds>(duration).count() % 1000;
+
+        /* Slower version(while still very fast - about 3.2 million lines/sec under 10 threads),
+        msg.formatted.write("[{:d}-{:02d}-{:02d} {:02d}:{:02d}:{:02d}.{:03d}] [{}] [{}] {} ",
+        tm_time.tm_year + 1900,
+        tm_time.tm_mon + 1,
+        tm_time.tm_mday,
+        tm_time.tm_hour,
+        tm_time.tm_min,
+        tm_time.tm_sec,
+        static_cast<int>(millis),
+        msg.logger_name,
+        level::to_str(msg.level),
+        msg.raw.str());*/
+
+        // Faster (albeit uglier) way to format the line (5.6 million lines/sec under 10 threads)
+        msg.formatted << '[' << static_cast<unsigned int>(tm_time.tm_year + 1900) << '-'
+                      << fmt::pad(static_cast<unsigned int>(tm_time.tm_mon + 1), 2, '0') << '-'
+                      << fmt::pad(static_cast<unsigned int>(tm_time.tm_mday), 2, '0') << ' '
+                      << fmt::pad(static_cast<unsigned int>(tm_time.tm_hour), 2, '0') << ':'
+                      << fmt::pad(static_cast<unsigned int>(tm_time.tm_min), 2, '0') << ':'
+                      << fmt::pad(static_cast<unsigned int>(tm_time.tm_sec), 2, '0') << '.'
+                      << fmt::pad(static_cast<unsigned int>(millis), 3, '0') << "] ";
+
+        // no datetime needed
+#else
+        (void)tm_time;
+#endif
+
+#ifndef SPDLOG_NO_NAME
+        msg.formatted << '[' << *msg.logger_name << "] ";
+#endif
+
+        msg.formatted << '[';
+        // wrap the level name with color
+        msg.color_range_start = msg.formatted.size();
+        msg.formatted << level::to_str(msg.level);
+        msg.color_range_end = msg.formatted.size();
+        msg.formatted << "] " << fmt::StringRef(msg.raw.data(), msg.raw.size());
+    }
+};
+
+} // namespace details
+} // namespace spdlog
+///////////////////////////////////////////////////////////////////////////////
+// pattern_formatter inline impl
+///////////////////////////////////////////////////////////////////////////////
+inline spdlog::pattern_formatter::pattern_formatter(const std::string &pattern, pattern_time_type pattern_time, std::string eol)
+    : _eol(std::move(eol))
+    , _pattern_time(pattern_time)
+{
+    compile_pattern(pattern);
+}
+
+inline void spdlog::pattern_formatter::compile_pattern(const std::string &pattern)
+{
+    auto end = pattern.end();
+    std::unique_ptr<details::aggregate_formatter> user_chars;
+    for (auto it = pattern.begin(); it != end; ++it)
+    {
+        if (*it == '%')
+        {
+            if (user_chars) // append user chars found so far
+            {
+                _formatters.push_back(std::move(user_chars));
+            }
+            // if(
+            if (++it != end)
+            {
+                handle_flag(*it);
+            }
+            else
+            {
+                break;
+            }
+        }
+        else // chars not following the % sign should be displayed as is
+        {
+            if (!user_chars)
+            {
+                user_chars = std::unique_ptr<details::aggregate_formatter>(new details::aggregate_formatter());
+            }
+            user_chars->add_ch(*it);
+        }
+    }
+    if (user_chars) // append raw chars found so far
+    {
+        _formatters.push_back(std::move(user_chars));
+    }
+}
+inline void spdlog::pattern_formatter::handle_flag(char flag)
+{
+    switch (flag)
+    {
+    // logger name
+    case 'n':
+        _formatters.emplace_back(new details::name_formatter());
+        break;
+
+    case 'l':
+        _formatters.emplace_back(new details::level_formatter());
+        break;
+
+    case 'L':
+        _formatters.emplace_back(new details::short_level_formatter());
+        break;
+
+    case ('t'):
+        _formatters.emplace_back(new details::t_formatter());
+        break;
+
+    case ('v'):
+        _formatters.emplace_back(new details::v_formatter());
+        break;
+
+    case ('a'):
+        _formatters.emplace_back(new details::a_formatter());
+        break;
+
+    case ('A'):
+        _formatters.emplace_back(new details::A_formatter());
+        break;
+
+    case ('b'):
+    case ('h'):
+        _formatters.emplace_back(new details::b_formatter());
+        break;
+
+    case ('B'):
+        _formatters.emplace_back(new details::B_formatter());
+        break;
+    case ('c'):
+        _formatters.emplace_back(new details::c_formatter());
+        break;
+
+    case ('C'):
+        _formatters.emplace_back(new details::C_formatter());
+        break;
+
+    case ('Y'):
+        _formatters.emplace_back(new details::Y_formatter());
+        break;
+
+    case ('D'):
+    case ('x'):
+
+        _formatters.emplace_back(new details::D_formatter());
+        break;
+
+    case ('m'):
+        _formatters.emplace_back(new details::m_formatter());
+        break;
+
+    case ('d'):
+        _formatters.emplace_back(new details::d_formatter());
+        break;
+
+    case ('H'):
+        _formatters.emplace_back(new details::H_formatter());
+        break;
+
+    case ('I'):
+        _formatters.emplace_back(new details::I_formatter());
+        break;
+
+    case ('M'):
+        _formatters.emplace_back(new details::M_formatter());
+        break;
+
+    case ('S'):
+        _formatters.emplace_back(new details::S_formatter());
+        break;
+
+    case ('e'):
+        _formatters.emplace_back(new details::e_formatter());
+        break;
+
+    case ('f'):
+        _formatters.emplace_back(new details::f_formatter());
+        break;
+    case ('F'):
+        _formatters.emplace_back(new details::F_formatter());
+        break;
+
+    case ('E'):
+        _formatters.emplace_back(new details::E_formatter());
+        break;
+
+    case ('p'):
+        _formatters.emplace_back(new details::p_formatter());
+        break;
+
+    case ('r'):
+        _formatters.emplace_back(new details::r_formatter());
+        break;
+
+    case ('R'):
+        _formatters.emplace_back(new details::R_formatter());
+        break;
+
+    case ('T'):
+    case ('X'):
+        _formatters.emplace_back(new details::T_formatter());
+        break;
+
+    case ('z'):
+        _formatters.emplace_back(new details::z_formatter());
+        break;
+
+    case ('+'):
+        _formatters.emplace_back(new details::full_formatter());
+        break;
+
+    case ('P'):
+        _formatters.emplace_back(new details::pid_formatter());
+        break;
+
+    case ('i'):
+        _formatters.emplace_back(new details::i_formatter());
+        break;
+
+    case ('^'):
+        _formatters.emplace_back(new details::color_start_formatter());
+        break;
+
+    case ('$'):
+        _formatters.emplace_back(new details::color_stop_formatter());
+        break;
+
+    default: // Unknown flag appears as is
+        _formatters.emplace_back(new details::ch_formatter('%'));
+        _formatters.emplace_back(new details::ch_formatter(flag));
+        break;
+    }
+}
+
+inline std::tm spdlog::pattern_formatter::get_time(details::log_msg &msg)
+{
+    if (_pattern_time == pattern_time_type::local)
+    {
+        return details::os::localtime(log_clock::to_time_t(msg.time));
+    }
+    return details::os::gmtime(log_clock::to_time_t(msg.time));
+}
+
+inline void spdlog::pattern_formatter::format(details::log_msg &msg)
+{
+
+#ifndef SPDLOG_NO_DATETIME
+    auto tm_time = get_time(msg);
+#else
+    std::tm tm_time;
+#endif
+    for (auto &f : _formatters)
+    {
+        f->format(msg, tm_time);
+    }
+    // write eol
+    msg.formatted << _eol;
+}

include/spdlog/details/registry.h

@@ -0,0 +1,263 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#pragma once
+
+// Loggers registy of unique name->logger pointer
+// An attempt to create a logger with an already existing name will be ignored
+// If user requests a non existing logger, nullptr will be returned
+// This class is thread safe
+
+#include "../async_logger.h"
+#include "../common.h"
+#include "../details/null_mutex.h"
+#include "../logger.h"
+
+#include <chrono>
+#include <functional>
+#include <memory>
+#include <mutex>
+#include <string>
+#include <unordered_map>
+
+namespace spdlog {
+namespace details {
+template<class Mutex>
+class registry_t
+{
+public:
+    registry_t<Mutex>(const registry_t<Mutex> &) = delete;
+    registry_t<Mutex> &operator=(const registry_t<Mutex> &) = delete;
+
+    void register_logger(std::shared_ptr<logger> logger)
+    {
+        std::lock_guard<Mutex> lock(_mutex);
+        auto logger_name = logger->name();
+        throw_if_exists(logger_name);
+        _loggers[logger_name] = logger;
+    }
+
+    std::shared_ptr<logger> get(const std::string &logger_name)
+    {
+        std::lock_guard<Mutex> lock(_mutex);
+        auto found = _loggers.find(logger_name);
+        return found == _loggers.end() ? nullptr : found->second;
+    }
+
+    template<class It>
+    std::shared_ptr<logger> create(const std::string &logger_name, const It &sinks_begin, const It &sinks_end)
+    {
+        std::lock_guard<Mutex> lock(_mutex);
+        throw_if_exists(logger_name);
+        std::shared_ptr<logger> new_logger;
+        if (_async_mode)
+        {
+            new_logger = std::make_shared<async_logger>(logger_name, sinks_begin, sinks_end, _async_q_size, _overflow_policy,
+                _worker_warmup_cb, _flush_interval_ms, _worker_teardown_cb);
+        }
+        else
+        {
+            new_logger = std::make_shared<logger>(logger_name, sinks_begin, sinks_end);
+        }
+
+        if (_formatter)
+        {
+            new_logger->set_formatter(_formatter);
+        }
+
+        if (_err_handler)
+        {
+            new_logger->set_error_handler(_err_handler);
+        }
+
+        new_logger->set_level(_level);
+        new_logger->flush_on(_flush_level);
+
+        // Add to registry
+        _loggers[logger_name] = new_logger;
+        return new_logger;
+    }
+
+    template<class It>
+    std::shared_ptr<async_logger> create_async(const std::string &logger_name, size_t queue_size,
+        const async_overflow_policy overflow_policy, const std::function<void()> &worker_warmup_cb,
+        const std::chrono::milliseconds &flush_interval_ms, const std::function<void()> &worker_teardown_cb, const It &sinks_begin,
+        const It &sinks_end)
+    {
+        std::lock_guard<Mutex> lock(_mutex);
+        throw_if_exists(logger_name);
+        auto new_logger = std::make_shared<async_logger>(
+            logger_name, sinks_begin, sinks_end, queue_size, overflow_policy, worker_warmup_cb, flush_interval_ms, worker_teardown_cb);
+
+        if (_formatter)
+        {
+            new_logger->set_formatter(_formatter);
+        }
+
+        if (_err_handler)
+        {
+            new_logger->set_error_handler(_err_handler);
+        }
+
+        new_logger->set_level(_level);
+        new_logger->flush_on(_flush_level);
+
+        // Add to registry
+        _loggers[logger_name] = new_logger;
+        return new_logger;
+    }
+
+    void apply_all(std::function<void(std::shared_ptr<logger>)> fun)
+    {
+        std::lock_guard<Mutex> lock(_mutex);
+        for (auto &l : _loggers)
+        {
+            fun(l.second);
+        }
+    }
+
+    void drop(const std::string &logger_name)
+    {
+        std::lock_guard<Mutex> lock(_mutex);
+        _loggers.erase(logger_name);
+    }
+
+    void drop_all()
+    {
+        std::lock_guard<Mutex> lock(_mutex);
+        _loggers.clear();
+    }
+
+    std::shared_ptr<logger> create(const std::string &logger_name, sinks_init_list sinks)
+    {
+        return create(logger_name, sinks.begin(), sinks.end());
+    }
+
+    std::shared_ptr<logger> create(const std::string &logger_name, sink_ptr sink)
+    {
+        return create(logger_name, {sink});
+    }
+
+    std::shared_ptr<async_logger> create_async(const std::string &logger_name, size_t queue_size,
+        const async_overflow_policy overflow_policy, const std::function<void()> &worker_warmup_cb,
+        const std::chrono::milliseconds &flush_interval_ms, const std::function<void()> &worker_teardown_cb, sinks_init_list sinks)
+    {
+        return create_async(
+            logger_name, queue_size, overflow_policy, worker_warmup_cb, flush_interval_ms, worker_teardown_cb, sinks.begin(), sinks.end());
+    }
+
+    std::shared_ptr<async_logger> create_async(const std::string &logger_name, size_t queue_size,
+        const async_overflow_policy overflow_policy, const std::function<void()> &worker_warmup_cb,
+        const std::chrono::milliseconds &flush_interval_ms, const std::function<void()> &worker_teardown_cb, sink_ptr sink)
+    {
+        return create_async(logger_name, queue_size, overflow_policy, worker_warmup_cb, flush_interval_ms, worker_teardown_cb, {sink});
+    }
+
+    void formatter(formatter_ptr f)
+    {
+        std::lock_guard<Mutex> lock(_mutex);
+        _formatter = f;
+        for (auto &l : _loggers)
+        {
+            l.second->set_formatter(_formatter);
+        }
+    }
+
+    void set_pattern(const std::string &pattern)
+    {
+        std::lock_guard<Mutex> lock(_mutex);
+        _formatter = std::make_shared<pattern_formatter>(pattern);
+        for (auto &l : _loggers)
+        {
+            l.second->set_formatter(_formatter);
+        }
+    }
+
+    void set_level(level::level_enum log_level)
+    {
+        std::lock_guard<Mutex> lock(_mutex);
+        for (auto &l : _loggers)
+        {
+            l.second->set_level(log_level);
+        }
+        _level = log_level;
+    }
+
+    void flush_on(level::level_enum log_level)
+    {
+        std::lock_guard<Mutex> lock(_mutex);
+        for (auto &l : _loggers)
+        {
+            l.second->flush_on(log_level);
+        }
+        _flush_level = log_level;
+    }
+
+    void set_error_handler(log_err_handler handler)
+    {
+        for (auto &l : _loggers)
+        {
+            l.second->set_error_handler(handler);
+        }
+        _err_handler = handler;
+    }
+
+    void set_async_mode(size_t q_size, const async_overflow_policy overflow_policy, const std::function<void()> &worker_warmup_cb,
+        const std::chrono::milliseconds &flush_interval_ms, const std::function<void()> &worker_teardown_cb)
+    {
+        std::lock_guard<Mutex> lock(_mutex);
+        _async_mode = true;
+        _async_q_size = q_size;
+        _overflow_policy = overflow_policy;
+        _worker_warmup_cb = worker_warmup_cb;
+        _flush_interval_ms = flush_interval_ms;
+        _worker_teardown_cb = worker_teardown_cb;
+    }
+
+    void set_sync_mode()
+    {
+        std::lock_guard<Mutex> lock(_mutex);
+        _async_mode = false;
+    }
+
+    static registry_t<Mutex> &instance()
+    {
+        static registry_t<Mutex> s_instance;
+        return s_instance;
+    }
+
+private:
+    registry_t<Mutex>() = default;
+
+    void throw_if_exists(const std::string &logger_name)
+    {
+        if (_loggers.find(logger_name) != _loggers.end())
+        {
+            throw spdlog_ex("logger with name '" + logger_name + "' already exists");
+        }
+    }
+
+    Mutex _mutex;
+    std::unordered_map<std::string, std::shared_ptr<logger>> _loggers;
+    formatter_ptr _formatter;
+    level::level_enum _level = level::info;
+    level::level_enum _flush_level = level::off;
+    log_err_handler _err_handler;
+    bool _async_mode = false;
+    size_t _async_q_size = 0;
+    async_overflow_policy _overflow_policy = async_overflow_policy::block_retry;
+    std::function<void()> _worker_warmup_cb;
+    std::chrono::milliseconds _flush_interval_ms{std::chrono::milliseconds::zero()};
+    std::function<void()> _worker_teardown_cb;
+};
+
+#ifdef SPDLOG_NO_REGISTRY_MUTEX
+using registry = registry_t<spdlog::details::null_mutex>;
+#else
+using registry = registry_t<std::mutex>;
+#endif
+
+} // namespace details
+} // namespace spdlog

include/spdlog/details/spdlog_impl.h

@@ -0,0 +1,278 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#pragma once
+
+//
+// Global registry functions
+//
+#include "../details/registry.h"
+#include "../sinks/file_sinks.h"
+#include "../sinks/stdout_sinks.h"
+#include "../spdlog.h"
+#ifdef SPDLOG_ENABLE_SYSLOG
+#include "../sinks/syslog_sink.h"
+#endif
+
+#if defined _WIN32 && !defined(__cplusplus_winrt)
+#include "../sinks/wincolor_sink.h"
+#else
+#include "../sinks/ansicolor_sink.h"
+#endif
+
+#ifdef __ANDROID__
+#include "../sinks/android_sink.h"
+#endif
+
+#include <chrono>
+#include <functional>
+#include <memory>
+#include <string>
+
+inline void spdlog::register_logger(std::shared_ptr<logger> logger)
+{
+    return details::registry::instance().register_logger(std::move(logger));
+}
+
+inline std::shared_ptr<spdlog::logger> spdlog::get(const std::string &name)
+{
+    return details::registry::instance().get(name);
+}
+
+inline void spdlog::drop(const std::string &name)
+{
+    details::registry::instance().drop(name);
+}
+
+// Create multi/single threaded simple file logger
+inline std::shared_ptr<spdlog::logger> spdlog::basic_logger_mt(const std::string &logger_name, const filename_t &filename, bool truncate)
+{
+    return create<spdlog::sinks::simple_file_sink_mt>(logger_name, filename, truncate);
+}
+
+inline std::shared_ptr<spdlog::logger> spdlog::basic_logger_st(const std::string &logger_name, const filename_t &filename, bool truncate)
+{
+    return create<spdlog::sinks::simple_file_sink_st>(logger_name, filename, truncate);
+}
+
+// Create multi/single threaded rotating file logger
+inline std::shared_ptr<spdlog::logger> spdlog::rotating_logger_mt(
+    const std::string &logger_name, const filename_t &filename, size_t max_file_size, size_t max_files)
+{
+    return create<spdlog::sinks::rotating_file_sink_mt>(logger_name, filename, max_file_size, max_files);
+}
+
+inline std::shared_ptr<spdlog::logger> spdlog::rotating_logger_st(
+    const std::string &logger_name, const filename_t &filename, size_t max_file_size, size_t max_files)
+{
+    return create<spdlog::sinks::rotating_file_sink_st>(logger_name, filename, max_file_size, max_files);
+}
+
+// Create file logger which creates new file at midnight):
+inline std::shared_ptr<spdlog::logger> spdlog::daily_logger_mt(
+    const std::string &logger_name, const filename_t &filename, int hour, int minute)
+{
+    return create<spdlog::sinks::daily_file_sink_mt>(logger_name, filename, hour, minute);
+}
+
+inline std::shared_ptr<spdlog::logger> spdlog::daily_logger_st(
+    const std::string &logger_name, const filename_t &filename, int hour, int minute)
+{
+    return create<spdlog::sinks::daily_file_sink_st>(logger_name, filename, hour, minute);
+}
+
+//
+// stdout/stderr loggers
+//
+inline std::shared_ptr<spdlog::logger> spdlog::stdout_logger_mt(const std::string &logger_name)
+{
+    return spdlog::details::registry::instance().create(logger_name, spdlog::sinks::stdout_sink_mt::instance());
+}
+
+inline std::shared_ptr<spdlog::logger> spdlog::stdout_logger_st(const std::string &logger_name)
+{
+    return spdlog::details::registry::instance().create(logger_name, spdlog::sinks::stdout_sink_st::instance());
+}
+
+inline std::shared_ptr<spdlog::logger> spdlog::stderr_logger_mt(const std::string &logger_name)
+{
+    return spdlog::details::registry::instance().create(logger_name, spdlog::sinks::stderr_sink_mt::instance());
+}
+
+inline std::shared_ptr<spdlog::logger> spdlog::stderr_logger_st(const std::string &logger_name)
+{
+    return spdlog::details::registry::instance().create(logger_name, spdlog::sinks::stderr_sink_st::instance());
+}
+
+//
+// stdout/stderr color loggers
+//
+#if defined _WIN32 && !defined(__cplusplus_winrt)
+
+inline std::shared_ptr<spdlog::logger> spdlog::stdout_color_mt(const std::string &logger_name)
+{
+    auto sink = std::make_shared<spdlog::sinks::wincolor_stdout_sink_mt>();
+    return spdlog::details::registry::instance().create(logger_name, sink);
+}
+
+inline std::shared_ptr<spdlog::logger> spdlog::stdout_color_st(const std::string &logger_name)
+{
+    auto sink = std::make_shared<spdlog::sinks::wincolor_stdout_sink_st>();
+    return spdlog::details::registry::instance().create(logger_name, sink);
+}
+
+inline std::shared_ptr<spdlog::logger> spdlog::stderr_color_mt(const std::string &logger_name)
+{
+    auto sink = std::make_shared<spdlog::sinks::wincolor_stderr_sink_mt>();
+    return spdlog::details::registry::instance().create(logger_name, sink);
+}
+
+inline std::shared_ptr<spdlog::logger> spdlog::stderr_color_st(const std::string &logger_name)
+{
+    auto sink = std::make_shared<spdlog::sinks::wincolor_stderr_sink_st>();
+    return spdlog::details::registry::instance().create(logger_name, sink);
+}
+
+#else // ansi terminal colors
+
+inline std::shared_ptr<spdlog::logger> spdlog::stdout_color_mt(const std::string &logger_name)
+{
+    auto sink = std::make_shared<spdlog::sinks::ansicolor_stdout_sink_mt>();
+    return spdlog::details::registry::instance().create(logger_name, sink);
+}
+
+inline std::shared_ptr<spdlog::logger> spdlog::stdout_color_st(const std::string &logger_name)
+{
+    auto sink = std::make_shared<spdlog::sinks::ansicolor_stdout_sink_st>();
+    return spdlog::details::registry::instance().create(logger_name, sink);
+}
+
+inline std::shared_ptr<spdlog::logger> spdlog::stderr_color_mt(const std::string &logger_name)
+{
+    auto sink = std::make_shared<spdlog::sinks::ansicolor_stderr_sink_mt>();
+    return spdlog::details::registry::instance().create(logger_name, sink);
+}
+
+inline std::shared_ptr<spdlog::logger> spdlog::stderr_color_st(const std::string &logger_name)
+{
+    auto sink = std::make_shared<spdlog::sinks::ansicolor_stderr_sink_st>();
+    return spdlog::details::registry::instance().create(logger_name, sink);
+}
+#endif
+
+#ifdef SPDLOG_ENABLE_SYSLOG
+// Create syslog logger
+inline std::shared_ptr<spdlog::logger> spdlog::syslog_logger(
+    const std::string &logger_name, const std::string &syslog_ident, int syslog_option, int syslog_facility)
+{
+    return create<spdlog::sinks::syslog_sink>(logger_name, syslog_ident, syslog_option, syslog_facility);
+}
+#endif
+
+#ifdef __ANDROID__
+inline std::shared_ptr<spdlog::logger> spdlog::android_logger(const std::string &logger_name, const std::string &tag)
+{
+    return create<spdlog::sinks::android_sink>(logger_name, tag);
+}
+#endif
+
+// Create and register a logger a single sink
+inline std::shared_ptr<spdlog::logger> spdlog::create(const std::string &logger_name, const spdlog::sink_ptr &sink)
+{
+    return details::registry::instance().create(logger_name, sink);
+}
+
+// Create logger with multiple sinks
+inline std::shared_ptr<spdlog::logger> spdlog::create(const std::string &logger_name, spdlog::sinks_init_list sinks)
+{
+    return details::registry::instance().create(logger_name, sinks);
+}
+
+template<typename Sink, typename... Args>
+inline std::shared_ptr<spdlog::logger> spdlog::create(const std::string &logger_name, Args... args)
+{
+    sink_ptr sink = std::make_shared<Sink>(args...);
+    return details::registry::instance().create(logger_name, {sink});
+}
+
+template<class It>
+inline std::shared_ptr<spdlog::logger> spdlog::create(const std::string &logger_name, const It &sinks_begin, const It &sinks_end)
+{
+    return details::registry::instance().create(logger_name, sinks_begin, sinks_end);
+}
+
+// Create and register an async logger with a single sink
+inline std::shared_ptr<spdlog::logger> spdlog::create_async(const std::string &logger_name, const sink_ptr &sink, size_t queue_size,
+    const async_overflow_policy overflow_policy, const std::function<void()> &worker_warmup_cb,
+    const std::chrono::milliseconds &flush_interval_ms, const std::function<void()> &worker_teardown_cb)
+{
+    return details::registry::instance().create_async(
+        logger_name, queue_size, overflow_policy, worker_warmup_cb, flush_interval_ms, worker_teardown_cb, sink);
+}
+
+// Create and register an async logger with multiple sinks
+inline std::shared_ptr<spdlog::logger> spdlog::create_async(const std::string &logger_name, sinks_init_list sinks, size_t queue_size,
+    const async_overflow_policy overflow_policy, const std::function<void()> &worker_warmup_cb,
+    const std::chrono::milliseconds &flush_interval_ms, const std::function<void()> &worker_teardown_cb)
+{
+    return details::registry::instance().create_async(
+        logger_name, queue_size, overflow_policy, worker_warmup_cb, flush_interval_ms, worker_teardown_cb, sinks);
+}
+
+template<class It>
+inline std::shared_ptr<spdlog::logger> spdlog::create_async(const std::string &logger_name, const It &sinks_begin, const It &sinks_end,
+    size_t queue_size, const async_overflow_policy overflow_policy, const std::function<void()> &worker_warmup_cb,
+    const std::chrono::milliseconds &flush_interval_ms, const std::function<void()> &worker_teardown_cb)
+{
+    return details::registry::instance().create_async(
+        logger_name, queue_size, overflow_policy, worker_warmup_cb, flush_interval_ms, worker_teardown_cb, sinks_begin, sinks_end);
+}
+
+inline void spdlog::set_formatter(spdlog::formatter_ptr f)
+{
+    details::registry::instance().formatter(std::move(f));
+}
+
+inline void spdlog::set_pattern(const std::string &format_string)
+{
+    return details::registry::instance().set_pattern(format_string);
+}
+
+inline void spdlog::set_level(level::level_enum log_level)
+{
+    return details::registry::instance().set_level(log_level);
+}
+
+inline void spdlog::flush_on(level::level_enum log_level)
+{
+    return details::registry::instance().flush_on(log_level);
+}
+
+inline void spdlog::set_error_handler(log_err_handler handler)
+{
+    return details::registry::instance().set_error_handler(std::move(handler));
+}
+
+inline void spdlog::set_async_mode(size_t queue_size, const async_overflow_policy overflow_policy,
+    const std::function<void()> &worker_warmup_cb, const std::chrono::milliseconds &flush_interval_ms,
+    const std::function<void()> &worker_teardown_cb)
+{
+    details::registry::instance().set_async_mode(queue_size, overflow_policy, worker_warmup_cb, flush_interval_ms, worker_teardown_cb);
+}
+
+inline void spdlog::set_sync_mode()
+{
+    details::registry::instance().set_sync_mode();
+}
+
+inline void spdlog::apply_all(std::function<void(std::shared_ptr<logger>)> fun)
+{
+    details::registry::instance().apply_all(std::move(fun));
+}
+
+inline void spdlog::drop_all()
+{
+    details::registry::instance().drop_all();
+}

include/spdlog/details/tcp_client_unix.h

@@ -1,125 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#ifdef _WIN32
-    #error include tcp_client_windows.h instead
-#endif
-
-// tcp client helper
-#include <arpa/inet.h>
-#include <netdb.h>
-#include <netinet/in.h>
-#include <netinet/tcp.h>
-#include <string.h>
-#include <sys/socket.h>
-#include <unistd.h>
-
-#include <string>
-
-#include "../common.h"
-#include "./os.h"
-
-namespace spdlog {
-namespace details {
-class tcp_client_unix {
-    int socket_ = -1;
-
-public:
-    bool is_connected() const { return socket_ != -1; }
-
-    void close() {
-        if (is_connected()) {
-            ::close(socket_);
-            socket_ = -1;
-        }
-    }
-
-    int fd() const { return socket_; }
-
-    ~tcp_client_unix() { close(); }
-
-    // try to connect or throw on failure
-    void connect(const std::string &host, int port) {
-        close();
-        struct addrinfo hints {};
-        memset(&hints, 0, sizeof(struct addrinfo));
-        hints.ai_family = AF_UNSPEC;      // To work with IPv4, IPv6, and so on
-        hints.ai_socktype = SOCK_STREAM;  // TCP
-        hints.ai_flags = AI_NUMERICSERV;  // port passed as as numeric value
-        hints.ai_protocol = 0;
-
-        auto port_str = std::to_string(port);
-        struct addrinfo *addrinfo_result;
-        auto rv = ::getaddrinfo(host.c_str(), port_str.c_str(), &hints, &addrinfo_result);
-        if (rv != 0) {
-            throw_spdlog_ex(fmt_lib::format("::getaddrinfo failed: {}", gai_strerror(rv)));
-        }
-
-        // Try each address until we successfully connect(2).
-        int last_errno = 0;
-        for (auto *rp = addrinfo_result; rp != nullptr; rp = rp->ai_next) {
-#if defined(SOCK_CLOEXEC)
-            constexpr int flags = SOCK_CLOEXEC;
-#else
-            constexpr int flags = 0;
-#endif
-            socket_ = ::socket(rp->ai_family, rp->ai_socktype | flags, rp->ai_protocol);
-            if (socket_ == -1) {
-                last_errno = errno;
-                continue;
-            }
-            rv = ::connect(socket_, rp->ai_addr, rp->ai_addrlen);
-            if (rv == 0) {
-                break;
-            }
-            last_errno = errno;
-            ::close(socket_);
-            socket_ = -1;
-        }
-        ::freeaddrinfo(addrinfo_result);
-        if (socket_ == -1) {
-            throw_spdlog_ex("::connect failed", last_errno);
-        }
-
-        // set TCP_NODELAY
-        int enable_flag = 1;
-        ::setsockopt(socket_, IPPROTO_TCP, TCP_NODELAY, reinterpret_cast<char *>(&enable_flag), sizeof(enable_flag));
-
-        // prevent sigpipe on systems where MSG_NOSIGNAL is not available
-#if defined(SO_NOSIGPIPE) && !defined(MSG_NOSIGNAL)
-        ::setsockopt(socket_, SOL_SOCKET, SO_NOSIGPIPE, reinterpret_cast<char *>(&enable_flag), sizeof(enable_flag));
-#endif
-
-#if !defined(SO_NOSIGPIPE) && !defined(MSG_NOSIGNAL)
-    #error "tcp_sink would raise SIGPIPE since neither SO_NOSIGPIPE nor MSG_NOSIGNAL are available"
-#endif
-    }
-
-    // Send exactly n_bytes of the given data.
-    // On error close the connection and throw.
-    void send(const char *data, size_t n_bytes) {
-        size_t bytes_sent = 0;
-        while (bytes_sent < n_bytes) {
-#if defined(MSG_NOSIGNAL)
-            const int send_flags = MSG_NOSIGNAL;
-#else
-            const int send_flags = 0;
-#endif
-            auto write_result = ::send(socket_, data + bytes_sent, n_bytes - bytes_sent, send_flags);
-            if (write_result < 0) {
-                close();
-                throw_spdlog_ex("write(2) failed", errno);
-            }
-
-            if (write_result == 0)  // (probably should not happen but in any case..)
-            {
-                break;
-            }
-            bytes_sent += static_cast<size_t>(write_result);
-        }
-    }
-};
-}  // namespace details
-}  // namespace spdlog

include/spdlog/details/tcp_client_windows.h

@@ -1,133 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#define WIN32_LEAN_AND_MEAN
-// tcp client helper
-#include <stdio.h>
-#include <stdlib.h>
-#include <windows.h>
-#include <winsock2.h>
-#include <ws2tcpip.h>
-
-#include <string>
-
-#include "../common.h"
-#include "./os.h"
-
-#pragma comment(lib, "Ws2_32.lib")
-#pragma comment(lib, "Mswsock.lib")
-#pragma comment(lib, "AdvApi32.lib")
-
-namespace spdlog {
-namespace details {
-class tcp_client_unix {
-    SOCKET socket_ = INVALID_SOCKET;
-
-    static void init_winsock_() {
-        WSADATA wsaData;
-        auto rv = WSAStartup(MAKEWORD(2, 2), &wsaData);
-        if (rv != 0) {
-            throw_winsock_error_("WSAStartup failed", ::WSAGetLastError());
-        }
-    }
-
-    static void throw_winsock_error_(const std::string &msg, int last_error) {
-        char buf[512];
-        ::FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, last_error,
-                         MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), buf, (sizeof(buf) / sizeof(char)), NULL);
-
-        throw_spdlog_ex(fmt_lib::format("tcp_sink - {}: {}", msg, buf));
-    }
-
-public:
-    tcp_client_unix() { init_winsock_(); }
-
-    ~tcp_client_unix() {
-        close();
-        ::WSACleanup();
-    }
-
-    bool is_connected() const { return socket_ != INVALID_SOCKET; }
-
-    void close() {
-        ::closesocket(socket_);
-        socket_ = INVALID_SOCKET;
-    }
-
-    SOCKET fd() const { return socket_; }
-
-    // try to connect or throw on failure
-    void connect(const std::string &host, int port) {
-        if (is_connected()) {
-            close();
-        }
-        struct addrinfo hints {};
-        ZeroMemory(&hints, sizeof(hints));
-
-        hints.ai_family = AF_UNSPEC;      // To work with IPv4, IPv6, and so on
-        hints.ai_socktype = SOCK_STREAM;  // TCP
-        hints.ai_flags = AI_NUMERICSERV;  // port passed as as numeric value
-        hints.ai_protocol = 0;
-
-        auto port_str = std::to_string(port);
-        struct addrinfo *addrinfo_result;
-        auto rv = ::getaddrinfo(host.c_str(), port_str.c_str(), &hints, &addrinfo_result);
-        int last_error = 0;
-        if (rv != 0) {
-            last_error = ::WSAGetLastError();
-            WSACleanup();
-            throw_winsock_error_("getaddrinfo failed", last_error);
-        }
-
-        // Try each address until we successfully connect(2).
-
-        for (auto *rp = addrinfo_result; rp != nullptr; rp = rp->ai_next) {
-            socket_ = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
-            if (socket_ == INVALID_SOCKET) {
-                last_error = ::WSAGetLastError();
-                WSACleanup();
-                continue;
-            }
-            if (::connect(socket_, rp->ai_addr, (int)rp->ai_addrlen) == 0) {
-                break;
-            } else {
-                last_error = ::WSAGetLastError();
-                close();
-            }
-        }
-        ::freeaddrinfo(addrinfo_result);
-        if (socket_ == INVALID_SOCKET) {
-            WSACleanup();
-            throw_winsock_error_("connect failed", last_error);
-        }
-
-        // set TCP_NODELAY
-        int enable_flag = 1;
-        ::setsockopt(socket_, IPPROTO_TCP, TCP_NODELAY, reinterpret_cast<char *>(&enable_flag), sizeof(enable_flag));
-    }
-
-    // Send exactly n_bytes of the given data.
-    // On error close the connection and throw.
-    void send(const char *data, size_t n_bytes) {
-        size_t bytes_sent = 0;
-        while (bytes_sent < n_bytes) {
-            const int send_flags = 0;
-            auto write_result = ::send(socket_, data + bytes_sent, (int)(n_bytes - bytes_sent), send_flags);
-            if (write_result == SOCKET_ERROR) {
-                int last_error = ::WSAGetLastError();
-                close();
-                throw_winsock_error_("send failed", last_error);
-            }
-
-            if (write_result == 0)  // (probably should not happen but in any case..)
-            {
-                break;
-            }
-            bytes_sent += static_cast<size_t>(write_result);
-        }
-    }
-};
-}  // namespace details
-}  // namespace spdlog