astyle

example/utils.h

@@ -0,0 +1,54 @@
+#pragma once
+
+#include <functional>
+#include <chrono>
+#include <iostream>
+#include <sstream>
+#include <iomanip>
+#include <locale>
+
+namespace utils {
+
+template<typename T>
+std::string format(const T& value)
+{
+    static std::locale loc("");
+    std::stringstream ss;
+    ss.imbue(loc);
+    ss << value;
+    return ss.str();
+}
+
+inline void bench(const std::string& fn_name, const std::chrono::milliseconds &duration, const std::function<void() >& fn)
+{
+    using namespace std::chrono;
+    typedef steady_clock the_clock;
+    size_t counter = 0;
+    seconds print_interval(1);
+    auto start_time = the_clock::now();
+    auto lastPrintTime = start_time;
+    while (true) {
+        fn();
+        ++counter;
+        auto now = the_clock::now();
+        if (now - start_time >= duration)
+            break;
+        if (now - lastPrintTime >= print_interval) {
+            std::cout << fn_name << ": " << format(counter) << " per sec" << std::endl;
+            counter = 0;
+            lastPrintTime = the_clock::now();
+        }
+    }
+}
+
+inline void bench(const std::string& fn_name,  const std::function<void() >& fn)
+{
+
+    using namespace std::chrono;
+    auto start = steady_clock::now();
+    fn();
+    auto delta = steady_clock::now() - start;
+
+    std::cout << fn_name << ": " << duration_cast<milliseconds>(delta).count() << " ms" << std::endl;
+}
+}