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worker warmup callback

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This commit is contained in:
Denis Ivaykin
2015-01-14 09:21:34 -06:00
parent c3f8200ad5
commit d47fbbb79e
6 changed files with 27 additions and 17 deletions
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12
include/spdlog/details/async_log_helper.h
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@@ -36,6 +36,7 @@
#include <chrono>
#include <thread>
#include <atomic>
#include <functional>
#include "../common.h"
#include "../sinks/sink.h"
@@ -108,7 +109,7 @@ public:
using clock = std::chrono::steady_clock;
async_log_helper(formatter_ptr formatter, const std::vector<sink_ptr>& sinks, size_t queue_size);
async_log_helper(formatter_ptr formatter, const std::vector<sink_ptr>& sinks, size_t queue_size, const std::function<void()>& worker_warmup_cb = nullptr);
void log(const details::log_msg& msg);
//Stop logging and join the back thread
@@ -124,6 +125,9 @@ private:
// last exception thrown from the worker thread
std::shared_ptr<spdlog_ex> _last_workerthread_ex;
// worker thread warmup callback - one can set thread priority, affinity, etc
const std::function<void()> _worker_warmup_cb;
// throw last worker thread exception or if worker thread is not active
@@ -136,7 +140,7 @@ private:
//return true if a message was available (queue was not empty), will set the last_pop to the pop time
bool process_next_msg(clock::time_point& last_pop);
// guess how much to sleep if queue is empty/full using last succesful op time as hint
// guess how much to sleep if queue is empty/full using last successful op time as hint
static void sleep_or_yield(const clock::time_point& last_op_time);
};
@@ -146,10 +150,11 @@ private:
///////////////////////////////////////////////////////////////////////////////
// async_sink class implementation
///////////////////////////////////////////////////////////////////////////////
inline spdlog::details::async_log_helper::async_log_helper(formatter_ptr formatter, const std::vector<sink_ptr>& sinks, size_t queue_size):
inline spdlog::details::async_log_helper::async_log_helper(formatter_ptr formatter, const std::vector<sink_ptr>& sinks, size_t queue_size, const std::function<void()>& worker_warmup_cb):
_formatter(formatter),
_sinks(sinks),
_q(queue_size),
_worker_warmup_cb(worker_warmup_cb),
_worker_thread(&async_log_helper::worker_loop, this)
{}
@@ -189,6 +194,7 @@ inline void spdlog::details::async_log_helper::worker_loop()
{
try
{
if (_worker_warmup_cb) _worker_warmup_cb();
clock::time_point last_pop = clock::now();
while(process_next_msg(last_pop));
}