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timestamp caching of last second

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gabime
2014-02-06 00:52:58 +02:00
parent 52dc317cfb
commit 6400b1887e
1 changed files with 21 additions and 13 deletions
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34
src/formatters.cpp
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@@ -1,23 +1,31 @@
#include "stdafx.h"
#include <memory.h>
#include "c11log/formatters/formatters.h"
#include "c11log/level.h"
static thread_local std::tm last_tm;
static thread_local char timestamp_cache[64];
void c11log::formatters::format_time(const c11log::formatters::timepoint& tp, std::ostream &dest)
{
std::tm tm = details::os::localtime(std::chrono::system_clock::to_time_t(tp));
//get ms
//auto duration = tp.time_since_epoch();
//int millis = static_cast<int>(std::chrono::duration_cast<std::chrono::milliseconds>(duration).count() % 1000);
char buf[64];
auto size = sprintf(buf, "[%d-%02d-%02d %02d:%02d:%02d]",
tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
tm.tm_hour, tm.tm_min, tm.tm_sec);
dest.write(buf, size);
auto tm = details::os::localtime(std::chrono::system_clock::to_time_t(tp));
// Cache timestamp string of last second
if(memcmp(&tm, &last_tm, sizeof(tm)))
{
sprintf(timestamp_cache, "[%d-%02d-%02d %02d:%02d:%02d]", tm.tm_year + 1900,
tm.tm_mon + 1,
tm.tm_mday,
tm.tm_hour,
tm.tm_min,
tm.tm_sec);
last_tm = tm;
}
dest << timestamp_cache;
}
void c11log::formatters::format_time(std::ostream& dest)