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Logging.cpp
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Logging.cpp
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#include "Logging.h"
#include "CurrentThread.h"
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <chrono>
#include <sstream>
namespace eff
{
__thread char t_errnobuf[512];
__thread char t_time[64];
__thread time_t t_lastSecond;
const char *strerror_tl(int savedErrno)
{
//根据错误码得到对应的错误描述。
return strerror_r(savedErrno, t_errnobuf, sizeof t_errnobuf);
}
Logger::LogLevel initLogLevel()
{
return Logger::DEBUG;
// if(::getenv("MUDUO_LOG_TRACE"))
// return Logger::TRACE;
// else if(::getenv("MUDUO_LOG_DEBUG"))
// return Logger::DEBUG;
// else
// return Logger::INFO;
}
Logger::LogLevel g_logLevel = initLogLevel();
const char *LogLevelName[Logger::NUM_LOG_LEVELS] =
{
"TRACE ",
"DEBUG ",
"INFO ",
"WARN ",
"ERROR ",
"FATAL ",
};
class T
{
public:
T(const char *str, unsigned len)
: str_(str),
len_(len)
{
assert(strlen(str) == len_);
}
const char *str_;
const unsigned len_;
};
inline LogStream &operator<<(LogStream &s, T v)
{
s.append(v.str_, v.len_);
return s;
}
inline LogStream &operator<<(LogStream &s, const Logger::SourceFile &v)
{
s.append(v.data_, v.size_);
return s;
}
void defaultOutput(const char *msg, int len)
{
size_t n = fwrite(msg, 1, len, stdout);
(void)n;
}
void defaultFlush()
{
fflush(stdout);
}
Logger::OutputFunc g_output = defaultOutput;
Logger::FlushFunc g_flush = defaultFlush;
}
// TimeZone g_logTimeZone;
using namespace eff;
Logger::Impl::Impl(LogLevel level, int savedErrno, const SourceFile &file, int line)
: time_(Timestamp::now()), //获取当前时间
stream_(),
level_(level),
line_(line),
basename_(file)
{
formatTime();
// CurrentTread::tid();
// stream_ << T(CurrentThread::tidString(), CurrentTread::tidStringLength());
stream_ << T(LogLevelName[level], 6);
if (savedErrno != 0)
{
stream_ << strerror_tl(savedErrno) << " (errno=" << savedErrno << ")";
}
}
//待完成
// void Logger::Impl::formatTime()
// {
// int64_t microSecondsSinceEpoch = time_.microSecondsSinceEpoch();
// time_t seconds = static_cast<time_t>(microSecondsSinceEpoch / Timestamp::kMicroSecondsPerSecond);
// int microseconds = static_cast<int>(microSecondsSinceEpoch % Timestamp::kMicroSecondsPerSecond);
// if (seconds != t_lastSecond)
// {
// t_lastSecond = seconds;
// struct tm tm_time;
// // if(g_logTimeZone.valid())
// // {
// // tm_time = g_logTimeZone.toLocalTime(seconds);
// // }else{
// ::gmtime_r(&seconds, &tm_time);
// //}
// int len = snprintf(t_time, sizeof(t_time), "%4d%02d%02d %02d:%02d:%02d",
// 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);
// assert(len == 17);
// (void)len;
// }
// // if(g_logTimeZone.valid())
// // {
// // Fmt us(".%06d", microseconds);
// // assert(us.length() == 8);
// // stream_ << T(t_time, 17) << T(us.data(), 8);
// // }else{
// Fmt us(".%06dZ ", microseconds);
// assert(us.length() == 9);
// stream_ << T(t_time, 17) << T(us.data(), 9);
// //}
// }
void Logger::Impl::formatTime()
{
int64_t milli = time_.microSecondsSinceEpoch() / 1000 + (int64_t)8 * 60 * 60 * 1000;
auto mTime = std::chrono::milliseconds(milli);
auto tp = std::chrono::time_point<std::chrono::system_clock,
std::chrono::milliseconds>(mTime);
auto tt = std::chrono::system_clock::to_time_t(tp);
std::tm *now = std::gmtime(&tt);
stream_ << now->tm_year + 1900 << '-' << now->tm_mon + 1 << '-'
<< now->tm_mday << ' ' << now->tm_hour << ':' << now->tm_min << ':'
<< now->tm_sec << ' ';
}
void Logger::Impl::finish()
{
stream_ << " - " << basename_ << ';' << line_ << '\n';
}
Logger::Logger(SourceFile file, int line)
: impl_(INFO, 0, file, line)
{
}
Logger::Logger(SourceFile file, int line, LogLevel level, const char *func)
: impl_(level, 0, file, line)
{
impl_.stream_ << func << ' ';
}
Logger::Logger(SourceFile file, int line, LogLevel level)
: impl_(level, 0, file, line)
{
}
Logger::Logger(SourceFile file, int line, bool toAbort)
: impl_(toAbort ? FATAL : ERROR, errno, file, line)
{
}
Logger::~Logger()
{
impl_.finish();
const LogStream::Buffer &buf(stream().buffer());
g_output(buf.data(), buf.length());
if (impl_.level_ == FATAL)
{
g_flush();
abort();
}
}
void Logger::setLogLevel(Logger::LogLevel level)
{
g_logLevel = level;
}
void Logger::setOutput(OutputFunc out)
{
g_output = out;
}
void Logger::setFlush(FlushFunc flush)
{
g_flush = flush;
}
// void Logger::setTimeZone(const TimeZone& tz)
// {
// g_logTimeZone = tz;
// }