pollymc/mmc_updater/src/Log.cpp

66 lines
1.2 KiB
C++
Raw Normal View History

#include "Log.h"
#include "Platform.h"
#include "StringUtils.h"
#include "ProcessUtils.h"
#include <string.h>
#include <iostream>
Log m_globalLog;
Log* Log::instance()
{
return &m_globalLog;
}
Log::Log()
{
}
Log::~Log()
{
}
void Log::open(const std::string& path)
{
m_mutex.lock();
m_output.open(path.c_str(),std::ios_base::out | std::ios_base::app);
m_mutex.unlock();
}
void Log::writeToStream(std::ostream& stream, Type type, const char* text)
{
// Multiple processes may be writing to the same log file during
// an update. No attempt is made to synchronize access to the file.
//
// Under Unix, appends to a single file on a local FS by multiple writers should be atomic
// provided that the length of 'text' is less than PIPE_BUF
//
switch (type)
{
case Info:
stream << "INFO ";
break;
case Warn:
stream << "WARN ";
break;
case Error:
stream << "ERROR ";
break;
}
stream << '(' << intToStr(ProcessUtils::currentProcessId()) << ") " << text << std::endl;
}
void Log::write(Type type, const char* text)
{
m_mutex.lock();
writeToStream(std::cerr,type,text);
if (m_output.is_open())
{
writeToStream(m_output,type,text);
}
m_mutex.unlock();
}