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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkThreadLogger.cxx,v $
Language: C++
Date: $Date: 2005-11-08 22:06:08 $
Version: $Revision: 1.4 $
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#include<iostream>
#include "itkThreadLogger.h"
namespace itk
{
/** Set the priority level for the current logger. Only messages that have
* priorities equal or greater than the one set here will be posted to the
* current outputs */
void ThreadLogger::SetPriorityLevel( PriorityLevelType level )
{
this->m_WaitMutex.Unlock();
this->m_Mutex.Lock();
this->m_OperationQ.push(SET_PRIORITY_LEVEL);
this->m_LevelQ.push(level);
this->m_Mutex.Unlock();
this->m_WaitMutex.Lock();
}
/** Get the priority level for the current logger. Only messages that have
* priorities equal or greater than the one set here will be posted to the
* current outputs */
Logger::PriorityLevelType ThreadLogger::GetPriorityLevel() const
{
this->m_Mutex.Lock();
PriorityLevelType level = this->m_PriorityLevel;
this->m_Mutex.Unlock();
return level;
}
void ThreadLogger::SetLevelForFlushing( PriorityLevelType level )
{
this->m_WaitMutex.Unlock();
this->m_Mutex.Lock();
this->m_LevelForFlushing = level;
this->m_OperationQ.push(SET_LEVEL_FOR_FLUSHING);
this->m_LevelQ.push(level);
this->m_Mutex.Unlock();
this->m_WaitMutex.Lock();
}
Logger::PriorityLevelType ThreadLogger::GetLevelForFlushing() const
{
this->m_Mutex.Lock();
PriorityLevelType level = this->m_LevelForFlushing;
this->m_Mutex.Unlock();
return level;
}
/** Adds an output stream to the MultipleLogOutput for writing. */
void ThreadLogger::AddLogOutput( OutputType* output )
{
this->m_WaitMutex.Unlock();
this->m_Mutex.Lock();
this->m_OperationQ.push(ADD_LOG_OUTPUT);
this->m_OutputQ.push(output);
this->m_Mutex.Unlock();
this->m_WaitMutex.Lock();
}
void ThreadLogger::Write(PriorityLevelType level, std::string const & content)
{
this->m_WaitMutex.Unlock();
this->m_Mutex.Lock();
this->m_OperationQ.push(WRITE);
this->m_MessageQ.push(content);
this->m_LevelQ.push(level);
this->m_Mutex.Unlock();
this->m_WaitMutex.Lock();
}
void ThreadLogger::Flush()
{
this->m_Mutex.Lock();
while( !this->m_OperationQ.empty() )
{
switch( this->m_OperationQ.front() )
{
case ThreadLogger::SET_PRIORITY_LEVEL:
this->m_PriorityLevel = this->m_LevelQ.front();
this->m_LevelQ.pop();
break;
case ThreadLogger::SET_LEVEL_FOR_FLUSHING:
this->m_LevelForFlushing = this->m_LevelQ.front();
this->m_LevelQ.pop();
break;
case ThreadLogger::ADD_LOG_OUTPUT:
this->m_Output->AddLogOutput(this->m_OutputQ.front());
this->m_OutputQ.pop();
break;
case ThreadLogger::WRITE:
this->Logger::Write(this->m_LevelQ.front(), this->m_MessageQ.front());
this->m_LevelQ.pop();
this->m_MessageQ.pop();
break;
case ThreadLogger::FLUSH:
this->Logger::Flush();
break;
}
this->m_OperationQ.pop();
}
this->m_Output->Flush();
this->m_Mutex.Unlock();
}
/** Constructor */
ThreadLogger::ThreadLogger()
{
this->m_WaitMutex.Lock();
this->m_Threader = MultiThreader::New();
this->m_ThreadID = this->m_Threader->SpawnThread(ThreadFunction, this);
}
/** Destructor */
ThreadLogger::~ThreadLogger()
{
this->m_WaitMutex.Unlock();
if( this->m_Threader )
{
this->m_Threader->TerminateThread(this->m_ThreadID);
}
}
ITK_THREAD_RETURN_TYPE ThreadLogger::ThreadFunction(void* pInfoStruct)
{
struct MultiThreader::ThreadInfoStruct * pInfo = (struct MultiThreader::ThreadInfoStruct*)pInfoStruct;
if( pInfo == NULL )
{
return ITK_THREAD_RETURN_VALUE;
}
if( pInfo->UserData == NULL )
{
return ITK_THREAD_RETURN_VALUE;
}
ThreadLogger *pLogger = (ThreadLogger*)pInfo->UserData;
while(1)
{
pLogger->m_WaitMutex.Lock();
pInfo->ActiveFlagLock->Lock();
int activeFlag = *pInfo->ActiveFlag;
pInfo->ActiveFlagLock->Unlock();
if( !activeFlag )
{
break;
}
pLogger->m_Mutex.Lock();
while( !pLogger->m_OperationQ.empty() )
{
switch( pLogger->m_OperationQ.front() )
{
case ThreadLogger::SET_PRIORITY_LEVEL:
pLogger->m_PriorityLevel = pLogger->m_LevelQ.front();
pLogger->m_LevelQ.pop();
break;
case ThreadLogger::SET_LEVEL_FOR_FLUSHING:
pLogger->m_LevelForFlushing = pLogger->m_LevelQ.front();
pLogger->m_LevelQ.pop();
break;
case ThreadLogger::ADD_LOG_OUTPUT:
pLogger->m_Output->AddLogOutput(pLogger->m_OutputQ.front());
pLogger->m_OutputQ.pop();
break;
case ThreadLogger::WRITE:
pLogger->Logger::Write(pLogger->m_LevelQ.front(), pLogger->m_MessageQ.front());
pLogger->m_LevelQ.pop();
pLogger->m_MessageQ.pop();
break;
case ThreadLogger::FLUSH:
pLogger->Logger::Flush();
break;
}
pLogger->m_OperationQ.pop();
}
pLogger->m_Mutex.Unlock();
pLogger->m_WaitMutex.Unlock();
}
return ITK_THREAD_RETURN_VALUE;
}
/** Print contents of a ThreadLogger */
void ThreadLogger::PrintSelf(std::ostream &os, Indent indent) const
{
Superclass::PrintSelf(os,indent);
os << indent << "Thread ID: " << this->m_ThreadID << std::endl;
os << indent << "Operation Queue Size: " << this->m_OperationQ.size() << std::endl;
os << indent << "Message Queue Size: " << this->m_MessageQ.size() << std::endl;
os << indent << "Level Queue Size: " << this->m_LevelQ.size() << std::endl;
os << indent << "Output Queue Size: " << this->m_OutputQ.size() << std::endl;
}
} // namespace itk
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