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/**
* @file lltracethreadrecorder.cpp
*
* $LicenseInfo:firstyear=2001&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2012, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include "linden_common.h"
#include "lltracethreadrecorder.h"
namespace LLTrace
{
///////////////////////////////////////////////////////////////////////
// ThreadRecorder
///////////////////////////////////////////////////////////////////////
ThreadRecorder::ThreadRecorder()
{
get_thread_recorder() = this;
mFullRecording.start();
}
ThreadRecorder::ThreadRecorder( const ThreadRecorder& other )
: mFullRecording(other.mFullRecording)
{
get_thread_recorder() = this;
mFullRecording.start();
}
ThreadRecorder::~ThreadRecorder()
{
get_thread_recorder() = NULL;
}
void ThreadRecorder::activate( Recording* recording )
{
mActiveRecordings.push_front(ActiveRecording(recording));
mActiveRecordings.front().mBaseline.makePrimary();
}
std::list<ThreadRecorder::ActiveRecording>::iterator ThreadRecorder::update( Recording* recording )
{
std::list<ActiveRecording>::iterator it, end_it;
for (it = mActiveRecordings.begin(), end_it = mActiveRecordings.end();
it != end_it;
++it)
{
std::list<ActiveRecording>::iterator next_it = it;
++next_it;
// if we have another recording further down in the stack...
if (next_it != mActiveRecordings.end())
{
// ...push our gathered data down to it
next_it->mBaseline.mergeRecording(it->mBaseline);
}
// copy accumulated measurements into result buffer and clear accumulator (mBaseline)
it->moveBaselineToTarget();
if (it->mTargetRecording == recording)
{
// found the recording, so return it
break;
}
}
return it;
}
void ThreadRecorder::deactivate( Recording* recording )
{
std::list<ActiveRecording>::iterator it = update(recording);
if (it != mActiveRecordings.end())
{
// and if we've found the recording we wanted to update
std::list<ActiveRecording>::iterator next_it = it;
++next_it;
if (next_it != mActiveRecordings.end())
{
next_it->mTargetRecording->makePrimary();
}
mActiveRecordings.erase(it);
}
}
ThreadRecorder::ActiveRecording::ActiveRecording( Recording* target )
: mTargetRecording(target)
{
}
void ThreadRecorder::ActiveRecording::moveBaselineToTarget()
{
mTargetRecording->mMeasurements.write()->addSamples(*mBaseline.mMeasurements);
mTargetRecording->mRates.write()->addSamples(*mBaseline.mRates);
mTargetRecording->mStackTimers.write()->addSamples(*mBaseline.mStackTimers);
mBaseline.mMeasurements.write()->reset();
mBaseline.mRates.write()->reset();
mBaseline.mStackTimers.write()->reset();
}
///////////////////////////////////////////////////////////////////////
// SlaveThreadRecorder
///////////////////////////////////////////////////////////////////////
SlaveThreadRecorder::SlaveThreadRecorder()
: ThreadRecorder(getMasterThreadRecorder())
{
getMasterThreadRecorder().addSlaveThread(this);
}
SlaveThreadRecorder::~SlaveThreadRecorder()
{
getMasterThreadRecorder().removeSlaveThread(this);
}
void SlaveThreadRecorder::pushToMaster()
{
mFullRecording.stop();
{
LLMutexLock(getMasterThreadRecorder().getSlaveListMutex());
mSharedData.copyFrom(mFullRecording);
}
mFullRecording.start();
}
void SlaveThreadRecorder::SharedData::copyFrom( const Recording& source )
{
LLMutexLock lock(&mRecorderMutex);
mRecorder.mergeRecording(source);
}
void SlaveThreadRecorder::SharedData::copyTo( Recording& sink )
{
LLMutexLock lock(&mRecorderMutex);
sink.mergeRecording(mRecorder);
}
///////////////////////////////////////////////////////////////////////
// MasterThreadRecorder
///////////////////////////////////////////////////////////////////////
void MasterThreadRecorder::pullFromSlaveThreads()
{
LLMutexLock lock(&mSlaveListMutex);
for (slave_thread_recorder_list_t::iterator it = mSlaveThreadRecorders.begin(), end_it = mSlaveThreadRecorders.end();
it != end_it;
++it)
{
(*it)->mRecorder->mSharedData.copyTo((*it)->mSlaveRecording);
}
}
void MasterThreadRecorder::addSlaveThread( class SlaveThreadRecorder* child )
{
LLMutexLock lock(&mSlaveListMutex);
mSlaveThreadRecorders.push_back(new SlaveThreadRecorderProxy(child));
}
void MasterThreadRecorder::removeSlaveThread( class SlaveThreadRecorder* child )
{
LLMutexLock lock(&mSlaveListMutex);
for (slave_thread_recorder_list_t::iterator it = mSlaveThreadRecorders.begin(), end_it = mSlaveThreadRecorders.end();
it != end_it;
++it)
{
if ((*it)->mRecorder == child)
{
mSlaveThreadRecorders.erase(it);
break;
}
}
}
void MasterThreadRecorder::pushToMaster()
{}
MasterThreadRecorder::MasterThreadRecorder()
{}
///////////////////////////////////////////////////////////////////////
// MasterThreadRecorder::SlaveThreadTraceProxy
///////////////////////////////////////////////////////////////////////
MasterThreadRecorder::SlaveThreadRecorderProxy::SlaveThreadRecorderProxy( class SlaveThreadRecorder* recorder)
: mRecorder(recorder)
{}
}
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