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MixerProfiler: initial simple implementation

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This commit is contained in:
Tobias Doerffel
2014-09-02 11:19:57 +02:00
parent c4f2311032
commit e1664b106c
2 changed files with 123 additions and 0 deletions
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60
include/MixerProfiler.h Normal file
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/*
* MixerProfiler.h - class for profiling performance of Mixer
*
* Copyright (c) 2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
*
* This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program (see COPYING); if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA.
*
*/
#ifndef MIXER_PROFILER_H
#define MIXER_PROFILER_H
#include <QFile>
#include "MicroTimer.h"
class MixerProfiler
{
public:
MixerProfiler();
~MixerProfiler();
void startPeriod()
{
m_periodTimer.reset();
}
void finishPeriod( sample_rate_t sampleRate, fpp_t framesPerPeriod );
int cpuLoad() const
{
return m_cpuLoad;
}
void setOutputFile( const QString& outputFile );
private:
MicroTimer m_periodTimer;
int m_cpuLoad;
QFile m_outputFile;
};
#endif

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src/core/MixerProfiler.cpp Normal file
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/*
* MixerProfiler.cpp - class for profiling performance of Mixer
*
* Copyright (c) 2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
*
* This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program (see COPYING); if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA.
*
*/
#include "MixerProfiler.h"
MixerProfiler::MixerProfiler() :
m_periodTimer(),
m_cpuLoad( 0 ),
m_outputFile()
{
}
MixerProfiler::~MixerProfiler()
{
}
void MixerProfiler::finishPeriod( sample_rate_t sampleRate, fpp_t framesPerPeriod )
{
int periodElapsed = m_periodTimer.elapsed();
const float newCpuLoad = periodElapsed / 10000.0f * sampleRate / framesPerPeriod;
m_cpuLoad = qBound<int>( 0, ( newCpuLoad * 0.1f + m_cpuLoad * 0.9f ), 100 );
if( m_outputFile.isOpen() )
{
m_outputFile.write( QString( "%1\n" ).arg( periodElapsed ).toLatin1() );
}
}
void MixerProfiler::setOutputFile( const QString& outputFile )
{
m_outputFile.close();
m_outputFile.setFileName( outputFile );
m_outputFile.open( QFile::WriteOnly | QFile::Truncate );
}