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Declarations and implementations of MixerWorkerThread and ThreadableJob have been moved into separate source files. Furthermore there were some improvements to MixerWorkerThreads. MixerWorkerThread::processJobQueue() does not return until the job queue completely has been processed. This way each thread can "help" to finish processing the queue and does not get back to sleep until all of the work is done. Management of the queue is now done via an array of QAtomicPointers. Items that are non-NULL still need to be processed while NULL-items were taken from the queue (i.e. in progress or done). Thus we do not need to deal with ThreadableJob-states within MixerWorkerThread anymore.
85 lines
1.7 KiB
C++
85 lines
1.7 KiB
C++
/*
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* ThreadableJob.h - declaration of class ThreadableJob
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*
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* Copyright (c) 2009 Tobias Doerffel <tobydox/at/users.sourceforge.net>
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*
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* This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#ifndef _THREADABLE_JOB_H
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#define _THREADABLE_JOB_H
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#include <QtCore/QAtomicInt>
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#include "mixer.h"
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class ThreadableJob
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{
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public:
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enum ProcessingState
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{
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Unstarted,
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Queued,
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InProgress,
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Done
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};
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ThreadableJob() :
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m_state( ThreadableJob::Unstarted )
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{
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}
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inline ProcessingState state() const
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{
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return static_cast<ProcessingState>( (int) m_state );
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}
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inline void reset()
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{
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m_state = Unstarted;
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}
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inline void queue()
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{
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m_state = Queued;
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}
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void process( sampleFrame * _working_buffer )
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{
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if( m_state.testAndSetOrdered( Queued, InProgress ) )
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{
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doProcessing( _working_buffer );
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m_state = Done;
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}
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}
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virtual bool requiresProcessing() const = 0;
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protected:
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virtual void doProcessing( sampleFrame * _working_buffer ) = 0;
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QAtomicInt m_state;
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} ;
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#endif
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