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/*
-----------------------------------------------------------------------
Copyright: 2010-2016, iMinds-Vision Lab, University of Antwerp
2014-2016, CWI, Amsterdam
Contact: astra@astra-toolbox.com
Website: http://www.astra-toolbox.com/
This file is part of the ASTRA Toolbox.
The ASTRA Toolbox 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 3 of the License, or
(at your option) any later version.
The ASTRA Toolbox 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 the ASTRA Toolbox. If not, see <http://www.gnu.org/licenses/>.
-----------------------------------------------------------------------
*/
#ifndef _INC_ASTRA_ASYNCALGORITHM
#define _INC_ASTRA_ASYNCALGORITHM
#include "Config.h"
#include "Algorithm.h"
#ifdef USE_PTHREADS
#include <pthread.h>
#else
#include <boost/thread.hpp>
#endif
namespace astra {
/**
* \brief
* This class contains an wrapper algorithm that allows termination of its wrapped algorithm.
*
* This is used to allow algorithm termination from matlab command line.
*/
class _AstraExport CAsyncAlgorithm : public CAlgorithm {
public:
/** Default constructor, containing no code.
*/
CAsyncAlgorithm();
/** Constructor.
*/
explicit CAsyncAlgorithm(CAlgorithm* _pAlg);
/** Destructor.
*/
virtual ~CAsyncAlgorithm();
/** Initialize using config object.
*/
virtual bool initialize(const Config& _cfg);
/** Initialize using algorithm pointer.
*/
virtual bool initialize(CAlgorithm* _pAlg);
/** Run the algorithm.
*/
virtual void run(int _iNrIterations = 0);
/** Return pointer to the wrapped algorithm.
*/
CAlgorithm* getWrappedAlgorithm() { return m_pAlg; }
/** Is the wrapped algorithm done.
*/
bool isDone() const { return m_bDone; }
/** Signal abort to the wrapped algorithm.
*/
void signalAbort();
protected:
//< Has this class been initialized?
bool m_bInitialized;
//< Should wrapped algorithm be deleted after completion?
bool m_bAutoFree;
//< Pointer to wrapped algorithm.
CAlgorithm* m_pAlg;
//< Is the wrapped algorithm done.
volatile bool m_bDone;
#ifndef USE_PTHREADS
//< Handle to boost thread object running the wrapped algorithm.
boost::thread* m_pThread;
#else
pthread_t m_thread;
struct AsyncThreadInfo {
int m_iIterations;
CAlgorithm* m_pAlg;
volatile bool* m_pDone;
} m_ThreadInfo;
friend void* runAsync_pthreads(void*);
#endif
bool m_bThreadStarted;
//< Run the wrapped algorithm.
void runWrapped(int _iNrIterations);
};
}
#endif
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