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/*
-----------------------------------------------------------------------
Copyright: 2010-2014, iMinds-Vision Lab, University of Antwerp
2014, CWI, Amsterdam
Contact: astra@uantwerpen.be
Website: http://sf.net/projects/astra-toolbox
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/>.
-----------------------------------------------------------------------
$Id$
*/
#include "astra/AsyncAlgorithm.h"
#include "astra/AstraObjectFactory.h"
#ifndef USE_PTHREAD
#include <boost/bind.hpp>
#endif
namespace astra {
CAsyncAlgorithm::CAsyncAlgorithm()
{
m_bInitialized = false;
#ifndef USE_PTHREADS
m_pThread = 0;
#endif
m_bThreadStarted = false;
}
CAsyncAlgorithm::CAsyncAlgorithm(CAlgorithm* _pAlg)
{
m_pAlg = _pAlg;
m_bInitialized = (m_pAlg != 0);
#ifndef USE_PTHREADS
m_pThread = 0;
#endif
m_bThreadStarted = false;
m_bDone = false;
m_bAutoFree = false;
}
bool CAsyncAlgorithm::initialize(const Config& _cfg)
{
if (m_bInitialized && m_bThreadStarted) {
#ifndef USE_PTHREADS
m_pThread->join();
delete m_pThread;
#else
pthread_join(m_thread, 0);
#endif
}
#ifndef USE_PTHREADS
m_pThread = 0;
#endif
m_bThreadStarted = false;
m_pAlg = 0;
m_bDone = false;
m_pAlg = CAlgorithmFactory::getSingleton().create(_cfg);
if (m_pAlg && !m_pAlg->isInitialized()) {
if (m_bAutoFree)
delete m_pAlg;
m_pAlg = 0;
}
m_bInitialized = (m_pAlg != 0);
m_bAutoFree = true;
return m_bInitialized;
}
bool CAsyncAlgorithm::initialize(CAlgorithm* _pAlg)
{
if (m_bInitialized && m_bThreadStarted) {
#ifndef USE_PTHREADS
m_pThread->join();
delete m_pThread;
#else
pthread_join(m_thread, 0);
#endif
}
#ifndef USE_PTHREADS
m_pThread = 0;
#endif
m_bThreadStarted = false;
m_bDone = false;
m_pAlg = _pAlg;
m_bInitialized = (m_pAlg != 0);
m_bAutoFree = false;
return m_bInitialized;
}
CAsyncAlgorithm::~CAsyncAlgorithm()
{
if (m_bInitialized && m_bThreadStarted) {
#ifndef USE_PTHREADS
m_pThread->join();
delete m_pThread;
#else
pthread_join(m_thread, 0);
#endif
}
#ifndef USE_PTHREADS
m_pThread = 0;
#endif
m_bThreadStarted = false;
if (m_bInitialized && m_bAutoFree) {
delete m_pAlg;
m_pAlg = 0;
}
}
#ifdef USE_PTHREADS
void* runAsync_pthreads(void* data)
{
CAsyncAlgorithm::AsyncThreadInfo *info = (CAsyncAlgorithm::AsyncThreadInfo*)data;
info->m_pAlg->run(info->m_iIterations);
*info->m_pDone = true;
return 0;
}
#endif
void CAsyncAlgorithm::run(int _iNrIterations)
{
if (!m_bInitialized)
return;
#ifndef USE_PTHREADS
m_pThread = new boost::thread(
boost::bind(&CAsyncAlgorithm::runWrapped,
this, _iNrIterations));
#else
m_ThreadInfo.m_iIterations = _iNrIterations;
m_ThreadInfo.m_pAlg = m_pAlg;
m_ThreadInfo.m_pDone = &this->m_bDone;
pthread_create(&m_thread, 0, runAsync_pthreads, &this->m_ThreadInfo);
#endif
}
void CAsyncAlgorithm::runWrapped(int _iNrIterations)
{
m_pAlg->run(_iNrIterations);
m_bDone = true;
}
void CAsyncAlgorithm::timedJoin(int _milliseconds)
{
#ifndef USE_PTHREADS
if (m_pThread) {
boost::posix_time::milliseconds rel(_milliseconds);
bool res = m_pThread->timed_join(rel);
if (res) {
delete m_pThread;
m_pThread = 0;
m_bThreadStarted = false;
}
}
#else
if (m_bThreadStarted) {
struct timespec abstime;
clock_gettime(CLOCK_REALTIME, &abstime);
abstime.tv_sec += _milliseconds / 1000;
abstime.tv_nsec += (_milliseconds % 1000) * 1000000L;
int err = pthread_timedjoin_np(m_thread, 0, &abstime);
if (err == 0) {
m_bThreadStarted = false;
}
}
#endif
}
void CAsyncAlgorithm::signalAbort()
{
if (m_pAlg)
m_pAlg->signalAbort();
}
}
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