/*! * \copy * Copyright (c) 2009-2015, Cisco Systems * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * * * \file WelsThreadPool.cpp * * \brief functions for Thread Pool * * \date 5/09/2012 Created * ************************************************************************************* */#include "WelsThread.h"namespace WelsCommon {CWelsThread::CWelsThread() : m_hThread (0), m_bRunning (false), m_bEndFlag (false) { WelsEventOpen (&m_hEvent); WelsMutexInit(&m_hMutex); m_iConVar = 1;}CWelsThread::~CWelsThread() { Kill(); WelsEventClose (&m_hEvent); WelsMutexDestroy(&m_hMutex);}void CWelsThread::Thread() { while (true) { WelsEventWait (&m_hEvent,&m_hMutex,m_iConVar); if (GetEndFlag()) { break; } m_iConVar = 1; ExecuteTask();//in ExecuteTask there will be OnTaskStop which opens the potential new Signaling of next run, so the setting of m_iConVar = 1 should be before ExecuteTask() } SetRunning (false);}WELS_THREAD_ERROR_CODE CWelsThread::Start() {#ifndef __APPLE__ if (NULL == m_hEvent) { return WELS_THREAD_ERROR_GENERAL; }#endif if (GetRunning()) { return WELS_THREAD_ERROR_OK; } SetEndFlag (false); WELS_THREAD_ERROR_CODE rc = WelsThreadCreate (&m_hThread, (LPWELS_THREAD_ROUTINE)TheThread, this, 0); if (WELS_THREAD_ERROR_OK != rc) { return rc; } while (!GetRunning()) { WelsSleep (1); } return WELS_THREAD_ERROR_OK;}void CWelsThread::Kill() { if (!GetRunning()) { return; } SetEndFlag (true); WelsEventSignal (&m_hEvent,&m_hMutex,&m_iConVar); WelsThreadJoin (m_hThread); return;}WELS_THREAD_ROUTINE_TYPE CWelsThread::TheThread (void* pParam) { CWelsThread* pThis = static_cast<CWelsThread*> (pParam); pThis->SetRunning (true); pThis->Thread(); WELS_THREAD_ROUTINE_RETURN (NULL);}}
/*!
* \copy
* Copyright (c) 2009-2015, Cisco Systems
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*
* \file WelsThreadPool.cpp
*
* \brief functions for Thread Pool
*
* \date 5/09/2012 Created
*
*************************************************************************************
*/
#include "WelsThread.h"
namespace WelsCommon {
CWelsThread::CWelsThread() :
m_hThread (0),
m_bRunning (false),
m_bEndFlag (false) {
WelsEventOpen (&m_hEvent);
WelsMutexInit(&m_hMutex);
m_iConVar = 1;
}
CWelsThread::~CWelsThread() {
Kill();
WelsEventClose (&m_hEvent);
WelsMutexDestroy(&m_hMutex);
}
void CWelsThread::Thread() {
while (true) {
WelsEventWait (&m_hEvent,&m_hMutex,m_iConVar);
if (GetEndFlag()) {
break;
}
m_iConVar = 1;
ExecuteTask();//in ExecuteTask there will be OnTaskStop which opens the potential new Signaling of next run, so the setting of m_iConVar = 1 should be before ExecuteTask()
}
SetRunning (false);
}
WELS_THREAD_ERROR_CODE CWelsThread::Start() {
#ifndef __APPLE__
if (NULL == m_hEvent) {
return WELS_THREAD_ERROR_GENERAL;
}
#endif
if (GetRunning()) {
return WELS_THREAD_ERROR_OK;
}
SetEndFlag (false);
WELS_THREAD_ERROR_CODE rc = WelsThreadCreate (&m_hThread,
(LPWELS_THREAD_ROUTINE)TheThread, this, 0);
if (WELS_THREAD_ERROR_OK != rc) {
return rc;
}
while (!GetRunning()) {
WelsSleep (1);
}
return WELS_THREAD_ERROR_OK;
}
void CWelsThread::Kill() {
if (!GetRunning()) {
return;
}
SetEndFlag (true);
WelsEventSignal (&m_hEvent,&m_hMutex,&m_iConVar);
WelsThreadJoin (m_hThread);
return;
}
WELS_THREAD_ROUTINE_TYPE CWelsThread::TheThread (void* pParam) {
CWelsThread* pThis = static_cast<CWelsThread*> (pParam);
pThis->SetRunning (true);
pThis->Thread();
WELS_THREAD_ROUTINE_RETURN (NULL);
}
}