299 lines
5.9 KiB
C++
299 lines
5.9 KiB
C++
/**
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* vim: set ts=4 :
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* =============================================================================
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* SourceMod
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* Copyright (C) 2004-2008 AlliedModders LLC. All rights reserved.
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* =============================================================================
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License, version 3.0, as published by the
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* Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* As a special exception, AlliedModders LLC gives you permission to link the
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* code of this program (as well as its derivative works) to "Half-Life 2," the
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* "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
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* by the Valve Corporation. You must obey the GNU General Public License in
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* all respects for all other code used. Additionally, AlliedModders LLC grants
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* this exception to all derivative works. AlliedModders LLC defines further
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* exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
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* or <http://www.sourcemod.net/license.php>.
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*
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* Version: $Id$
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*/
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#include "BaseWorker.h"
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BaseWorker::BaseWorker(IThreadWorkerCallbacks *hooks) :
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m_perFrame(SM_DEFAULT_THREADS_PER_FRAME),
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m_state(Worker_Stopped),
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m_pHooks(hooks)
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{
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}
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BaseWorker::~BaseWorker()
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{
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if (m_state != Worker_Stopped || m_state != Worker_Invalid)
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Stop(true);
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if (m_ThreadQueue.size())
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Flush(true);
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}
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void BaseWorker::MakeThread(IThread *pThread)
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{
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ThreadParams pt;
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pt.flags = Thread_AutoRelease;
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pt.prio = ThreadPrio_Normal;
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MakeThread(pThread, &pt);
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}
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IThreadHandle *BaseWorker::MakeThread(IThread *pThread, ThreadFlags flags)
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{
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ThreadParams pt;
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pt.flags = flags;
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pt.prio = ThreadPrio_Normal;
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return MakeThread(pThread, &pt);
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}
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IThreadHandle *BaseWorker::MakeThread(IThread *pThread, const ThreadParams *params)
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{
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if (m_state != Worker_Running)
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return NULL;
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SWThreadHandle *swt = new SWThreadHandle(this, params, pThread);
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AddThreadToQueue(swt);
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return swt;
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}
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void BaseWorker::GetPriorityBounds(ThreadPriority &max, ThreadPriority &min)
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{
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max = ThreadPrio_Normal;
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min = ThreadPrio_Normal;
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}
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unsigned int BaseWorker::Flush(bool flush_cancel)
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{
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SWThreadHandle *swt;
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unsigned int num = 0;
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while ((swt=PopThreadFromQueue()) != NULL)
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{
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swt->m_state = Thread_Done;
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if (!flush_cancel)
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swt->pThread->RunThread(swt);
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swt->pThread->OnTerminate(swt, flush_cancel);
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if (swt->m_params.flags & Thread_AutoRelease)
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delete swt;
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num++;
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}
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return num;
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}
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SWThreadHandle *BaseWorker::PopThreadFromQueue()
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{
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if (!m_ThreadQueue.size())
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return NULL;
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SourceHook::List<SWThreadHandle *>::iterator begin;
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SWThreadHandle *swt;
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begin = m_ThreadQueue.begin();
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swt = (*begin);
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m_ThreadQueue.erase(begin);
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return swt;
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}
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void BaseWorker::AddThreadToQueue(SWThreadHandle *pHandle)
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{
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m_ThreadQueue.push_back(pHandle);
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}
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WorkerState BaseWorker::GetStatus(unsigned int *threads)
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{
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if (threads)
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*threads = m_perFrame;
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return m_state;
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}
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unsigned int BaseWorker::RunFrame()
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{
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unsigned int done = 0;
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unsigned int max = m_perFrame;
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SWThreadHandle *swt = NULL;
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IThread *pThread = NULL;
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while (done < max)
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{
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if ((swt=PopThreadFromQueue()) == NULL)
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{
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break;
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}
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pThread = swt->pThread;
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swt->m_state = Thread_Running;
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pThread->RunThread(swt);
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swt->m_state = Thread_Done;
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pThread->OnTerminate(swt, false);
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if (swt->m_params.flags & Thread_AutoRelease)
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{
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delete swt;
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}
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done++;
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}
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return done;
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}
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void BaseWorker::SetMaxThreadsPerFrame(unsigned int threads)
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{
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m_perFrame = threads;
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}
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bool BaseWorker::Start()
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{
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if (m_state != Worker_Invalid && m_state != Worker_Stopped)
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{
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return false;
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}
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m_state = Worker_Running;
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if (m_pHooks)
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{
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m_pHooks->OnWorkerStart(this);
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}
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return true;
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}
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bool BaseWorker::Stop(bool flush_cancel)
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{
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if (m_state == Worker_Invalid || m_state == Worker_Stopped)
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{
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return false;
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}
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if (m_state == Worker_Paused)
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{
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if (!Unpause())
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{
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return false;
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}
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}
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m_state = Worker_Stopped;
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Flush(flush_cancel);
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if (m_pHooks)
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{
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m_pHooks->OnWorkerStop(this);
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}
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return true;
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}
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bool BaseWorker::Pause()
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{
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if (m_state != Worker_Running)
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{
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return false;
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}
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m_state = Worker_Paused;
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return true;
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}
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bool BaseWorker::Unpause()
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{
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if (m_state != Worker_Paused)
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{
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return false;
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}
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m_state = Worker_Running;
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return true;
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}
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/***********************
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* THREAD HANDLE STUFF *
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***********************/
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void SWThreadHandle::DestroyThis()
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{
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delete this;
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}
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void SWThreadHandle::GetParams(ThreadParams *p)
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{
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*p = m_params;
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}
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ThreadPriority SWThreadHandle::GetPriority()
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{
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return m_params.prio;
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}
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ThreadState SWThreadHandle::GetState()
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{
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return m_state;
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}
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IThreadCreator *SWThreadHandle::Parent()
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{
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return m_parent;
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}
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bool SWThreadHandle::SetPriority(ThreadPriority prio)
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{
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if (m_params.prio != ThreadPrio_Normal)
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return false;
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m_params.prio = prio;
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return true;
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}
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bool SWThreadHandle::Unpause()
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{
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if (m_state != Thread_Paused)
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return false;
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m_state = Thread_Running;
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return true;
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}
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bool SWThreadHandle::WaitForThread()
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{
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return false;
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}
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SWThreadHandle::SWThreadHandle(IThreadCreator *parent, const ThreadParams *p, IThread *thread) :
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m_state(Thread_Paused), m_params(*p), m_parent(parent), pThread(thread)
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{
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}
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IThread *SWThreadHandle::GetThread()
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{
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return pThread;
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}
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