/*    This file is a part of the JThread package, which contains some object-    oriented thread wrappers for different thread implementations.    Copyright (c) 2000-2004  Jori Liesenborgs (jori@lumumba.luc.ac.be)    Permission is hereby granted, free of charge, to any person obtaining a    copy of this software and associated documentation files (the "Software"),    to deal in the Software without restriction, including without limitation    the rights to use, copy, modify, merge, publish, distribute, sublicense,    and/or sell copies of the Software, and to permit persons to whom the    Software is furnished to do so, subject to the following conditions:    The above copyright notice and this permission notice shall be included in    all copies or substantial portions of the Software.    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL    THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER    DEALINGS IN THE SOFTWARE.*/#include "jthread.h"#include <stdlib.h>JThread::JThread(){	retval = NULL;	mutexinit = false;	running = false;}JThread::~JThread(){	Kill();}int JThread::Start(){	int status;	if (!mutexinit)	{		if (!runningmutex.IsInitialized())		{			if (runningmutex.Init() < 0)				return ERR_JTHREAD_CANTINITMUTEX;		}		if (!continuemutex.IsInitialized())		{			if (continuemutex.Init() < 0)				return ERR_JTHREAD_CANTINITMUTEX;		}		if (!continuemutex2.IsInitialized())		{			if (continuemutex2.Init() < 0)				return ERR_JTHREAD_CANTINITMUTEX;		}		mutexinit = true;	}		runningmutex.Lock();	if (running)	{		runningmutex.Unlock();		return ERR_JTHREAD_ALREADYRUNNING;	}	runningmutex.Unlock();		continuemutex.Lock();	status = pthread_create(&threadid,NULL,TheThread,this);	if (status != 0)	{		continuemutex.Unlock();		return ERR_JTHREAD_CANTSTARTTHREAD;	}		/* Wait until 'running' is set */		runningmutex.Lock();				while (!running)	{		runningmutex.Unlock();		runningmutex.Lock();	}	runningmutex.Unlock();		continuemutex.Unlock();		continuemutex2.Lock();	continuemutex2.Unlock();	return 0;}int JThread::Kill(){	runningmutex.Lock();				if (!running)	{		runningmutex.Unlock();		return ERR_JTHREAD_NOTRUNNING;	}	pthread_cancel(threadid);	running = false;	runningmutex.Unlock();	return 0;}bool JThread::IsRunning(){	bool r;		runningmutex.Lock();				r = running;	runningmutex.Unlock();	return r;}void *JThread::GetReturnValue(){	void *val;		runningmutex.Lock();	if (running)		val = NULL;	else		val = retval;	runningmutex.Unlock();	return val;}void *JThread::TheThread(void *param){	JThread *jthread;	void *ret;		jthread = (JThread *)param;		jthread->continuemutex2.Lock();	jthread->runningmutex.Lock();	jthread->running = true;	jthread->runningmutex.Unlock();		jthread->continuemutex.Lock();	jthread->continuemutex.Unlock();		ret = jthread->Thread();	jthread->runningmutex.Lock();	jthread->running = false;	jthread->retval = ret;	jthread->runningmutex.Unlock();	return NULL;}void JThread::ThreadStarted(){	continuemutex2.Unlock();}