thread.cpp

GNU ccScript is a C++ class framework for creating a virtual machine execution system for use with a

// Copyright (C) 1999-2005 Open Source Telecom Corporation.
//  
// This program 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 2 of the License, or
// (at your option) any later version.
// 
// This program 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 this program; if not, write to the Free Software 
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
// 
// As a special exception, you may use this file as part of a free software
// library without restriction.  Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License.  This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
//
// This exception applies only to the code released under the name GNU
// ccScript.  If you copy code from other releases into a copy of GNU
// ccScript, as the General Public License permits, the exception does
// not apply to the code that you add in this way.  To avoid misleading
// anyone as to the status of such modified files, you must delete
// this exception notice from them.
//
// If you write modifications of your own for GNU ccScript, it is your choice
// whether to permit this exception to apply to your modifications.
// If you do not wish that, delete this exception notice.
//

#include "engine.h"

using namespace std;
using namespace ost;

ScriptThread::ScriptThread(ScriptInterp *ip, int pri, size_t stack) :
Thread(pri, stack)
{
	interp = ip;
	interp->thread = this; 
	exiting = false;
	stacksize = stack;
	interp->enterThread(this);
}

ScriptThread::~ScriptThread()
{
	terminate();
}

void ScriptThread::exit(const char *msg)
{
	lock();
	exiting = true;
	interp->exitThread(msg);
	release();
	Thread::sync();
}

void ScriptThread::exitEvent(const char *evt, bool flag)
{
	bool rtn;
	lock();
	rtn = interp->eventThread(evt, flag);
	if(rtn)
		interp->exitThread(NULL);
	release();
	if(rtn)
		Thread::sync();
	else
		Thread::yield();
}

timeout_t ScriptThread::getTimeout(void)
{
	return 3600000l;
}

void ScriptThread::block(void)
{
	setCancel(cancelDisabled);
}

void ScriptThread::unblock(void)
{
	setCancel(cancelDeferred);
	Thread::yield();
}

void ScriptThread::lock(void)
{
	block();
	interp->enter();
}

void ScriptThread::release(void)
{
	interp->release();
	interp->leave();
	unblock();
}