/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * $URL: https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/trunk/backends/platform/psp/osys_psp.cpp $
 * $Id: osys_psp.cpp 46126 2009-11-24 14:18:46Z fingolfin $
 *
 */

#include <pspthreadman.h>

#include "common/scummsys.h"
#include "common/timer.h"
#include "backends/platform/psp/thread.h"
#include "backends/platform/psp/timer.h"

//#define __PSP_DEBUG_FUNCS__	/* For debugging function calls */
//#define __PSP_DEBUG_PRINT__	/* For debug printouts */

#include "backends/platform/psp/trace.h"

bool PspTimer::start() {
	DEBUG_ENTER_FUNC();
	
	if (!_interval || !_callback)
		return false;

	_threadId = sceKernelCreateThread("timerThread", thread, PRIORITY_TIMER_THREAD, STACK_TIMER_THREAD, THREAD_ATTR_USER, 0);

	if (_threadId < 0) {	// error
		PSP_ERROR("failed to create timer thread. Error code %d\n", _threadId);
		return false;
	}
	
	PspTimer *_this = this;	// trick to get into context when the thread starts
	_init = true;
	
	if (sceKernelStartThread(_threadId, sizeof(uint32 *), &_this) < 0) {
		PSP_ERROR("failed to start thread %d\n", _threadId);
		return false;
	}
	
	PSP_DEBUG_PRINT("created timer thread[%x]\n", _threadId);
	
	return true;
}

int PspTimer::thread(SceSize, void *__this) {
	DEBUG_ENTER_FUNC();
	PspTimer *_this = *(PspTimer **)__this;		// get our this for the context
	
	_this->timerThread();
	return 0;
};

void PspTimer::timerThread() {
	DEBUG_ENTER_FUNC();
	
	while (_init) {
		sceKernelDelayThread(_interval);
		PSP_DEBUG_PRINT("calling callback!\n");
		_callback();
	}
};