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timer.cpp

/* 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 $
 *
 */

#if defined (__PSP__) 
#include <pspthreadman.h>

#include "common/scummsys.h"
#include "common/timer.h"
#include "backends/platform/psp/thread.h"
#include "backends/timer/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();
      }
};

#endif /* __PSP__ */

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