mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-15 22:28:10 +00:00
ce8c99bf62
svn-id: r15332
133 lines
3.4 KiB
C++
133 lines
3.4 KiB
C++
/* ScummVM - Scumm Interpreter
|
|
* Copyright (C) 2002-2004 The ScummVM project
|
|
*
|
|
* 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.
|
|
*
|
|
* $Header$
|
|
*/
|
|
|
|
#ifndef __MORPHOS__
|
|
|
|
#include "stdafx.h"
|
|
#include "common/scummsys.h"
|
|
#include "common/timer.h"
|
|
#include "common/util.h"
|
|
|
|
Timer *g_timer = NULL;
|
|
|
|
Timer::Timer(OSystem *system) :
|
|
_system(system),
|
|
_mutex(0),
|
|
_timerHandler(0),
|
|
_lastTime(0) {
|
|
|
|
_mutex = _system->createMutex();
|
|
|
|
g_timer = this;
|
|
|
|
for (int i = 0; i < MAX_TIMERS; i++) {
|
|
_timerSlots[i].procedure = NULL;
|
|
_timerSlots[i].interval = 0;
|
|
_timerSlots[i].counter = 0;
|
|
}
|
|
|
|
_thisTime = _system->getMillis();
|
|
|
|
// Set the timer last, after everything has been initialised
|
|
_system->setTimerCallback(&timer_handler, 10);
|
|
|
|
}
|
|
|
|
Timer::~Timer() {
|
|
// Remove the timer callback.
|
|
// Note: backends *must* gurantee that after this method call returns,
|
|
// the handler is not in use anymore; else race condtions could occurs.
|
|
_system->setTimerCallback(0, 0);
|
|
|
|
{
|
|
Common::StackLock lock(_mutex);
|
|
for (int i = 0; i < MAX_TIMERS; i++) {
|
|
_timerSlots[i].procedure = NULL;
|
|
_timerSlots[i].interval = 0;
|
|
_timerSlots[i].counter = 0;
|
|
}
|
|
}
|
|
|
|
_system->deleteMutex(_mutex);
|
|
}
|
|
|
|
int Timer::timer_handler(int t) {
|
|
if (g_timer)
|
|
return g_timer->handler(t);
|
|
return 0;
|
|
}
|
|
|
|
int Timer::handler(int t) {
|
|
Common::StackLock lock(_mutex);
|
|
uint32 interval, l;
|
|
|
|
_lastTime = _thisTime;
|
|
_thisTime = _system->getMillis();
|
|
interval = 1000 * (_thisTime - _lastTime);
|
|
|
|
for (l = 0; l < MAX_TIMERS; l++) {
|
|
if (_timerSlots[l].procedure && _timerSlots[l].interval > 0) {
|
|
_timerSlots[l].counter -= interval;
|
|
while (_timerSlots[l].counter <= 0) {
|
|
// A small paranoia check which catches the case where
|
|
// a timer removes itself (which it never should do).
|
|
assert(_timerSlots[l].procedure && _timerSlots[l].interval > 0);
|
|
_timerSlots[l].counter += _timerSlots[l].interval;
|
|
_timerSlots[l].procedure(_timerSlots[l].refCon);
|
|
}
|
|
}
|
|
}
|
|
|
|
return t;
|
|
}
|
|
|
|
bool Timer::installTimerProc(TimerProc procedure, int32 interval, void *refCon) {
|
|
assert(interval > 0);
|
|
Common::StackLock lock(_mutex);
|
|
|
|
for (int l = 0; l < MAX_TIMERS; l++) {
|
|
if (!_timerSlots[l].procedure) {
|
|
_timerSlots[l].procedure = procedure;
|
|
_timerSlots[l].interval = interval;
|
|
_timerSlots[l].counter = interval;
|
|
_timerSlots[l].refCon = refCon;
|
|
return true;
|
|
}
|
|
}
|
|
|
|
warning("Couldn't find free timer slot!");
|
|
return false;
|
|
}
|
|
|
|
void Timer::removeTimerProc(TimerProc procedure) {
|
|
Common::StackLock lock(_mutex);
|
|
|
|
for (int l = 0; l < MAX_TIMERS; l++) {
|
|
if (_timerSlots[l].procedure == procedure) {
|
|
_timerSlots[l].procedure = 0;
|
|
_timerSlots[l].interval = 0;
|
|
_timerSlots[l].counter = 1; // Work around a problem when a timer proc removes itself
|
|
_timerSlots[l].refCon = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif
|