/* This is only called if the event thread is not running */
int SDL_SYS_TimerInit(void)
{
timer_alive = 1;
timer = SDL_CreateThread(RunTimer, NULL);
if ( timer == NULL )
return(-1);
return(SDL_SetTimerThreaded(1));
}
static int SDLCALL SDL_GobbleEvents(void *unused)
{
event_thread = SDL_ThreadID();
#ifdef __OS2__
#ifdef USE_DOSSETPRIORITY
/* Increase thread priority, so it will process events in time for sure! */
DosSetPriority(PRTYS_THREAD, PRTYC_REGULAR, +16, 0);
#endif
#endif
while ( SDL_EventQ.active ) {
SDL_VideoDevice *video = current_video;
SDL_VideoDevice *this = current_video;
/* Get events from the video subsystem */
if ( video ) {
video->PumpEvents(this);
}
/* Queue pending key-repeat events */
SDL_CheckKeyRepeat();
#if !SDL_JOYSTICK_DISABLED
/* Check for joystick state change */
if ( SDL_numjoysticks && (SDL_eventstate & SDL_JOYEVENTMASK) ) {
SDL_JoystickUpdate();
}
#endif
/* Give up the CPU for the rest of our timeslice */
SDL_EventLock.safe = 1;
if ( SDL_timer_running ) {
SDL_ThreadedTimerCheck();
}
SDL_Delay(1);
/* Check for event locking.
On the P of the lock mutex, if the lock is held, this thread
will wait until the lock is released before continuing. The
safe flag will be set, meaning that the other thread can go
about it's business. The safe flag is reset before the V,
so as soon as the mutex is free, other threads can see that
it's not safe to interfere with the event thread.
*/
SDL_mutexP(SDL_EventLock.lock);
SDL_EventLock.safe = 0;
SDL_mutexV(SDL_EventLock.lock);
}
SDL_SetTimerThreaded(0);
event_thread = 0;
return(0);
}
/* This is only called if the event thread is not running */
int SDL_SYS_TimerInit(void)
{
void *oldpile;
supervisor=SDL_FALSE;
/* Install RunTimer in vbl vector */
oldpile=(void *)Super(0);
timer_installed = !SDL_AtariVblInstall(RunTimer);
Super(oldpile);
if (!timer_installed) {
return(-1);
}
return(SDL_SetTimerThreaded(0));
}
static int SDLCALL SDL_GobbleEvents(void *unused)
{
event_thread = SDL_ThreadID();
#ifdef __OS2__
#ifdef USE_DOSSETPRIORITY
DosSetPriority(PRTYS_THREAD, PRTYC_REGULAR, +16, 0);
#endif
#endif
while ( SDL_EventQ.active ) {
SDL_VideoDevice *video = current_video;
SDL_VideoDevice *this = current_video;
if ( video ) {
video->PumpEvents(this);
}
SDL_CheckKeyRepeat();
#if !SDL_JOYSTICK_DISABLED
if ( SDL_numjoysticks && (SDL_eventstate & SDL_JOYEVENTMASK) ) {
SDL_JoystickUpdate();
}
#endif
SDL_EventLock.safe = 1;
if ( SDL_timer_running ) {
SDL_ThreadedTimerCheck();
}
SDL_Delay(1);
SDL_mutexP(SDL_EventLock.lock);
SDL_EventLock.safe = 0;
SDL_mutexV(SDL_EventLock.lock);
}
SDL_SetTimerThreaded(0);
event_thread = 0;
return(0);
}
/* This is only called if the event thread is not running */
int SDL_SYS_TimerInit(void)
{
void *old_stack;
SDL_MintAudio_CheckFpu();
/* Install RunTimer in vbl vector */
old_stack = (void *)Super(0);
timer_installed = !SDL_AtariVblInstall(SDL_ThreadedTimerCheck);
Super(old_stack);
if (!timer_installed) {
return(-1);
}
read_hz200_from_vbl = SDL_TRUE;
return(SDL_SetTimerThreaded(0));
}
int SDL_SYS_TimerInit(void)
{
MMRESULT result;
/* Set timer resolution */
result = timeBeginPeriod(TIMER_RESOLUTION);
if ( result != TIMERR_NOERROR ) {
SDL_SetError("Warning: Can't set %d ms timer resolution",
TIMER_RESOLUTION);
}
/* Allow 10 ms of drift so we don't chew on CPU */
timerID = timeSetEvent(TIMER_RESOLUTION,1,HandleAlarm,0,TIME_PERIODIC);
if ( ! timerID ) {
SDL_SetError("timeSetEvent() failed");
return(-1);
}
return(SDL_SetTimerThreaded(1));
}
static int SDLCALL
SDL_GobbleEvents(void *unused)
{
event_thread = SDL_ThreadID();
while (SDL_EventQ.active) {
SDL_VideoDevice *_this = SDL_GetVideoDevice();
/* Get events from the video subsystem */
if (_this) {
_this->PumpEvents(_this);
}
#if !SDL_JOYSTICK_DISABLED
/* Check for joystick state change */
if (SDL_numjoysticks && (SDL_eventstate & SDL_JOYEVENTMASK)) {
SDL_JoystickUpdate();
}
#endif
/* Give up the CPU for the rest of our timeslice */
SDL_EventLock.safe = 1;
if (SDL_timer_running) {
SDL_ThreadedTimerCheck();
}
SDL_Delay(1);
/* Check for event locking.
On the P of the lock mutex, if the lock is held, this thread
will wait until the lock is released before continuing. The
safe flag will be set, meaning that the other thread can go
about it's business. The safe flag is reset before the V,
so as soon as the mutex is free, other threads can see that
it's not safe to interfere with the event thread.
*/
SDL_mutexP(SDL_EventLock.lock);
SDL_EventLock.safe = 0;
SDL_mutexV(SDL_EventLock.lock);
}
SDL_SetTimerThreaded(0);
event_thread = 0;
return (0);
}
static int SDL_StartEventThread(Uint32 flags)
{
SDL_EventThread = NULL;
SDL_memset(&SDL_EventLock, 0, sizeof(SDL_EventLock));
#if !SDL_THREADS_DISABLED
SDL_EventQ.lock = SDL_CreateMutex();
if ( SDL_EventQ.lock == NULL ) {
#ifdef __MACOS__
;
#else
return(-1);
#endif
}
#endif
SDL_EventQ.active = 1;
if ( (flags&SDL_INIT_EVENTTHREAD) == SDL_INIT_EVENTTHREAD ) {
SDL_EventLock.lock = SDL_CreateMutex();
if ( SDL_EventLock.lock == NULL ) {
return(-1);
}
SDL_EventLock.safe = 0;
SDL_SetTimerThreaded(2);
#if (defined(__WIN32__) && !defined(_WIN32_WCE)) && !defined(HAVE_LIBC) && !defined(__SYMBIAN32__)
#undef SDL_CreateThread
SDL_EventThread = SDL_CreateThread(SDL_GobbleEvents, NULL, NULL, NULL);
#else
SDL_EventThread = SDL_CreateThread(SDL_GobbleEvents, NULL);
#endif
if ( SDL_EventThread == NULL ) {
return(-1);
}
} else {
event_thread = 0;
}
return(0);
}
static int SDL_StartEventThread(Uint32 flags)
{
/* Reset everything to zero */
SDL_EventThread = NULL;
SDL_memset(&SDL_EventLock, 0, sizeof(SDL_EventLock));
/* Create the lock and set ourselves active */
#if !SDL_THREADS_DISABLED
SDL_EventQ.lock = SDL_CreateMutex();
if ( SDL_EventQ.lock == NULL ) {
#ifdef __MACOS__ /* MacOS classic you can't multithread, so no lock needed */
;
#else
return(-1);
#endif
}
#endif /* !SDL_THREADS_DISABLED */
SDL_EventQ.active = 1;
if ( (flags&SDL_INIT_EVENTTHREAD) == SDL_INIT_EVENTTHREAD ) {
SDL_EventLock.lock = SDL_CreateMutex();
if ( SDL_EventLock.lock == NULL ) {
return(-1);
}
SDL_EventLock.safe = 0;
/* The event thread will handle timers too */
SDL_SetTimerThreaded(2);
#if (defined(__WIN32__) && !defined(_WIN32_WCE)) && !defined(HAVE_LIBC) && !defined(__SYMBIAN32__)
#undef SDL_CreateThread
SDL_EventThread = SDL_CreateThread(SDL_GobbleEvents, NULL, NULL, NULL);
#else
SDL_EventThread = SDL_CreateThread(SDL_GobbleEvents, NULL);
#endif
if ( SDL_EventThread == NULL ) {
return(-1);
}
} else {
event_thread = 0;
}
return(0);
}
int SDL_SYS_TimerInit(void)
{
// create a thread to process a threaded timers
// SetTimer does not suit the needs because
// TimerCallbackProc will be called only when WM_TIMER occured
timersQuitEvent = CreateEvent(0, TRUE, FALSE, 0);
if( !timersQuitEvent )
{
SDL_SetError("Cannot create event for timers thread");
return -1;
}
timersThread = CreateThread(NULL, 0, TimersThreadProc, 0, 0, 0);
if( !timersThread )
{
SDL_SetError("Cannot create timers thread, check amount of RAM available");
return -1;
}
SetThreadPriority(timersThread, THREAD_PRIORITY_HIGHEST);
return(SDL_SetTimerThreaded(1));
}
