watchdog::watchdog(void)
{
m_do_exit = 0;
m_event = osd_event_alloc(1, 0);
m_thread = osd_thread_create(watchdog_thread, this);
m_timeout = 60 * osd_ticks_per_second();
}
int osd_work_item_wait(osd_work_item *item, osd_ticks_t timeout)
{
// if we're done already, just return
if (item->done)
return TRUE;
// if we don't have an event, create one
if (item->event == NULL)
item->event = osd_event_alloc(TRUE, FALSE); // manual reset, not signalled
else
osd_event_reset(item->event);
// if we don't have an event, we need to spin (shouldn't ever really happen)
if (item->event == NULL)
{
osd_ticks_t stopspin = osd_ticks() + timeout;
do {
int spin = 10000;
while (--spin && !item->done)
osd_yield_processor();
} while (!item->done && osd_ticks() < stopspin);
}
// otherwise, block on the event until done
else if (!item->done)
osd_event_wait(item->event, timeout);
// return TRUE if the refcount actually hit 0
return item->done;
}
int osd_work_item_wait(osd_work_item *item, osd_ticks_t timeout)
{
// if we're done already, just return
if (item->done)
return TRUE;
// if we don't have an event, create one
if (item->event == NULL)
{
INT32 lockslot = osd_scalable_lock_acquire(item->queue->lock);
item->event = osd_event_alloc(TRUE, FALSE); // manual reset, not signalled
osd_scalable_lock_release(item->queue->lock, lockslot);
}
else
osd_event_reset(item->event);
// if we don't have an event, we need to spin (shouldn't ever really happen)
if (item->event == NULL)
{
// TODO: do we need to measure the spin time here as well? and how can we do it?
spin_while(&item->done, 0, timeout);
}
// otherwise, block on the event until done
else if (!item->done)
osd_event_wait(item->event, timeout);
// return TRUE if the refcount actually hit 0
return item->done;
}
int sdl_window_info::window_init()
{
worker_param *wp = (worker_param *) osd_malloc(sizeof(worker_param));
int result;
ASSERT_MAIN_THREAD();
// set the initial maximized state
// FIXME: Does not belong here
sdl_options &options = downcast<sdl_options &>(m_machine.options());
m_startmaximized = options.maximize();
// add us to the list
*last_window_ptr = this;
last_window_ptr = &this->m_next;
set_renderer(draw.create(this));
// create an event that we can use to skip blitting
m_rendered_event = osd_event_alloc(FALSE, TRUE);
// load the layout
m_target = m_machine.render().target_alloc();
// set the specific view
set_starting_view(m_index, options.view(), options.view(m_index));
// make the window title
if (video_config.numscreens == 1)
sprintf(m_title, "%s: %s [%s]", emulator_info::get_appname(), m_machine.system().description, m_machine.system().name);
else
sprintf(m_title, "%s: %s [%s] - Screen %d", emulator_info::get_appname(), m_machine.system().description, m_machine.system().name, m_index);
wp->set_window(this);
// FIXME: pass error back in a different way
if (multithreading_enabled)
{
osd_work_item *wi;
wi = osd_work_item_queue(work_queue, &sdl_window_info::complete_create_wt, (void *) wp, 0);
sdlwindow_sync();
result = *((int *) (osd_work_item_result)(wi));
osd_work_item_release(wi);
}
else
result = *((int *) sdl_window_info::complete_create_wt((void *) wp, 0));
// handle error conditions
if (result == 1)
goto error;
return 0;
error:
destroy();
return 1;
}
osd_work_queue *osd_work_queue_alloc(int flags)
{
int threadnum;
int numprocs = effective_num_processors();
osd_work_queue *queue;
int osdthreadnum = 0;
int allocthreadnum;
char *osdworkqueuemaxthreads = osd_getenv(ENV_WORKQUEUEMAXTHREADS);
// allocate a new queue
queue = (osd_work_queue *)osd_malloc(sizeof(*queue));
if (queue == NULL)
goto error;
memset(queue, 0, sizeof(*queue));
// initialize basic queue members
queue->tailptr = (osd_work_item **)&queue->list;
queue->flags = flags;
// allocate events for the queue
queue->doneevent = osd_event_alloc(TRUE, TRUE); // manual reset, signalled
if (queue->doneevent == NULL)
goto error;
// initialize the critical section
queue->lock = osd_scalable_lock_alloc();
if (queue->lock == NULL)
goto error;
// determine how many threads to create...
// on a single-CPU system, create 1 thread for I/O queues, and 0 threads for everything else
if (numprocs == 1)
threadnum = (flags & WORK_QUEUE_FLAG_IO) ? 1 : 0;
// on an n-CPU system, create n-1 threads for multi queues, and 1 thread for everything else
else
threadnum = (flags & WORK_QUEUE_FLAG_MULTI) ? (numprocs - 1) : 1;
if (osdworkqueuemaxthreads != NULL && sscanf(osdworkqueuemaxthreads, "%d", &osdthreadnum) == 1 && threadnum > osdthreadnum)
threadnum = osdthreadnum;
// clamp to the maximum
queue->threads = MIN(threadnum, WORK_MAX_THREADS);
// allocate memory for thread array (+1 to count the calling thread if WORK_QUEUE_FLAG_MULTI)
if (flags & WORK_QUEUE_FLAG_MULTI)
allocthreadnum = queue->threads + 1;
else
allocthreadnum = queue->threads;
#if KEEP_STATISTICS
printf("osdprocs: %d effecprocs: %d threads: %d allocthreads: %d osdthreads: %d maxthreads: %d queuethreads: %d\n", osd_num_processors, numprocs, threadnum, allocthreadnum, osdthreadnum, WORK_MAX_THREADS, queue->threads);
#endif
queue->thread = (work_thread_info *)osd_malloc_array(allocthreadnum * sizeof(queue->thread[0]));
if (queue->thread == NULL)
goto error;
memset(queue->thread, 0, allocthreadnum * sizeof(queue->thread[0]));
// iterate over threads
for (threadnum = 0; threadnum < queue->threads; threadnum++)
{
work_thread_info *thread = &queue->thread[threadnum];
// set a pointer back to the queue
thread->queue = queue;
// create the per-thread wake event
thread->wakeevent = osd_event_alloc(FALSE, FALSE); // auto-reset, not signalled
if (thread->wakeevent == NULL)
goto error;
// create the thread
thread->handle = osd_thread_create(worker_thread_entry, thread);
if (thread->handle == NULL)
goto error;
// set its priority: I/O threads get high priority because they are assumed to be
// blocked most of the time; other threads just match the creator's priority
if (flags & WORK_QUEUE_FLAG_IO)
osd_thread_adjust_priority(thread->handle, 1);
else
osd_thread_adjust_priority(thread->handle, 0);
}
// start a timer going for "waittime" on the main thread
if (flags & WORK_QUEUE_FLAG_MULTI)
{
begin_timing(queue->thread[queue->threads].waittime);
}
return queue;
error:
osd_work_queue_free(queue);
return NULL;
}
int sdlwindow_video_window_create(running_machine &machine, int index, sdl_monitor_info *monitor, const sdl_window_config *config)
{
sdl_window_info *window;
worker_param *wp = (worker_param *) osd_malloc(sizeof(worker_param));
int result;
ASSERT_MAIN_THREAD();
clear_worker_param(wp);
// allocate a new window object
window = global_alloc_clear(sdl_window_info);
window->maxwidth = config->width;
window->maxheight = config->height;
window->depth = config->depth;
window->refresh = config->refresh;
window->monitor = monitor;
window->m_machine = &machine;
window->index = index;
//FIXME: these should be per_window in config-> or even better a bit set
window->fullscreen = !video_config.windowed;
window->prescale = video_config.prescale;
// set the initial maximized state
// FIXME: Does not belong here
sdl_options &options = downcast<sdl_options &>(machine.options());
window->startmaximized = options.maximize();
if (!window->fullscreen)
{
window->windowed_width = config->width;
window->windowed_height = config->height;
}
window->totalColors = config->totalColors;
// add us to the list
*last_window_ptr = window;
last_window_ptr = &window->next;
draw.attach(&draw, window);
// create an event that we can use to skip blitting
window->rendered_event = osd_event_alloc(FALSE, TRUE);
// load the layout
window->target = machine.render().target_alloc();
// set the specific view
set_starting_view(machine, index, window, options.view(), options.view(index));
// make the window title
if (video_config.numscreens == 1)
sprintf(window->title, "%s: %s [%s]", emulator_info::get_appname(), machine.system().description, machine.system().name);
else
sprintf(window->title, "%s: %s [%s] - Screen %d", emulator_info::get_appname(), machine.system().description, machine.system().name, index);
wp->window = window;
if (multithreading_enabled)
{
osd_work_item *wi;
wi = osd_work_item_queue(work_queue, &complete_create_wt, (void *) wp, 0);
sdlwindow_sync();
result = *((int *) (osd_work_item_result)(wi));
osd_work_item_release(wi);
}
else
result = *((int *) complete_create_wt((void *) wp, 0));
// handle error conditions
if (result == 1)
goto error;
return 0;
error:
sdlwindow_video_window_destroy(machine, window);
return 1;
}
osd_work_queue *osd_work_queue_alloc(int flags)
{
int numprocs = effective_num_processors();
osd_work_queue *queue;
int threadnum;
// allocate a new queue
queue = (osd_work_queue *)osd_malloc(sizeof(*queue));
if (queue == NULL)
goto error;
memset(queue, 0, sizeof(*queue));
// initialize basic queue members
queue->tailptr = (osd_work_item **)&queue->list;
queue->flags = flags;
// allocate events for the queue
queue->doneevent = osd_event_alloc(TRUE, TRUE); // manual reset, signalled
if (queue->doneevent == NULL)
goto error;
// initialize the critical section
queue->lock = osd_scalable_lock_alloc();
if (queue->lock == NULL)
goto error;
// determine how many threads to create...
// on a single-CPU system, create 1 thread for I/O queues, and 0 threads for everything else
if (numprocs == 1)
queue->threads = (flags & WORK_QUEUE_FLAG_IO) ? 1 : 0;
// on an n-CPU system, create (n-1) threads for multi queues, and 1 thread for everything else
else
queue->threads = (flags & WORK_QUEUE_FLAG_MULTI) ? (numprocs - 1) : 1;
// clamp to the maximum
queue->threads = MIN(queue->threads, WORK_MAX_THREADS);
// allocate memory for thread array (+1 to count the calling thread)
queue->thread = (work_thread_info *)osd_malloc_array((queue->threads + 1) * sizeof(queue->thread[0]));
if (queue->thread == NULL)
goto error;
memset(queue->thread, 0, (queue->threads + 1) * sizeof(queue->thread[0]));
// iterate over threads
for (threadnum = 0; threadnum < queue->threads; threadnum++)
{
work_thread_info *thread = &queue->thread[threadnum];
// set a pointer back to the queue
thread->queue = queue;
// create the per-thread wake event
thread->wakeevent = osd_event_alloc(FALSE, FALSE); // auto-reset, not signalled
if (thread->wakeevent == NULL)
goto error;
// create the thread
thread->handle = osd_thread_create(worker_thread_entry, thread);
if (thread->handle == NULL)
goto error;
// set its priority: I/O threads get high priority because they are assumed to be
// blocked most of the time; other threads just match the creator's priority
if (flags & WORK_QUEUE_FLAG_IO)
osd_thread_adjust_priority(thread->handle, 1);
else
osd_thread_adjust_priority(thread->handle, 0);
// Bind main thread to cpu 0
osd_thread_cpu_affinity(NULL, effective_cpu_mask(0));
if (flags & WORK_QUEUE_FLAG_IO)
osd_thread_cpu_affinity(thread->handle, effective_cpu_mask(1));
else
osd_thread_cpu_affinity(thread->handle, effective_cpu_mask(2+threadnum) );
}
// start a timer going for "waittime" on the main thread
begin_timing(queue->thread[queue->threads].waittime);
return queue;
error:
osd_work_queue_free(queue);
return NULL;
}
int sdlwindow_video_window_create(running_machine *machine, int index, sdl_monitor_info *monitor, const sdl_window_config *config)
{
sdl_window_info *window;
worker_param *wp = malloc(sizeof(worker_param));
char option[20];
int result;
ASSERT_MAIN_THREAD();
clear_worker_param(wp);
// allocate a new window object
window = alloc_or_die(sdl_window_info);
memset(window, 0, sizeof(*window));
window->maxwidth = config->width;
window->maxheight = config->height;
window->depth = config->depth;
window->refresh = config->refresh;
window->monitor = monitor;
window->machine = machine;
window->index = index;
//FIXME: these should be per_window in config-> or even better a bit set
window->fullscreen = !video_config.windowed;
window->prescale = video_config.prescale;
window->prescale_effect = video_config.prescale_effect;
window->scale_mode = video_config.scale_mode;
// set the initial maximized state
// FIXME: Does not belong here
window->startmaximized = options_get_bool(mame_options(), SDLOPTION_MAXIMIZE);
if (!window->fullscreen)
{
window->windowed_width = config->width;
window->windowed_height = config->height;
}
window->totalColors = config->totalColors;
// add us to the list
*last_window_ptr = window;
last_window_ptr = &window->next;
draw.attach(&draw, window);
// create an event that we can use to skip blitting
window->rendered_event = osd_event_alloc(FALSE, TRUE);
// load the layout
window->target = render_target_alloc(machine, NULL, FALSE);
if (window->target == NULL)
goto error;
// set the specific view
sprintf(option, SDLOPTION_VIEW("%d"), index);
set_starting_view(machine, index, window, options_get_string(mame_options(), option));
// make the window title
if (video_config.numscreens == 1)
sprintf(window->title, APPNAME ": %s [%s]", machine->gamedrv->description, machine->gamedrv->name);
else
sprintf(window->title, APPNAME ": %s [%s] - Screen %d", machine->gamedrv->description, machine->gamedrv->name, index);
wp->window = window;
if (multithreading_enabled)
{
osd_work_item *wi;
wi = osd_work_item_queue(work_queue, &complete_create_wt, (void *) wp, 0);
sdlwindow_sync();
result = *((int *) (osd_work_item_result)(wi));
osd_work_item_release(wi);
}
else
result = *((int *) complete_create_wt((void *) wp, 0));
// handle error conditions
if (result == 1)
goto error;
return 0;
error:
sdlwindow_video_window_destroy(machine, window);
return 1;
}