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vblank: make schedule fallible 

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
This commit is contained in:
Yuxuan Shui 2024-01-29 22:07:04 +00:00
parent 1bfb129985
commit 5fba210ad6
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GPG Key ID: D3A4405BE6CC17F4
1 changed files with 10 additions and 6 deletions
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16
src/vblank.c
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@ -64,7 +64,7 @@ struct vblank_scheduler_ops {
size_t size;
void (*init)(struct vblank_scheduler *self);
void (*deinit)(struct vblank_scheduler *self);
void (*schedule)(struct vblank_scheduler *self);
bool (*schedule)(struct vblank_scheduler *self);
bool (*handle_x_events)(struct vblank_scheduler *self);
};
@ -240,7 +240,7 @@ cleanup:
return NULL;
}
static void sgi_video_sync_scheduler_schedule(struct vblank_scheduler *base) {
static bool sgi_video_sync_scheduler_schedule(struct vblank_scheduler *base) {
auto self = (struct sgi_video_sync_vblank_scheduler *)base;
log_verbose("Requesting vblank event for msc %d", self->last_msc + 1);
pthread_mutex_lock(&self->vblank_requested_mtx);
@ -248,6 +248,7 @@ static void sgi_video_sync_scheduler_schedule(struct vblank_scheduler *base) {
base->vblank_event_requested = true;
pthread_cond_signal(&self->vblank_requested_cnd);
pthread_mutex_unlock(&self->vblank_requested_mtx);
return true;
}
static void
@ -309,13 +310,14 @@ static void sgi_video_sync_scheduler_deinit(struct vblank_scheduler *base) {
}
#endif
static void present_vblank_scheduler_schedule(struct vblank_scheduler *base) {
static bool present_vblank_scheduler_schedule(struct vblank_scheduler *base) {
auto self = (struct present_vblank_scheduler *)base;
log_verbose("Requesting vblank event for window 0x%08x, msc %" PRIu64,
base->target_window, self->last_msc + 1);
assert(!base->vblank_event_requested);
x_request_vblank_event(base->c, base->target_window, self->last_msc + 1);
base->vblank_event_requested = true;
return true;
}
static void present_vblank_callback(EV_P attr_unused, ev_timer *w, int attr_unused revents) {
@ -440,17 +442,19 @@ static const struct vblank_scheduler_ops vblank_scheduler_ops[LAST_VBLANK_SCHEDU
#endif
};
static void vblank_scheduler_schedule_internal(struct vblank_scheduler *self) {
static bool vblank_scheduler_schedule_internal(struct vblank_scheduler *self) {
assert(self->type < LAST_VBLANK_SCHEDULER);
auto fn = vblank_scheduler_ops[self->type].schedule;
assert(fn != NULL);
fn(self);
return fn(self);
}
bool vblank_scheduler_schedule(struct vblank_scheduler *self,
vblank_callback_t vblank_callback, void *user_data) {
if (self->callback_count == 0 && self->wind_down == 0) {
vblank_scheduler_schedule_internal(self);
if (!vblank_scheduler_schedule_internal(self)) {
return false;
}
}
if (self->callback_count == self->callback_capacity) {
size_t new_capacity =