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Optimize SDL_WaitEventTimeout() for the SDL_PollEvent() case 

There's no sense in doing all the setup for waiting if we're just polling.
This commit is contained in:
Cameron Gutman 2021-06-05 11:57:30 -05:00 committed by Sam Lantinga
parent 85b51e6c92
commit b992b915e5
1 changed files with 9 additions and 12 deletions
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21
src/events/SDL_events.c
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@ -866,26 +866,23 @@ int
SDL_WaitEventTimeout(SDL_Event * event, int timeout) SDL_WaitEventTimeout(SDL_Event * event, int timeout)
{ {
SDL_VideoDevice *_this = SDL_GetVideoDevice(); SDL_VideoDevice *_this = SDL_GetVideoDevice();
SDL_bool need_polling = SDL_events_need_polling(); SDL_Window *wakeup_window;
SDL_Window *wakeup_window = NULL;
Uint32 expiration = 0; Uint32 expiration = 0;
if (timeout > 0) if (timeout > 0)
expiration = SDL_GetTicks() + timeout; expiration = SDL_GetTicks() + timeout;
if (!need_polling && _this) { if (timeout != 0 && _this && _this->WaitEventTimeout && _this->SendWakeupEvent && !SDL_events_need_polling()) {
/* Look if a shown window is available to send the wakeup event. */ /* Look if a shown window is available to send the wakeup event. */
wakeup_window = SDL_find_active_window(_this); wakeup_window = SDL_find_active_window(_this);
need_polling = (wakeup_window == NULL); if (wakeup_window) {
} int status = SDL_WaitEventTimeout_Device(_this, wakeup_window, event, timeout);
if (!need_polling && _this && _this->WaitEventTimeout && _this->SendWakeupEvent) { /* There may be implementation-defined conditions where the backend cannot
int status = SDL_WaitEventTimeout_Device(_this, wakeup_window, event, timeout); reliably wait for the next event. If that happens, fall back to polling. */
if (status >= 0) {
/* There may be implementation-defined conditions where the backend cannot return status;
reliably wait for the next event. If that happens, fall back to polling */ }
if (status >= 0) {
return status;
} }
} }