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client: Add an entry point for dispatching a queue without blocking

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On the client side EGL, all the wl_buffer.release events need to be
processed before buffer allocation, otherwise a third buffer might
be allocated unnecessarily. However, the buffer allocation should
not block in the case no event was received. In order to do that, a
non-blocking queue dispatch function is needed.
This commit is contained in:
Ander Conselvan de Oliveira 2012-11-22 15:34:48 +02:00 • committed by Kristian Høgsberg
parent 0f5d41e3bb
commit fb20507881
2 changed files with 21 additions and 0 deletions
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19
src/wayland-client.c
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@ -926,6 +926,25 @@ wl_display_dispatch_queue(struct wl_display *display,
return dispatch_queue(display, queue, 1);
}
/** Dispatch pending events in an event queue
*
* \param display The display context object
* \param queue The event queue to dispatch
* \return The number of dispatched events on success or -1 on failure
*
* Dispatch all incoming events for objects assigned to the given
* event queue. On failure -1 is returned and errno set appropriately.
* If there are no events queued, this functions return immediately.
*
* \memberof wl_display
*/
WL_EXPORT int
wl_display_dispatch_queue_pending(struct wl_display *display,
struct wl_event_queue *queue)
{
return dispatch_queue(display, queue, 0);
}
/** Process incoming events
*
* \param display The display context object