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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED DUPLICATE - Wayland may have interface bug when multi-threads programing."
href="https://bugs.freedesktop.org/show_bug.cgi?id=91750#c6">Comment # 6</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED DUPLICATE - Wayland may have interface bug when multi-threads programing."
href="https://bugs.freedesktop.org/show_bug.cgi?id=91750">bug 91750</a>
from <span class="vcard"><a class="email" href="mailto:jadahl@gmail.com" title="Jonas Ådahl <jadahl@gmail.com>"> <span class="fn">Jonas Ådahl</span></a>
</span></b>
<pre>Yujie: as indirectly stated by Pekka, my example was incomplete. You would also
need to dispatch pending events before the wl_display_prepare_read(display)
call. This makes it, ignoring error handling, more or less:
wl_surface_attach();
while (wl_display_prepare_read_queue(display, queue) < 0)
wl_display_dispatch_queue_pending(display, queue);
window->callback = wl_surface_frame(window->surface);
wl_proxy_set_queue(window->callback,queue2);
wl_callback_add_listener(window->callback, &frame_listener, window);
wl_display_cancel_read(display);
wl_surface_commit(window->surface);
This has the side effect that events already in the queue will be always
dispatched before the frame is requested. This may have unwanted effects, so
please consider whether this is Ok in your architecture. If it is not, you need
to make sure that the above code is done after all events on the queue has been
dispatched.</pre>
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