[Wayland-bugs] [Bug 91767] wl_display_dispatch(_queue) documentation about thread safeness is probably wrong

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91767

--- Comment #3 from Marek Chalupa <mchqwerty at gmail.com> ---

> If you call prepare + poll + read in thread A and
> wl_display_dispatch_queue() in another thread B (dispatching two different
> queues), the fd could become readable before wl_display_dispatch_queue()
> calls poll
> (http://cgit.freedesktop.org/wayland/wayland/tree/src/wayland-client.
> c#n1574) and whole prepare+read sequence could run before it, queing events
> into both queues. After prepare+read queued events, thread B goes to sleep
> in poll with events hanging in the queue.

Oh, wait, dispatching queue and increasing reader_count is atomical in
wl_display_dispatch_queue(), so the thread A should not events, so it should
probably work

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