[Bug 750397] CRITICAL: Race condition in GstBus

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=750397

--- Comment #48 from Matt Gruenke <mgruenke at tycoint.com> ---
(In reply to Sebastian Dröge (slomo) from comment #46)

> Note also that making it blocking breaks the GstPoll API:
> gst_poll_read_control() is supposed to return FALSE when no bytes were there
> to be read (which it currently also does not always do because bugs, see
> above). As such, we should only really consider making it blocking if there
> is really really no other way around it.

I think attachment 330467 fixes that.

Please understand that, in spite of removing O_NONBLOCK, the intention is still
that RELEASE_EVENT() shouldn't block for any appreciable amount of time.  We
only avoid O_NONBLOCK to ensure the read() succeeds.

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