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shmsink: fix indefinite wait after adding a new fd to the poll set

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If the second call to _wait blocks, we will not signal the condition
variable, so ensure that second call is not blocking.
See rationale and information in the linked bug:

https://bugzilla.gnome.org/show_bug.cgi?id=669697
This commit is contained in:
Vincent Penquerc'h 2012-02-08 21:21:47 +00:00
parent 0c5037072a
commit c835325536
1 changed files with 5 additions and 1 deletions
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6
sys/shm/gstshmsink.c
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@ -512,12 +512,15 @@ pollthread_func (gpointer data)
{
GstShmSink *self = GST_SHM_SINK (data);
GList *item;
GstClockTime timeout = GST_CLOCK_TIME_NONE;
while (!self->stop) {
if (gst_poll_wait (self->poll, GST_CLOCK_TIME_NONE) < 0)
if (gst_poll_wait (self->poll, timeout) < 0)
return NULL;
timeout = GST_CLOCK_TIME_NONE;
if (self->stop)
return NULL;
@ -561,6 +564,7 @@ pollthread_func (gpointer data)
functions on that new descriptor, so restart the loop, so _wait
will have been called on all elements of self->poll, whether
they have just been added or not. */
timeout = 0;
continue;
}