Wait for activity on the file descriptors in @set. This function waits up to
the specified @timeout. A timeout of #GST_CLOCK_TIME_NONE waits forever.
For #GstPoll objects created with gst_poll_new(), this function can only be
called from a single thread at a time. If called from multiple threads,
-1 will be returned with errno set to EPERM.
This is not true for timer #GstPoll objects created with
gst_poll_new_timer(), where it is allowed to have multiple threads waiting
simultaneously.
The number of #GstPollFD in @set that have activity or 0 when no
activity was detected after @timeout. If an error occurs, -1 is returned
and errno is set.
Wait for activity on the file descriptors in @set. This function waits up to the specified @timeout. A timeout of #GST_CLOCK_TIME_NONE waits forever.
For #GstPoll objects created with gst_poll_new(), this function can only be called from a single thread at a time. If called from multiple threads, -1 will be returned with errno set to EPERM.
This is not true for timer #GstPoll objects created with gst_poll_new_timer(), where it is allowed to have multiple threads waiting simultaneously.