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systemclock: Clarify comment that described a previous version of the code

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Nowadays we are only waking up the head entry waiting if either the head
entry is unscheduled (which is handled some lines above already), or
when the head entry specifically is woken up because a new entry became
the new head entry.

We're not waking up *all* entries anymore whenever any entry in the last
was unscheduled.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/500>
This commit is contained in:
Sebastian Dröge 2020-05-25 12:51:19 +03:00 committed by GStreamer Merge Bot
parent c4a2d92718
commit d9bf0f1ec2
1 changed files with 2 additions and 3 deletions
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5
gst/gstsystemclock.c
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@ -767,9 +767,8 @@ gst_system_clock_async_thread (GstClock * clock)
}
case GST_CLOCK_BUSY:
/* somebody unlocked the entry but is was not canceled, This means that
* either a new entry was added in front of the queue or some other entry
* was canceled. Whatever it is, pick the head entry of the list and
* continue waiting. */
* a new entry was added in front of the queue. Pick the new head
* entry of the list and continue waiting. */
GST_CAT_DEBUG_OBJECT (GST_CAT_CLOCK, clock,
"async entry %p needs restart", entry);