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pad: Don't leak user_data in gst_pad_start_task

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When the task already exists, we forgot to free the passed `user_data`.
This wasn't an issue for most C code, which doesn't pass a
`GDestroyNotify`, but bindings such as gstreamer-rs do!

That said, allocating a trampoline in gstreamer-rs just for it to get
thrown away again is awkward. Maybe we need a `gst_pad_resume_task`?

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3920>
This commit is contained in:
Jan Alexander Steffens (heftig) 2023-02-09 13:53:48 +01:00 committed by GStreamer Marge Bot
parent 5119ca25e4
commit aeb262a7e1
1 changed files with 5 additions and 0 deletions
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5
subprojects/gstreamer/gst/gstpad.c
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@ -6324,6 +6324,7 @@ gst_pad_start_task (GstPad * pad, GstTaskFunction func, gpointer user_data,
task = GST_PAD_TASK (pad);
if (task == NULL) {
task = gst_task_new (func, user_data, notify);
notify = NULL;
gst_task_set_lock (task, GST_PAD_GET_STREAM_LOCK (pad));
gst_task_set_enter_callback (task, pad_enter_thread, pad, NULL);
gst_task_set_leave_callback (task, pad_leave_thread, pad, NULL);
@ -6345,6 +6346,10 @@ gst_pad_start_task (GstPad * pad, GstTaskFunction func, gpointer user_data,
res = gst_task_set_state (task, GST_TASK_STARTED);
GST_OBJECT_UNLOCK (pad);
/* free user_data if it wasn't used for gst_task_new */
if (notify)
notify (user_data);
return res;
/* ERRORS */