mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-11-27 04:01:08 +00:00
Code Issues 1 Projects Releases Wiki Activity

nlecomposition: Fix small remaining race in previous commit

Browse source 
The seek action might currently be handled (in which case it is not in
the actions list and the action lock is not locked), but not actually
handled completely yet (the seqnum is not stored yet).

To prevent this, we remember what the current action is that is being
handled, and also compare to that.

https://bugzilla.gnome.org/show_bug.cgi?id=774149
This commit is contained in:
Sebastian Dröge 2016-11-10 15:17:50 +02:00
parent d88cee856e
commit acfa0e9045
1 changed files with 26 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

32
plugins/nle/nlecomposition.c
View file

@ -105,6 +105,12 @@ typedef struct
NleUpdateStackReason reason;
} UpdateCompositionData;
typedef struct _Action
{
GCClosure closure;
gint priority;
} Action;
struct _NleCompositionPrivate
{
gboolean dispose_has_run;
@ -161,6 +167,7 @@ struct _NleCompositionPrivate
GMutex actions_lock;
GCond actions_cond;
GList *actions;
Action *current_action;
gboolean running;
gboolean initialized;
@ -181,12 +188,6 @@ struct _NleCompositionPrivate
NleUpdateStackReason updating_reason;
};
typedef struct _Action
{
GCClosure closure;
gint priority;
} Action;
#define ACTION_CALLBACK(__action) (((GCClosure*) (__action))->callback)
static guint _signals[LAST_SIGNAL] = { 0 };
@ -379,14 +380,19 @@ _execute_actions (NleComposition * comp)
lact = g_list_first (priv->actions);
priv->actions = g_list_remove_link (priv->actions, lact);
priv->current_action = lact->data;
ACTIONS_UNLOCK (comp);
GST_INFO_OBJECT (comp, "Invoking %p:%s",
lact->data, GST_DEBUG_FUNCPTR_NAME ((ACTION_CALLBACK (lact->data))));
g_closure_invoke (lact->data, NULL, 1, params, NULL);
g_value_unset (&params[0]);
ACTIONS_LOCK (comp);
g_closure_unref (lact->data);
g_list_free (lact);
priv->current_action = NULL;
ACTIONS_UNLOCK (comp);
GST_LOG_OBJECT (comp, "remaining actions [%d]",
g_list_length (priv->actions));
@ -852,6 +858,20 @@ _add_seek_action (NleComposition * comp, GstEvent * event)
}
}
/* Check if this seqnum is currently being handled */
if (comp->priv->current_action) {
Action *act = comp->priv->current_action;
if (ACTION_CALLBACK (act) == G_CALLBACK (_seek_pipeline_func)) {
SeekData *tmp_data = ((GClosure *) act)->data;
if (gst_event_get_seqnum (tmp_data->event) == seqnum) {
GST_DEBUG_OBJECT (comp,
"Not adding Action, same seqnum as previous seek");
ACTIONS_UNLOCK (comp);
return;
}
}
}
GST_DEBUG_OBJECT (comp, "Adding Action");