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bus: warn when message queue grows too much

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It usually means application is not handling messages causing memory
consumption to grow infinitely.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3313>
This commit is contained in:
Xavier Claessens 2024-02-15 09:18:20 -05:00 committed by GStreamer Marge Bot
parent 88412ef100
commit 350345150e
1 changed files with 10 additions and 1 deletions
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11
subprojects/gstreamer/gst/gstbus.c
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@ -97,6 +97,7 @@ enum
};
#define DEFAULT_ENABLE_ASYNC (TRUE)
#define WARN_QUEUE_SIZE 1024
enum
{
@ -376,7 +377,14 @@ gst_bus_post (GstBus * bus, GstMessage * message)
/* drop the message */
GST_DEBUG_OBJECT (bus, "[msg %p] dropped", message);
break;
case GST_BUS_PASS:
case GST_BUS_PASS:{
guint length = gst_atomic_queue_length (bus->priv->queue);
if (G_UNLIKELY (length > 0 && length % WARN_QUEUE_SIZE == 0)) {
GST_WARNING_OBJECT (bus, "queue overflows with %d messages. "
"Application is too slow or is not handling messages. "
"Please add a message handler, otherwise the queue will grow "
"infinitely.", length);
}
/* pass the message to the async queue, refcount passed in the queue */
GST_DEBUG_OBJECT (bus, "[msg %p] pushing on async queue", message);
gst_atomic_queue_push (bus->priv->queue, message);
@ -384,6 +392,7 @@ gst_bus_post (GstBus * bus, GstMessage * message)
GST_DEBUG_OBJECT (bus, "[msg %p] pushed on async queue", message);
break;
}
case GST_BUS_ASYNC:
{
/* async delivery, we need a mutex and a cond to block