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leakstracer: Improve documentation for the element

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Also print a useful g_warning() message when leaks are detected.
This commit is contained in:
Nirbheek Chauhan 2019-06-19 03:42:46 +05:30 committed by Nirbheek Chauhan
parent 7cfdb23387
commit bafa7a5ca7
1 changed files with 19 additions and 5 deletions
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24
plugins/tracers/gstleaks.c
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@ -22,11 +22,25 @@
* SECTION:tracer-leaks
* @short_description: detect GstObject and GstMiniObject leaks
*
* A tracing module tracking the lifetime of objects by logging those still
* alive when program is exiting and raising a warning.
* The type of objects tracked can be filtered using the parameters of the
* tracer, for example:
* This tracing module tracks the lifetimes of #GstObject and #GstMiniObject
* objects and prints a list of leaks to the debug log under `GST_TRACER:7` when
* gst_deinit() is called, and also prints a g_warning().
*
* You can activate this tracer in the usual way by adding the string 'leaks'
* to the environment variable `GST_TRACERS`. Such as: `GST_TRACERS=leaks`
*
* Note that the values are separated by semicolon (`;`), such as:
* `GST_TRACERS=leaks;latency`, and multiple instances of the same tracer can be
* active at the same time.
*
* Parameters can also be passed to each tracer. The leaks tracer currently
* accepts three params:
* 1. filters: to filter which objects to record
* 2. check-refs: whether to record every location where a leaked object was
* reffed and unreffed
* 3. stack-traces-flags: full or none; see: #GstStackTraceFlags
*
* Examples:
* ```
* GST_TRACERS=leaks(filters="GstEvent,GstMessage",stack-traces-flags=full)
* ```
@ -620,7 +634,7 @@ gst_leaks_tracer_finalize (GObject * object)
g_queue_remove (&instances, self);
if (leaks)
g_warning ("Leaks detected");
g_warning ("Leaks detected and logged under GST_DEBUG=GST_TRACER:7");
((GObjectClass *) gst_leaks_tracer_parent_class)->finalize (object);
}