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tracers: Add tracepoint when a plugin feature it loaded

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This makes it possible to trace which ones are loaded in a specific
program to make nice statistics.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/782>
This commit is contained in:
Olivier Crête 2021-04-23 15:34:26 -04:00
parent 2b01467934
commit 8332b44a2a
3 changed files with 32 additions and 1 deletions
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2
gst/gstpluginfeature.c
View file

@ -124,6 +124,8 @@ gst_plugin_feature_load (GstPluginFeature * feature)
else if (!real_feature->loaded)
goto not_found;
GST_TRACER_PLUGIN_FEATURE_LOADED (real_feature);
return real_feature;
/* ERRORS */

2
gst/gsttracerutils.c
View file

@ -54,7 +54,7 @@ static const gchar *_quark_strings[] = {
"element-change-state-pre", "element-change-state-post",
"mini-object-created", "mini-object-destroyed", "object-created",
"object-destroyed", "mini-object-reffed", "mini-object-unreffed",
"object-reffed", "object-unreffed",
"object-reffed", "object-unreffed", "plugin-feature-loaded"
};
GQuark _priv_gst_tracer_quark_table[GST_TRACER_QUARK_MAX];

29
gst/gsttracerutils.h
View file

@ -79,6 +79,7 @@ typedef enum /*< skip >*/
GST_TRACER_QUARK_HOOK_MINI_OBJECT_UNREFFED,
GST_TRACER_QUARK_HOOK_OBJECT_REFFED,
GST_TRACER_QUARK_HOOK_OBJECT_UNREFFED,
GST_TRACER_QUARK_HOOK_PLUGIN_FEATURE_LOADED,
GST_TRACER_QUARK_MAX
} GstTracerQuarkId;
@ -689,11 +690,38 @@ typedef void (*GstTracerHookObjectCreated) (GObject *self, GstClockTime ts,
*/
typedef void (*GstTracerHookObjectDestroyed) (GObject *self, GstClockTime ts,
GstObject *object);
#define GST_TRACER_OBJECT_DESTROYED(object) G_STMT_START{ \
GST_TRACER_DISPATCH(GST_TRACER_QUARK(HOOK_OBJECT_DESTROYED), \
GstTracerHookObjectDestroyed, (GST_TRACER_ARGS, object)); \
}G_STMT_END
/**
* GstTracerHookPluginFeatureLoaded:
* @self: the tracer instance
* @ts: the current timestamp
* @feature: the plugin feature that was loaded
*
* Hook called when a GstPluginFeature is loaded named
* "plugin-feature-loaded".
*
* Since: 1.20
*/
typedef void (*GstTracerHookPluginFeatureLoaded) (GObject *self, GstClockTime ts,
GstPluginFeature *feature);
/**
* GST_TRACER_PLUGIN_FEATURE_LOADED:
* @feature: The feature that this tracer is called for
*
* Add a tracepoint when a plugin feature is loaded.
*
* Since: 1.20
*/
#define GST_TRACER_PLUGIN_FEATURE_LOADED(feature) G_STMT_START{ \
GST_TRACER_DISPATCH(GST_TRACER_QUARK(HOOK_PLUGIN_FEATURE_LOADED), \
GstTracerHookPluginFeatureLoaded, (GST_TRACER_ARGS, feature)); \
}G_STMT_END
#else /* !GST_DISABLE_GST_TRACER_HOOKS */
@ -743,6 +771,7 @@ _priv_gst_tracing_deinit (void)
#define GST_TRACER_OBJECT_DESTROYED(object)
#define GST_TRACER_OBJECT_REFFED(object, new_refcount)
#define GST_TRACER_OBJECT_UNREFFED(object, new_refcount)
#define GST_TRACER_PLUGIN_FEATURE_LOADED(feature)
#endif /* GST_DISABLE_GST_TRACER_HOOKS */