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registry: Cache element and typefind factories. Fixes 598896

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This avoids unneeded list/filtering if the registry hasn't changed
This commit is contained in:
Edward Hervey 2009-10-21 09:45:47 +02:00
parent ebee258806
commit c79ed99bab
1 changed files with 96 additions and 0 deletions
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96
gst/gstregistry.c
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@ -114,12 +114,24 @@
#include "gst-i18n-lib.h"
/* needed for fast retrieval of element and typefind factory lists */
extern GType gst_type_find_factory_get_type (void);
#define GST_TYPE_TYPE_FIND_FACTORY (gst_type_find_factory_get_type())
extern GType gst_element_factory_get_type (void);
#define GST_TYPE_ELEMENT_FACTORY (gst_element_factory_get_type())
#define GST_CAT_DEFAULT GST_CAT_REGISTRY
struct _GstRegistryPrivate
{
/* updated whenever the feature list changes */
guint32 cookie;
/* speedup for searching features */
GList *element_factory_list;
guint32 efl_cookie;
GList *typefind_factory_list;
guint32 tfl_cookie;
};
/* the one instance of the default registry and the mutex protecting the
@ -258,6 +270,16 @@ gst_registry_finalize (GObject * object)
g_hash_table_destroy (registry->basename_hash);
registry->basename_hash = NULL;
if (registry->private->element_factory_list) {
GST_DEBUG_OBJECT (registry, "Cleaning up cached element factory list");
gst_plugin_feature_list_free (registry->private->element_factory_list);
}
if (registry->private->typefind_factory_list) {
GST_DEBUG_OBJECT (registry, "Cleaning up cached typefind factory list");
gst_plugin_feature_list_free (registry->private->typefind_factory_list);
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
@ -584,6 +606,74 @@ gst_registry_plugin_filter (GstRegistry * registry,
return list;
}
/* returns TRUE if the list was changed
*
* Must be called with the object lock taken */
static gboolean
gst_registry_get_feature_list_or_create (GstRegistry * registry,
GList ** previous, guint32 * cookie, GType type)
{
gboolean res = FALSE;
GstRegistryPrivate *private = registry->private;
if (G_UNLIKELY (!*previous || private->cookie != *cookie)) {
GstTypeNameData data;
if (*previous)
gst_plugin_feature_list_free (*previous);
data.type = type;
data.name = NULL;
*previous =
gst_filter_run (registry->features,
(GstFilterFunc) gst_plugin_feature_type_name_filter, FALSE, &data);
g_list_foreach (*previous, (GFunc) gst_object_ref, NULL);
*cookie = private->cookie;
res = TRUE;
}
return res;
}
static GList *
gst_registry_get_element_factory_list (GstRegistry * registry)
{
GList *list;
GST_OBJECT_LOCK (registry);
gst_registry_get_feature_list_or_create (registry,
&registry->private->element_factory_list, &registry->private->efl_cookie,
GST_TYPE_ELEMENT_FACTORY);
/* Return reffed copy */
list = gst_plugin_feature_list_copy (registry->private->element_factory_list);
GST_OBJECT_UNLOCK (registry);
return list;
}
static GList *
gst_registry_get_typefind_factory_list (GstRegistry * registry)
{
GList *list;
GST_OBJECT_LOCK (registry);
gst_registry_get_feature_list_or_create (registry,
&registry->private->typefind_factory_list,
&registry->private->tfl_cookie, GST_TYPE_TYPE_FIND_FACTORY);
/* Return reffed copy */
list =
gst_plugin_feature_list_copy (registry->private->typefind_factory_list);
GST_OBJECT_UNLOCK (registry);
return list;
}
/**
* gst_registry_feature_filter:
* @registry: registry to query
@ -707,6 +797,12 @@ gst_registry_get_feature_list (GstRegistry * registry, GType type)
g_return_val_if_fail (GST_IS_REGISTRY (registry), NULL);
g_return_val_if_fail (g_type_is_a (type, GST_TYPE_PLUGIN_FEATURE), NULL);
/* Speed up */
if (type == GST_TYPE_ELEMENT_FACTORY)
return gst_registry_get_element_factory_list (registry);
else if (type == GST_TYPE_TYPE_FIND_FACTORY)
return gst_registry_get_typefind_factory_list (registry);
data.type = type;
data.name = NULL;