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gstregistry: Add a cookie for detecting feature list changes

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We also create a private structure, since we will need to add more
data there in following patches.
This commit is contained in:
Edward Hervey 2009-10-24 10:05:59 +02:00
parent db79dd88c3
commit 9e792ee5b8
2 changed files with 18 additions and 1 deletions
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14
gst/gstregistry.c
View file

@ -116,6 +116,12 @@
#define GST_CAT_DEFAULT GST_CAT_REGISTRY
struct _GstRegistryPrivate
{
/* updated whenever the feature list changes */
guint32 cookie;
};
/* the one instance of the default registry and the mutex protecting the
* variable. */
static GStaticMutex _gst_registry_mutex = G_STATIC_MUTEX_INIT;
@ -166,6 +172,7 @@ gst_registry_class_init (GstRegistryClass * klass)
gobject_class = (GObjectClass *) klass;
parent_class = g_type_class_peek_parent (klass);
g_type_class_add_private (klass, sizeof (GstRegistryPrivate));
/**
* GstRegistry::plugin-added:
@ -201,6 +208,9 @@ gst_registry_init (GstRegistry * registry)
{
registry->feature_hash = g_hash_table_new (g_str_hash, g_str_equal);
registry->basename_hash = g_hash_table_new (g_str_hash, g_str_equal);
registry->private =
G_TYPE_INSTANCE_GET_PRIVATE (registry, GST_TYPE_REGISTRY,
GstRegistryPrivate);
}
static void
@ -425,6 +435,7 @@ gst_registry_remove_features_for_plugin_unlocked (GstRegistry * registry,
}
f = next;
}
registry->private->cookie++;
}
/**
@ -500,6 +511,8 @@ gst_registry_add_feature (GstRegistry * registry, GstPluginFeature * feature)
}
gst_object_ref_sink (feature);
registry->private->cookie++;
GST_OBJECT_UNLOCK (registry);
GST_LOG_OBJECT (registry, "emitting feature-added for %s", feature->name);
@ -529,6 +542,7 @@ gst_registry_remove_feature (GstRegistry * registry, GstPluginFeature * feature)
GST_OBJECT_LOCK (registry);
registry->features = g_list_remove (registry->features, feature);
g_hash_table_remove (registry->feature_hash, feature->name);
registry->private->cookie++;
GST_OBJECT_UNLOCK (registry);
gst_object_unref (feature);
}

5
gst/gstregistry.h
View file

@ -39,6 +39,7 @@ G_BEGIN_DECLS
typedef struct _GstRegistry GstRegistry;
typedef struct _GstRegistryClass GstRegistryClass;
typedef struct _GstRegistryPrivate GstRegistryPrivate;
/**
* GstRegistry:
@ -62,8 +63,10 @@ struct _GstRegistry {
/* hash to speedup _lookup */
GHashTable *basename_hash;
GstRegistryPrivate *private;
/*< private >*/
gpointer _gst_reserved[GST_PADDING-2];
gpointer _gst_reserved[GST_PADDING-3];
};
struct _GstRegistryClass {