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gst/: Use parent refcount in GstMessage to ensure GstStructure consistency.

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Original commit message from CVS:
* gst/gstmessage.c: (_gst_message_copy), (_gst_message_free),
(gst_message_new), (gst_message_new_error),
(gst_message_new_warning), (gst_message_new_tag),
(gst_message_new_state_changed), (gst_message_new_application),
(gst_message_get_structure):
* gst/gstmessage.h:
* gst/gststructure.c: (gst_structure_set_parent_refcount),
(gst_structure_copy_conditional):
Use parent refcount in GstMessage to ensure GstStructure
consistency.
Cleaned up headers a bit.
This commit is contained in:
Wim Taymans 2005-04-21 09:33:31 +00:00
parent ee13415b38
commit f059bb2c54
4 changed files with 49 additions and 13 deletions
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15
ChangeLog
View file

@ -1,3 +1,18 @@
2005-04-21 Wim Taymans <wim@fluendo.com>
* gst/gstmessage.c: (_gst_message_copy), (_gst_message_free),
(gst_message_new), (gst_message_new_error),
(gst_message_new_warning), (gst_message_new_tag),
(gst_message_new_state_changed), (gst_message_new_application),
(gst_message_get_structure):
* gst/gstmessage.h:
* gst/gststructure.c: (gst_structure_set_parent_refcount),
(gst_structure_copy_conditional):
Use parent refcount in GstMessage to ensure GstStructure
consistency.
Cleaned up headers a bit.
2005-04-20 Wim Taymans <wim@fluendo.com>
* gst/base/gstbasesink.c: (gst_basesink_base_init),

25
gst/gstmessage.c
View file

@ -75,8 +75,11 @@ _gst_message_copy (GstMessage * message)
gst_object_ref (GST_MESSAGE_SRC (copy));
}
if (copy->structure)
copy->structure = gst_structure_copy (copy->structure);
if (message->structure) {
copy->structure = gst_structure_copy (message->structure);
gst_structure_set_parent_refcount (copy->structure,
&GST_DATA_REFCOUNT (message));
}
return copy;
}
@ -96,8 +99,10 @@ _gst_message_free (GstMessage * message)
GST_MESSAGE_UNLOCK (message);
}
if (message->structure)
if (message->structure) {
gst_structure_set_parent_refcount (message->structure, NULL);
gst_structure_free (message->structure);
}
_GST_DATA_DISPOSE (GST_DATA (message));
#ifndef GST_DISABLE_TRACE
@ -194,6 +199,7 @@ gst_message_new_error (GstObject * src, GError * error, gchar * debug)
message = gst_message_new (GST_MESSAGE_ERROR, src);
s = gst_structure_new ("GstMessageError", "gerror", G_TYPE_POINTER, error,
"debug", G_TYPE_STRING, debug, NULL);
gst_structure_set_parent_refcount (s, &GST_DATA_REFCOUNT (message));
message->structure = s;
return message;
@ -221,6 +227,7 @@ gst_message_new_warning (GstObject * src, GError * error, gchar * debug)
message = gst_message_new (GST_MESSAGE_WARNING, src);
s = gst_structure_new ("GstMessageWarning", "gerror", G_TYPE_POINTER, error,
"debug", G_TYPE_STRING, debug, NULL);
gst_structure_set_parent_refcount (s, &GST_DATA_REFCOUNT (message));
message->structure = s;
return message;
@ -242,7 +249,10 @@ gst_message_new_tag (GstObject * src, GstTagList * tag_list)
{
GstMessage *message;
g_return_val_if_fail (GST_IS_STRUCTURE (tag_list), NULL);
message = gst_message_new (GST_MESSAGE_TAG, src);
gst_structure_set_parent_refcount (tag_list, &GST_DATA_REFCOUNT (message));
message->structure = tag_list;
return message;
@ -271,6 +281,7 @@ gst_message_new_state_changed (GstObject * src, GstElementState old,
s = gst_structure_new ("GstMessageError", "old-state", G_TYPE_INT, (gint) old,
"new-state", G_TYPE_INT, (gint) new, NULL);
gst_structure_set_parent_refcount (s, &GST_DATA_REFCOUNT (message));
message->structure = s;
return message;
@ -293,7 +304,10 @@ gst_message_new_application (GstStructure * structure)
{
GstMessage *message;
g_return_val_if_fail (GST_IS_STRUCTURE (structure), NULL);
message = gst_message_new (GST_MESSAGE_APPLICATION, NULL);
gst_structure_set_parent_refcount (structure, &GST_DATA_REFCOUNT (message));
message->structure = structure;
return message;
@ -305,7 +319,9 @@ gst_message_new_application (GstStructure * structure)
*
* Access the structure of the message.
*
* Returns: The structure of the message, owned by the message.
* Returns: The structure of the message. The structure is still
* owned by the message, which means that you should not free it and
* that the pointer becomes invalid when you free the message.
*
* MT safe.
*/
@ -313,6 +329,7 @@ const GstStructure *
gst_message_get_structure (GstMessage * message)
{
g_return_val_if_fail (GST_IS_MESSAGE (message), NULL);
return message->structure;
}

16
gst/gstmessage.h
View file

@ -114,11 +114,12 @@ GType gst_message_get_type (void);
GstMessage * gst_message_new (GstMessageType type, GstObject * src);
/* refcounting */
#define gst_message_ref(ev) GST_MESSAGE (gst_data_ref (GST_DATA (ev)))
#define gst_message_ref_by_count(ev,c) GST_MESSAGE (gst_data_ref_by_count (GST_DATA (ev), c))
#define gst_message_unref(ev) gst_data_unref (GST_DATA (ev))
#define gst_message_ref(msg) GST_MESSAGE (gst_data_ref (GST_DATA (msg)))
#define gst_message_ref_by_count(msg,c) GST_MESSAGE (gst_data_ref_by_count (GST_DATA (msg), (c)))
#define gst_message_unref(msg) gst_data_unref (GST_DATA (msg))
/* copy message */
#define gst_message_copy(ev) GST_MESSAGE (gst_data_copy (GST_DATA (ev)))
#define gst_message_copy(msg) GST_MESSAGE (gst_data_copy (GST_DATA (msg)))
#define gst_message_copy_on_write(msg) GST_MESSAGE (gst_data_copy_on_write (GST_DATA (msg)))
GstMessage * gst_message_new_eos (GstObject * src);
GstMessage * gst_message_new_error (GstObject * src, GError * error, gchar * debug);
@ -128,13 +129,12 @@ GstMessage * gst_message_new_state_changed (GstObject * src, GstElementState ol
GstElementState new_state);
GstMessage * gst_message_new_application (GstStructure *structure);
const GstStructure * gst_message_get_structure (GstMessage *message);
void gst_message_parse_error (GstMessage *message, GError **gerror, gchar **debug);
void gst_message_parse_warning (GstMessage *message, GError **gerror, gchar **debug);
void gst_message_parse_tag (GstMessage *message, GstTagList **tag_list);
void gst_message_parse_state_changed (GstMessage *message, GstElementState *old_state,
GstElementState *new_state);
void gst_message_parse_error (GstMessage *message, GError **gerror, gchar **debug);
void gst_message_parse_warning (GstMessage *message, GError **gerror, gchar **debug);
const GstStructure * gst_message_get_structure (GstMessage *message);
G_END_DECLS

6
gst/gststructure.c
View file

@ -193,6 +193,10 @@ void
gst_structure_set_parent_refcount (GstStructure * structure,
GstAtomicInt * refcount)
{
g_return_if_fail (structure != NULL);
/* if we have a parent_refcount already, we can only clear
* if with a NULL refcount */
if (structure->parent_refcount)
g_return_if_fail (refcount == NULL);
else
@ -240,7 +244,7 @@ gst_structure_copy (const GstStructure * structure)
* @structure: the #GstStructure to free
*
* Frees a #GstStructure and all its fields and values. The structure must not
* parent when this function is called.
* have a parent when this function is called.
*/
void
gst_structure_free (GstStructure * structure)