*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
*/
/**
* SECTION:gstminiobject
*
* A weak reference can be added and remove with gst_mini_object_weak_ref()
* and gst_mini_object_weak_unref() respectively.
- *
- * Last reviewed on 2012-06-15 (0.11.93)
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#include "gst/gstinfo.h"
#include <gobject/gvaluecollector.h>
-#ifndef GST_DISABLE_TRACE
-#include "gsttrace.h"
-static GstAllocTrace *_gst_mini_object_trace;
-#endif
-
/* Mutex used for weak referencing */
G_LOCK_DEFINE_STATIC (qdata_mutex);
static GQuark weak_ref_quark;
#define SHARE_ONE (1 << 16)
+#define SHARE_TWO (2 << 16)
#define SHARE_MASK (~(SHARE_ONE - 1))
+#define IS_SHARED(state) (state >= SHARE_TWO)
#define LOCK_ONE (GST_LOCK_FLAG_LAST)
#define FLAG_MASK (GST_LOCK_FLAG_LAST - 1)
#define LOCK_MASK ((SHARE_ONE - 1) - FLAG_MASK)
_priv_gst_mini_object_initialize (void)
{
weak_ref_quark = g_quark_from_static_string ("GstMiniObjectWeakRefQuark");
-
-#ifndef GST_DISABLE_TRACE
- _gst_mini_object_trace = _gst_alloc_trace_register ("GstMiniObject", 0);
-#endif
}
/**
* gst_mini_object_init: (skip)
* @mini_object: a #GstMiniObject
+ * @flags: initial #GstMiniObjectFlags
* @type: the #GType of the mini-object to create
- * @copy_func: the copy function, or NULL
- * @dispose_func: the dispose function, or NULL
- * @free_func: the free function or NULL
+ * @copy_func: (allow-none): the copy function, or %NULL
+ * @dispose_func: (allow-none): the dispose function, or %NULL
+ * @free_func: (allow-none): the free function or %NULL
*
* Initializes a mini-object with the desired type and copy/dispose/free
* functions.
{
mini_object->type = type;
mini_object->refcount = 1;
- mini_object->lockstate =
- (flags & GST_MINI_OBJECT_FLAG_LOCK_READONLY ? GST_LOCK_FLAG_READ : 0);
+ mini_object->lockstate = 0;
mini_object->flags = flags;
mini_object->copy = copy_func;
mini_object->n_qdata = 0;
mini_object->qdata = NULL;
-#ifndef GST_DISABLE_TRACE
- _gst_alloc_trace_new (_gst_mini_object_trace, mini_object);
-#endif
+ GST_TRACER_MINI_OBJECT_CREATED (mini_object);
}
/**
- * gst_mini_object_copy:
+ * gst_mini_object_copy: (skip)
* @mini_object: the mini-object to copy
*
* Creates a copy of the mini-object.
g_return_val_if_fail (object != NULL, FALSE);
g_return_val_if_fail (GST_MINI_OBJECT_IS_LOCKABLE (object), FALSE);
+ if (G_UNLIKELY (object->flags & GST_MINI_OBJECT_FLAG_LOCK_READONLY &&
+ flags & GST_LOCK_FLAG_WRITE))
+ return FALSE;
+
do {
access_mode = flags & FLAG_MASK;
newstate = state = g_atomic_int_get (&object->lockstate);
access_mode &= ~GST_LOCK_FLAG_EXCLUSIVE;
}
+ /* shared counter > 1 and write access is not allowed */
+ if (((state & GST_LOCK_FLAG_WRITE) != 0
+ || (access_mode & GST_LOCK_FLAG_WRITE) != 0)
+ && IS_SHARED (newstate))
+ goto lock_failed;
+
if (access_mode) {
if ((state & LOCK_FLAG_MASK) == 0) {
- /* shared counter > 1 and write access */
- if (state > SHARE_ONE && access_mode & GST_LOCK_FLAG_WRITE)
- goto lock_failed;
/* nothing mapped, set access_mode */
newstate |= access_mode;
} else {
* Modification of a mini-object should only be done after verifying that it
* is writable.
*
- * Returns: TRUE if the object is writable.
+ * Returns: %TRUE if the object is writable.
*/
gboolean
gst_mini_object_is_writable (const GstMiniObject * mini_object)
g_return_val_if_fail (mini_object != NULL, FALSE);
if (GST_MINI_OBJECT_IS_LOCKABLE (mini_object)) {
- result = (g_atomic_int_get (&mini_object->lockstate) & SHARE_MASK) < 2;
+ result = !IS_SHARED (g_atomic_int_get (&mini_object->lockstate));
} else {
result = (GST_MINI_OBJECT_REFCOUNT_VALUE (mini_object) == 1);
}
}
/**
- * gst_mini_object_make_writable:
+ * gst_mini_object_make_writable: (skip)
* @mini_object: (transfer full): the mini-object to make writable
*
* Checks if a mini-object is writable. If not, a writable copy is made and
}
/**
- * gst_mini_object_ref:
+ * gst_mini_object_ref: (skip)
* @mini_object: the mini-object
*
* Increase the reference count of the mini-object.
*
- * Note that the refcount affects the writeability
+ * Note that the refcount affects the writability
* of @mini-object, see gst_mini_object_is_writable(). It is
* important to note that keeping additional references to
* GstMiniObject instances can potentially increase the number
}
/**
- * gst_mini_object_unref:
+ * gst_mini_object_unref: (skip)
* @mini_object: the mini-object
*
* Decreases the reference count of the mini-object, possibly freeing
call_finalize_notify (mini_object);
g_free (mini_object->qdata);
}
-#ifndef GST_DISABLE_TRACE
- _gst_alloc_trace_free (_gst_mini_object_trace, mini_object);
-#endif
+ GST_TRACER_MINI_OBJECT_DESTROYED (mini_object);
if (mini_object->free)
mini_object->free (mini_object);
}
/**
* gst_mini_object_replace:
- * @olddata: (inout) (transfer full): pointer to a pointer to a mini-object to
- * be replaced
- * @newdata: pointer to new mini-object
+ * @olddata: (inout) (transfer full) (nullable): pointer to a pointer to a
+ * mini-object to be replaced
+ * @newdata: (allow-none): pointer to new mini-object
*
* Atomically modifies a pointer to point to a new mini-object.
* The reference count of @olddata is decreased and the reference count of
* @newdata is increased.
*
- * Either @newdata and the value pointed to by @olddata may be NULL.
+ * Either @newdata and the value pointed to by @olddata may be %NULL.
*
- * Returns: TRUE if @newdata was different from @olddata
+ * Returns: %TRUE if @newdata was different from @olddata
*/
gboolean
gst_mini_object_replace (GstMiniObject ** olddata, GstMiniObject * newdata)
}
/**
- * gst_mini_object_steal:
+ * gst_mini_object_steal: (skip)
* @olddata: (inout) (transfer full): pointer to a pointer to a mini-object to
* be stolen
*
- * Replace the current #GstMiniObject pointer to by @olddata with NULL and
+ * Replace the current #GstMiniObject pointer to by @olddata with %NULL and
* return the old value.
*
* Returns: the #GstMiniObject at @oldata
* except that it does not increase the refcount of @newdata and thus
* takes ownership of @newdata.
*
- * Either @newdata and the value pointed to by @olddata may be NULL.
+ * Either @newdata and the value pointed to by @olddata may be %NULL.
*
- * Returns: TRUE if @newdata was different from @olddata
+ * Returns: %TRUE if @newdata was different from @olddata
*/
gboolean
gst_mini_object_take (GstMiniObject ** olddata, GstMiniObject * newdata)
if ((i = find_notify (object, weak_ref_quark, TRUE, notify, data)) != -1) {
remove_notify (object, i);
} else {
- g_warning ("%s: couldn't find weak ref %p(%p)", G_STRFUNC, notify, data);
+ g_warning ("%s: couldn't find weak ref %p (object:%p data:%p)", G_STRFUNC,
+ notify, object, data);
}
G_UNLOCK (qdata_mutex);
}
* needs to be freed
*
* This sets an opaque, named pointer on a miniobject.
- * The name is specified through a #GQuark (retrived e.g. via
+ * The name is specified through a #GQuark (retrieved e.g. via
* g_quark_from_static_string()), and the pointer
* can be gotten back from the @object with gst_mini_object_get_qdata()
* until the @object is disposed.
* Setting a previously set user data pointer, overrides (frees)
- * the old pointer set, using #NULL as pointer essentially
+ * the old pointer set, using %NULL as pointer essentially
* removes the data stored.
*
* @destroy may be specified which is called with @data as argument
* This function gets back user data pointers stored via
* gst_mini_object_set_qdata().
*
- * Returns: (transfer none): The user data pointer set, or %NULL
+ * Returns: (transfer none) (nullable): The user data pointer set, or
+ * %NULL
*/
gpointer
gst_mini_object_get_qdata (GstMiniObject * object, GQuark quark)
* and removes the data from @object without invoking its destroy() function (if
* any was set).
*
- * Returns: (transfer full): The user data pointer set, or %NULL
+ * Returns: (transfer full) (nullable): The user data pointer set, or
+ * %NULL
*/
gpointer
gst_mini_object_steal_qdata (GstMiniObject * object, GQuark quark)
projects / platform / upstream / gstreamer.git / blobdiff