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memory: fix is_exclusive

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This commit is contained in:
Wim Taymans 2012-07-04 12:28:56 +02:00
parent 24cd0d055d
commit 4b322e37f8
1 changed files with 8 additions and 3 deletions
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11
gst/gstmemory.c
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@ -118,6 +118,7 @@ static GstAllocator *_default_allocator;
static GstAllocator *_default_mem_impl;
#define SHARE_ONE (1 << 16)
#define SHARE_MASK (~(SHARE_ONE - 1))
#define LOCK_ONE (GST_LOCK_FLAG_LAST)
#define FLAG_MASK (GST_LOCK_FLAG_LAST - 1)
#define LOCK_MASK ((SHARE_ONE - 1) - FLAG_MASK)
@ -437,15 +438,19 @@ gst_memory_new_wrapped (GstMemoryFlags flags, gpointer data,
* gst_memory_is_exclusive:
* @mem: a #GstMemory
*
* Check if the current ref to @mem is exclusive, this means that no other
* references exist other than @mem.
* Check if the current EXCLUSIVE lock on @mem is the only one, this means that
* changes to the object will not be visible to any other object.
*/
gboolean
gst_memory_is_exclusive (GstMemory * mem)
{
gint state;
g_return_val_if_fail (mem != NULL, FALSE);
return GST_MINI_OBJECT_REFCOUNT_VALUE (mem) == 1;
state = g_atomic_int_get (&mem->state);
return (state & SHARE_MASK) < 2;
}
/**