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intel: Allow intel_region_reference() with *dst != NULL.

Browse source 
This should help us avoid leaking regions in region reference code by
making the API more predictable.

Reviewed-by: Chad Versace <chad@chad-versace.us>
(cherry picked from commit 036b74a7f8)
(cherry picked from commit d8f65c07e9)
This commit is contained in:
Eric Anholt 2011-06-29 11:09:49 -07:00
parent 5a7d1c9710
commit e3e99be131
1 changed files with 8 additions and 5 deletions
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13
src/mesa/drivers/dri/intel/intel_regions.c
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@ -264,12 +264,15 @@ intel_region_alloc_for_handle(struct intel_screen *screen,
void
intel_region_reference(struct intel_region **dst, struct intel_region *src)
{
if (src)
_DBG("%s %p %d\n", __FUNCTION__, src, src->refcount);
_DBG("%s: %p(%d) -> %p(%d)\n", __FUNCTION__,
*dst, *dst ? (*dst)->refcount : 0, src, src ? src->refcount : 0);
assert(*dst == NULL);
if (src) {
src->refcount++;
if (src != *dst) {
if (*dst)
intel_region_release(dst);
if (src)
src->refcount++;
*dst = src;
}
}