mempool: add a zeroing alloc function

Add mempool_alloc0_tile(). It's like mempool_alloc_tile(), but it
initializes the allocated tile's memory to zero.

Signed-off-by: Anthony G. Basile <blueness@gentoo.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/src/shared/mempool.c b/src/shared/mempool.c
index b39a37f2db..d5d98d8829 100644
--- a/src/shared/mempool.c
+++ b/src/shared/mempool.c
@@ -74,6 +74,15 @@ void* mempool_alloc_tile(struct mempool *mp) {
         return ((uint8_t*) mp->first_pool) + ALIGN(sizeof(struct pool)) + i*mp->tile_size;
 }
 
+void* mempool_alloc0_tile(struct mempool *mp) {
+        void *p;
+
+        p = mempool_alloc_tile(mp);
+        if (p)
+                memzero(p, mp->tile_size);
+        return p;
+}
+
 void mempool_free_tile(struct mempool *mp, void *p) {
         * (void**) p = mp->freelist;
         mp->freelist = p;