From: Michal Schmidt <mschmidt@redhat.com>
Date: Fri, 24 Oct 2014 13:30:18 +0000 (+0200)
Subject: mempool: add a zeroing alloc function
X-Git-Tag: v218~651
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=52fc5ce38c871e8d75392592919c66ab7f7575dd

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.
---

diff --git a/src/shared/mempool.c b/src/shared/mempool.c
index b39a37f2d..d5d98d882 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;
diff --git a/src/shared/mempool.h b/src/shared/mempool.h
index 8b0bf381b..42f473bee 100644
--- a/src/shared/mempool.h
+++ b/src/shared/mempool.h
@@ -34,6 +34,7 @@ struct mempool {
 };
 
 void* mempool_alloc_tile(struct mempool *mp);
+void* mempool_alloc0_tile(struct mempool *mp);
 void mempool_free_tile(struct mempool *mp, void *p);
 
 #define DEFINE_MEMPOOL(pool_name, tile_type, alloc_at_least) \