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authorRich Felker <dalias@aerifal.cx>2018-09-11 15:07:16 -0400
committerRich Felker <dalias@aerifal.cx>2018-09-12 14:34:36 -0400
commitef8d45d6c9036b23087461550e95683804ed0084 (patch)
tree771caa0266370ad05bc1944abaf4345018bc8a98 /src
parent055dfbb7f71a67151898a8c4bf82ba930ba35a11 (diff)
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rework malloc_usable_size to use malloc_impl.h
Diffstat (limited to 'src')
-rw-r--r--src/malloc/malloc_usable_size.c10
1 files changed, 1 insertions, 9 deletions
diff --git a/src/malloc/malloc_usable_size.c b/src/malloc/malloc_usable_size.c
index 6743ea77..7a8ed6c4 100644
--- a/src/malloc/malloc_usable_size.c
+++ b/src/malloc/malloc_usable_size.c
@@ -1,16 +1,8 @@
 #include <malloc.h>
+#include "malloc_impl.h"
 
 void *(*const __realloc_dep)(void *, size_t) = realloc;
 
-struct chunk {
-	size_t psize, csize;
-	struct chunk *next, *prev;
-};
-
-#define OVERHEAD (2*sizeof(size_t))
-#define CHUNK_SIZE(c) ((c)->csize & -2)
-#define MEM_TO_CHUNK(p) (struct chunk *)((char *)(p) - OVERHEAD)
-
 size_t malloc_usable_size(void *p)
 {
 	return p ? CHUNK_SIZE(MEM_TO_CHUNK(p)) - OVERHEAD : 0;