diff options
| author | Miles Bader <miles@lsi.nec.co.jp> | 2002-07-31 02:09:37 +0000 |
|---|---|---|
| committer | Miles Bader <miles@lsi.nec.co.jp> | 2002-07-31 02:09:37 +0000 |
| commit | 4d7b95f7d2ddf5f4901a871178c59b55ab042551 (patch) | |
| tree | 8ccb0d5678291579863a445a47135847521d4379 /libc | |
| parent | 2fbc5f2c9c7eb68af76c745d19817f78200df410 (diff) | |
(MALLOC_HEADER_SIZE): New macro.
(MALLOC_BASE, MALLOC_ADDR): Use it.
Diffstat (limited to 'libc')
| -rw-r--r-- | libc/stdlib/malloc/malloc.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/libc/stdlib/malloc/malloc.h b/libc/stdlib/malloc/malloc.h index 8abc9ed4f..193dabd64 100644 --- a/libc/stdlib/malloc/malloc.h +++ b/libc/stdlib/malloc/malloc.h @@ -52,17 +52,21 @@ ^ ADDR - MALLOC_ALIGN */ +/* The amount of extra space used by the malloc header. */ +#define MALLOC_HEADER_SIZE MALLOC_ALIGNMENT + /* Return base-address of a malloc allocation, given the user address. */ -#define MALLOC_BASE(addr) ((void *)((char *)addr - MALLOC_ALIGNMENT)) +#define MALLOC_BASE(addr) ((void *)((char *)addr - MALLOC_HEADER_SIZE)) /* Return the size of a malloc allocation, given the user address. */ #define MALLOC_SIZE(addr) (*(size_t *)MALLOC_BASE(addr)) /* Sets the size of a malloc allocation, given the user address. */ #define MALLOC_SET_SIZE(addr, size) (*(size_t *)MALLOC_BASE(addr) = (size)) /* Return the user address of a malloc allocation, given the base address. */ -#define MALLOC_ADDR(base) ((void *)((char *)base + MALLOC_ALIGNMENT)) +#define MALLOC_ADDR(base) ((void *)((char *)base + MALLOC_HEADER_SIZE)) +/* Locking for multithreaded apps. */ #ifdef __UCLIBC_HAS_THREADS__ # include <pthread.h> |