diff options
Diffstat (limited to 'libc/stdlib')
| -rw-r--r-- | libc/stdlib/malloc/malloc.h | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/libc/stdlib/malloc/malloc.h b/libc/stdlib/malloc/malloc.h index 6c4590894..4914a9edc 100644 --- a/libc/stdlib/malloc/malloc.h +++ b/libc/stdlib/malloc/malloc.h @@ -61,15 +61,16 @@ /* The amount of extra space used by the malloc header. */ #define MALLOC_HEADER_SIZE MALLOC_ALIGNMENT +/* Set up the malloc header, and return the user address of a malloc block. */ +#define MALLOC_SETUP(base, size) \ + (MALLOC_SET_SIZE (base, size), (void *)((char *)base + MALLOC_HEADER_SIZE)) +/* Set the size of a malloc allocation, given the base address. */ +#define MALLOC_SET_SIZE(base, size) (*(size_t *)(base) = (size)) + /* Return base-address of a malloc allocation, given the user address. */ #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_HEADER_SIZE)) /* Locking for multithreaded apps. */ |