diff options
Diffstat (limited to 'libc/stdlib/malloc/realloc.c')
| -rw-r--r-- | libc/stdlib/malloc/realloc.c | 17 |
1 files changed, 2 insertions, 15 deletions
diff --git a/libc/stdlib/malloc/realloc.c b/libc/stdlib/malloc/realloc.c index f18ed9eb6..091b3392b 100644 --- a/libc/stdlib/malloc/realloc.c +++ b/libc/stdlib/malloc/realloc.c @@ -25,7 +25,7 @@ void *realloc (void *mem, size_t new_size) return malloc (new_size); else { - void *base_mem = (size_t *)mem - 1; + void *base_mem = mem - MALLOC_ALIGNMENT; size_t size = *(size_t *)base_mem; MALLOC_DEBUG ("realloc: 0x%lx, %d (base = 0x%lx, total_size = %d)\n", @@ -39,20 +39,7 @@ void *realloc (void *mem, size_t new_size) size_t ext_size = new_size - size; void *ext_addr = (char *)base_mem + ext_size; - if (size >= MALLOC_MMAP_THRESHOLD) - /* Try to extend this block in place using mmap. */ - { - ext_size += MALLOC_ROUND_UP_TO_PAGE_SIZE (ext_size); - - new_mem = mmap (ext_addr, ext_size, PROT_READ | PROT_WRITE, - MAP_FIXED | MAP_SHARED | MAP_ANONYMOUS, 0, 0); - if (new_mem == MAP_FAILED) - /* Can't do it. */ - ext_size = 0; - } - else - ext_size = __heap_alloc_at (&__malloc_heap, ext_addr, ext_size); - + ext_size = __heap_alloc_at (&__malloc_heap, ext_addr, ext_size); if (! ext_size) /* Our attempts to extend MEM in place failed, just allocate-and-copy. */ |