diff options
Diffstat (limited to 'malloc/malloc.c')
| -rw-r--r-- | malloc/malloc.c | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/malloc/malloc.c b/malloc/malloc.c index fc8a83c328..e00eb0f4e2 100644 --- a/malloc/malloc.c +++ b/malloc/malloc.c @@ -1,5 +1,5 @@ /* Malloc implementation for multiple threads without lock contention. - Copyright (C) 1996-2006, 2007 Free Software Foundation, Inc. + Copyright (C) 1996-2006, 2007, 2008 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Wolfram Gloger <wg@malloc.de> and Doug Lea <dl@cs.oswego.edu>, 2001. @@ -3553,9 +3553,10 @@ public_mALLOc(size_t bytes) /* Maybe the failure is due to running out of mmapped areas. */ if(ar_ptr != &main_arena) { (void)mutex_unlock(&ar_ptr->mutex); - (void)mutex_lock(&main_arena.mutex); - victim = _int_malloc(&main_arena, bytes); - (void)mutex_unlock(&main_arena.mutex); + ar_ptr = &main_arena; + (void)mutex_lock(&ar_ptr->mutex); + victim = _int_malloc(ar_ptr, bytes); + (void)mutex_unlock(&ar_ptr->mutex); } else { #if USE_ARENAS /* ... or sbrk() has failed and there is still a chance to mmap() */ @@ -3760,24 +3761,28 @@ public_mEMALIGn(size_t alignment, size_t bytes) if(!ar_ptr) return 0; p = _int_memalign(ar_ptr, alignment, bytes); - (void)mutex_unlock(&ar_ptr->mutex); if(!p) { /* Maybe the failure is due to running out of mmapped areas. */ if(ar_ptr != &main_arena) { - (void)mutex_lock(&main_arena.mutex); - p = _int_memalign(&main_arena, alignment, bytes); - (void)mutex_unlock(&main_arena.mutex); + (void)mutex_unlock(&ar_ptr->mutex); + ar_ptr = &main_arena; + (void)mutex_lock(&ar_ptr->mutex); + p = _int_memalign(ar_ptr, alignment, bytes); + (void)mutex_unlock(&ar_ptr->mutex); } else { #if USE_ARENAS /* ... or sbrk() has failed and there is still a chance to mmap() */ - ar_ptr = arena_get2(ar_ptr->next ? ar_ptr : 0, bytes); + mstate prev = ar_ptr->next ? ar_ptr : 0; + (void)mutex_unlock(&ar_ptr->mutex); + ar_ptr = arena_get2(prev, bytes); if(ar_ptr) { p = _int_memalign(ar_ptr, alignment, bytes); (void)mutex_unlock(&ar_ptr->mutex); } #endif } - } + } else + (void)mutex_unlock(&ar_ptr->mutex); assert(!p || chunk_is_mmapped(mem2chunk(p)) || ar_ptr == arena_for_chunk(mem2chunk(p))); return p; |