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authorUlrich Drepper <drepper@redhat.com>2008-09-12 18:18:25 +0000
committerUlrich Drepper <drepper@redhat.com>2008-09-12 18:18:25 +0000
commitdba385512dea60fd049e59628cad044b4bdbcba6 (patch)
treee20d0f5e3968be22cadba9324eae546ddd53ce32 /malloc
parent6c1611121497c0b3601311b2e0a8e0e736ad2b76 (diff)
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(public_vALLOc): Try other arenas in case _int_valloc fails. (public_pVALLOc): Likewise.
Diffstat (limited to 'malloc')
-rw-r--r--malloc/malloc.c57
1 files changed, 51 insertions, 6 deletions
diff --git a/malloc/malloc.c b/malloc/malloc.c
index 7610aa4..feca2cb 100644
--- a/malloc/malloc.c
+++ b/malloc/malloc.c
@@ -3800,17 +3800,39 @@ public_vALLOc(size_t bytes)
if(__malloc_initialized < 0)
ptmalloc_init ();
+ size_t pagesz = mp_.pagesize;
+
__malloc_ptr_t (*hook) __MALLOC_PMT ((size_t, size_t,
__const __malloc_ptr_t)) =
__memalign_hook;
if (hook != NULL)
- return (*hook)(mp_.pagesize, bytes, RETURN_ADDRESS (0));
+ return (*hook)(pagesz, bytes, RETURN_ADDRESS (0));
- arena_get(ar_ptr, bytes + mp_.pagesize + MINSIZE);
+ arena_get(ar_ptr, bytes + pagesz + MINSIZE);
if(!ar_ptr)
return 0;
p = _int_valloc(ar_ptr, 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, pagesz, bytes);
+ (void)mutex_unlock(&main_arena.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);
+ if(ar_ptr) {
+ p = _int_memalign(ar_ptr, pagesz, bytes);
+ (void)mutex_unlock(&ar_ptr->mutex);
+ }
+#endif
+ }
+ }
+ assert(!p || chunk_is_mmapped(mem2chunk(p)) ||
+ ar_ptr == arena_for_chunk(mem2chunk(p)));
+
return p;
}
@@ -3823,17 +3845,40 @@ public_pVALLOc(size_t bytes)
if(__malloc_initialized < 0)
ptmalloc_init ();
+ size_t pagesz = mp_.pagesize;
+ size_t page_mask = mp_.pagesize - 1;
+ size_t rounded_bytes = (bytes + page_mask) & ~(page_mask);
+
__malloc_ptr_t (*hook) __MALLOC_PMT ((size_t, size_t,
__const __malloc_ptr_t)) =
__memalign_hook;
if (hook != NULL)
- return (*hook)(mp_.pagesize,
- (bytes + mp_.pagesize - 1) & ~(mp_.pagesize - 1),
- RETURN_ADDRESS (0));
+ return (*hook)(pagesz, rounded_bytes, RETURN_ADDRESS (0));
- arena_get(ar_ptr, bytes + 2*mp_.pagesize + MINSIZE);
+ arena_get(ar_ptr, bytes + 2*pagesz + MINSIZE);
p = _int_pvalloc(ar_ptr, 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, pagesz, rounded_bytes);
+ (void)mutex_unlock(&main_arena.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 + 2*pagesz + MINSIZE);
+ if(ar_ptr) {
+ p = _int_memalign(ar_ptr, pagesz, rounded_bytes);
+ (void)mutex_unlock(&ar_ptr->mutex);
+ }
+#endif
+ }
+ }
+ assert(!p || chunk_is_mmapped(mem2chunk(p)) ||
+ ar_ptr == arena_for_chunk(mem2chunk(p)));
+
return p;
}