diff options
Diffstat (limited to 'Zend/zend_alloc.c')
| -rw-r--r-- | Zend/zend_alloc.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Zend/zend_alloc.c b/Zend/zend_alloc.c index f52ce7985e..a3003a457a 100644 --- a/Zend/zend_alloc.c +++ b/Zend/zend_alloc.c @@ -851,6 +851,7 @@ static void *zend_mm_alloc_pages(zend_mm_heap *heap, uint32_t pages_count ZEND_F { zend_mm_chunk *chunk = heap->main_chunk; uint32_t page_num, len; + int steps = 0; while (1) { if (UNEXPECTED(chunk->free_pages < pages_count)) { @@ -1027,10 +1028,20 @@ get_chunk: goto found; } else { chunk = chunk->next; + steps++; } } found: + if (steps > 2 && pages_count < 8) { + /* move chunk into the head of the linked-list */ + chunk->prev->next = chunk->next; + chunk->next->prev = chunk->prev; + chunk->next = heap->main_chunk->next; + chunk->prev = heap->main_chunk; + chunk->prev->next = chunk; + chunk->next->prev = chunk; + } /* mark run as allocated */ chunk->free_pages -= pages_count; zend_mm_bitset_set_range(chunk->free_map, page_num, pages_count); |