diff options
| -rw-r--r-- | gc/default/default.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/gc/default/default.c b/gc/default/default.c index c766521108..8fa030cadc 100644 --- a/gc/default/default.c +++ b/gc/default/default.c @@ -841,11 +841,13 @@ heap_page_in_global_empty_pages_pool(rb_objspace_t *objspace, struct heap_page * #define GET_PAGE_HEADER(x) (&GET_PAGE_BODY(x)->header) #define GET_HEAP_PAGE(x) (GET_PAGE_HEADER(x)->page) -static inline uint32_t -compute_slot_div_magic(unsigned short slot_size) -{ - return (uint32_t)(UINT32_MAX / slot_size) + 1; -} +static const uint32_t slot_div_magics[HEAP_COUNT] = { + 0x06666667U, + 0x03333334U, + 0x0199999aU, + 0x00cccccdU, + 0x00666667U, +}; static inline size_t slot_index_for_offset(size_t offset, uint32_t div_magic) @@ -2006,7 +2008,7 @@ heap_add_page(rb_objspace_t *objspace, rb_heap_t *heap, struct heap_page *page) page->start = start; page->total_slots = slot_count; page->slot_size = heap->slot_size; - page->slot_div_magic = compute_slot_div_magic(heap->slot_size); + page->slot_div_magic = slot_div_magics[heap - heaps]; page->heap = heap; asan_unlock_freelist(page); |