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strengthen memory order of bit operations; insert memory fences

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daan 2020-07-26 14:19:30 -07:00
parent a9f46dc86f
commit a468430772
4 changed files with 10 additions and 8 deletions
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2
src/alloc.c
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@ -323,7 +323,7 @@ static mi_decl_noinline void _mi_free_block_mt(mi_page_t* page, mi_block_t* bloc
if (mi_unlikely(use_delayed)) {
// racy read on `heap`, but ok because MI_DELAYED_FREEING is set (see `mi_heap_delete` and `mi_heap_collect_abandon`)
mi_heap_t* const heap = mi_page_heap(page);
mi_heap_t* const heap = (mi_heap_t*)(mi_atomic_read(&page->xheap)); //mi_page_heap(page);
mi_assert_internal(heap != NULL);
if (heap != NULL) {
// add to the delayed free list of this heap. (do this atomically as the lock only protects heap memory validity)