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refine mi_os_good_alloc_size and use it for huge pages (to ensure realloc is bounded as in #153

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Daan Leijen 2019-09-10 13:26:51 -07:00
parent d278c26c0e
commit 1909cfb346
4 changed files with 18 additions and 12 deletions
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5
src/page.c
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@ -727,10 +727,7 @@ void mi_register_deferred_free(mi_deferred_free_fun* fn) mi_attr_noexcept {
// just that page, we always treat them as abandoned and any thread
// that frees the block can free the whole page and segment directly.
static mi_page_t* mi_huge_page_alloc(mi_heap_t* heap, size_t size) {
size_t align_size = _mi_os_page_size();
if (align_size < (size / 8)) align_size = _mi_align_up(size / 8, align_size);
if (align_size > MI_SEGMENT_SIZE) align_size = MI_SEGMENT_SIZE;
size_t block_size = _mi_align_up(size, align_size);
size_t block_size = _mi_os_good_alloc_size(size);
mi_assert_internal(_mi_bin(block_size) == MI_BIN_HUGE);
mi_page_t* page = mi_page_fresh_alloc(heap,NULL,block_size);
if (page != NULL) {