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more eager handling of non-local frees

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daan 2019-07-11 15:21:57 -07:00
parent 72a39c0bb1
commit 1fdb4b288f
5 changed files with 44 additions and 20 deletions
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7
src/alloc.c
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@ -112,7 +112,9 @@ static mi_decl_noinline void _mi_free_block_mt(mi_page_t* page, mi_block_t* bloc
do {
tfreex.value = tfree.value = page->thread_free.value;
use_delayed = (tfree.delayed == MI_USE_DELAYED_FREE);
use_delayed = (tfree.delayed == MI_USE_DELAYED_FREE ||
(tfree.delayed == MI_NO_DELAYED_FREE && page->used == page->thread_freed+1)
);
if (mi_unlikely(use_delayed)) {
// unlikely: this only happens on the first concurrent free in a page that is in the full list
tfreex.delayed = MI_DELAYED_FREEING;
@ -144,7 +146,8 @@ static mi_decl_noinline void _mi_free_block_mt(mi_page_t* page, mi_block_t* bloc
// and reset the MI_DELAYED_FREEING flag
do {
tfreex.value = tfree.value = page->thread_free.value;
tfreex.delayed = MI_NO_DELAYED_FREE;
mi_assert_internal(tfree.delayed == MI_NEVER_DELAYED_FREE || tfree.delayed == MI_DELAYED_FREEING);
if (tfree.delayed != MI_NEVER_DELAYED_FREE) tfreex.delayed = MI_NO_DELAYED_FREE;
} while (!mi_atomic_compare_exchange((volatile uintptr_t*)&page->thread_free, tfreex.value, tfree.value));
}
}