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improve codegen for mi_free

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This commit is contained in:
daan 2020-01-23 10:03:03 -08:00
parent 66818bf632
commit 0316859e06
1 changed files with 6 additions and 4 deletions
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10
src/alloc.c
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@ -21,7 +21,7 @@ terms of the MIT license. A copy of the license can be found in the file
// Fast allocation in a page: just pop from the free list.
// Fall back to generic allocation only if the list is empty.
extern inline void* _mi_page_malloc(mi_heap_t* heap, mi_page_t* page, size_t size) mi_attr_noexcept {
extern inline void* _mi_page_malloc(mi_heap_t* heap, mi_page_t* page, size_t size) mi_attr_noexcept {
mi_assert_internal(page->xblock_size==0||mi_page_block_size(page) >= size);
mi_block_t* block = page->free;
if (mi_unlikely(block == NULL)) {
@ -290,7 +290,8 @@ mi_block_t* _mi_page_ptr_unalign(const mi_segment_t* segment, const mi_page_t* p
}
static void mi_decl_noinline mi_free_generic(const mi_segment_t* segment, mi_page_t* page, bool local, void* p) {
static void mi_decl_noinline mi_free_generic(const mi_segment_t* segment, bool local, void* p) {
mi_page_t* page = _mi_segment_page_of(segment, p);
mi_block_t* block = (mi_page_has_aligned(page) ? _mi_page_ptr_unalign(segment, page, p) : (mi_block_t*)p);
_mi_free_block(page, local, block);
}
@ -338,7 +339,7 @@ void mi_free(void* p) mi_attr_noexcept
if (mi_likely(tid == segment->thread_id && page->flags.full_aligned == 0)) { // the thread id matches and it is not a full page, nor has aligned blocks
// local, and not full or aligned
mi_block_t* block = (mi_block_t*)p;
mi_block_t* const block = (mi_block_t*)p;
if (mi_unlikely(mi_check_is_double_free(page,block))) return;
mi_block_set_next(page, block, page->local_free);
page->local_free = block;
@ -349,7 +350,8 @@ void mi_free(void* p) mi_attr_noexcept
}
else {
// non-local, aligned blocks, or a full page; use the more generic path
mi_free_generic(segment, page, tid == segment->thread_id, p);
// note: recalc page in generic to improve code generation
mi_free_generic(segment, tid == segment->thread_id, p);
}
}