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better padding implementation, more precise statistics

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This commit is contained in:
daan 2020-01-31 20:34:24 -08:00
parent 8422ab125d
commit 68112a2751
7 changed files with 89 additions and 65 deletions
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12
include/mimalloc-internal.h
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@ -310,8 +310,10 @@ static inline uintptr_t _mi_ptr_cookie(const void* p) {
----------------------------------------------------------- */
static inline mi_page_t* _mi_heap_get_free_small_page(mi_heap_t* heap, size_t size) {
mi_assert_internal(size <= MI_SMALL_SIZE_MAX);
return heap->pages_free_direct[_mi_wsize_from_size(size)];
mi_assert_internal(size <= (MI_SMALL_SIZE_MAX + MI_PADDING_SIZE));
const size_t idx = _mi_wsize_from_size(size);
mi_assert_internal(idx < MI_PAGES_DIRECT);
return heap->pages_free_direct[idx];
}
// Get the page belonging to a certain size class
@ -375,6 +377,12 @@ static inline size_t mi_page_block_size(const mi_page_t* page) {
}
}
// Get the client usable block size of a page (without padding etc)
static inline size_t mi_page_usable_block_size(const mi_page_t* page) {
return mi_page_block_size(page) - MI_PADDING_SIZE;
}
// Thread free access
static inline mi_block_t* mi_page_thread_free(const mi_page_t* page) {
return (mi_block_t*)(mi_atomic_read_relaxed(&page->xthread_free) & ~3);