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always use MI_HUGE_BLOCK_SIZE for pages in huge segments

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daanx 2023-05-17 13:27:04 -07:00
parent 4c6814bc68
commit 09f171b4f5
7 changed files with 72 additions and 25 deletions
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16
include/mimalloc/internal.h
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@ -450,24 +450,32 @@ static inline mi_page_t* _mi_ptr_page(void* p) {
return _mi_segment_page_of(_mi_ptr_segment(p), p);
}
static inline bool mi_segment_is_huge(const mi_segment_t* segment) {
return (segment->page_kind == MI_PAGE_HUGE);
}
static inline bool mi_page_is_huge(const mi_page_t* page) {
bool huge = mi_segment_is_huge(_mi_page_segment(page));
mi_assert_internal((huge && page->xblock_size == MI_HUGE_BLOCK_SIZE) || (!huge && page->xblock_size <= MI_LARGE_OBJ_SIZE_MAX));
return huge;
}
// Get the block size of a page (special case for huge objects)
static inline size_t mi_page_block_size(const mi_page_t* page) {
const size_t bsize = page->xblock_size;
mi_assert_internal(bsize > 0);
if mi_likely(bsize < MI_HUGE_BLOCK_SIZE) {
mi_assert_internal(bsize <= MI_LARGE_OBJ_SIZE_MAX);
return bsize;
}
else {
mi_assert_internal(mi_page_is_huge(page));
size_t psize;
_mi_segment_page_start(_mi_page_segment(page), page, bsize, &psize, NULL);
return psize;
}
}
static inline bool mi_page_is_huge(const mi_page_t* page) {
return (_mi_page_segment(page)->page_kind == MI_PAGE_HUGE);
}
// Get the usable block size of a page without fixed padding.
// This may still include internal padding due to alignment and rounding up size classes.
static inline size_t mi_page_usable_block_size(const mi_page_t* page) {