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refine last slice setting for large alignments

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This commit is contained in:
daan 2022-11-06 20:57:27 -08:00
parent 562efed54d
commit 651a99b35d
4 changed files with 20 additions and 21 deletions
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2
include/mimalloc-internal.h
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@ -481,7 +481,7 @@ static inline mi_slice_t* mi_slice_first(const mi_slice_t* slice) {
// Get the page containing the pointer
static inline mi_page_t* _mi_segment_page_of(const mi_segment_t* segment, const void* p) {
mi_assert_internal(p > segment);
mi_assert_internal(p > (void*)segment);
ptrdiff_t diff = (uint8_t*)p - (uint8_t*)segment;
mi_assert_internal(diff > 0 && diff <= (ptrdiff_t)MI_SEGMENT_SIZE);
size_t idx = (size_t)diff >> MI_SEGMENT_SLICE_SHIFT;

3
include/mimalloc-types.h
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@ -174,8 +174,7 @@ typedef int32_t mi_ssize_t;
#endif
// Maximum slice offset (15)
// #define MI_MAX_SLICE_OFFSET ((MI_ALIGNMENT_MAX / MI_SEGMENT_SLICE_SIZE) - 1)
#define MI_MAX_SLICE_OFFSET ((MI_SEGMENT_SIZE / MI_SEGMENT_SLICE_SIZE))
#define MI_MAX_SLICE_OFFSET ((MI_ALIGNMENT_MAX / MI_SEGMENT_SLICE_SIZE) - 1)
// Used as a special value to encode block sizes in 32 bits.
#define MI_HUGE_BLOCK_SIZE ((uint32_t)(2*MI_GiB))