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clean up segment slice handling

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This commit is contained in:
daan 2019-08-24 12:20:32 -07:00
parent cce38bc147
commit 612b2cc9b7
5 changed files with 352 additions and 335 deletions
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6
include/mimalloc-internal.h
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@ -259,7 +259,7 @@ static inline mi_slice_t* mi_page_to_slice(mi_page_t* p) {
// Segment belonging to a page
static inline mi_segment_t* _mi_page_segment(const mi_page_t* page) {
mi_segment_t* segment = _mi_ptr_segment(page);
mi_assert_internal(segment == NULL || ((mi_slice_t*)page >= segment->slices && (mi_slice_t*)page < segment->slices + segment->slice_count));
mi_assert_internal(segment == NULL || ((mi_slice_t*)page >= segment->slices && (mi_slice_t*)page < segment->slices + segment->slice_entries));
return segment;
}
@ -276,11 +276,11 @@ static inline mi_page_t* _mi_segment_page_of(const mi_segment_t* segment, const
ptrdiff_t diff = (uint8_t*)p - (uint8_t*)segment;
mi_assert_internal(diff >= 0 && diff < (ptrdiff_t)MI_SEGMENT_SIZE);
uintptr_t idx = (uintptr_t)diff >> MI_SEGMENT_SLICE_SHIFT;
mi_assert_internal(idx < segment->slice_count);
mi_assert_internal(idx < segment->slice_entries);
mi_slice_t* slice0 = (mi_slice_t*)&segment->slices[idx];
mi_slice_t* slice = mi_slice_first(slice0); // adjust to the block that holds the page data
mi_assert_internal(slice->slice_offset == 0);
mi_assert_internal(slice >= segment->slices && slice < segment->slices + segment->slice_count);
mi_assert_internal(slice >= segment->slices && slice < segment->slices + segment->slice_entries);
return mi_slice_to_page(slice);
}