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merge from dev with new page fields (block_size and is_huge)

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Daan Leijen
2024-03-24 22:12:33 -07:00
parent e363f477a7 006ae2d055
commit 3c85983a35
16 changed files with 220 additions and 227 deletions
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12
src/alloc-aligned.c
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@@ -33,7 +33,7 @@ static mi_decl_noinline void* mi_heap_malloc_zero_aligned_at_fallback(mi_heap_t*
void* p;
size_t oversize;
if mi_unlikely(alignment > MI_ALIGNMENT_MAX) {
if mi_unlikely(alignment > MI_BLOCK_ALIGNMENT_MAX) {
// use OS allocation for very large alignment and allocate inside a huge page (dedicated segment with 1 page)
// This can support alignments >= MI_SEGMENT_SIZE by ensuring the object can be aligned at a point in the
// first (and single) page such that the segment info is `MI_SEGMENT_SIZE` bytes before it (so it can be found by aligning the pointer down)
@@ -47,7 +47,7 @@ static mi_decl_noinline void* mi_heap_malloc_zero_aligned_at_fallback(mi_heap_t*
oversize = (size <= MI_SMALL_SIZE_MAX ? MI_SMALL_SIZE_MAX + 1 /* ensure we use generic malloc path */ : size);
p = _mi_heap_malloc_zero_ex(heap, oversize, false, alignment); // the page block size should be large enough to align in the single huge page block
// zero afterwards as only the area from the aligned_p may be committed!
if (p == NULL) return NULL;
if (p == NULL) return NULL;
}
else {
// otherwise over-allocate
@@ -69,13 +69,13 @@ static mi_decl_noinline void* mi_heap_malloc_zero_aligned_at_fallback(mi_heap_t*
// todo: expand padding if overallocated ?
mi_assert_internal(mi_page_usable_block_size(_mi_ptr_page(p)) >= adjust + size);
mi_assert_internal(p == _mi_page_ptr_unalign(_mi_ptr_segment(aligned_p), _mi_ptr_page(aligned_p), aligned_p));
mi_assert_internal(p == _mi_page_ptr_unalign(_mi_ptr_page(aligned_p), aligned_p));
mi_assert_internal(((uintptr_t)aligned_p + offset) % alignment == 0);
mi_assert_internal(mi_usable_size(aligned_p)>=size);
mi_assert_internal(mi_usable_size(p) == mi_usable_size(aligned_p)+adjust);
// now zero the block if needed
if (alignment > MI_ALIGNMENT_MAX) {
if (alignment > MI_BLOCK_ALIGNMENT_MAX) {
// for the tracker, on huge aligned allocations only from the start of the large block is defined
mi_track_mem_undefined(aligned_p, size);
if (zero) {
@@ -85,7 +85,7 @@ static mi_decl_noinline void* mi_heap_malloc_zero_aligned_at_fallback(mi_heap_t*
if (p != aligned_p) {
mi_track_align(p,aligned_p,adjust,mi_usable_size(aligned_p));
}
}
return aligned_p;
}