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wip: further progress on segment removal; arena allocation

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daanx 2024-11-29 15:08:06 -08:00
parent 46afcbe06c
commit 68f5fb2f4b
18 changed files with 80 additions and 98 deletions
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9
src/os.c
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@ -245,7 +245,7 @@ static void* mi_os_prim_alloc_aligned(size_t size, size_t alignment, bool commit
// note: this is dangerous on Windows as VirtualFree needs the actual base pointer
// this is handled though by having the `base` field in the memid's
*base = p; // remember the base
p = mi_align_up_ptr(p, alignment);
p = _mi_align_up_ptr(p, alignment);
// explicitly commit only the aligned part
if (commit) {
@ -258,7 +258,7 @@ static void* mi_os_prim_alloc_aligned(size_t size, size_t alignment, bool commit
if (p == NULL) return NULL;
// and selectively unmap parts around the over-allocated area.
void* aligned_p = mi_align_up_ptr(p, alignment);
void* aligned_p = _mi_align_up_ptr(p, alignment);
size_t pre_size = (uint8_t*)aligned_p - (uint8_t*)p;
size_t mid_size = _mi_align_up(size, _mi_os_page_size());
size_t post_size = over_size - pre_size - mid_size;
@ -316,6 +316,7 @@ void* _mi_os_alloc_aligned(size_t size, size_t alignment, bool commit, bool allo
}
void* _mi_os_zalloc(size_t size, mi_memid_t* memid, mi_stats_t* stats) {
MI_UNUSED(stats);
void* p = _mi_os_alloc(size, memid, &_mi_stats_main);
if (p == NULL) return NULL;
@ -373,10 +374,10 @@ static void* mi_os_page_align_areax(bool conservative, void* addr, size_t size,
if (size == 0 || addr == NULL) return NULL;
// page align conservatively within the range
void* start = (conservative ? mi_align_up_ptr(addr, _mi_os_page_size())
void* start = (conservative ? _mi_align_up_ptr(addr, _mi_os_page_size())
: mi_align_down_ptr(addr, _mi_os_page_size()));
void* end = (conservative ? mi_align_down_ptr((uint8_t*)addr + size, _mi_os_page_size())
: mi_align_up_ptr((uint8_t*)addr + size, _mi_os_page_size()));
: _mi_align_up_ptr((uint8_t*)addr + size, _mi_os_page_size()));
ptrdiff_t diff = (uint8_t*)end - (uint8_t*)start;
if (diff <= 0) return NULL;