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revise the segment map to only apply to OS allocated segments and reduce the .BSS footprint

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This commit is contained in:
daanx 2024-06-02 14:46:59 -07:00
parent 5501f59f6c
commit a964322a21
4 changed files with 82 additions and 105 deletions
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15
src/os.c
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@ -157,7 +157,8 @@ static void mi_os_prim_free(void* addr, size_t size, bool still_committed, mi_st
_mi_stat_decrease(&stats->reserved, size);
}
void _mi_os_free_ex(void* addr, size_t size, bool still_committed, mi_memid_t memid, mi_stats_t* tld_stats) {
void _mi_os_free_ex(void* addr, size_t size, bool still_committed, mi_memid_t memid, mi_stats_t* stats) {
if (stats == NULL) stats = &_mi_stats_main;
if (mi_memkind_is_os(memid.memkind)) {
size_t csize = _mi_os_good_alloc_size(size);
void* base = addr;
@ -171,10 +172,10 @@ void _mi_os_free_ex(void* addr, size_t size, bool still_committed, mi_memid_t me
// free it
if (memid.memkind == MI_MEM_OS_HUGE) {
mi_assert(memid.is_pinned);
mi_os_free_huge_os_pages(base, csize, tld_stats);
mi_os_free_huge_os_pages(base, csize, stats);
}
else {
mi_os_prim_free(base, csize, still_committed, tld_stats);
mi_os_prim_free(base, csize, still_committed, stats);
}
}
else {
@ -183,8 +184,9 @@ void _mi_os_free_ex(void* addr, size_t size, bool still_committed, mi_memid_t me
}
}
void _mi_os_free(void* p, size_t size, mi_memid_t memid, mi_stats_t* tld_stats) {
_mi_os_free_ex(p, size, true, memid, tld_stats);
void _mi_os_free(void* p, size_t size, mi_memid_t memid, mi_stats_t* stats) {
if (stats == NULL) stats = &_mi_stats_main;
_mi_os_free_ex(p, size, true, memid, stats);
}
@ -299,6 +301,7 @@ static void* mi_os_prim_alloc_aligned(size_t size, size_t alignment, bool commit
void* _mi_os_alloc(size_t size, mi_memid_t* memid, mi_stats_t* stats) {
*memid = _mi_memid_none();
if (size == 0) return NULL;
if (stats == NULL) stats = &_mi_stats_main;
size = _mi_os_good_alloc_size(size);
bool os_is_large = false;
bool os_is_zero = false;
@ -314,6 +317,7 @@ void* _mi_os_alloc_aligned(size_t size, size_t alignment, bool commit, bool allo
MI_UNUSED(&_mi_os_get_aligned_hint); // suppress unused warnings
*memid = _mi_memid_none();
if (size == 0) return NULL;
if (stats == NULL) stats = &_mi_stats_main;
size = _mi_os_good_alloc_size(size);
alignment = _mi_align_up(alignment, _mi_os_page_size());
@ -342,6 +346,7 @@ void* _mi_os_alloc_aligned_at_offset(size_t size, size_t alignment, size_t offse
mi_assert(offset <= size);
mi_assert((alignment % _mi_os_page_size()) == 0);
*memid = _mi_memid_none();
if (stats == NULL) stats = &_mi_stats_main;
if (offset > MI_SEGMENT_SIZE) return NULL;
if (offset == 0) {
// regular aligned allocation