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maintain pages set for arenas; improve arena load/unload

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daanx 2024-12-11 22:06:25 -08:00
parent aed76f2910
commit 94ce342ea9
6 changed files with 97 additions and 22 deletions
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9
include/mimalloc/internal.h
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@ -164,6 +164,7 @@ void _mi_meta_free(void* p, size_t size, mi_memid_t memid);
bool _mi_page_map_init(void);
void _mi_page_map_register(mi_page_t* page);
void _mi_page_map_unregister(mi_page_t* page);
void _mi_page_map_unregister_range(void* start, size_t size);
// "page.c"
void* _mi_malloc_generic(mi_heap_t* heap, size_t size, bool zero, size_t huge_alignment) mi_attr_noexcept mi_attr_malloc;
@ -437,14 +438,18 @@ static inline mi_page_t* _mi_heap_get_free_small_page(mi_heap_t* heap, size_t si
extern uint8_t* _mi_page_map;
static inline uintptr_t _mi_page_map_index(const void* p) {
return (((uintptr_t)p) >> MI_ARENA_SLICE_SHIFT);
}
static inline mi_page_t* _mi_ptr_page_ex(const void* p, bool* valid) {
#if 1
const uintptr_t idx = ((uintptr_t)p) >> MI_ARENA_SLICE_SHIFT;
const uintptr_t idx = _mi_page_map_index(p);
const size_t ofs = _mi_page_map[idx];
if (valid != NULL) *valid = (ofs != 0);
return (mi_page_t*)((idx - ofs + 1) << MI_ARENA_SLICE_SHIFT);
#else
const uintptr_t idx = ((uintptr_t)p) >> MI_ARENA_SLICE_SHIFT;
const uintptr_t idx = _mi_page_map_index(p);
const uintptr_t up = idx << MI_ARENA_SLICE_SHIFT;
__builtin_prefetch((void*)up);
const size_t ofs = _mi_page_map[idx];