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small fixes; max object size 1/8th of a pages

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daanx 2024-12-19 21:30:03 -08:00
parent 9a4c264e76
commit 3746bf79ed
6 changed files with 21 additions and 17 deletions
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4
include/mimalloc/types.h
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@ -321,8 +321,8 @@ typedef struct mi_page_s {
// The max object size are checked to not waste more than 12.5% internally over the page sizes.
// (Except for large pages since huge objects are allocated in 4MiB chunks)
#define MI_SMALL_MAX_OBJ_SIZE ((MI_SMALL_PAGE_SIZE-MI_PAGE_INFO_SIZE)/6) // < 11 KiB
#define MI_MEDIUM_MAX_OBJ_SIZE ((MI_MEDIUM_PAGE_SIZE-MI_PAGE_INFO_SIZE)/4) // < 128 KiB
#define MI_SMALL_MAX_OBJ_SIZE ((MI_SMALL_PAGE_SIZE-MI_PAGE_INFO_SIZE)/8) // < 11 KiB
#define MI_MEDIUM_MAX_OBJ_SIZE ((MI_MEDIUM_PAGE_SIZE-MI_PAGE_INFO_SIZE)/8) // < 128 KiB
#define MI_LARGE_MAX_OBJ_SIZE ((MI_LARGE_PAGE_SIZE-MI_PAGE_INFO_SIZE)/4) // < 1 MiB
#define MI_LARGE_MAX_OBJ_WSIZE (MI_LARGE_MAX_OBJ_SIZE/MI_SIZE_SIZE)

2
src/arena.c
View file

@ -313,7 +313,7 @@ static bool mi_arena_reserve(size_t req_size, bool allow_large, mi_arena_id_t re
if (arena_count >= 1 && arena_count <= 128) {
// scale up the arena sizes exponentially every 4 entries
const size_t multiplier = (size_t)1 << _mi_clamp(arena_count/4, 0, 16);
const size_t multiplier = (size_t)1 << _mi_clamp(arena_count/2, 0, 16);
size_t reserve = 0;
if (!mi_mul_overflow(multiplier, arena_reserve, &reserve)) {
arena_reserve = reserve;

2
src/bitmap.c
View file

@ -596,7 +596,7 @@ static inline bool mi_bchunk_try_find_and_clear_1(mi_bchunk_t* chunk, size_t n,
return mi_bchunk_try_find_and_clear(chunk, pidx);
}
#if !MI_OPT_SIMD
#if !(MI_OPT_SIMD && defined(__AVX2__) && (MI_BCHUNK_BITS==512))
static inline bool mi_bchunk_try_find_and_clear8_at(mi_bchunk_t* chunk, size_t chunk_idx, size_t* pidx, bool allow_all_set) {
const mi_bfield_t b = mi_atomic_load_relaxed(&chunk->bfields[chunk_idx]);
if (!allow_all_set && (~b == 0)) return false;

8
src/heap.c
View file

@ -166,8 +166,12 @@ void mi_collect(bool force) mi_attr_noexcept {
----------------------------------------------------------- */
mi_heap_t* mi_heap_get_default(void) {
mi_thread_init();
return mi_prim_get_default_heap();
mi_heap_t* heap = mi_prim_get_default_heap();
if mi_unlikely(!mi_heap_is_initialized(heap)) {
mi_thread_init();
heap = mi_prim_get_default_heap();
}
return heap;
}
static bool mi_heap_is_default(const mi_heap_t* heap) {