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daanx 2024-12-23 18:33:37 -08:00
parent 9a7c0d443a
commit ba68810333
7 changed files with 69 additions and 25 deletions
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1
include/mimalloc.h
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@ -400,6 +400,7 @@ typedef enum mi_option_e {
mi_option_max_page_candidates, // max candidate pages to consider for allocation (=4)
mi_option_max_vabits, // max user space virtual address bits to consider (=48)
mi_option_pagemap_commit, // commit the full pagemap (to always catch invalid pointer uses) (=0)
mi_option_page_commit_on_demand, // commit page memory on-demand
_mi_option_last,
// legacy option names
mi_option_large_os_pages = mi_option_allow_large_os_pages,

7
include/mimalloc/types.h
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@ -139,6 +139,8 @@ terms of the MIT license. A copy of the license can be found in the file
// We never allocate more than PTRDIFF_MAX (see also <https://sourceware.org/ml/libc-announce/2019/msg00001.html>)
#define MI_MAX_ALLOC_SIZE PTRDIFF_MAX
#define MI_PAGE_MIN_COMMIT_SIZE MI_ARENA_SLICE_SIZE
// ------------------------------------------------------
// Arena's are large reserved areas of memory allocated from
// the OS that are managed by mimalloc to efficiently
@ -290,7 +292,7 @@ typedef struct mi_page_s {
_Atomic(mi_page_flags_t) xflags; // `in_full_queue` and `has_aligned` flags
size_t block_size; // size available in each block (always `>0`)
uint8_t* page_start; // start of the blocks
uint8_t* page_start; // start of the blocks
mi_heaptag_t heap_tag; // tag of the owning heap, used to separate heaps by object type
bool free_is_zero; // `true` if the blocks in the free list are zero initialized
// padding
@ -301,6 +303,7 @@ typedef struct mi_page_s {
mi_heap_t* heap; // the heap owning this page (or NULL for abandoned pages)
struct mi_page_s* next; // next page owned by the heap with the same `block_size`
struct mi_page_s* prev; // previous page owned by the heap with the same `block_size`
size_t page_committed; // committed size relative to `page_start`.
mi_memid_t memid; // provenance of the page memory
} mi_page_t;
@ -324,7 +327,7 @@ typedef struct mi_page_s {
// (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)/8) // < 8 KiB
#define MI_MEDIUM_MAX_OBJ_SIZE ((MI_MEDIUM_PAGE_SIZE-MI_PAGE_INFO_SIZE)/8) // < 64 KiB
#define MI_LARGE_MAX_OBJ_SIZE ((MI_LARGE_PAGE_SIZE-MI_PAGE_INFO_SIZE)/8) // < 512 KiB
#define MI_LARGE_MAX_OBJ_SIZE ((MI_LARGE_PAGE_SIZE-MI_PAGE_INFO_SIZE)/4) // < 512 KiB
#define MI_LARGE_MAX_OBJ_WSIZE (MI_LARGE_MAX_OBJ_SIZE/MI_SIZE_SIZE)