kiper220/mimalloc
1
0
Fork 0
mirror of https://github.com/microsoft/mimalloc.git synced 2025-07-06 19:38:41 +03:00
Code Issues Projects Releases Packages Wiki Activity Actions

comments

Browse source
This commit is contained in:
daanx 2024-12-16 09:51:54 -08:00
parent d2f670e6e5
commit 037cb167f8
2 changed files with 17 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

12
include/mimalloc/types.h
View file

@ -100,7 +100,7 @@ terms of the MIT license. A copy of the license can be found in the file
// Sizes are for 64-bit
#ifndef MI_ARENA_SLICE_SHIFT
#ifdef MI_SMALL_PAGE_SHIFT // compatibility
#ifdef MI_SMALL_PAGE_SHIFT // backward compatibility
#define MI_ARENA_SLICE_SHIFT MI_SMALL_PAGE_SHIFT
#else
#define MI_ARENA_SLICE_SHIFT (13 + MI_SIZE_SHIFT) // 64 KiB (32 KiB on 32-bit)
@ -149,7 +149,7 @@ typedef struct mi_arena_s mi_arena_t; // defined in `arena.c`
// a memory id tracks the provenance of arena/OS allocated memory
// ---------------------------------------------------------------
// Memory can reside in arena's, direct OS allocated, meta-data pages, or statically allocated.
// Memory can reside in arena's, direct OS allocated, meta-data pages, or statically allocated.
// The memid keeps track of this.
typedef enum mi_memkind_e {
MI_MEM_NONE, // not allocated
@ -264,7 +264,7 @@ typedef uint8_t mi_heaptag_t;
//
// We don't count `freed` (as |free|) but use `used` to reduce
// the number of memory accesses in the `mi_page_all_free` function(s).
//
//
// Notes:
// - Non-atomic fields can only be accessed if having ownership (low bit of `xthread_free`).
// - If a page is not part of a heap it is called "abandoned" -- in
@ -310,7 +310,7 @@ typedef struct mi_page_s {
#define MI_PAGE_ALIGN MI_ARENA_SLICE_ALIGN // pages must be aligned on this for the page map.
#define MI_PAGE_MIN_START_BLOCK_ALIGN MI_MAX_ALIGN_SIZE // minimal block alignment for the first block in a page (16b)
#define MI_PAGE_MAX_START_BLOCK_ALIGN2 MI_KiB // maximal block alignment for "power of 2"-sized blocks
#define MI_PAGE_MAX_START_BLOCK_ALIGN2 MI_KiB // maximal block alignment for "power of 2"-sized blocks
#define MI_PAGE_MAX_OVERALLOC_ALIGN MI_ARENA_SLICE_SIZE // (64 KiB) limit for which we overallocate in arena pages, beyond this use OS allocation
#if (MI_ENCODE_FREELIST || MI_PADDING) && MI_SIZE_SIZE == 8
@ -348,12 +348,12 @@ typedef enum mi_page_kind_e {
// ------------------------------------------------------
// Heaps
//
//
// Provide first-class heaps to allocate from.
// A heap just owns a set of pages for allocation and
// can only be allocate/reallocate from the thread that created it.
// Freeing blocks can be done from any thread though.
//
//
// Per thread, there is always a default heap that is
// used for allocation; it is initialized to statically
// point to an empty heap to avoid initialization checks