kiper220/mimalloc
1
0
Fork 0
mirror of https://github.com/microsoft/mimalloc.git synced 2025-07-06 11:34:38 +03:00
Code Issues Projects Releases Packages Wiki Activity Actions

Initial commit of separate memory region layer and improved large OS pages support, see 'memory.c'

Browse source
This commit is contained in:
daan 2019-07-02 07:23:24 -07:00
parent d6901558cd
commit 06bcea1761
18 changed files with 693 additions and 297 deletions
Download patch file Download diff file Expand all files Collapse all files

9
include/mimalloc-types.h
View file

@ -89,7 +89,7 @@ terms of the MIT license. A copy of the license can be found in the file
#define MI_SMALL_PAGES_PER_SEGMENT (MI_SEGMENT_SIZE/MI_SMALL_PAGE_SIZE)
#define MI_LARGE_PAGES_PER_SEGMENT (MI_SEGMENT_SIZE/MI_LARGE_PAGE_SIZE)
#define MI_LARGE_SIZE_MAX (MI_LARGE_PAGE_SIZE/8) // 512kb on 64-bit
#define MI_LARGE_SIZE_MAX (MI_LARGE_PAGE_SIZE/4) // 1MiB on 64-bit
#define MI_LARGE_WSIZE_MAX (MI_LARGE_SIZE_MAX>>MI_INTPTR_SHIFT)
@ -215,6 +215,7 @@ typedef struct mi_segment_s {
size_t segment_size;// for huge pages this may be different from `MI_SEGMENT_SIZE`
size_t segment_info_size; // space we are using from the first page for segment meta-data and possible guard pages.
uintptr_t cookie; // verify addresses in debug mode: `mi_ptr_cookie(segment) == segment->cookie`
size_t memid; // id for the os-level memory manager
// layout like this to optimize access in `mi_free`
size_t page_shift; // `1 << page_shift` == the page sizes == `page->block_size * page->reserved` (unless the first page, then `-segment_info_size`).
@ -322,12 +323,14 @@ typedef struct mi_stats_s {
mi_stat_count_t reserved;
mi_stat_count_t committed;
mi_stat_count_t reset;
mi_stat_count_t page_committed;
mi_stat_count_t segments_abandoned;
mi_stat_count_t pages_abandoned;
mi_stat_count_t pages_extended;
mi_stat_count_t mmap_calls;
mi_stat_count_t mmap_right_align;
mi_stat_count_t mmap_ensure_aligned;
mi_stat_count_t commit_calls;
mi_stat_count_t threads;
mi_stat_count_t huge;
mi_stat_count_t malloc;
@ -370,11 +373,13 @@ typedef struct mi_segment_queue_s {
// Segments thread local data
typedef struct mi_segments_tld_s {
mi_segment_queue_t small_free; // queue of segments with free small pages
size_t count; // current number of segments;
size_t peak_count; // peak number of segments
size_t current_size; // current size of all segments
size_t peak_size; // peak size of all segments
size_t cache_count; // number of segments in the cache
size_t cache_size; // total size of all segments in the cache
mi_segment_queue_t cache; // (small) cache of segments for small and large pages (to avoid repeated mmap calls)
mi_segment_t* cache; // (small) cache of segments
mi_stats_t* stats; // points to tld stats
} mi_segments_tld_t;