kiper220/mimalloc
1
0
Fork 0
mirror of https://github.com/microsoft/mimalloc.git synced 2025-08-26 01:04:48 +03:00
Code Issues Projects Releases Packages Wiki Activity Actions

initial experiment with fixed memory arena and sliced segments

Browse source
This commit is contained in:
daan 2019-10-31 00:40:41 -07:00
parent c7ec30ae25
commit f7d2c45af3
13 changed files with 39 additions and 564 deletions
Download patch file Download diff file Expand all files Collapse all files

8
include/mimalloc-types.h
View file

@ -239,12 +239,14 @@ typedef mi_page_t mi_slice_t;
// the OS. Inside segments we allocated fixed size _pages_ that
// contain blocks.
typedef struct mi_segment_s {
struct mi_segment_s* next; // the list of freed segments in the cache
volatile _Atomic(struct mi_segment_s*) abandoned_next;
size_t memid; // memory id for arena allocation
bool mem_is_fixed; // `true` if we cannot decommit/reset/protect in this memory (i.e. when allocated using large OS pages)
bool mem_is_committed; // `true` if the whole segment is eagerly committed
// from here is zero initialized
struct mi_segment_s* next; // the list of freed segments in the cache
volatile _Atomic(struct mi_segment_s*) abandoned_next;
size_t abandoned; // abandoned pages (i.e. the original owning thread stopped) (`abandoned <= used`)
size_t used; // count of pages in use
uintptr_t cookie; // verify addresses in debug mode: `mi_ptr_cookie(segment) == segment->cookie`