diff options
Diffstat (limited to 'source/luametatex/source/libraries/mimalloc/src/arena.c')
-rw-r--r-- | source/luametatex/source/libraries/mimalloc/src/arena.c | 29 |
1 files changed, 10 insertions, 19 deletions
diff --git a/source/luametatex/source/libraries/mimalloc/src/arena.c b/source/luametatex/source/libraries/mimalloc/src/arena.c index 80dd47869..43defe009 100644 --- a/source/luametatex/source/libraries/mimalloc/src/arena.c +++ b/source/luametatex/source/libraries/mimalloc/src/arena.c @@ -11,18 +11,16 @@ large blocks (>= MI_ARENA_MIN_BLOCK_SIZE, 4MiB). In contrast to the rest of mimalloc, the arenas are shared between threads and need to be accessed using atomic operations. -Currently arenas are only used to for huge OS page (1GiB) reservations, -or direct OS memory reservations -- otherwise it delegates to direct allocation from the OS. -In the future, we can expose an API to manually add more kinds of arenas -which is sometimes needed for embedded devices or shared memory for example. -(We can also employ this with WASI or `sbrk` systems to reserve large arenas - on demand and be able to reuse them efficiently). +Arenas are used to for huge OS page (1GiB) reservations or for reserving +OS memory upfront which can be improve performance or is sometimes needed +on embedded devices. We can also employ this with WASI or `sbrk` systems +to reserve large arenas upfront and be able to reuse the memory more effectively. The arena allocation needs to be thread safe and we use an atomic bitmap to allocate. -----------------------------------------------------------------------------*/ #include "mimalloc.h" -#include "mimalloc-internal.h" -#include "mimalloc-atomic.h" +#include "mimalloc/internal.h" +#include "mimalloc/atomic.h" #include <string.h> // memset #include <errno.h> // ENOMEM @@ -30,17 +28,6 @@ The arena allocation needs to be thread safe and we use an atomic bitmap to allo #include "bitmap.h" // atomic bitmap -// os.c -void* _mi_os_alloc_aligned(size_t size, size_t alignment, bool commit, bool* large, mi_stats_t* stats); -void _mi_os_free_ex(void* p, size_t size, bool was_committed, mi_stats_t* stats); - -void* _mi_os_alloc_huge_os_pages(size_t pages, int numa_node, mi_msecs_t max_secs, size_t* pages_reserved, size_t* psize); -void _mi_os_free_huge_pages(void* p, size_t size, mi_stats_t* stats); - -bool _mi_os_commit(void* p, size_t size, bool* is_zero, mi_stats_t* stats); -bool _mi_os_decommit(void* addr, size_t size, mi_stats_t* stats); - - /* ----------------------------------------------------------- Arena allocation ----------------------------------------------------------- */ @@ -130,6 +117,10 @@ bool _mi_arena_memid_is_suitable(size_t arena_memid, mi_arena_id_t request_arena return mi_arena_id_is_suitable(id, exclusive, request_arena_id); } +bool _mi_arena_is_os_allocated(size_t arena_memid) { + return (arena_memid == MI_MEMID_OS); +} + static size_t mi_block_count_of_size(size_t size) { return _mi_divide_up(size, MI_ARENA_BLOCK_SIZE); } |