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allow per page purging instead of reset

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daanx 2023-04-08 17:37:58 -07:00
parent 6bd591d675
commit eb62caeda0
7 changed files with 111 additions and 145 deletions
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9
include/mimalloc.h
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@ -327,8 +327,8 @@ typedef enum mi_option_e {
mi_option_reserve_huge_os_pages_at, // reserve huge OS pages at a specific NUMA node
mi_option_reserve_os_memory, // reserve specified amount of OS memory at startup
mi_option_deprecated_segment_cache,
mi_option_page_reset,
mi_option_abandoned_page_reset,
mi_option_deprecated_page_reset,
mi_option_abandoned_page_purge,
mi_option_deprecated_segment_reset,
mi_option_eager_commit_delay,
mi_option_purge_delay,
@ -340,7 +340,7 @@ typedef enum mi_option_e {
mi_option_max_segment_reclaim,
mi_option_destroy_on_exit,
mi_option_arena_reserve,
mi_option_arena_purge_delay,
mi_option_arena_purge_mult,
mi_option_allow_purge,
mi_option_purge_extend_delay,
_mi_option_last,
@ -348,7 +348,8 @@ typedef enum mi_option_e {
mi_option_large_os_pages = mi_option_allow_large_os_pages,
mi_option_eager_region_commit = mi_option_arena_eager_commit,
mi_option_reset_decommits = mi_option_purge_decommits,
mi_option_reset_delay = mi_option_purge_delay
mi_option_reset_delay = mi_option_purge_delay,
mi_option_abandoned_page_reset = mi_option_abandoned_page_purge
} mi_option_t;

7
include/mimalloc/types.h
View file

@ -284,7 +284,6 @@ typedef struct mi_page_s {
// "owned" by the segment
uint8_t segment_idx; // index in the segment `pages` array, `page == &segment->pages[page->segment_idx]`
uint8_t segment_in_use:1; // `true` if the segment allocated this page
uint8_t is_reset:1; // `true` if the page memory was reset
uint8_t is_committed:1; // `true` if the page virtual memory is committed
uint8_t is_zero_init:1; // `true` if the page was zero initialized
@ -327,10 +326,14 @@ typedef struct mi_segment_s {
// memory fields
size_t memid; // id for the os-level memory manager
bool mem_is_pinned; // `true` if we cannot decommit/reset/protect in this memory (i.e. when allocated using large OS pages)
bool mem_is_large; // `true` if the memory is in OS large or huge pages. (`is_pinned` will be true)
bool mem_is_committed; // `true` if the whole segment is eagerly committed
size_t mem_alignment; // page alignment for huge pages (only used for alignment > MI_ALIGNMENT_MAX)
size_t mem_align_offset; // offset for huge page alignment (only used for alignment > MI_ALIGNMENT_MAX)
bool allow_decommit;
bool allow_purge;
// segment fields
_Atomic(struct mi_segment_s*) abandoned_next;
struct mi_segment_s* next; // must be the first segment field after abandoned_next -- see `segment.c:segment_init`
@ -553,7 +556,7 @@ typedef struct mi_os_tld_s {
typedef struct mi_segments_tld_s {
mi_segment_queue_t small_free; // queue of segments with free small pages
mi_segment_queue_t medium_free; // queue of segments with free medium pages
mi_page_queue_t pages_reset; // queue of freed pages that can be reset
mi_page_queue_t pages_purge; // queue of freed pages that are delay purged
size_t count; // current number of segments;
size_t peak_count; // peak number of segments
size_t current_size; // current size of all segments