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Implement free space mask for abandoned segments at the arena level

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Sergiy Kuryata 2025-01-26 17:11:16 -08:00
parent 94bdbe41bb
commit 6a7b0ff591
8 changed files with 224 additions and 115 deletions
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3
include/mimalloc/internal.h
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@ -131,6 +131,9 @@ void _mi_arena_unsafe_destroy_all(mi_stats_t* stats);
bool _mi_arena_segment_clear_abandoned(mi_segment_t* segment);
void _mi_arena_segment_mark_abandoned(mi_segment_t* segment);
void _mi_arena_segment_abandon_begin(mi_segment_t* segment);
void _mi_arena_segment_abandon_end(mi_segment_t* segment);
void _mi_arena_segment_abandoned_mark_free_page(mi_segment_t* segment, size_t free_space_mask);
size_t _mi_arena_segment_abandoned_count(void);
typedef struct mi_arena_field_cursor_s { // abstract

1
include/mimalloc/types.h
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@ -709,6 +709,7 @@ typedef struct mi_segments_tld_s {
mi_span_queue_t large_spans[MI_SEGMENT_BIN_MAX+1]; // free slice spans inside large segments
mi_segment_t* medium_segment;
mi_segment_t* large_segment;
bool freeing_segments_disabled; // used to ensure the state of the heap remains consistent while the excess of segments is being dropped
size_t count; // current number of segments;
size_t peak_count; // peak number of segments
size_t current_size; // current size of all segments