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track abandoned segments in an arena bitmap instead of with a list

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This commit is contained in:
daanx 2024-02-29 14:27:28 -08:00
parent 7020ed5e52
commit bdda13b880
4 changed files with 122 additions and 176 deletions
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4
include/mimalloc/internal.h
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@ -124,6 +124,10 @@ bool _mi_arena_contains(const void* p);
void _mi_arena_collect(bool force_purge, mi_stats_t* stats);
void _mi_arena_unsafe_destroy_all(mi_stats_t* stats);
bool _mi_arena_segment_clear_abandoned(mi_memid_t memid);
void _mi_arena_segment_mark_abandoned(mi_memid_t memid);
mi_segment_t* _mi_arena_segment_clear_abandoned_next(mi_arena_id_t* current_id, size_t* current_idx);
// "segment-map.c"
void _mi_segment_map_allocated_at(const mi_segment_t* segment);
void _mi_segment_map_freed_at(const mi_segment_t* segment);

1
include/mimalloc/types.h
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@ -373,7 +373,6 @@ typedef struct mi_segment_s {
size_t segment_size; // for huge pages this may be different from `MI_SEGMENT_SIZE`
// 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`
struct mi_segment_s* prev;