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add sampling for guarded objects

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daanx
2024-11-17 00:06:16 -08:00
parent 8b6017d976
commit 8ba1879073
10 changed files with 75 additions and 11 deletions
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8
include/mimalloc/types.h
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@@ -502,6 +502,13 @@ struct mi_heap_s {
mi_heap_t* next; // list of heaps per thread
bool no_reclaim; // `true` if this heap should not reclaim abandoned pages
uint8_t tag; // custom tag, can be used for separating heaps based on the object types
#if MI_GUARDED
size_t guarded_size_min; // minimal size for guarded objects
size_t guarded_size_max; // maximal size for guarded objects
size_t guarded_sample_rate; // sample rate (set to 0 to disable guarded pages)
size_t guarded_sample_seed; // starting sample count
size_t guarded_sample_count; // current sample count (wraps at `sample_rate`)
#endif
mi_page_t* pages_free_direct[MI_PAGES_DIRECT]; // optimize: array where every entry points a page with possibly free blocks in the corresponding queue for that size.
mi_page_queue_t pages[MI_BIN_FULL + 1]; // queue of pages for each size class (or "bin")
};
@@ -594,6 +601,7 @@ typedef struct mi_stats_s {
mi_stat_counter_t arena_count;
mi_stat_counter_t arena_crossover_count;
mi_stat_counter_t arena_rollback_count;
mi_stat_counter_t guarded_alloc_count;
#if MI_STAT>1
mi_stat_count_t normal_bins[MI_BIN_HUGE+1];
#endif