57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
#ifndef JEMALLOC_INTERNAL_PAC_H
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#define JEMALLOC_INTERNAL_PAC_H
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/*
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* Page allocator classic; an implementation of the PAI interface that:
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* - Can be used for arenas with custom extent hooks.
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* - Can always satisfy any allocation request (including highly-fragmentary
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* ones).
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* - Can use efficient OS-level zeroing primitives for demand-filled pages.
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*/
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typedef struct pac_s pac_t;
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struct pac_s {
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/*
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* Collections of extents that were previously allocated. These are
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* used when allocating extents, in an attempt to re-use address space.
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*
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* Synchronization: internal.
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*/
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ecache_t ecache_dirty;
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ecache_t ecache_muzzy;
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ecache_t ecache_retained;
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emap_t *emap;
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edata_cache_t *edata_cache;
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/* The grow info for the retained ecache. */
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ecache_grow_t ecache_grow;
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/*
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* Decay-based purging state, responsible for scheduling extent state
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* transitions.
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*
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* Synchronization: via the internal mutex.
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*/
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decay_t decay_dirty; /* dirty --> muzzy */
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decay_t decay_muzzy; /* muzzy --> retained */
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};
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bool pac_init(tsdn_t *tsdn, pac_t *pac, unsigned ind, emap_t *emap,
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edata_cache_t *edata_cache, nstime_t *cur_time, ssize_t dirty_decay_ms,
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ssize_t muzzy_decay_ms);
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bool pac_retain_grow_limit_get_set(tsdn_t *tsdn, pac_t *pac, size_t *old_limit,
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size_t *new_limit);
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static inline ssize_t
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pac_dirty_decay_ms_get(pac_t *pac) {
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return decay_ms_read(&pac->decay_dirty);
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}
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static inline ssize_t
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pac_muzzy_decay_ms_get(pac_t *pac) {
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return decay_ms_read(&pac->decay_muzzy);
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}
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#endif /* JEMALLOC_INTERNAL_PAC_H */
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