64e458f5cd
Split decay-based purging into two phases, the first of which uses lazy
purging to convert dirty pages to "muzzy", and the second of which uses
forced purging, decommit, or unmapping to convert pages to clean or
destroy them altogether. Not all operating systems support lazy
purging, yet the application may provide extent hooks that implement
lazy purging, so care must be taken to dynamically omit the first phase
when necessary.
The mallctl interfaces change as follows:
- opt.decay_time --> opt.{dirty,muzzy}_decay_time
- arena.<i>.decay_time --> arena.<i>.{dirty,muzzy}_decay_time
- arenas.decay_time --> arenas.{dirty,muzzy}_decay_time
- stats.arenas.<i>.pdirty --> stats.arenas.<i>.p{dirty,muzzy}
- stats.arenas.<i>.{npurge,nmadvise,purged} -->
stats.arenas.<i>.{dirty,muzzy}_{npurge,nmadvise,purged}
This resolves #521.
103 lines
4.6 KiB
C
103 lines
4.6 KiB
C
#ifndef JEMALLOC_INTERNAL_ARENA_EXTERNS_H
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#define JEMALLOC_INTERNAL_ARENA_EXTERNS_H
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static const size_t large_pad =
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#ifdef JEMALLOC_CACHE_OBLIVIOUS
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PAGE
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#else
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0
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#endif
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;
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extern ssize_t opt_dirty_decay_time;
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extern ssize_t opt_muzzy_decay_time;
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extern const arena_bin_info_t arena_bin_info[NBINS];
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extern percpu_arena_mode_t percpu_arena_mode;
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extern const char *opt_percpu_arena;
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extern const char *percpu_arena_mode_names[];
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void arena_stats_large_nrequests_add(tsdn_t *tsdn, arena_stats_t *arena_stats,
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szind_t szind, uint64_t nrequests);
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void arena_stats_mapped_add(tsdn_t *tsdn, arena_stats_t *arena_stats,
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size_t size);
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void arena_basic_stats_merge(tsdn_t *tsdn, arena_t *arena,
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unsigned *nthreads, const char **dss, ssize_t *dirty_decay_time,
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ssize_t *muzzy_decay_time, size_t *nactive, size_t *ndirty, size_t *nmuzzy);
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void arena_stats_merge(tsdn_t *tsdn, arena_t *arena, unsigned *nthreads,
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const char **dss, ssize_t *dirty_decay_time, ssize_t *muzzy_decay_time,
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size_t *nactive, size_t *ndirty, size_t *nmuzzy, arena_stats_t *astats,
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malloc_bin_stats_t *bstats, malloc_large_stats_t *lstats);
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void arena_extents_dirty_dalloc(tsdn_t *tsdn, arena_t *arena,
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extent_hooks_t **r_extent_hooks, extent_t *extent);
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#ifdef JEMALLOC_JET
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size_t arena_slab_regind(extent_t *slab, szind_t binind, const void *ptr);
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#endif
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extent_t *arena_extent_alloc_large(tsdn_t *tsdn, arena_t *arena,
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size_t usize, size_t alignment, bool *zero);
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void arena_extent_dalloc_large_prep(tsdn_t *tsdn, arena_t *arena,
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extent_t *extent);
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void arena_extent_ralloc_large_shrink(tsdn_t *tsdn, arena_t *arena,
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extent_t *extent, size_t oldsize);
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void arena_extent_ralloc_large_expand(tsdn_t *tsdn, arena_t *arena,
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extent_t *extent, size_t oldsize);
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ssize_t arena_dirty_decay_time_get(arena_t *arena);
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bool arena_dirty_decay_time_set(tsdn_t *tsdn, arena_t *arena,
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ssize_t decay_time);
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ssize_t arena_muzzy_decay_time_get(arena_t *arena);
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bool arena_muzzy_decay_time_set(tsdn_t *tsdn, arena_t *arena,
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ssize_t decay_time);
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void arena_decay(tsdn_t *tsdn, arena_t *arena, bool all);
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void arena_reset(tsd_t *tsd, arena_t *arena);
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void arena_destroy(tsd_t *tsd, arena_t *arena);
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void arena_tcache_fill_small(tsdn_t *tsdn, arena_t *arena,
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tcache_bin_t *tbin, szind_t binind, uint64_t prof_accumbytes);
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void arena_alloc_junk_small(void *ptr, const arena_bin_info_t *bin_info,
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bool zero);
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#ifdef JEMALLOC_JET
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typedef void (arena_dalloc_junk_small_t)(void *, const arena_bin_info_t *);
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extern arena_dalloc_junk_small_t *arena_dalloc_junk_small;
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#else
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void arena_dalloc_junk_small(void *ptr, const arena_bin_info_t *bin_info);
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#endif
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void *arena_malloc_hard(tsdn_t *tsdn, arena_t *arena, size_t size,
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szind_t ind, bool zero);
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void *arena_palloc(tsdn_t *tsdn, arena_t *arena, size_t usize,
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size_t alignment, bool zero, tcache_t *tcache);
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void arena_prof_promote(tsdn_t *tsdn, extent_t *extent, const void *ptr,
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size_t usize);
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void arena_dalloc_promoted(tsdn_t *tsdn, extent_t *extent, void *ptr,
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tcache_t *tcache, bool slow_path);
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void arena_dalloc_bin_junked_locked(tsdn_t *tsdn, arena_t *arena,
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extent_t *extent, void *ptr);
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void arena_dalloc_small(tsdn_t *tsdn, arena_t *arena, extent_t *extent,
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void *ptr);
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bool arena_ralloc_no_move(tsdn_t *tsdn, extent_t *extent, void *ptr,
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size_t oldsize, size_t size, size_t extra, bool zero);
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void *arena_ralloc(tsdn_t *tsdn, arena_t *arena, extent_t *extent, void *ptr,
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size_t oldsize, size_t size, size_t alignment, bool zero, tcache_t *tcache);
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dss_prec_t arena_dss_prec_get(arena_t *arena);
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bool arena_dss_prec_set(arena_t *arena, dss_prec_t dss_prec);
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ssize_t arena_dirty_decay_time_default_get(void);
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bool arena_dirty_decay_time_default_set(ssize_t decay_time);
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ssize_t arena_muzzy_decay_time_default_get(void);
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bool arena_muzzy_decay_time_default_set(ssize_t decay_time);
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unsigned arena_nthreads_get(arena_t *arena, bool internal);
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void arena_nthreads_inc(arena_t *arena, bool internal);
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void arena_nthreads_dec(arena_t *arena, bool internal);
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size_t arena_extent_sn_next(arena_t *arena);
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arena_t *arena_new(tsdn_t *tsdn, unsigned ind, extent_hooks_t *extent_hooks);
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void arena_boot(void);
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void arena_prefork0(tsdn_t *tsdn, arena_t *arena);
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void arena_prefork1(tsdn_t *tsdn, arena_t *arena);
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void arena_prefork2(tsdn_t *tsdn, arena_t *arena);
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void arena_prefork3(tsdn_t *tsdn, arena_t *arena);
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void arena_prefork4(tsdn_t *tsdn, arena_t *arena);
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void arena_prefork5(tsdn_t *tsdn, arena_t *arena);
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void arena_prefork6(tsdn_t *tsdn, arena_t *arena);
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void arena_postfork_parent(tsdn_t *tsdn, arena_t *arena);
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void arena_postfork_child(tsdn_t *tsdn, arena_t *arena);
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#endif /* JEMALLOC_INTERNAL_ARENA_EXTERNS_H */
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