630f7de952
1. `thread_tcache_ncached_max_read_sizeclass` allows users to get the
ncached_max of the bin with the input sizeclass, passed in through
oldp (will be upper casted if not an exact bin size is given).
2. `thread_tcache_ncached_max_write` takes in a char array
representing the settings for bins in the tcache.
91 lines
3.9 KiB
C
91 lines
3.9 KiB
C
#ifndef JEMALLOC_INTERNAL_TCACHE_EXTERNS_H
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#define JEMALLOC_INTERNAL_TCACHE_EXTERNS_H
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#include "jemalloc/internal/jemalloc_preamble.h"
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#include "jemalloc/internal/base.h"
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#include "jemalloc/internal/cache_bin.h"
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#include "jemalloc/internal/sz.h"
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#include "jemalloc/internal/tcache_types.h"
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extern bool opt_tcache;
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extern size_t opt_tcache_max;
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extern ssize_t opt_lg_tcache_nslots_mul;
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extern unsigned opt_tcache_nslots_small_min;
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extern unsigned opt_tcache_nslots_small_max;
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extern unsigned opt_tcache_nslots_large;
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extern ssize_t opt_lg_tcache_shift;
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extern size_t opt_tcache_gc_incr_bytes;
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extern size_t opt_tcache_gc_delay_bytes;
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extern unsigned opt_lg_tcache_flush_small_div;
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extern unsigned opt_lg_tcache_flush_large_div;
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/*
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* Number of tcache bins. There are SC_NBINS small-object bins, plus 0 or more
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* large-object bins. This is only used during threads initialization and
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* changing it will not reflect on initialized threads as expected. Thus,
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* it should not be changed on the fly. To change the number of tcache bins
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* in use, refer to tcache_nbins of each tcache.
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*/
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extern unsigned global_do_not_change_tcache_nbins;
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/*
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* Maximum cached size class. Same as above, this is only used during threads
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* initialization and should not be changed. To change the maximum cached size
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* class, refer to tcache_max of each tcache.
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*/
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extern size_t global_do_not_change_tcache_maxclass;
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/*
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* Explicit tcaches, managed via the tcache.{create,flush,destroy} mallctls and
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* usable via the MALLOCX_TCACHE() flag. The automatic per thread tcaches are
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* completely disjoint from this data structure. tcaches starts off as a sparse
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* array, so it has no physical memory footprint until individual pages are
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* touched. This allows the entire array to be allocated the first time an
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* explicit tcache is created without a disproportionate impact on memory usage.
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*/
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extern tcaches_t *tcaches;
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size_t tcache_salloc(tsdn_t *tsdn, const void *ptr);
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void *tcache_alloc_small_hard(tsdn_t *tsdn, arena_t *arena, tcache_t *tcache,
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cache_bin_t *cache_bin, szind_t binind, bool *tcache_success);
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void tcache_bin_flush_small(tsd_t *tsd, tcache_t *tcache,
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cache_bin_t *cache_bin, szind_t binind, unsigned rem);
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void tcache_bin_flush_large(tsd_t *tsd, tcache_t *tcache,
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cache_bin_t *cache_bin, szind_t binind, unsigned rem);
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void tcache_bin_flush_stashed(tsd_t *tsd, tcache_t *tcache,
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cache_bin_t *cache_bin, szind_t binind, bool is_small);
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bool tcache_bins_ncached_max_write(tsd_t *tsd, char *settings, size_t len);
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bool tcache_bin_ncached_max_read(tsd_t *tsd, size_t bin_size,
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cache_bin_sz_t *ncached_max);
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void tcache_arena_reassociate(tsdn_t *tsdn, tcache_slow_t *tcache_slow,
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tcache_t *tcache, arena_t *arena);
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tcache_t *tcache_create_explicit(tsd_t *tsd);
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void thread_tcache_max_set(tsd_t *tsd, size_t tcache_max);
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void tcache_cleanup(tsd_t *tsd);
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void tcache_stats_merge(tsdn_t *tsdn, tcache_t *tcache, arena_t *arena);
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bool tcaches_create(tsd_t *tsd, base_t *base, unsigned *r_ind);
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void tcaches_flush(tsd_t *tsd, unsigned ind);
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void tcaches_destroy(tsd_t *tsd, unsigned ind);
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bool tcache_boot(tsdn_t *tsdn, base_t *base);
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void tcache_arena_associate(tsdn_t *tsdn, tcache_slow_t *tcache_slow,
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tcache_t *tcache, arena_t *arena);
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void tcache_prefork(tsdn_t *tsdn);
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void tcache_postfork_parent(tsdn_t *tsdn);
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void tcache_postfork_child(tsdn_t *tsdn);
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void tcache_flush(tsd_t *tsd);
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bool tsd_tcache_enabled_data_init(tsd_t *tsd);
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void tcache_enabled_set(tsd_t *tsd, bool enabled);
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void tcache_assert_initialized(tcache_t *tcache);
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/* Only accessed by thread event. */
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uint64_t tcache_gc_new_event_wait(tsd_t *tsd);
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uint64_t tcache_gc_postponed_event_wait(tsd_t *tsd);
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void tcache_gc_event_handler(tsd_t *tsd, uint64_t elapsed);
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uint64_t tcache_gc_dalloc_new_event_wait(tsd_t *tsd);
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uint64_t tcache_gc_dalloc_postponed_event_wait(tsd_t *tsd);
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void tcache_gc_dalloc_event_handler(tsd_t *tsd, uint64_t elapsed);
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#endif /* JEMALLOC_INTERNAL_TCACHE_EXTERNS_H */
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