1 #ifndef JEMALLOC_INTERNAL_TCACHE_EXTERNS_H
2 #define JEMALLOC_INTERNAL_TCACHE_EXTERNS_H
4 #include "jemalloc/internal/size_classes.h"
6 extern bool opt_tcache;
7 extern ssize_t opt_lg_tcache_max;
9 extern cache_bin_info_t *tcache_bin_info;
12 * Number of tcache bins. There are NBINS small-object bins, plus 0 or more
15 extern unsigned nhbins;
17 /* Maximum cached size class. */
18 extern size_t tcache_maxclass;
21 * Explicit tcaches, managed via the tcache.{create,flush,destroy} mallctls and
22 * usable via the MALLOCX_TCACHE() flag. The automatic per thread tcaches are
23 * completely disjoint from this data structure. tcaches starts off as a sparse
24 * array, so it has no physical memory footprint until individual pages are
25 * touched. This allows the entire array to be allocated the first time an
26 * explicit tcache is created without a disproportionate impact on memory usage.
28 extern tcaches_t *tcaches;
30 size_t tcache_salloc(tsdn_t *tsdn, const void *ptr);
31 void tcache_event_hard(tsd_t *tsd, tcache_t *tcache);
32 void *tcache_alloc_small_hard(tsdn_t *tsdn, arena_t *arena, tcache_t *tcache,
33 cache_bin_t *tbin, szind_t binind, bool *tcache_success);
34 void tcache_bin_flush_small(tsd_t *tsd, tcache_t *tcache, cache_bin_t *tbin,
35 szind_t binind, unsigned rem);
36 void tcache_bin_flush_large(tsd_t *tsd, cache_bin_t *tbin, szind_t binind,
37 unsigned rem, tcache_t *tcache);
38 void tcache_arena_reassociate(tsdn_t *tsdn, tcache_t *tcache,
40 tcache_t *tcache_create_explicit(tsd_t *tsd);
41 void tcache_cleanup(tsd_t *tsd);
42 void tcache_stats_merge(tsdn_t *tsdn, tcache_t *tcache, arena_t *arena);
43 bool tcaches_create(tsd_t *tsd, unsigned *r_ind);
44 void tcaches_flush(tsd_t *tsd, unsigned ind);
45 void tcaches_destroy(tsd_t *tsd, unsigned ind);
46 bool tcache_boot(tsdn_t *tsdn);
47 void tcache_arena_associate(tsdn_t *tsdn, tcache_t *tcache, arena_t *arena);
48 void tcache_prefork(tsdn_t *tsdn);
49 void tcache_postfork_parent(tsdn_t *tsdn);
50 void tcache_postfork_child(tsdn_t *tsdn);
51 void tcache_flush(tsd_t *tsd);
52 bool tsd_tcache_data_init(tsd_t *tsd);
53 bool tsd_tcache_enabled_data_init(tsd_t *tsd);
55 #endif /* JEMALLOC_INTERNAL_TCACHE_EXTERNS_H */