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Use trylock in tcache_bin_flush when possible.

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During tcache gc, use tcache_bin_try_flush_small / _large so that we can skip
items with their bins locked already.
This commit is contained in:
Qi Wang
2017-04-25 13:31:45 -07:00
committed by Qi Wang
parent e2aad5e810
commit 8584adc451
3 changed files with 142 additions and 63 deletions
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30
include/jemalloc/internal/tcache_externs.h
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@@ -27,23 +27,27 @@ extern size_t tcache_maxclass;
*/
extern tcaches_t *tcaches;
size_t tcache_salloc(tsdn_t *tsdn, const void *ptr);
void tcache_event_hard(tsd_t *tsd, tcache_t *tcache);
void *tcache_alloc_small_hard(tsdn_t *tsdn, arena_t *arena, tcache_t *tcache,
size_t tcache_salloc(tsdn_t *tsdn, const void *ptr);
void tcache_event_hard(tsd_t *tsd, tcache_t *tcache);
void *tcache_alloc_small_hard(tsdn_t *tsdn, arena_t *arena, tcache_t *tcache,
tcache_bin_t *tbin, szind_t binind, bool *tcache_success);
void tcache_bin_flush_small(tsd_t *tsd, tcache_t *tcache, tcache_bin_t *tbin,
void tcache_bin_flush_small(tsd_t *tsd, tcache_t *tcache, tcache_bin_t *tbin,
szind_t binind, unsigned rem);
void tcache_bin_flush_large(tsd_t *tsd, tcache_bin_t *tbin, szind_t binind,
unsigned rem, tcache_t *tcache);
void tcache_arena_reassociate(tsdn_t *tsdn, tcache_t *tcache,
unsigned tcache_bin_try_flush_small(tsd_t *tsd, tcache_t *tcache,
tcache_bin_t *tbin, szind_t binind, unsigned rem);
void tcache_bin_flush_large(tsd_t *tsd, tcache_t *tcache, tcache_bin_t *tbin,
szind_t binind, unsigned rem);
unsigned tcache_bin_try_flush_large(tsd_t *tsd, tcache_t *tcache,
tcache_bin_t *tbin, szind_t binind, unsigned rem);
void tcache_arena_reassociate(tsdn_t *tsdn, tcache_t *tcache,
arena_t *arena);
tcache_t *tcache_create_explicit(tsd_t *tsd);
void tcache_cleanup(tsd_t *tsd);
void tcache_stats_merge(tsdn_t *tsdn, tcache_t *tcache, arena_t *arena);
bool tcaches_create(tsd_t *tsd, unsigned *r_ind);
void tcaches_flush(tsd_t *tsd, unsigned ind);
void tcaches_destroy(tsd_t *tsd, unsigned ind);
bool tcache_boot(tsdn_t *tsdn);
void tcache_cleanup(tsd_t *tsd);
void tcache_stats_merge(tsdn_t *tsdn, tcache_t *tcache, arena_t *arena);
bool tcaches_create(tsd_t *tsd, unsigned *r_ind);
void tcaches_flush(tsd_t *tsd, unsigned ind);
void tcaches_destroy(tsd_t *tsd, unsigned ind);
bool tcache_boot(tsdn_t *tsdn);
void tcache_arena_associate(tsdn_t *tsdn, tcache_t *tcache, arena_t *arena);
void tcache_prefork(tsdn_t *tsdn);
void tcache_postfork_parent(tsdn_t *tsdn);

4
include/jemalloc/internal/tcache_inlines.h
View File

@@ -227,8 +227,8 @@ tcache_dalloc_large(tsd_t *tsd, tcache_t *tcache, void *ptr, szind_t binind,
tbin = tcache_large_bin_get(tcache, binind);
tbin_info = &tcache_bin_info[binind];
if (unlikely(tbin->ncached == tbin_info->ncached_max)) {
tcache_bin_flush_large(tsd, tbin, binind,
(tbin_info->ncached_max >> 1), tcache);
tcache_bin_flush_large(tsd, tcache, tbin, binind,
(tbin_info->ncached_max >> 1));
}
assert(tbin->ncached < tbin_info->ncached_max);
tbin->ncached++;