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Extract bin shard selection out of bin locking

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This commit is contained in:
Yinan Zhang
2020-04-22 17:22:43 -07:00
parent ddb8dc4ad0
commit f28cc2bc87
3 changed files with 23 additions and 22 deletions
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11
src/tcache.c
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@@ -454,9 +454,9 @@ tcache_bin_flush_impl(tsd_t *tsd, tcache_t *tcache, cache_bin_t *cache_bin,
* thread's arena, so the stats didn't get merged.
* Manually do so now.
*/
unsigned binshard;
bin_t *bin = arena_bin_choose_lock(tsdn, tcache_arena,
binind, &binshard);
bin_t *bin = arena_bin_choose(tsdn, tcache_arena,
binind, NULL);
malloc_mutex_lock(tsdn, &bin->lock);
bin->stats.nflushes++;
bin->stats.nrequests += cache_bin->tstats.nrequests;
cache_bin->tstats.nrequests = 0;
@@ -751,9 +751,8 @@ tcache_stats_merge(tsdn_t *tsdn, tcache_t *tcache, arena_t *arena) {
for (unsigned i = 0; i < nhbins; i++) {
cache_bin_t *cache_bin = &tcache->bins[i];
if (i < SC_NBINS) {
unsigned binshard;
bin_t *bin = arena_bin_choose_lock(tsdn, arena, i,
&binshard);
bin_t *bin = arena_bin_choose(tsdn, arena, i, NULL);
malloc_mutex_lock(tsdn, &bin->lock);
bin->stats.nrequests += cache_bin->tstats.nrequests;
malloc_mutex_unlock(tsdn, &bin->lock);
} else {