project-base/server-skynet-source-3rd-jemalloc
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Reduce "thread.arena" mallctl contention.

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This resolves #460.
This commit is contained in:
Jason Evans 2016-10-03 10:37:12 -07:00
parent a5a8d7ae8d
commit b6c0867142
1 changed files with 1 additions and 3 deletions
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4
src/ctl.c
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@ -1186,14 +1186,13 @@ thread_arena_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp,
if (oldarena == NULL) if (oldarena == NULL)
return (EAGAIN); return (EAGAIN);
malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
newind = oldind = oldarena->ind; newind = oldind = oldarena->ind;
WRITE(newind, unsigned); WRITE(newind, unsigned);
READ(oldind, unsigned); READ(oldind, unsigned);
if (newind != oldind) { if (newind != oldind) {
arena_t *newarena; arena_t *newarena;
if (newind >= ctl_stats.narenas) { if (newind >= narenas_total_get()) {
/* New arena index is out of range. */ /* New arena index is out of range. */
ret = EFAULT; ret = EFAULT;
goto label_return; goto label_return;
@ -1218,7 +1217,6 @@ thread_arena_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp,
ret = 0; ret = 0;
label_return: label_return:
malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
return (ret); return (ret);
} }