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Fix/refactor tcaches synchronization.

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Synchronize tcaches with tcaches_mtx rather than ctl_mtx.  Add missing
synchronization for tcache flushing.  This bug was introduced by
1cb181ed63 (Implement explicit tcache
support.), which was first released in 4.0.0.
This commit is contained in:
Jason Evans
2017-01-29 21:32:39 -08:00
parent d0e93ada51
commit 1b6e43507e
6 changed files with 102 additions and 30 deletions
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2
src/ctl.c
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@@ -1477,7 +1477,6 @@ tcache_create_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp,
return ENOENT;
}
malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
READONLY();
if (tcaches_create(tsd, &tcache_ind)) {
ret = EFAULT;
@@ -1487,7 +1486,6 @@ tcache_create_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp,
ret = 0;
label_return:
malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
return ret;
}