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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 fdba5ad5cc
commit 3ecc3c8486
6 changed files with 113 additions and 41 deletions
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src/jemalloc.c
+3
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@@ -2828,6 +2828,7 @@ _malloc_prefork(void)
witness_prefork(tsd);
/* Acquire all mutexes in a safe order. */
ctl_prefork(tsd_tsdn(tsd));
tcache_prefork(tsd_tsdn(tsd));
malloc_mutex_prefork(tsd_tsdn(tsd), &arenas_lock);
prof_prefork0(tsd_tsdn(tsd));
for (i = 0; i < 3; i++) {
@@ -2887,6 +2888,7 @@ _malloc_postfork(void)
}
prof_postfork_parent(tsd_tsdn(tsd));
malloc_mutex_postfork_parent(tsd_tsdn(tsd), &arenas_lock);
tcache_postfork_parent(tsd_tsdn(tsd));
ctl_postfork_parent(tsd_tsdn(tsd));
}
@@ -2911,6 +2913,7 @@ jemalloc_postfork_child(void)
}
prof_postfork_child(tsd_tsdn(tsd));
malloc_mutex_postfork_child(tsd_tsdn(tsd), &arenas_lock);
tcache_postfork_child(tsd_tsdn(tsd));
ctl_postfork_child(tsd_tsdn(tsd));
}