Author :
Nick Mathewson
Date :
2011-04-22 12:01:25
Hash :b683cae3 Message :Avoid race-condition when initializing global locks
Previously, we did stuff like
if (!lock)
EVTHREAD_ALLOC_LOCK(lock,0);
for the evsig base global lock, the arc4random lock, and the debug_map
lock. But that's potentially racy! Instead, we move the
responisiblity for global lock initialization to the functions where
we set up the lock callbacks.
(Rationale: We already require that you set up the locking callbacks
before you create any event_base, and that you do so exatly once.)
Nick Mathewson