Author :
Nick Mathewson
Date :
2010-07-05 14:39:39
Hash :fc5e0a23 Message :Don't race when calling event_active/event_add on a running signal event
There was previously no lock protecting the signal event's
ev_ncalls/ev_pncalls fields, which were accessed by all of
event_signal_closure, event_add_internal, event_del_internal, and
event_active_nolock. This patch fixes this race by using the
current_event_lock in the same way it's used to prevent
event_del_internal from touching an event that's currently running.
Nick Mathewson