commit 0f6c02161793fa1022fe721ed9c1aac3538294b3 Author: Nick Mathewson nickm@torproject.org Date: Mon Nov 14 17:53:45 2011 -0500
Detect failure from event_init() or event_base_new_with_config() --- changes/bug4457 | 1 + src/common/compat_libevent.c | 6 ++++++ 2 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/changes/bug4457 b/changes/bug4457 index d3d9eb3..fe7c95f 100644 --- a/changes/bug4457 +++ b/changes/bug4457 @@ -5,4 +5,5 @@ bug 4457; workaround for Libevent versions 2.0.1-alpha through 2.0.15-stable.
+ - Detect failure to initialize Libevent. Better detection for bug 4457.
diff --git a/src/common/compat_libevent.c b/src/common/compat_libevent.c index 3e35e09..ddb2da6 100644 --- a/src/common/compat_libevent.c +++ b/src/common/compat_libevent.c @@ -179,6 +179,7 @@ tor_libevent_initialize(void) #ifdef HAVE_EVENT2_EVENT_H { struct event_config *cfg = event_config_new(); + tor_assert(cfg);
/* In 0.2.2, we don't use locking at all. Telling Libevent not to try to * turn it on can avoid a needless socketpair() attempt. @@ -193,6 +194,11 @@ tor_libevent_initialize(void) the_event_base = event_init(); #endif
+ if (!the_event_base) { + log_err(LD_GENERAL, "Unable to initialize Libevent: cannot continue."); + exit(1); + } + #if defined(HAVE_EVENT_GET_VERSION) && defined(HAVE_EVENT_GET_METHOD) /* Making this a NOTICE for now so we can link bugs to a libevent versions * or methods better. */