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| author | Nick Mathewson <nickm@torproject.org> | 2010-11-19 22:22:43 -0500 |
|---|---|---|
| committer | Nick Mathewson <nickm@torproject.org> | 2010-11-19 22:22:43 -0500 |
| commit | 6199ac5fbec7f8a862440a8b65f7f299de4c2dbf (patch) | |
| tree | 4bbb1629fde78b71981ec4205e65927023b3efea /src/common/torlog.h | |
| parent | a33b338c5bf5e40037f465c0257a70dedb095e82 (diff) | |
| download | tor-6199ac5fbec7f8a862440a8b65f7f299de4c2dbf.tar tor-6199ac5fbec7f8a862440a8b65f7f299de4c2dbf.tar.gz | |
Do not send Libevent log messages to a controller.
Doing so could make Libevent call Libevent from inside a Libevent
logging call, which is a recipe for reentrant confusion and
hard-to-debug crashes. This would especially hurt if Libevent
debug-level logging is enabled AND the user has a controller
watching for low-severity log messages.
Fix bug 2190; fix on 0.1.0.2-rc.
Diffstat (limited to 'src/common/torlog.h')
| -rw-r--r-- | src/common/torlog.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/common/torlog.h b/src/common/torlog.h index 21219569e..8b6cd1bf0 100644 --- a/src/common/torlog.h +++ b/src/common/torlog.h @@ -95,6 +95,10 @@ /** Number of logging domains in the code. */ #define N_LOGGING_DOMAINS 20 +/** This log message is not safe to send to a callback-based logger. + * Used as a flag, not a log domain. */ +#define LD_NOCB (1u<<31) + typedef uint32_t log_domain_mask_t; /** Configures which severities are logged for each logging domain for a given |