[Libevent-users] Atomically block signals in signal event callbacks

[Frank Lahm <fl@xxxxxxxxxx>]

Hi,

I've very recently added libevent to Netatalk, using it for a new 
service controller process which is responsible for starting and 
restarting other daemons (for now). There I use the signal handling 
facility of libevent for handling signals.

Thanks for libevent, I love it!

Now it seems at least in signal event callback, that the callback 
function can be interrrupted from the same signal it is the handler for. 
I noticed this because in a SIGCHLD handler I added a sleep(5) for 
debugging purposes and in a strace I noticed that the sleep got 
interrupted by another SIGCHLD. Afaict there's now way in libevent to 
mimic POSIX signal function semantics of using a sigmask for atomically 
blocking signals while the callback is running, is there?

Thanks!
-f
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