David Sveningsson schreef:
Hi, I've written an application in c which I would like to start/stop as
a daemon in gnu/linux.
The application has the argument "--daemon" which forks the process and
exits the parent. Then it setups a SIGQUIT signal handler to properly
cleanup and terminate. It also maintains a lockfile (with the pid) so
only one instance is allowed.
So, to start this application I created a php site that calls
exec("/path/to/binary --daemon > /dev/null 2> /dev/null").
Everything is working so far, but I cannot get the application to
receive the SIGQUIT when I start using php and exec. Not even manually
using kill in the shell. It works correctly if I start manually thought.
So, is this possible to do? Doesn't exec allow applications with signal
handlers? Is there some other way to terminate the application?
there is nothing special about exec that makes working with the kill command
different to anything else, though you might take a look at the posix_kill()
command instead. e.g. posix_kill(`cat /path/to/pidfile`, SIGQUIT);
you say you can't even send SIGQUIT to the daemon using kill on the command line,
this suggests the problem lies in the fact that the daemon's signal handler is
not actually working (when the process is daemonized).
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
