Lyle Kopnicky wrote:
Hi folks,
I've written my program to trap a SIGQUIT and gracefully exit, because
that's what it gets if it's being run in a command prompt and I close
it. It will do the same for a SIGINT (Ctrl+C).
Sorry, I meant to say gets a SIGQUIT on user logout or system shutdown.
It gets a SIGHUP when I close the command prompt.
It runs as an HTTP server, so it's supposed to stay up continuously.
I am launching it through an 'at' command in the morning (the server
reboots each night).
For some reason, on some occasions, the program is receiving a SIGQUIT
and shutting down. I know this because it logs that fact. This
happened, for example, last Wednesday and today.
Why would a System process started by the scheduler receive a
SIGQUIT? I don't believe anyone's going in there trying to kill it.
I could solve this problem by making it ignore SIGQUIT, but I wanted
it to behave gracefully when I close a command prompt from which I am
running it. I would rather find out why it is receiving this signal.
I mean, when the system shuts down. But, it doesn't always seem to get
that SIGQUIT when the system shuts down, either. :(
Any ideas?
--
Lyle Kopnicky
Software Project Engineer
Veicon Technology, Inc.
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