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Re: Signal handling problem

by sandfly (Beadle)
on Oct 02, 2003 at 20:57 UTC ( #296083=note: print w/replies, xml ) Need Help??


in reply to Signal handling problem

I can't see exactly what the problem is. Is it possible the SIGCHLD is not breaking you out of the sleep?
It must boil down to one of three things:
1. Your child process isn't dying
2. The child process dies, but the parent isn't reaping it.
3. The child process dies, the parent reaps it, but %child_pids is not clear

I suggest you find out which, using ps, or similar. Most likely it's 2 or 3. Put print statements into the reaping sub; also, change the parent's sleep to sleep 1, and print the %child_pids hash every time round the while loop.

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Re: Re: Signal handling problem
by gnu@perl (Pilgrim) on Oct 02, 2003 at 21:23 UTC
    Been there, but thanks for your help. I think I found out what it was. For some reason, even though I had blocked them, some of the signals were getting through to the child processes and it was acting on them as well.

    What I did was to assign all the $SIG{XXX} = 'DEFAULT' then reassign what I wanted in the child and it seems to work now. This isn't a permanent fix, but it will do until I have more time to track it down.

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