Re: $? outside SIGCHLD handler

ug, use IO::Select. It's a thin wrapper over select that's *much* easier to use than the underlying function.

You didn't show your signal handler. If it calls wait or waitpid, don't call wait or waitpid outside of the handler. Save the result from the handler, if you need to.

my %reaped;

$SIG{CHLD} = sub {
    my $pid = wait();
    $reaped{$pid} = $?;
};


# When reading from read ready handle returns eof,
my $exit_code = delete $reaped{$pid_associated_with_handle};
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Comment on Re: $? outside SIGCHLD handler Select or Download Code

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Re^2: $? outside SIGCHLD handler by Anonymous Monk on Sep 08, 2009 at 18:24 UTC
Hello. Sorry for long delay, I had no access to internet during weekend. I'll probably switch to IO::Select later, select() code works fine so far. Code for CHLD handler is after "CHLD handler does just this ..." in my original post (No wait()/waitpid() calls inside). I was just confused by sentence from "perlvar" (see end of orig post).	[reply]
Re^3: $? outside SIGCHLD handler by kenshin (Initiate) on Sep 08, 2009 at 18:26 UTC
I forgot to log in. The reply above is mine.	[reply]