Thanks for your quick response. I used the $? Predefined variable and
it works well on my windows computer. However, it doesn't work on
AIX-5.3. It returns only a -1. Must be an AIX POSIX compliance issue.
So I just created my own waitpid function and in combination with
reaper, it works great.
Thanks for all your help!
Jonathon Eastman
Show quoted text-----Original Message-----
From: Jeremy Slade via RT [mailto:bug-reaper@rt.cpan.org]
Sent: Monday, October 01, 2007 8:38 PM
To: Eastman, Jonathon
Subject: Re: [rt.cpan.org #29701] reaper doesn't work with waitpid
function
<URL:
http://rt.cpan.org/Ticket/Display.html?id=29701 >
Reaper is intended for situations where the child can exit at any
(unknown) time -- e.g. when you aren't specifically waiting for it.
What happens with waitpid() is the waitpid() waits until the process is
done, and gets the exit status from the kernel (stored in $?). So some
time later when Reaper also calls waitpid(), the status has already been
retrieved so it's no longer available...
Calling waitpid() yourself is really not compatible with Reaper. If you
want to waitpid() for the process yourself, the exit status is available
immediately after waitpid() returns as $?
waitpid($pid,0);
my $exit = $?;
if ( $exit ) {
# non-zero exit status...
} else {
# exit = 0, child ok
}
Jeremy
Jonathon Eastman via RT wrote:
> Mon Oct 01 18:57:09 2007: Request 29701 was acted upon.
> Transaction: Ticket created by slackeast
> Queue: reaper
> Subject: reaper doesn't work with waitpid function
> Broken in: 1.00
> Severity: Normal
> Owner: Nobody
> Requestors: jonathon.eastman@wellpoint.com
> Status: new
> Ticket <URL:
http://rt.cpan.org/Ticket/Display.html?id=29701 >
>
>
> I've been using th reaper perl modules to get the exit status for a
> forked exec call. It works as long as I don't use the waitpid
> function. I'm not sure if this a bug or end-user ignorance, but is
> there a way around this?
>
> I'm on AIX 5.3
> Using Perl 5.8.8
>
> here's my code, if i take out my waitpid function and put a sleep in
for
> the expected run-time of t1.pl, it works:
>
> use Reaper qw( reaper reapPid pidStatus );
> {
> my $pid = fork;
> if ( $pid == 0 ) { # child
> exec "perl t1.pl";
> }
> reapPid ( $pid );
>
> waitpid($pid,0);
>
> if ( defined(my $exit = pidStatus($pid)) ) {
> print "CHILD OK\n";
> }
> else {
> print "NOT OK\n";
> }
> }
CONFIDENTIALITY NOTICE: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information or otherwise protected by law. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message.
