I have forked process running 3 different test process within a perl script. Each of these process runs for a few hours (forked). All the tests are supposed to finish before exiting the forked process and later publish the files. I am using "wait" to do this to avoid zombies. However intermittenly the "wait" doesnt seem to be very robust, since the forked process exits prematurely and the logs gets published (unfinished). I see in the background the zombie process A, B and C still running. Can anyone tell where is the issue. Here is the code I have put together: 
if ($pid = fork()) {
    if ($pid2 = fork()) {
               <process A>;
    } else {
               <process B>;
               exit}
} else {
       <process C>
       exit;
}

1 while wait() > 0;

<publish files>

[download]

Any clues to why this is happening would be appreciated. Is the wait() command all messed up? thanks

In reply to fork exits prematurely leaving zombies by perllearner

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