Thanks for the reply. My fork routine saves pids of children in another hash to be compared in the processing routine: 

sub StartJob {

    my $pid;
    my $sid = shift;

FORK: {
    if ($pid = fork) {
        #
        # This is the dispatcher!
        #
        $JobPIDs{$pid} = $sid;               # add pid, sid pair to th
+e hash
    }
    elsif ($pid == 0) {
....

[download]

The processing routine goes like this: 

foreach $pid ( keys(%TrappedPIDs) ) {
        $rc = $TrappedPIDs{$pid};

        print " CHECKING: trapped pid: $pid    RC: $rc \n";
        
        if ( exists($JobPIDs{$pid}) and $rc == 0 ) {
           # do the processing ..
        }

[download]
%TrappedPIDs is a global hash. How come it can be different?

In reply to Re^2: hash elements are lost during reaping by umitd
in thread hash elements are lost during reaping by umitd

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