New to perl trying to fix zombie process bug.I have a script that makes a timed system call in an eval block. 

my $timeout = timed_system_call("/subprocess_a.rb", 3);
if ($timeout == 0) {
  print "success\n";
}
else {
  print "timed out\n";
}

sub timed_system_call {
    my $command = shift;
    my $timeout = shift; # seconds

    my $alarm = 0;
    eval {
        local $SIG{ALRM} = sub {$alarm = 1; kill -15, $child_pid;};
        alarm $timeout;
        system($command);
        alarm 0;
    };
    die $command . " failed with " . $@ if $@ && $alarm != 1; #if alar
+m is not 1, then something else caused exit e.g(ctrl-c)
    alarm 0;
    return $alarm;
}

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I need to, ensure the system() call subprocess is killed after timeout, without killing the parent process. On timeout the program should continue to the else block.

In reply to eval system timeout child process by dasibre

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