>
>> my $kid = waitpid($child_pid, 0);
>>
>> redo if $kid != $child_pid; # So goes back to start of loop from
here
>>
>> unless( 0==$? ) # And never performs this test
>> {
>> die ("Oh No! An external process has failed!!\n");
>> }
>> }
>>
>>
>> That makes most sense to me but I'm not sure how to test if my
>> assumption is correct. (I'd have to somehow get the system to return
a
>> pid/status for a different process)
>
>In general, you will want to test for errors as soon as possible. If
>you get an error, how do you know waitpid will ever work correctly
again?
OK, I'm clearly being dense here then. My understanding was that the
"$?" contained the status of the pid returned by waidpid.
If waitpid returned a pid from some other process (i.e. not one of my
children) that had failed (i.e return status other than 0) then wouldn't
my test abort the script when it wouldn't need to (as the process that
failed wasn't one of my children) before it got to the redo?
Or have I firmly grasped the wrong end of the stick?
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