Re: Finding if a child process has terminated

Use kill 0 => $childpid to check; if that returns false and $! == ERSCH then it's not running.

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Re^2: Finding if a child process has terminated by RazorbladeBidet (Friar) on Mar 28, 2005 at 15:42 UTC
Note that I have to add a `$SIG{CHLD}='IGNORE';` [download] for this to work (with no other previous $SIG{CHLD}) Running AIX 5.2 Perl 5.8.0 -------------- "But what of all those sweet words you spoke in private?" "Oh that's just what we call pillow talk, baby, that's all."	[reply] [d/l]
Re^3: Finding if a child process has terminated by Fletch (Bishop) on Mar 28, 2005 at 16:40 UTC
Ah, you're correct. Until something waits on the process it'll still have an entry in the process table and hence be "alive" as far as sending signal 0 goes. Sending signal 0 is probably of more use in checking if an unrelated process (or at least non-descendent process) is alive. Update: And you can see this behavior with the code below. Read more... (939 Bytes)	[reply] [d/l]