Path: utzoo!attcan!uunet!cs.utexas.edu!usc!elroy.jpl.nasa.gov!ncar!tank!gargoyle!oddjob!matt
From: matt@group-w.uchicago.edu (Matt Crawford)
Newsgroups: comp.unix.wizards
Subject: Re: How can a parent find out if one of its children is still alive
Message-ID: <1046@gargoyle.uchicago.edu>
Date: 5 Jun 90 22:41:46 GMT
References: <30408@cup.portal.com> <6334@ozdaltx.UUCP>
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Reply-To: matt@group-w.uchicago.edu (Matt Crawford)
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In-reply-to: toma@ozdaltx.UUCP (Tom Armistead)

) DeadHead@cup.portal.com (Bruce M Ong) writes:
) > 	How can a parent find out if one of its children is still alive
) > or not without

Tom Armistead, wizard-wannabe, answers:
) i.e.:   if( kill( child_pid, 0 ) == -1 )
)             puts( "The child is dead" );

overlooking the possibility that the child exited many minutes ago and
the pid is now being used by some unrelated process.
________________________________________________________
Matt Crawford	     		matt@oddjob.uchicago.edu