Path: utzoo!utgpu!attcan!uunet!mcrware!davely
From: davely@mcrware.UUCP (Dave Lyons)
Newsgroups: comp.os.os9
Subject: Re: Help with OS-9 Kernel
Summary: One is dying the other is dead
Keywords: condemed process status
Message-ID: <834@mcrware.UUCP>
Date: 10 Nov 88 16:22:57 GMT
References: <292@bsovax.UUCP>
Organization: Microware Systems Corp., Des Moines, Ia.
Lines: 22

In article <292@bsovax.UUCP>, keith@bsovax.UUCP (Keith Dixon) writes:
> Can anyone tell me what the difference is between a 'dead' status and a
> 'condemned' status in an OS-9 Process Descriptor ??

A process that is condemned has been marked to be exited by the Kernel.  
This is usually the result of a process receiving a deadly signal like
keyboard quit or keyboard interrupt.  Drivers and/or file managers typ-
ically check for condemned processes after a sleep so that they can 
abort io on a process that is dying.  A dead process on the other hand
is one that has finished dying in that all its resources (paths, memory,
etc.) have been released.  The Kernel keeps around the "dead body" until
the parent process can be notified.  You really shouldn't have to concern
yourself with dead processes in a driver since the process will be comp-
letely through using the io system by the time it is dead.  I hope this
explanation helps.

Dave Lyons

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|  The above is a Dave Lyons production so Microware is not  |
|  to be held responsible for it.                            |
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