Path: utzoo!attcan!uunet!husc6!bloom-beacon!apple!voder!wlbr!pete
From: pete@wlbr.EATON.COM (Pete Lyall)
Newsgroups: comp.os.os9
Subject: Re: Help with OS-9 Kernel
Keywords: condemed process status
Message-ID: <24353@wlbr.EATON.COM>
Date: 11 Nov 88 01:46:08 GMT
References: <292@bsovax.UUCP>
Reply-To: pete@wlbr.eaton.com.UUCP (Pete Lyall)
Organization: Eaton IMSD, Westlake Village, CA
Lines: 23

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 'DEAD' (or 'zombie' in Unix terms) is a process that has terminated,
has closed its files and returned its system resources (i.e. code &
data space), but has been unable to notify its parent of its death
yet. In order for the parent to be in a position to recognize the
death, it must issue a f$wait system call. The child will remain
'DEAD' until either the parent does the f$wait, or the parent dies. If
the child has no living parent (PPID = 0), it will not bother
attempting to notify anyone.

I'm not positive about the condemn state, but I believe it's the case
where a process's death is pending, but I/O still needs to be flushed
(or something like that). Again - I'm not sure on the condemned state.

Pete

-- 
Pete Lyall (OS9 Users Group VP)|  DELPHI: OS9UGVP  |  Eaton Corp.(818)-706-5693
Compuserve: 76703,4230 (OS9 Sysop) OS9 (home): (805)-985-0632 (24hr./1200 baud)
Internet: pete@wlbr.eaton.com            UUCP: {hacgate,jplgodo,voder}!wlbr!pete