Path: utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!mailrus!uflorida!haven!adm!news
From: Postmaster%BRFAPESP.BITNET@uicvm.uic.edu (PMDF Mail Server)
Newsgroups: comp.unix.internals
Subject: Undeliverable mail
Message-ID: <24374@adm.BRL.MIL>
Date: 3 Sep 90 22:22:16 GMT
Sender: news@adm.BRL.MIL
Lines: 43

Your message could not be delivered to:

    Multiple recipients of list UNIX-WIZ <UNIX-WIZ@NDSUVM1.BITNET>

Your message has been enqueued and undeliverable for 12 days.
No further attempts will be made to deliver your messsage.

Your entire message follows:

Wizards:

I've felt the need for need for a new tool that Sun doesn't have.

Ever have a process that's been running for six weeks, and will
need another week to finish when you need to make level 0 backups
or would like to shut the computer down for a bad storm.

I need a tool that would stop a running process and let it be
restarted at a later date.

I've thought of a couple of ways it might be done:

1.  Processes that you know will run a long time might be run
from a parent or with an other that periodically saves an image
of the program.  If the machine is stopped, the job can be
restarted from the last checkpoint.

2.  Similarly, a signal could be sent to a process (like SIGINT)
which would stop the process and save a current image.  When you
wished, you could start the process again with a load and continue
to the process.

3.  Or you could have a ROLLOUT instruction instead of issuing a
halt.  A "picture" of memory is taken (minus space needed to run
the process doing this).  At boot up, you would be given the option
of starting the machine where you stopped.



reply to:
                mth@rolf.stat.uga.edu

on the internet, thanx.