Path: utzoo!attcan!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!decwrl!shelby!rutgers!cbmvax!valentin
From: valentin@cbmvax.commodore.com (Valentin Pepelea)
Newsgroups: comp.sys.amiga.tech
Subject: Re: Task Switching Problem
Message-ID: <15140@cbmvax.commodore.com>
Date: 13 Oct 90 08:44:10 GMT
References: <1990Sep21.180100.28580@uncecs.edu>
Reply-To: valentin@cbmvax.commodore.com (Valentin Pepelea)
Organization: Commodore, West Chester, PA
Lines: 33

In article <1990Oct12.203910.18240@uncecs.edu> utoddl@uncecs.edu (Todd M.
Lewis) writes:
>
> Hmmmm.  Would this work?  What if I had my task Wait() for some
> signal, and have the tc_Switch() routine simply signal my task?

Uh, yes, that should work. But remember to clear the signal you would be
waiting for, since it will get set every time you get switched out. In fact,
you should do that within a Disable():

	Disable();
	   clear signal;
	   Wait(signal<<1);
	Enable();

> This should give me the same effect as Relinquish().
> Can a tc_xxxxx() routine signal safely?

Signal() can be called safely from supervisor mode, from interrupts, from
everything.

> Darn it all--I've got to try this (now that I don't need it 
> anymore, of course).  I just love rewriting code I just threw away.

If you were using the old file system on that disk, then perhaps you can use
DiskSalv to recover your files.

Valentin
-- 
The Goddess of democracy? "The tyrants    Name:    Valentin Pepelea
may destroy a statue,  but they cannot    Phone:   (215) 431-9327
kill a god."                              UseNet:  cbmvax!valentin@uunet.uu.net
             - Ancient Chinese Proverb    Claimer: I not Commodore spokesman be