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From: utoddl@uncecs.edu (Todd M. Lewis)
Newsgroups: comp.sys.amiga.tech
Subject: Re: Task Switching Problem
Message-ID: <1990Oct8.152923.1447@uncecs.edu>
Date: 8 Oct 90 15:29:23 GMT
References: <1990Sep21.180100.28580@uncecs.edu> <14593@cbmvax.commodore.com> <14900@cbmvax.commodore.com>
Organization: UNC Educational Computing Service
Lines: 29

In article <14900@cbmvax.commodore.com> valentin@cbmvax.commodore.com (Valentin Pepelea) writes:
>A second option would be to use the tc_Switch and tc_Launch vectors of the Task
>structure.  If the TB_SWITCH flag of the tc_Flags entry is set, then the
>routine pointed to by tc_Switch is called every time your task is switched out
>and another one is started. If the TB_LAUNCH flag of the tc_Flags entry is set,
>then the routine pointed to by tc_Launch is called every time your task is
>about to be restarted again.

That should do nicely.  I can use this to keep a count of each task's activations.
My model depends only on how many times tasks have switched, not how much
time each task has used.
>
>Unfortunately, the tc_Switch and tc_Launch functions will be running in
>supervisor mode, therefore you will not be able to call the timer.device
>functions to find out what the current time is. Strike two.

Ground rule double.  I don't need the time.  And I can fake the Relinquish()
call with something like {ULONG i; i=tc_Count; while(i==tc_Count);}
since tc_Count would be updated by tc_Switch().  So I waste a few cycles.

Thanks.  (Why didn't I think of this?)
>
>Valentin
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