Michael Polak wrote:
>
> On Fri, 21 Jul 2000, arachne-digest wrote:
>
> >
> > DOS programs, even most TSRs, run in single task mode because there is no
> > Task Manager. There is NO reason why you couldn't have multiple DOS programs
> > running semi-simultaneously (semi is all even Linux can get) if you have a
>
> Linux multitasking is real pre-emptive multitasking, not semimultitaksing
I said semi-simultaneous. There can be no disagreement over the meaning
of simultaneous, while the meaning of multi-tasking is open to agrument.
I run Arachne in DOS. I run Autocad in DOS. That can easily be called
multitasking even if I do them a week apart.<G> I know that that isn't
the common understanding of the word but it works with my dictionary.
> or cooperative multitasking or whatever. Inside tasks, you can use
> additionaly multithreading (I do this, in Linux Arachne, for some stuff)
>
> > simple task manager. As long as you are talking about programs that ALREADY
> > have their own memory allocated - like TSRs - they could run simultaneous
> > with the primary program running in main memory.
>
> This is not real multitasking, as you have no control over which priority
> which task gets, you cannot easily kill tasks, etc...
Whatever the words REAL multitasking might mean to different observers isn't
important - the truth is that the Task Manager I speak of DOES assign the
priorities in a re-programmable manner, including the ability to suspend.
> > That Task Manager could be VERY simple and VERY small.
> > I would write it if I was sure no one would complain because they can't run
> > two Arachne windows at the same time.<g>
>
> This should be possible, if 1) there is some API for graphical
> applications to be told to redraw (Arachne in fact can catch Alt+Tab
> events and redraw itself, because of such task managers) 2) there is API
> for apps to be able to learn if they are background or foreground process,
> and to be able to communicate withpreviously launched copy of the
> application, instead of trying to access network directly.
My last point was that I didn't even want to try to do THAT. <G>
But if the manager switches foreground jobs then the MANAGER should
reload the video buffer. Otherwise it's hardly transparant is it ?
- Clarence Verge
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- Clarence Verge
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- Help stamp out FATWARE. As a start visit: http://home.arachne.cz/
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