CPU time-sharing

What is the general idea for doling out X% of CPU time to each operation?

Generalizations are o.k.

Code is fine,too.

It enables a single processor to apparently do more than one thing at a time. Is that what you mean?

No, no.

Let's say we have a theoretical application.

Now in this application, we have one specific task(such as video, say) which we would like to dedicate more CPU time than Windows would have allocated for that task(assuming Windows reserves the same amount for each task). How would this be addressed?

Further, let's say we have a task that requires much less CPU time than Windows would have allocated for that task(again, assuming that Windows reserves the same amount for each and every task). How could I give the instuctions to lessen this dedicated CPU time?(This second question may be moot since the task probably would volantarily release the CPU before it's (alloted)"time" runs out anyway).

So how do I control/modify this process?

That's the general idea,anyway.

This is explained in great detail in the MSDN in the part about Processes and Threads. Take a look at the Scheduling Priorities article.

I think that's more of an OS thing than a programming thing.
I suppose you might try using threads in the app. That way you can suspend process execution of certain parts of the program, but if you're looking to specify a time I"m not sure how you do it if you even can. (It defeats the purpose of a multitasking system)

-if there were a way to specify the section of your code as a critical block then the OS shouldn't interrupt its execution, at least that's in theory.

Thanx lmov...

That link was exactly what I was looking for!

I will bookmark the site for further reference...

yes 1+1 is 2