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Adding Multitasking Capability to Applications Using Multiprocessing Services

   

Multiple Independent Tasks

In many cases, you can break down applications into different sections that do not necessarily depend on each other but would ideally run concurrently. For example, your application may have one code section to render images on the screen, another to do graphical computations in the background, and a third to download data from a server. Each such section is a natural candidate for preemptive tasking. Even if only one processor is available, it is generally advantageous to have such independent sections run as preemptive tasks. The application can notify the tasks (using any of the three notification mechanisms) and then poll for results within its event loop.


© 1999 Apple Computer, Inc. – (Last Updated 07 May 99)