On Sat, 23 Jun 2018 21:04:48 -0700 "John Dammeyer" <jo...@autoartisans.com> wrote:
> But we are still talking about a Multi-Tasking, Round Robin Priority Driven > OS right? Like 3 tasks with the same priority are time sliced with equal > processing time? ... Ordinary real time scheduling with EDF as first choice which I never had access to or rate rate-monotonic as second choice is what I prefer then periodicity/priority is different and round robin for equal priority. I think an excellent example of a "hard" although not neccessary critical real time process is to read data from some kind of serial receive buffer. If dead line is set to buffer full and trigger then half full I think this example will fit perfectly with the theory. In case hardware to trigger real time process, usually an interrupt and pirority is available theory will fit with practical implementation. > Inter task communication done with pipes. A task can > suspend on a pipe until it's written to by another one. ... Round robin could be implemented with function calls and usual parameter passing. For round robin any shared memory area will also work. In an operating system this may be implemented as a list there functions which should be called are stored. Different prioriority there tasks can interrupt each other is there semaphores, mutexes, message passing in some form is needed. Could in some cases be implemented with a shared memory area and write one in a shared memory area to indicate then new data is available. Nicklas Karlsson ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
