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How can I do non-blocking file I/O in Matlab?

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Sietse
Sietse 2013-5-31
I have two matlab programs/functions. One is a loop that does videoprocessing and controls a device via bluetooth. The other is a simple command processor.
If a command is entered in the command processor the information has to be conveyed to the videoprocessing loop, to influence it. But the processing should not halt. I could use a (unix) pipe to do this, but how can I read whether there is information available on the pipe? Do I really need a dedicated mex-function for this, or use the parallel toolbox where I create 2 processes communicating via a shared variable? (I hoped that fopen would have the O_NONBLOCK option, but alas ...)
Thanks for an answer,
Sietse Achterop

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