That's normal FIFO behaviour! From `man 3 mkfifo`: > Opening a FIFO for reading normally blocks until some other process opens the same FIFO for writing, and vice versa.
Remember, the GRC file is just converted to a Python program, in which the different blocks are instantiated sequentially. Now, the problem follows is that you can't even initialize the file source if the file sink doesn't finish initializing, or the other way around, whichever comes first. Best regards, Marcus On Wed, 2018-06-20 at 10:52 +0000, Amirhosein naseri wrote: > Hi everybody, > > I have a simple GRC like this: > > Signal Source ------> Throttle ------> File Sink > File Source ------> Throttle -----> Qt Freq Sink > > and i have a Piped File with mkfifo that GRC work with it. but when i run GRC > , it freezes ....... Why??? > > > Tnx?? > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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