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  • in C a file descriptor already only allows one thread to write at a time and will not allow multiple threads to write data causing interleaving of the data? If 2 threads tried to write to their respective FD's at once Thread1:"Hello" and Thread2:"World" the fifo couldn't possibly recieve "HWeolrldo" ? Commented Sep 5, 2012 at 3:24
  • I agree with Jimmy, I think it's better to have multiple FDs so fcntl used by one thread on one FD won't affect the other FD. Commented Sep 5, 2012 at 19:41
  • @poly I was saying to have a shared fd, but in my comment I was asking about the behavior of fd and concurrency in C, I don't know enough about it all Commented Sep 6, 2012 at 1:50
  • @JimmyHoffa - he's using posix / linux with the OS supplied FIFO structure, so the OS provides the concurrency control on access. Commented Sep 6, 2012 at 2:44
  • @GlenH7: wow, that's pretty awesome. Commented Sep 6, 2012 at 2:59