On Wed, Apr 21, 2010 at 11:30:32PM -0400, Marcus D. Leech wrote: > On 04/21/2010 11:26 PM, Eric Blossom wrote: > > On Tue, Apr 20, 2010 at 02:57:04PM +0200, Joachim Roop wrote: > > > >> Hi, > >> I am trying to write to a linux pipe/fifo, but sadly this seems to freeze > >> python. I am using Ubuntu 10.04 and gnuradio 3.2.2.dfsg-1ubuntu1. > >> Please try to execute the code and tell me why this makes the app pause. > >> > > $ man 3 mkfifo > > > > Opening a fifo for reading blocks until there is a writer and vice versa... > > > > Eric > > > > > > > Actually, an open for read will *always* succeed, lest you create > unpleasant deadlock situations...
Hmmm. FWIW, from Linux: man 3 mkfifo Opening a FIFO for reading normally blocks until some other process opens the same FIFO for writing, and vice versa. See fifo(7) for non-blocking handling of FIFO special files. Eric _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
