Re: Problems with PERL 5.10 and system pipe
On Thu, 24 Sep 2009 15:58:30 +0300, Damyan Ivanov wrote:
> > gregoa@colleen:~$ perl -MFcntl -e 'sysopen(PH, "/tmp/fifo", O_NONBLOCK)'
> > gregoa@colleen:~$
> But is the file handle returned ready to be read from?
> $ perl -MFcntl -we 'use autodie; use strict; sysopen(PH, "test",
> O_NONBLOCK); print readline(PH)'
> (i.e. no hang even on reads)
> And this doesn't read from the pipe even if I do "echo some > test"
> beforehand. Something is not right.
Right, it seems to read if something's written to the pipe at the
moment of reading.
gregoa@colleen:~$ while :; do echo bla > /tmp/fifo ; sleep 1 ; done
gregoa@colleen:~$ perl -MFcntl -e 'sysopen(PH, "/tmp/fifo", O_NONBLOCK); print readline(PH)'
Sometimes echos 'bla' and sometimes not.
Hm, somethings missing in the puzzle.
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