[boulder.pm] unblocked pipes
Rob Nagler
nagler at bivio.com
Wed Aug 2 17:45:20 CDT 2000
Amar Vattakandy wrote:
> | before I read the pipe ?
http://www.perl.com/pub/doc/manual/html/pod/perlipc.html
Look at "select". It allows you to "poll" the pipe. I wouldn't
recommend polling. You might rather consider two processes:
one for reading and one for writing. Really depends on the
application, though.
It might be problematic to use:
$readline = <CHILD>;
This assumes that a newline is returned. If a newline isn't returned
even if select returns true, the <CHILD> call won't return.
Rob
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