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Bi-Directional interprocess comms on Unix

Bi-Directional interprocess comms on Unix

Bi-Directional interprocess comms on Unix

(OP)
Morning,
    I am trying to learn a thing or two about using Open2/3 and Select and Sysread etc.. to get two process to talk to each other. One is a perl program the other a unix command line utility. I can get STDIN, STDOUT and STDERR to show up in my Perl proggy.. but I keep getting a deadlock situation.

    The various books I have are of little help, they say things like "deadlock can occur" and then give no reasons as to why...

    Could anyone who knows what I am talking about post the address of a good tutorial or a segment of code using the above functions?

    Your's in grateful anticipation
    Loon


RE: Bi-Directional interprocess comms on Unix

Loon,

I've always done this kind of thing using two named pipes; each process listening on one of the pipes and replying on the other.

This is because I'm a coward <smile>. All of the references to open2 etc I've come across talk about deadlocks and give no clue how to continue -- so I do things the easy way.

Mike
Mike_Lacey@Cargill.Com
Cargill's Corporate Web Site
Please don't send me email questions without posting them in Tek-Tips as well. Better yet -- Post the question in Tek-Tips and send me a note saying "Have a look at so-and-so in the thingy forum would you?"

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