In article <AA20B34D-C599-4979-B66A-E9E1DD79B497 / segment7.net>,
Eric Hodel  <drbrain / segment7.net> wrote:
>On Jan 27, 2006, at 6:53 PM, Marc Soda wrote:
>
>> I'm very new to Ruby, so excuse me if this is a newbie question.   
>> I've can't
>> seem to find much information on different types of IPC in Ruby.
>
>Usually IPC in Ruby is performed via high-level constructs rather  
>than sockets, pipes and shared memory.
>
>> I realize there's sockets, but what about shared memory,
>
>http://moulon.inra.fr/ruby/mmap.html
>
>> message queues, semaphores, etc.
>
>Typically implemented via Distributed Ruby sharing a Queue or other  
>objects from thread.rb (both part of the standard library).
>
>http://segment7.net/projects/ruby/drb/
>
>> I found an extention library, sysvipc, is this it?
>
>sysvipc sounds like a wrapper for System V IPC.  You should be able  
>to find lots of documentation with a Google search.
>
>I recommend you check out DRb, it makes IPC much more sane.

To add to the OP's question:
What if you need to transfer data between two different processes 
very quickly?  If you need speed, wouldn't mmap be the way to go?
Does mmap allow for bidirectional data transfer?

Phil