From: Gary Wright <gwtmp01@...>
Date: 2007-10-11T06:55:43+09:00
Subject: Re: Inter-Process Messaging


On Oct 10, 2007, at 5:03 PM, Joel VanderWerf wrote:

> Gary Wright wrote:
>> Daniel DeLorme wrote:
>>> Right now I can think of some messaging primitives:
>>> - TCPServer/TCPSocket
>>> - UNIXServer/UNIXSocket (unstable?)
>>> - IO.pipe (doesn't need port#)
>>> - Process.kill (impossible to send data)
>> Not that it would be useful but I guess that if you used
>> two different signals (say SIGUSR1 and SIGUSR2) then you've
>> got a method of communicating a sequence of binary digits
>> to another process.  If you've got a reasonably accurate
>> way of timing things you could just manage this with a single
>> signal because the absence of the signal could be detected.
>
> I smell a ruby quiz: implement drb messaging on top of sigusr[12].

Hmm.  It would be difficult.  Since signals are not reliable
in general, you would probably first have to construct the
equivalent of TCP/IP across signals.  Drb messaging should be
easy after that...

Gary Wright