Sean Farrow writes:

> Hi all,
> I''m currently looking at redesigning an application and changing to
> boost/c++11 library components.  The application reads data from an input,
> processes the data and then send it to an output.

The C++ Middelware Writer (CMW) may be of interest.  The
application you mention sounds similar to the middle tier of the
CMW --
http://webEbenezer.net/build_integration.html
http://webEbenezer.net/misc/cmwAmbassador.hh
http://webEbenezer.net/misc/cmwAmbassador.cc

> The current architecture is one thread per "device" where a device is a
> pair of input/output ports and one processing stage.  What I'd like to
> do is move this to either a publish/subscribe model or some form of
> message-based system where an input comes in and a message is then
> sent to the next stage of the process.  All stages will happen on the same
> physical/virtual machine.  Are there any good pub/subscribe or
> message-based components using the boost architecture that works
> on mac osx/win32.