[zeromq-dev] multipart messages in a realtime environment

[Michael Haberler]

Goswin,

Am 17.04.2014 um 11:24 schrieb Goswin von Brederlow <goswin-v-b at web.de>:

> On Wed, Apr 16, 2014 at 08:07:27PM +0200, Michael Haberler wrote:
>> we're using zeroMQ in machinekit (formerly LinuxCNC)
>> 
>> to retain the end-to-end principle, we need to be able to send multipart messages to and from RT threads
>> 
>> that isnt possible with libzmq code since it's C++ and uses dynamic memory allocation
>> 
>> the code which we'll be using is based on a lock-free ringbuffer in shared memory (ring_*), and a multipart framing layer on top of that (bring_*): http://psha.org.ru/cgit/psha/ring/?h=wip-buffer
>> 
>> a proxy thread at the RT boundary translates from zmq to ringbuffer framing and back
>> 
>> just in case somebody has a similar requirement
>> 
>> - Michael
> 
> doesn't zero-copy fix that?

I dont understand what are you are suggesting, could you elaborate?

- Michael