[nanomsg] Re: When is it safe to use NN_MSG?
- From: Stefan de Konink <stefan@xxxxxxxxx>
- To: <nanomsg@xxxxxxxxxxxxx>
- Date: Fri, 27 Dec 2013 15:22:13 +0100
On Friday, December 27, 2013 2:45:08 PM CEST, Martin Sustrik wrote:
It's just an implementation detail. The messages are passed down the
stack as simple chunks of memory. Thus, nn_sendmsg concatenates the
iovecs into a single chunk of memory and passes that further.
However, NN_MSG is supposed to provide zero-copy functionality, thus
copying it into a single memory chunk with other iovecs is not an option.
That being said, the library can be improved to pass a *list* of
memory chunks down the stack. It wouldn't be hard to implement, but
would require a lot of work (in terms of LoC).
I would suggest to document this, because this is the answer to the question in
the subject.
Stefan
Other related posts:
