Message-related functionality factored out into msg_t class.

This patch addresses serveral issues:
1. It gathers message related functionality scattered over whole
   codebase into a single class.
2. It makes zmq_msg_t an opaque datatype. Internals of the class
   don't pollute zmq.h header file.
3. zmq_msg_t size decreases from 48 to 32 bytes. That saves ~33%
   of memory in scenarios with large amount of small messages.

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/fq.hpp b/src/fq.hpp
index 8c6c95c..c35d458 100644
--- a/src/fq.hpp
+++ b/src/fq.hpp
@@ -23,6 +23,7 @@
 
 #include "array.hpp"
 #include "pipe.hpp"
+#include "msg.hpp"
 
 namespace zmq
 {
@@ -40,7 +41,7 @@ namespace zmq
         void attach (reader_t *pipe_);
         void terminate ();
 
-        int recv (zmq_msg_t *msg_, int flags_);
+        int recv (msg_t *msg_, int flags_);
         bool has_in ();
 
         //  i_reader_events implementation.