clean up - session/socket/engine stuff removed

src/i_engine.hpp

@@ -1,53 +0,0 @@
-/*
-    Copyright (c) 2007-2009 FastMQ Inc.
-
-    This file is part of 0MQ.
-
-    0MQ is free software; you can redistribute it and/or modify it under
-    the terms of the Lesser GNU General Public License as published by
-    the Free Software Foundation; either version 3 of the License, or
-    (at your option) any later version.
-
-    0MQ is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    Lesser GNU General Public License for more details.
-
-    You should have received a copy of the Lesser GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#ifndef __ZMQ_I_ENGINE_HPP_INCLUDED__
-#define __ZMQ_I_ENGINE_HPP_INCLUDED__
-
-namespace zmq
-{
-
-    //  Generic interface to access engines from MD objects.
-
-    struct i_engine
-    {
-        //  Attach the engine with specified context.
-        virtual void attach (struct i_poller *poller_,
-            struct i_session *session_) = 0;
-
-        //  Detach the engine from the current context.
-        virtual void detach () = 0;
-
-        //  Notify the engine that new messages are available.
-        virtual void revive () = 0;
-
-        //  Called by session when it decides the engine
-        //  should terminate itself.
-        virtual void schedule_terminate () = 0;
-
-        //  Called by normal object termination process.
-        virtual void terminate () = 0;
-
-        //  To be called by MD when terminal shutdown (zmq_term) is in progress.
-        virtual void shutdown () = 0;
-    };
-
-}
-
-#endif