listener/connecter/init/session added

src/zmq_init.cpp

@@ -0,0 +1,110 @@
+/*
+    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/>.
+*/
+
+#include "zmq_init.hpp"
+#include "io_thread.hpp"
+#include "session.hpp"
+#include "err.hpp"
+
+zmq::zmq_init_t::zmq_init_t (io_thread_t *parent_, object_t *owner_, fd_t fd_,
+      bool connected_, const options_t &options_) :
+    owned_t (parent_, owner_),
+    connected (connected_),
+    options (options_)
+{
+    //  Create associated engine object.
+    engine = new zmq_engine_t (parent_, fd_);
+    zmq_assert (engine);
+}
+
+zmq::zmq_init_t::~zmq_init_t ()
+{
+    if (engine)
+        delete engine;
+}
+
+bool zmq::zmq_init_t::read (::zmq_msg *msg_)
+{
+    //  On the listening side, no initialisation data are sent to the peer.
+    if (!connected)
+        return false;
+
+    //  Send identity.
+    int rc = zmq_msg_init_size (msg_, options.identity.size ());
+    zmq_assert (rc == 0);
+    memcpy (zmq_msg_data (msg_), options.identity.c_str (),
+        options.identity.size ());
+
+    //  Initialisation is done.
+    create_session ();
+
+    return true;
+}
+
+bool zmq::zmq_init_t::write (::zmq_msg *msg_)
+{
+    //  On the connecting side no initialisation data are expected.
+    if (connected)
+        return false;
+
+    //  Retreieve the identity.
+    options.identity = std::string ((const char*) zmq_msg_data (msg_),
+        zmq_msg_size (msg_));
+
+    //  Initialisation is done.
+    create_session ();
+
+    return true;
+}
+
+void zmq::zmq_init_t::flush ()
+{
+    //  No need to do anything. zmq_init_t does no batching of messages.
+    //  Each message is processed immediately on write.
+}
+
+void zmq::zmq_init_t::process_plug ()
+{
+    engine->plug (this);
+    owned_t::process_plug ();
+}
+
+void zmq::zmq_init_t::process_unplug ()
+{
+    engine->unplug ();
+}
+
+void zmq::zmq_init_t::create_session ()
+{
+    //  Disconnect engine from the init object.
+    engine->unplug ();
+
+    //  Create the session instance.
+    io_thread_t *io_thread = choose_io_thread (options.affinity);
+    session_t *session = new session_t (io_thread, owner, engine);
+    zmq_assert (session);
+    engine = NULL;
+
+    //  Pass session/engine pair to a chosen I/O thread.
+    send_plug (session);
+    send_own (owner, session);
+
+    //  Destroy the init object.
+    term ();
+}