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-/*
- 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_SESSION_HPP_INCLUDED__
-#define __ZMQ_SESSION_HPP_INCLUDED__
-
-#include "i_session.hpp"
-#include "safe_object.hpp"
-#include "stdint.hpp"
-#include "atomic_counter.hpp"
-
-namespace zmq
-{
-
- // Object that encapsulates both mux and demux.
-
- class session_t : public safe_object_t, public i_session
- {
- public:
-
- // Creates the session object.
- session_t (struct object_t *parent_, struct i_thread *thread_,
- struct i_mux *mux_, struct i_demux *demux_,
- bool terminate_on_disconnect_, bool terminate_on_no_pipes_);
-
- // i_session implementation
- void set_engine (struct i_engine *engine_);
- void shutdown ();
- bool read (struct zmq_msg *msg_);
- bool write (struct zmq_msg *msg_);
- void flush ();
-
- // Called by the engine when it is being closed.
- void disconnected ();
-
- // Creates a message flow between this session and the peer session.
- // If in_ is true, the messages can flow from the peer to ourselves.
- // If out_ is true, messages can flow from ourselves to the peer.
- // It's assumed that peer's seqnum was already incremented.
- void bind (class object_t *peer_, bool in_, bool out_);
-
- // Called by mux if new messages are available.
- void revive ();
-
- // Functions to set & retrieve index of this MD in thread's array
- // of session objects.
- void set_index (int index_);
- int get_index ();
-
- private:
-
- // Clean-up.
- ~session_t ();
-
- // Terminate is private here. It is called by either when disconnected
- // or no_pipes event occurs.
- void terminate ();
-
- void process_bind (class pipe_reader_t *reader_,
- class session_t *peer_);
- void process_reg (class simple_semaphore_t *smph_);
- void process_reg_and_bind (class session_t *peer_,
- bool flow_in_, bool flow_out_);
- void process_engine (i_engine *engine_);
-
- struct i_mux *mux;
- struct i_demux *demux;
-
- struct i_thread *thread;
- struct i_engine *engine;
-
- // If true termination of the session can be triggered by engine
- // disconnect/close.
- bool terminate_on_disconnect;
-
- // If true termination of the session can be triggered when the last
- // pipe detaches from it.
- bool terminate_on_no_pipes;
-
- // If true, terminate_on_no_pipes should be set when at least one
- // pipe was bound.
- bool terminate_on_no_pipes_delayed;
-
- // Index in thread's session array.
- int index;
- };
-
-}
-
-#endif
-