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/*
Copyright (c) 2009-2012 250bpm s.r.o.
Copyright (c) 2007-2011 Other contributors as noted in the AUTHORS file
This file is part of 0MQ.
0MQ is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser 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
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __ZMQ_XREQ_HPP_INCLUDED__
#define __ZMQ_XREQ_HPP_INCLUDED__
#include "socket_base.hpp"
#include "session_base.hpp"
#include "fq.hpp"
#include "lb.hpp"
namespace zmq
{
class ctx_t;
class msg_t;
class pipe_t;
class io_thread_t;
class socket_base_t;
class xreq_t :
public socket_base_t
{
public:
xreq_t (zmq::ctx_t *parent_, uint32_t tid_, int sid_);
~xreq_t ();
protected:
// Overloads of functions from socket_base_t.
void xattach_pipe (zmq::pipe_t *pipe_);
int xsend (zmq::msg_t *msg_, int flags_);
int xrecv (zmq::msg_t *msg_, int flags_);
bool xhas_in ();
bool xhas_out ();
void xread_activated (zmq::pipe_t *pipe_);
void xwrite_activated (zmq::pipe_t *pipe_);
void xterminated (zmq::pipe_t *pipe_);
private:
// Messages are fair-queued from inbound pipes. And load-balanced to
// the outbound pipes.
fq_t fq;
lb_t lb;
// Have we prefetched a message.
bool prefetched;
// Holds the prefetched message.
msg_t prefetched_msg;
xreq_t (const xreq_t&);
const xreq_t &operator = (const xreq_t&);
};
class xreq_session_t : public session_base_t
{
public:
xreq_session_t (zmq::io_thread_t *io_thread_, bool connect_,
zmq::socket_base_t *socket_, const options_t &options_,
const char *protocol_, const char *address_);
~xreq_session_t ();
private:
xreq_session_t (const xreq_session_t&);
const xreq_session_t &operator = (const xreq_session_t&);
};
}
#endif
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