libzmq/src/pull.hpp

/*
    Copyright (c) 2007-2013 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_PULL_HPP_INCLUDED__
#define __ZMQ_PULL_HPP_INCLUDED__

#include "socket_base.hpp"
#include "session_base.hpp"
#include "fq.hpp"

namespace zmq
{

    class ctx_t;
    class pipe_t;
    class msg_t;
    class io_thread_t;

    class pull_t :
        public socket_base_t
    {
    public:

        pull_t (zmq::ctx_t *parent_, uint32_t tid_, int sid_);
        ~pull_t ();

    protected:

        //  Overloads of functions from socket_base_t.
        void xattach_pipe (zmq::pipe_t *pipe_, bool icanhasall_);
        int xrecv (zmq::msg_t *msg_);
        bool xhas_in ();
        void xread_activated (zmq::pipe_t *pipe_);
        void xterminated (zmq::pipe_t *pipe_);

    private:

        //  Fair queueing object for inbound pipes.
        fq_t fq;

        pull_t (const pull_t&);
        const pull_t &operator = (const pull_t&);

    };

    class pull_session_t : public session_base_t
    {
    public:

        pull_session_t (zmq::io_thread_t *io_thread_, bool connect_,
            socket_base_t *socket_, const options_t &options_,
            const address_t *addr_);
        ~pull_session_t ();

    private:

        pull_session_t (const pull_session_t&);
        const pull_session_t &operator = (const pull_session_t&);
    };

}

#endif