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/*
Copyright (c) 2007-2011 iMatix Corporation
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_DIST_HPP_INCLUDED__
#define __ZMQ_DIST_HPP_INCLUDED__
#include <vector>
#include "array.hpp"
#include "pipe.hpp"
namespace zmq
{
// Class manages a set of outbound pipes. It sends each messages to
// each of them.
class dist_t : public i_writer_events
{
public:
dist_t (class own_t *sink_);
~dist_t ();
void attach (writer_t *pipe_);
void terminate ();
int send (zmq_msg_t *msg_, int flags_);
bool has_out ();
// i_writer_events interface implementation.
void activated (writer_t *pipe_);
void terminated (writer_t *pipe_);
private:
// Write the message to the pipe. Make the pipe inactive if writing
// fails. In such a case false is returned.
bool write (class writer_t *pipe_, zmq_msg_t *msg_);
// Put the message to all active pipes.
void distribute (zmq_msg_t *msg_, int flags_);
// List of outbound pipes.
typedef array_t <class writer_t> pipes_t;
pipes_t pipes;
// Number of active pipes. All the active pipes are located at the
// beginning of the pipes array. These are the pipes the messages
// can be sent to at the moment.
pipes_t::size_type active;
// Number of pipes eligible for sending messages to. This includes all
// the active pipes plus all the pipes that we can in theory send
// messages to (the HWM is not yet reached), but sending a message
// to them would result in partial message being delivered, ie. message
// with initial parts missing.
pipes_t::size_type eligible;
// True if last we are in the middle of a multipart message.
bool more;
// Object to send events to.
class own_t *sink;
// If true, termination process is already underway.
bool terminating;
dist_t (const dist_t&);
const dist_t &operator = (const dist_t&);
};
}
#endif
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