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/*
Copyright (c) 2007-2010 iMatix Corporation
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_FQ_HPP_INCLUDED__
#define __ZMQ_FQ_HPP_INCLUDED__
#include "yarray.hpp"
namespace zmq
{
// Class manages a set of inbound pipes. On receive it performs fair
// queueing (RFC970) so that senders gone berserk won't cause denial of
// service for decent senders.
class fq_t
{
public:
fq_t ();
~fq_t ();
void attach (class reader_t *pipe_);
void detach (class reader_t *pipe_);
void kill (class reader_t *pipe_);
void revive (class reader_t *pipe_);
int recv (zmq_msg_t *msg_, int flags_);
bool has_in ();
private:
// Inbound pipes.
typedef yarray_t <class reader_t> pipes_t;
pipes_t pipes;
// Number of active pipes. All the active pipes are located at the
// beginning of the pipes array.
pipes_t::size_type active;
// Index of the next bound pipe to read a message from.
pipes_t::size_type current;
// If true, part of a multipart message was already received, but
// there are following parts still waiting in the current pipe.
bool more;
fq_t (const fq_t&);
void operator = (const fq_t&);
};
}
#endif
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