From 4ed70a930202b103e7e80b8dc925e0aaa4622595 Mon Sep 17 00:00:00 2001 From: Martin Sustrik Date: Wed, 29 Jul 2009 12:07:54 +0200 Subject: initial commit --- src/fair_aggregator.hpp | 77 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 src/fair_aggregator.hpp (limited to 'src/fair_aggregator.hpp') diff --git a/src/fair_aggregator.hpp b/src/fair_aggregator.hpp new file mode 100644 index 0000000..9e6c3bb --- /dev/null +++ b/src/fair_aggregator.hpp @@ -0,0 +1,77 @@ +/* + 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 . +*/ + +#ifndef __ZS_FAIR_AGGREGATOR_HPP_INCLUDED__ +#define __ZS_FAIR_AGGREGATOR_HPP_INCLUDED__ + +#include + +#include "i_mux.hpp" + +namespace zs +{ + + // Object to aggregate messages from inbound pipes. + + class fair_aggregator_t : public i_mux + { + public: + + fair_aggregator_t (); + + // i_mux interface implementation. + void set_session (session_t *session_); + void shutdown (); + void terminate (); + void attach_pipe (class pipe_reader_t *pipe_); + void detach_pipe (class pipe_reader_t *pipe_); + bool empty (); + void deactivate (class pipe_reader_t *pipe_); + void reactivate (class pipe_reader_t *pipe_); + bool recv (struct zs_msg *msg_); + + + private: + + // Clean-up. + ~fair_aggregator_t (); + + // Reference to the owner session object. + class session_t *session; + + // The list of inbound pipes. The active pipes are occupying indices + // from 0 to active-1. Suspended pipes occupy indices from 'active' + // to the end of the array. + typedef std::vector pipes_t; + pipes_t pipes; + + // The number of active pipes. + pipes_t::size_type active; + + // Pipe to retrieve next message from. The messages are retrieved + // from the pipes in round-robin fashion (a.k.a. fair queueing). + pipes_t::size_type current; + + fair_aggregator_t (const fair_aggregator_t&); + void operator = (const fair_aggregator_t&); + }; + +} + +#endif -- cgit v1.2.3