From e645fc2693acc796304498909786b7b47005b429 Mon Sep 17 00:00:00 2001 From: Martin Lucina Date: Mon, 23 Jan 2012 08:53:35 +0100 Subject: Imported Upstream version 2.1.3 --- src/poller_base.hpp | 84 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 src/poller_base.hpp (limited to 'src/poller_base.hpp') diff --git a/src/poller_base.hpp b/src/poller_base.hpp new file mode 100644 index 0000000..44fe9f1 --- /dev/null +++ b/src/poller_base.hpp @@ -0,0 +1,84 @@ +/* + 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 . +*/ + +#ifndef __ZMQ_POLLER_BASE_HPP_INCLUDED__ +#define __ZMQ_POLLER_BASE_HPP_INCLUDED__ + +#include + +#include "clock.hpp" +#include "atomic_counter.hpp" + +namespace zmq +{ + + class poller_base_t + { + public: + + poller_base_t (); + virtual ~poller_base_t (); + + // Returns load of the poller. Note that this function can be + // invoked from a different thread! + int get_load (); + + // Add a timeout to expire in timeout_ milliseconds. After the + // expiration timer_event on sink_ object will be called with + // argument set to id_. + void add_timer (int timeout_, struct i_poll_events *sink_, int id_); + + // Cancel the timer created by sink_ object with ID equal to id_. + void cancel_timer (struct i_poll_events *sink_, int id_); + + protected: + + // Called by individual poller implementations to manage the load. + void adjust_load (int amount_); + + // Executes any timers that are due. Returns number of milliseconds + // to wait to match the next timer or 0 meaning "no timers". + uint64_t execute_timers (); + + private: + + // Clock instance private to this I/O thread. + clock_t clock; + + // List of active timers. + struct timer_info_t + { + struct i_poll_events *sink; + int id; + }; + typedef std::multimap timers_t; + timers_t timers; + + // Load of the poller. Currently the number of file descriptors + // registered. + atomic_counter_t load; + + poller_base_t (const poller_base_t&); + const poller_base_t &operator = (const poller_base_t&); + }; + +} + +#endif -- cgit v1.2.3