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Diffstat (limited to 'external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/poller_base.hpp')
-rw-r--r-- | external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/poller_base.hpp | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/poller_base.hpp b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/poller_base.hpp new file mode 100644 index 00000000..41720e38 --- /dev/null +++ b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/poller_base.hpp @@ -0,0 +1,95 @@ +/* + Copyright (c) 2007-2015 Contributors as noted in the AUTHORS file + + This file is part of libzmq, the ZeroMQ core engine in C++. + + libzmq is free software; you can redistribute it and/or modify it under + the terms of the GNU Lesser General Public License (LGPL) as published + by the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + As a special exception, the Contributors give you permission to link + this library with independent modules to produce an executable, + regardless of the license terms of these independent modules, and to + copy and distribute the resulting executable under terms of your choice, + provided that you also meet, for each linked independent module, the + terms and conditions of the license of that module. An independent + module is a module which is not derived from or based on this library. + If you modify this library, you must extend this exception to your + version of the library. + + libzmq 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_POLLER_BASE_HPP_INCLUDED__ +#define __ZMQ_POLLER_BASE_HPP_INCLUDED__ + +#include <map> + +#include "clock.hpp" +#include "atomic_counter.hpp" + +namespace zmq +{ + + struct i_poll_events; + + 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_, zmq::i_poll_events *sink_, int id_); + + // Cancel the timer created by sink_ object with ID equal to id_. + void cancel_timer (zmq::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 + { + zmq::i_poll_events *sink; + int id; + }; + typedef std::multimap <uint64_t, timer_info_t> 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 |