1 // 2 // detail/timer_queue_base.hpp 3 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~ 4 // 5 // Copyright (c) 2003-2019 Christopher M. Kohlhoff (chris at kohlhoff dot com) 6 // 7 // Distributed under the Boost Software License, Version 1.0. (See accompanying 8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 9 // 10 11 #ifndef BOOST_ASIO_DETAIL_TIMER_QUEUE_BASE_HPP 12 #define BOOST_ASIO_DETAIL_TIMER_QUEUE_BASE_HPP 13 14 #if defined(_MSC_VER) && (_MSC_VER >= 1200) 15 # pragma once 16 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) 17 18 #include <boost/asio/detail/config.hpp> 19 #include <boost/asio/detail/noncopyable.hpp> 20 #include <boost/asio/detail/op_queue.hpp> 21 #include <boost/asio/detail/operation.hpp> 22 23 #include <boost/asio/detail/push_options.hpp> 24 25 namespace boost { 26 namespace asio { 27 namespace detail { 28 29 class timer_queue_base 30 : private noncopyable 31 { 32 public: 33 // Constructor. timer_queue_base()34 timer_queue_base() : next_(0) {} 35 36 // Destructor. ~timer_queue_base()37 virtual ~timer_queue_base() {} 38 39 // Whether there are no timers in the queue. 40 virtual bool empty() const = 0; 41 42 // Get the time to wait until the next timer. 43 virtual long wait_duration_msec(long max_duration) const = 0; 44 45 // Get the time to wait until the next timer. 46 virtual long wait_duration_usec(long max_duration) const = 0; 47 48 // Dequeue all ready timers. 49 virtual void get_ready_timers(op_queue<operation>& ops) = 0; 50 51 // Dequeue all timers. 52 virtual void get_all_timers(op_queue<operation>& ops) = 0; 53 54 private: 55 friend class timer_queue_set; 56 57 // Next timer queue in the set. 58 timer_queue_base* next_; 59 }; 60 61 template <typename Time_Traits> 62 class timer_queue; 63 64 } // namespace detail 65 } // namespace asio 66 } // namespace boost 67 68 #include <boost/asio/detail/pop_options.hpp> 69 70 #endif // BOOST_ASIO_DETAIL_TIMER_QUEUE_BASE_HPP 71