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//
// detail/winrt_timer_scheduler.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_WINRT_TIMER_SCHEDULER_HPP
#define ASIO_DETAIL_WINRT_TIMER_SCHEDULER_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_WINDOWS_RUNTIME)
#include <cstddef>
#include "asio/detail/event.hpp"
#include "asio/detail/limits.hpp"
#include "asio/detail/mutex.hpp"
#include "asio/detail/op_queue.hpp"
#include "asio/detail/thread.hpp"
#include "asio/detail/timer_queue_base.hpp"
#include "asio/detail/timer_queue_set.hpp"
#include "asio/detail/wait_op.hpp"
#include "asio/io_context.hpp"
#if defined(ASIO_HAS_IOCP)
# include "asio/detail/thread.hpp"
#endif // defined(ASIO_HAS_IOCP)
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
class winrt_timer_scheduler
: public asio::detail::service_base<winrt_timer_scheduler>
{
public:
// Constructor.
ASIO_DECL winrt_timer_scheduler(asio::io_context& io_context);
// Destructor.
ASIO_DECL ~winrt_timer_scheduler();
// Destroy all user-defined handler objects owned by the service.
ASIO_DECL void shutdown();
// Recreate internal descriptors following a fork.
ASIO_DECL void notify_fork(
asio::io_context::fork_event fork_ev);
// Initialise the task. No effect as this class uses its own thread.
ASIO_DECL void init_task();
// Add a new timer queue to the reactor.
template <typename Time_Traits>
void add_timer_queue(timer_queue<Time_Traits>& queue);
// Remove a timer queue from the reactor.
template <typename Time_Traits>
void remove_timer_queue(timer_queue<Time_Traits>& queue);
// Schedule a new operation in the given timer queue to expire at the
// specified absolute time.
template <typename Time_Traits>
void schedule_timer(timer_queue<Time_Traits>& queue,
const typename Time_Traits::time_type& time,
typename timer_queue<Time_Traits>::per_timer_data& timer, wait_op* op);
// Cancel the timer operations associated with the given token. Returns the
// number of operations that have been posted or dispatched.
template <typename Time_Traits>
std::size_t cancel_timer(timer_queue<Time_Traits>& queue,
typename timer_queue<Time_Traits>::per_timer_data& timer,
std::size_t max_cancelled = (std::numeric_limits<std::size_t>::max)());
// Move the timer operations associated with the given timer.
template <typename Time_Traits>
void move_timer(timer_queue<Time_Traits>& queue,
typename timer_queue<Time_Traits>::per_timer_data& to,
typename timer_queue<Time_Traits>::per_timer_data& from);
private:
// Run the select loop in the thread.
ASIO_DECL void run_thread();
// Entry point for the select loop thread.
ASIO_DECL static void call_run_thread(winrt_timer_scheduler* reactor);
// Helper function to add a new timer queue.
ASIO_DECL void do_add_timer_queue(timer_queue_base& queue);
// Helper function to remove a timer queue.
ASIO_DECL void do_remove_timer_queue(timer_queue_base& queue);
// The io_context implementation used to post completions.
io_context_impl& io_context_;
// Mutex used to protect internal variables.
asio::detail::mutex mutex_;
// Event used to wake up background thread.
asio::detail::event event_;
// The timer queues.
timer_queue_set timer_queues_;
// The background thread that is waiting for timers to expire.
asio::detail::thread* thread_;
// Does the background thread need to stop.
bool stop_thread_;
// Whether the service has been shut down.
bool shutdown_;
};
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#include "asio/detail/impl/winrt_timer_scheduler.hpp"
#if defined(ASIO_HEADER_ONLY)
# include "asio/detail/impl/winrt_timer_scheduler.ipp"
#endif // defined(ASIO_HEADER_ONLY)
#endif // defined(ASIO_WINDOWS_RUNTIME)
#endif // ASIO_DETAIL_WINRT_TIMER_SCHEDULER_HPP
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