From e95946831f8ef53d29590735a2df661385edb008 Mon Sep 17 00:00:00 2001
From: "Matthias P. Braendli" <matthias.braendli@mpb.li>
Date: Mon, 6 Aug 2018 10:35:22 +0200
Subject: Replace boost by the standalone asio library

---
 lib/asio/detail/winrt_timer_scheduler.hpp | 137 ++++++++++++++++++++++++++++++
 1 file changed, 137 insertions(+)
 create mode 100644 lib/asio/detail/winrt_timer_scheduler.hpp

(limited to 'lib/asio/detail/winrt_timer_scheduler.hpp')

diff --git a/lib/asio/detail/winrt_timer_scheduler.hpp b/lib/asio/detail/winrt_timer_scheduler.hpp
new file mode 100644
index 0000000..5dec7c0
--- /dev/null
+++ b/lib/asio/detail/winrt_timer_scheduler.hpp
@@ -0,0 +1,137 @@
+//
+// 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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