ceph/src/boost/libs/asio/include/boost/asio/detail/impl/winrt_timer_scheduler.ipp

   1 //
   2 // detail/impl/winrt_timer_scheduler.ipp
   3 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2016 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_IMPL_WINRT_TIMER_SCHEDULER_IPP
  12 #define BOOST_ASIO_DETAIL_IMPL_WINRT_TIMER_SCHEDULER_IPP
  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
  20 #if defined(BOOST_ASIO_WINDOWS_RUNTIME)
  21
  22 #include <boost/asio/detail/bind_handler.hpp>
  23 #include <boost/asio/detail/winrt_timer_scheduler.hpp>
  24
  25 #include <boost/asio/detail/push_options.hpp>
  26
  27 namespace boost {
  28 namespace asio {
  29 namespace detail {
  30
  31 winrt_timer_scheduler::winrt_timer_scheduler(
  32     boost::asio::io_service& io_service)
  33   : boost::asio::detail::service_base<winrt_timer_scheduler>(io_service),
  34     io_service_(use_service<io_service_impl>(io_service)),
  35     mutex_(),
  36     event_(),
  37     timer_queues_(),
  38     thread_(0),
  39     stop_thread_(false),
  40     shutdown_(false)
  41 {
  42   thread_ = new boost::asio::detail::thread(
  43       bind_handler(&winrt_timer_scheduler::call_run_thread, this));
  44 }
  45
  46 winrt_timer_scheduler::~winrt_timer_scheduler()
  47 {
  48   shutdown_service();
  49 }
  50
  51 void winrt_timer_scheduler::shutdown_service()
  52 {
  53   boost::asio::detail::mutex::scoped_lock lock(mutex_);
  54   shutdown_ = true;
  55   stop_thread_ = true;
  56   event_.signal(lock);
  57   lock.unlock();
  58
  59   if (thread_)
  60   {
  61     thread_->join();
  62     delete thread_;
  63     thread_ = 0;
  64   }
  65
  66   op_queue<operation> ops;
  67   timer_queues_.get_all_timers(ops);
  68   io_service_.abandon_operations(ops);
  69 }
  70
  71 void winrt_timer_scheduler::fork_service(boost::asio::io_service::fork_event)
  72 {
  73 }
  74
  75 void winrt_timer_scheduler::init_task()
  76 {
  77 }
  78
  79 void winrt_timer_scheduler::run_thread()
  80 {
  81   boost::asio::detail::mutex::scoped_lock lock(mutex_);
  82   while (!stop_thread_)
  83   {
  84     const long max_wait_duration = 5 * 60 * 1000000;
  85     long wait_duration = timer_queues_.wait_duration_usec(max_wait_duration);
  86     event_.wait_for_usec(lock, wait_duration);
  87     event_.clear(lock);
  88     op_queue<operation> ops;
  89     timer_queues_.get_ready_timers(ops);
  90     if (!ops.empty())
  91     {
  92       lock.unlock();
  93       io_service_.post_deferred_completions(ops);
  94       lock.lock();
  95     }
  96   }
  97 }
  98
  99 void winrt_timer_scheduler::call_run_thread(winrt_timer_scheduler* scheduler)
 100 {
 101   scheduler->run_thread();
 102 }
 103
 104 void winrt_timer_scheduler::do_add_timer_queue(timer_queue_base& queue)
 105 {
 106   mutex::scoped_lock lock(mutex_);
 107   timer_queues_.insert(&queue);
 108 }
 109
 110 void winrt_timer_scheduler::do_remove_timer_queue(timer_queue_base& queue)
 111 {
 112   mutex::scoped_lock lock(mutex_);
 113   timer_queues_.erase(&queue);
 114 }
 115
 116 } // namespace detail
 117 } // namespace asio
 118 } // namespace boost
 119
 120 #include <boost/asio/detail/pop_options.hpp>
 121
 122 #endif // defined(BOOST_ASIO_WINDOWS_RUNTIME)
 123
 124 #endif // BOOST_ASIO_DETAIL_IMPL_WINRT_TIMER_SCHEDULER_IPP