ceph/src/boost/boost/asio/detail/impl/win_iocp_io_context.hpp

   1 //
   2 // detail/impl/win_iocp_io_context.hpp
   3 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2017 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_WIN_IOCP_IO_CONTEXT_HPP
  12 #define BOOST_ASIO_DETAIL_IMPL_WIN_IOCP_IO_CONTEXT_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
  20 #if defined(BOOST_ASIO_HAS_IOCP)
  21
  22 #include <boost/asio/detail/completion_handler.hpp>
  23 #include <boost/asio/detail/fenced_block.hpp>
  24 #include <boost/asio/detail/handler_alloc_helpers.hpp>
  25 #include <boost/asio/detail/handler_invoke_helpers.hpp>
  26 #include <boost/asio/detail/memory.hpp>
  27
  28 #include <boost/asio/detail/push_options.hpp>
  29
  30 namespace boost {
  31 namespace asio {
  32 namespace detail {
  33
  34 template <typename Time_Traits>
  35 void win_iocp_io_context::add_timer_queue(
  36     timer_queue<Time_Traits>& queue)
  37 {
  38   do_add_timer_queue(queue);
  39 }
  40
  41 template <typename Time_Traits>
  42 void win_iocp_io_context::remove_timer_queue(
  43     timer_queue<Time_Traits>& queue)
  44 {
  45   do_remove_timer_queue(queue);
  46 }
  47
  48 template <typename Time_Traits>
  49 void win_iocp_io_context::schedule_timer(timer_queue<Time_Traits>& queue,
  50     const typename Time_Traits::time_type& time,
  51     typename timer_queue<Time_Traits>::per_timer_data& timer, wait_op* op)
  52 {
  53   // If the service has been shut down we silently discard the timer.
  54   if (::InterlockedExchangeAdd(&shutdown_, 0) != 0)
  55   {
  56     post_immediate_completion(op, false);
  57     return;
  58   }
  59
  60   mutex::scoped_lock lock(dispatch_mutex_);
  61
  62   bool earliest = queue.enqueue_timer(time, timer, op);
  63   work_started();
  64   if (earliest)
  65     update_timeout();
  66 }
  67
  68 template <typename Time_Traits>
  69 std::size_t win_iocp_io_context::cancel_timer(timer_queue<Time_Traits>& queue,
  70     typename timer_queue<Time_Traits>::per_timer_data& timer,
  71     std::size_t max_cancelled)
  72 {
  73   // If the service has been shut down we silently ignore the cancellation.
  74   if (::InterlockedExchangeAdd(&shutdown_, 0) != 0)
  75     return 0;
  76
  77   mutex::scoped_lock lock(dispatch_mutex_);
  78   op_queue<win_iocp_operation> ops;
  79   std::size_t n = queue.cancel_timer(timer, ops, max_cancelled);
  80   post_deferred_completions(ops);
  81   return n;
  82 }
  83
  84 template <typename Time_Traits>
  85 void win_iocp_io_context::move_timer(timer_queue<Time_Traits>& queue,
  86     typename timer_queue<Time_Traits>::per_timer_data& to,
  87     typename timer_queue<Time_Traits>::per_timer_data& from)
  88 {
  89   boost::asio::detail::mutex::scoped_lock lock(dispatch_mutex_);
  90   op_queue<operation> ops;
  91   queue.cancel_timer(to, ops);
  92   queue.move_timer(to, from);
  93   lock.unlock();
  94   post_deferred_completions(ops);
  95 }
  96
  97 } // namespace detail
  98 } // namespace asio
  99 } // namespace boost
 100
 101 #include <boost/asio/detail/pop_options.hpp>
 102
 103 #endif // defined(BOOST_ASIO_HAS_IOCP)
 104
 105 #endif // BOOST_ASIO_DETAIL_IMPL_WIN_IOCP_IO_CONTEXT_HPP