detail/impl/win_event.ipp

0001 //
0002 // detail/win_event.ipp
0003 // ~~~~~~~~~~~~~~~~~~~~
0004 //
0005 // Copyright (c) 2003-2023 Christopher M. Kohlhoff (chris at kohlhoff dot com)
0006 //
0007 // Distributed under the Boost Software License, Version 1.0. (See accompanying
0008 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0009 //
0010
0011 #ifndef BOOST_ASIO_DETAIL_IMPL_WIN_EVENT_IPP
0012 #define BOOST_ASIO_DETAIL_IMPL_WIN_EVENT_IPP
0013
0014 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
0015 # pragma once
0016 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
0017
0018 #include <boost/asio/detail/config.hpp>
0019
0020 #if defined(BOOST_ASIO_WINDOWS)
0021
0022 #include <boost/asio/detail/throw_error.hpp>
0023 #include <boost/asio/detail/win_event.hpp>
0024 #include <boost/asio/error.hpp>
0025
0026 #include <boost/asio/detail/push_options.hpp>
0027
0028 namespace boost {
0029 namespace asio {
0030 namespace detail {
0031
0032 win_event::win_event()
0033   : state_(0)
0034 {
0035 #if defined(BOOST_ASIO_WINDOWS_APP)
0036   events_[0] = ::CreateEventExW(0, 0,
0037       CREATE_EVENT_MANUAL_RESET, EVENT_ALL_ACCESS);
0038 #else // defined(BOOST_ASIO_WINDOWS_APP)
0039   events_[0] = ::CreateEventW(0, true, false, 0);
0040 #endif // defined(BOOST_ASIO_WINDOWS_APP)
0041   if (!events_[0])
0042   {
0043     DWORD last_error = ::GetLastError();
0044     boost::system::error_code ec(last_error,
0045         boost::asio::error::get_system_category());
0046     boost::asio::detail::throw_error(ec, "event");
0047   }
0048
0049 #if defined(BOOST_ASIO_WINDOWS_APP)
0050   events_[1] = ::CreateEventExW(0, 0, 0, EVENT_ALL_ACCESS);
0051 #else // defined(BOOST_ASIO_WINDOWS_APP)
0052   events_[1] = ::CreateEventW(0, false, false, 0);
0053 #endif // defined(BOOST_ASIO_WINDOWS_APP)
0054   if (!events_[1])
0055   {
0056     DWORD last_error = ::GetLastError();
0057     ::CloseHandle(events_[0]);
0058     boost::system::error_code ec(last_error,
0059         boost::asio::error::get_system_category());
0060     boost::asio::detail::throw_error(ec, "event");
0061   }
0062 }
0063
0064 win_event::~win_event()
0065 {
0066   ::CloseHandle(events_[0]);
0067   ::CloseHandle(events_[1]);
0068 }
0069
0070 } // namespace detail
0071 } // namespace asio
0072 } // namespace boost
0073
0074 #include <boost/asio/detail/pop_options.hpp>
0075
0076 #endif // defined(BOOST_ASIO_WINDOWS)
0077
0078 #endif // BOOST_ASIO_DETAIL_IMPL_WIN_EVENT_IPP