1//
2// detail/event.hpp
3// ~~~~~~~~~~~~~~~~
4//
5// Copyright (c) 2003-2024 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_EVENT_HPP
12#define BOOST_ASIO_DETAIL_EVENT_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_THREADS)
21# include <boost/asio/detail/null_event.hpp>
22#elif defined(BOOST_ASIO_WINDOWS)
23# include <boost/asio/detail/win_event.hpp>
24#elif defined(BOOST_ASIO_HAS_PTHREADS)
25# include <boost/asio/detail/posix_event.hpp>
26#else
27# include <boost/asio/detail/std_event.hpp>
28#endif
29
30namespace boost {
31namespace asio {
32namespace detail {
33
34#if !defined(BOOST_ASIO_HAS_THREADS)
35typedef null_event event;
36#elif defined(BOOST_ASIO_WINDOWS)
37typedef win_event event;
38#elif defined(BOOST_ASIO_HAS_PTHREADS)
39typedef posix_event event;
40#else
41typedef std_event event;
42#endif
43
44} // namespace detail
45} // namespace asio
46} // namespace boost
47
48#endif // BOOST_ASIO_DETAIL_EVENT_HPP
49

source code of boost/libs/asio/include/boost/asio/detail/event.hpp