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- //
- // detail/global.hpp
- // ~~~~~~~~~~~~~~~~~
- //
- // Copyright (c) 2003-2015 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_GLOBAL_HPP
- #define ASIO_DETAIL_GLOBAL_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_HAS_THREADS)
- # include "asio/detail/null_global.hpp"
- #elif defined(ASIO_WINDOWS)
- # include "asio/detail/win_global.hpp"
- #elif defined(ASIO_HAS_PTHREADS)
- # include "asio/detail/posix_global.hpp"
- #elif defined(ASIO_HAS_STD_CALL_ONCE)
- # include "asio/detail/std_global.hpp"
- #else
- # error Only Windows, POSIX and std::call_once are supported!
- #endif
-
- namespace asio {
- namespace detail {
-
- template <typename T>
- inline T& global()
- {
- #if !defined(ASIO_HAS_THREADS)
- return null_global<T>();
- #elif defined(ASIO_WINDOWS)
- return win_global<T>();
- #elif defined(ASIO_HAS_PTHREADS)
- return posix_global<T>();
- #elif defined(ASIO_HAS_STD_CALL_ONCE)
- return std_global<T>();
- #endif
- }
-
- } // namespace detail
- } // namespace asio
-
- #endif // ASIO_DETAIL_GLOBAL_HPP
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