| // |
| // detail/win_tss_ptr.hpp |
| // ~~~~~~~~~~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2010 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 BOOST_ASIO_DETAIL_WIN_TSS_PTR_HPP |
| #define BOOST_ASIO_DETAIL_WIN_TSS_PTR_HPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
| # pragma once |
| #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) |
| |
| #include <boost/asio/detail/config.hpp> |
| |
| #if defined(BOOST_WINDOWS) |
| |
| #include <boost/asio/detail/noncopyable.hpp> |
| #include <boost/asio/detail/socket_types.hpp> |
| |
| #include <boost/asio/detail/push_options.hpp> |
| |
| namespace boost { |
| namespace asio { |
| namespace detail { |
| |
| // Helper function to create thread-specific storage. |
| BOOST_ASIO_DECL DWORD win_tss_ptr_create(); |
| |
| template <typename T> |
| class win_tss_ptr |
| : private noncopyable |
| { |
| public: |
| // Constructor. |
| win_tss_ptr() |
| : tss_key_(win_tss_ptr_create()) |
| { |
| } |
| |
| // Destructor. |
| ~win_tss_ptr() |
| { |
| ::TlsFree(tss_key_); |
| } |
| |
| // Get the value. |
| operator T*() const |
| { |
| return static_cast<T*>(::TlsGetValue(tss_key_)); |
| } |
| |
| // Set the value. |
| void operator=(T* value) |
| { |
| ::TlsSetValue(tss_key_, value); |
| } |
| |
| private: |
| // Thread-specific storage to allow unlocked access to determine whether a |
| // thread is a member of the pool. |
| DWORD tss_key_; |
| }; |
| |
| } // namespace detail |
| } // namespace asio |
| } // namespace boost |
| |
| #include <boost/asio/detail/pop_options.hpp> |
| |
| #if defined(BOOST_ASIO_HEADER_ONLY) |
| # include <boost/asio/detail/impl/win_tss_ptr.ipp> |
| #endif // defined(BOOST_ASIO_HEADER_ONLY) |
| |
| #endif // defined(BOOST_WINDOWS) |
| |
| #endif // BOOST_ASIO_DETAIL_WIN_TSS_PTR_HPP |