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89 lines
2.0 KiB
89 lines
2.0 KiB
// |
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// detail/win_fenced_block.hpp |
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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// |
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// Copyright (c) 2003-2011 Christopher M. Kohlhoff (chris at kohlhoff dot com) |
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// |
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// Distributed under the Boost Software License, Version 1.0. (See accompanying |
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
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// |
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#ifndef BOOST_ASIO_DETAIL_WIN_FENCED_BLOCK_HPP |
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#define BOOST_ASIO_DETAIL_WIN_FENCED_BLOCK_HPP |
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#if defined(_MSC_VER) && (_MSC_VER >= 1200) |
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# pragma once |
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#endif // defined(_MSC_VER) && (_MSC_VER >= 1200) |
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#include <boost/asio/detail/config.hpp> |
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#if defined(BOOST_WINDOWS) && !defined(UNDER_CE) |
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#include <boost/asio/detail/socket_types.hpp> |
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#include <boost/asio/detail/push_options.hpp> |
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namespace boost { |
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namespace asio { |
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namespace detail { |
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class win_fenced_block |
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: private noncopyable |
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{ |
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public: |
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enum half_t { half }; |
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enum full_t { full }; |
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// Constructor for a half fenced block. |
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explicit win_fenced_block(half_t) |
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{ |
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} |
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// Constructor for a full fenced block. |
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explicit win_fenced_block(full_t) |
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{ |
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#if defined(__BORLANDC__) |
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LONG barrier = 0; |
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::InterlockedExchange(&barrier, 1); |
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#elif defined(BOOST_MSVC) && ((BOOST_MSVC < 1400) || !defined(MemoryBarrier)) |
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# if defined(_M_IX86) |
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# pragma warning(push) |
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# pragma warning(disable:4793) |
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LONG barrier; |
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__asm { xchg barrier, eax } |
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# pragma warning(pop) |
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# endif // defined(_M_IX86) |
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#else |
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MemoryBarrier(); |
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#endif |
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} |
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// Destructor. |
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~win_fenced_block() |
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{ |
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#if defined(__BORLANDC__) |
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LONG barrier = 0; |
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::InterlockedExchange(&barrier, 1); |
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#elif defined(BOOST_MSVC) && ((BOOST_MSVC < 1400) || !defined(MemoryBarrier)) |
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# if defined(_M_IX86) |
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# pragma warning(push) |
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# pragma warning(disable:4793) |
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LONG barrier; |
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__asm { xchg barrier, eax } |
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# pragma warning(pop) |
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# endif // defined(_M_IX86) |
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#else |
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MemoryBarrier(); |
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#endif |
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} |
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}; |
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} // namespace detail |
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} // namespace asio |
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} // namespace boost |
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#include <boost/asio/detail/pop_options.hpp> |
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#endif // defined(BOOST_WINDOWS) && !defined(UNDER_CE) |
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#endif // BOOST_ASIO_DETAIL_WIN_FENCED_BLOCK_HPP
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