You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and dots ('.'), can be up to 35 characters long. Letters must be lowercase.
65 lines
1.6 KiB
65 lines
1.6 KiB
// |
|
// detail/gcc_sync_fenced_block.hpp |
|
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
|
// |
|
// Copyright (c) 2003-2011 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_GCC_SYNC_FENCED_BLOCK_HPP |
|
#define BOOST_ASIO_DETAIL_GCC_SYNC_FENCED_BLOCK_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(__GNUC__) \ |
|
&& ((__GNUC__ == 4 && __GNUC_MINOR__ >= 1) || (__GNUC__ > 4)) \ |
|
&& !defined(__INTEL_COMPILER) && !defined(__ICL) \ |
|
&& !defined(__ICC) && !defined(__ECC) && !defined(__PATHSCALE__) |
|
|
|
#include <boost/asio/detail/push_options.hpp> |
|
|
|
namespace boost { |
|
namespace asio { |
|
namespace detail { |
|
|
|
class gcc_sync_fenced_block |
|
: private noncopyable |
|
{ |
|
public: |
|
enum half_or_full_t { half, full }; |
|
|
|
// Constructor. |
|
explicit gcc_sync_fenced_block(half_or_full_t) |
|
: value_(0) |
|
{ |
|
__sync_lock_test_and_set(&value_, 1); |
|
} |
|
|
|
// Destructor. |
|
~gcc_sync_fenced_block() |
|
{ |
|
__sync_lock_release(&value_); |
|
} |
|
|
|
private: |
|
int value_; |
|
}; |
|
|
|
} // namespace detail |
|
} // namespace asio |
|
} // namespace boost |
|
|
|
#include <boost/asio/detail/pop_options.hpp> |
|
|
|
#endif // defined(__GNUC__) |
|
// && ((__GNUC__ == 4 && __GNUC_MINOR__ >= 1) || (__GNUC__ > 4)) |
|
// && !defined(__INTEL_COMPILER) && !defined(__ICL) |
|
// && !defined(__ICC) && !defined(__ECC) && !defined(__PATHSCALE__) |
|
|
|
#endif // BOOST_ASIO_DETAIL_GCC_SYNC_FENCED_BLOCK_HPP
|
|
|