Server : Apache/2.4.41 (Ubuntu) System : Linux absol.cf 5.4.0-198-generic #218-Ubuntu SMP Fri Sep 27 20:18:53 UTC 2024 x86_64 User : www-data ( 33) PHP Version : 7.4.33 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, Directory :  /usr/include/asio/detail/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

//
// detail/win_fenced_block.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 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_WIN_FENCED_BLOCK_HPP
#define ASIO_DETAIL_WIN_FENCED_BLOCK_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_WINDOWS) && !defined(UNDER_CE)

#include "asio/detail/socket_types.hpp"
#include "asio/detail/noncopyable.hpp"

#include "asio/detail/push_options.hpp"

namespace asio {
namespace detail {

class win_fenced_block
  : private noncopyable
{
public:
  enum half_t { half };
  enum full_t { full };

  // Constructor for a half fenced block.
  explicit win_fenced_block(half_t)
  {
  }

  // Constructor for a full fenced block.
  explicit win_fenced_block(full_t)
  {
#if defined(__BORLANDC__)
    LONG barrier = 0;
    ::InterlockedExchange(&barrier, 1);
#elif defined(ASIO_MSVC) \
  && ((ASIO_MSVC < 1400) || !defined(MemoryBarrier))
# if defined(_M_IX86)
#  pragma warning(push)
#  pragma warning(disable:4793)
    LONG barrier;
    __asm { xchg barrier, eax }
#  pragma warning(pop)
# endif // defined(_M_IX86)
#else
    MemoryBarrier();
#endif
  }

  // Destructor.
  ~win_fenced_block()
  {
#if defined(__BORLANDC__)
    LONG barrier = 0;
    ::InterlockedExchange(&barrier, 1);
#elif defined(ASIO_MSVC) \
  && ((ASIO_MSVC < 1400) || !defined(MemoryBarrier))
# if defined(_M_IX86)
#  pragma warning(push)
#  pragma warning(disable:4793)
    LONG barrier;
    __asm { xchg barrier, eax }
#  pragma warning(pop)
# endif // defined(_M_IX86)
#else
    MemoryBarrier();
#endif
  }
};

} // namespace detail
} // namespace asio

#include "asio/detail/pop_options.hpp"

#endif // defined(ASIO_WINDOWS) && !defined(UNDER_CE)

#endif // ASIO_DETAIL_WIN_FENCED_BLOCK_HPP