ceph/src/boost/libs/atomic/include/boost/atomic/detail/lockpool.hpp

   1 /*
   2  * Distributed under the Boost Software License, Version 1.0.
   3  * (See accompanying file LICENSE_1_0.txt or copy at
   4  * http://www.boost.org/LICENSE_1_0.txt)
   5  *
   6  * Copyright (c) 2011 Helge Bahmann
   7  * Copyright (c) 2013-2014 Andrey Semashev
   8  */
   9 /*!
  10  * \file   atomic/detail/lockpool.hpp
  11  *
  12  * This header contains declaration of the lockpool used to emulate atomic ops.
  13  */
  14
  15 #ifndef BOOST_ATOMIC_DETAIL_LOCKPOOL_HPP_INCLUDED_
  16 #define BOOST_ATOMIC_DETAIL_LOCKPOOL_HPP_INCLUDED_
  17
  18 #include <boost/atomic/detail/config.hpp>
  19 #include <boost/atomic/detail/link.hpp>
  20
  21 #ifdef BOOST_HAS_PRAGMA_ONCE
  22 #pragma once
  23 #endif
  24
  25 namespace boost {
  26 namespace atomics {
  27 namespace detail {
  28
  29 struct lockpool
  30 {
  31     class scoped_lock
  32     {
  33         void* m_lock;
  34
  35     public:
  36         explicit BOOST_ATOMIC_DECL scoped_lock(const volatile void* addr) BOOST_NOEXCEPT;
  37         BOOST_ATOMIC_DECL ~scoped_lock() BOOST_NOEXCEPT;
  38
  39         BOOST_DELETED_FUNCTION(scoped_lock(scoped_lock const&))
  40         BOOST_DELETED_FUNCTION(scoped_lock& operator=(scoped_lock const&))
  41     };
  42
  43     static BOOST_ATOMIC_DECL void thread_fence() BOOST_NOEXCEPT;
  44     static BOOST_ATOMIC_DECL void signal_fence() BOOST_NOEXCEPT;
  45 };
  46
  47 } // namespace detail
  48 } // namespace atomics
  49 } // namespace boost
  50
  51 #endif // BOOST_ATOMIC_DETAIL_LOCKPOOL_HPP_INCLUDED_