ceph/src/boost/libs/smart_ptr/include/boost/smart_ptr/detail/atomic_count_solaris.hpp

   1 #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SOLARIS_HPP_INCLUDED
   2 #define BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SOLARIS_HPP_INCLUDED
   3
   4 //
   5 //  boost/detail/atomic_count_solaris.hpp
   6 //   based on: boost/detail/atomic_count_win32.hpp
   7 //
   8 //  Copyright (c) 2001-2005 Peter Dimov
   9 //  Copyright (c) 2006 Michael van der Westhuizen
  10 //
  11 // Distributed under the Boost Software License, Version 1.0. (See
  12 // accompanying file LICENSE_1_0.txt or copy at
  13 // http://www.boost.org/LICENSE_1_0.txt)
  14 //
  15
  16 #include <atomic.h>
  17
  18 namespace boost
  19 {
  20
  21 namespace detail
  22 {
  23
  24 class atomic_count
  25 {
  26 public:
  27
  28     explicit atomic_count( uint32_t v ): value_( v )
  29     {
  30     }
  31
  32     long operator++()
  33     {
  34         return atomic_inc_32_nv( &value_ );
  35     }
  36
  37     long operator--()
  38     {
  39         return atomic_dec_32_nv( &value_ );
  40     }
  41
  42     operator uint32_t() const
  43     {
  44         return static_cast<uint32_t const volatile &>( value_ );
  45     }
  46
  47 private:
  48
  49     atomic_count( atomic_count const & );
  50     atomic_count & operator=( atomic_count const & );
  51
  52     uint32_t value_;
  53 };
  54
  55 } // namespace detail
  56
  57 } // namespace boost
  58
  59 #endif // #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SOLARIS_HPP_INCLUDED