ceph/src/boost/libs/asio/include/boost/asio/detail/null_tss_ptr.hpp

   1 //
   2 // detail/null_tss_ptr.hpp
   3 // ~~~~~~~~~~~~~~~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com)
   6 //
   7 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   9 //
  10
  11 #ifndef BOOST_ASIO_DETAIL_NULL_TSS_PTR_HPP
  12 #define BOOST_ASIO_DETAIL_NULL_TSS_PTR_HPP
  13
  14 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  15 # pragma once
  16 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
  17
  18 #include <boost/asio/detail/config.hpp>
  19
  20 #if !defined(BOOST_ASIO_HAS_THREADS)
  21
  22 #include <boost/asio/detail/noncopyable.hpp>
  23
  24 #include <boost/asio/detail/push_options.hpp>
  25
  26 namespace boost {
  27 namespace asio {
  28 namespace detail {
  29
  30 template <typename T>
  31 class null_tss_ptr
  32   : private noncopyable
  33 {
  34 public:
  35   // Constructor.
  36   null_tss_ptr()
  37     : value_(0)
  38   {
  39   }
  40
  41   // Destructor.
  42   ~null_tss_ptr()
  43   {
  44   }
  45
  46   // Get the value.
  47   operator T*() const
  48   {
  49     return value_;
  50   }
  51
  52   // Set the value.
  53   void operator=(T* value)
  54   {
  55     value_ = value;
  56   }
  57
  58 private:
  59   T* value_;
  60 };
  61
  62 } // namespace detail
  63 } // namespace asio
  64 } // namespace boost
  65
  66 #include <boost/asio/detail/pop_options.hpp>
  67
  68 #endif // !defined(BOOST_ASIO_HAS_THREADS)
  69
  70 #endif // BOOST_ASIO_DETAIL_NULL_TSS_PTR_HPP