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File indexing completed on 2025-01-18 09:28:42

0001 //
0002 // detail/null_tss_ptr.hpp
0003 // ~~~~~~~~~~~~~~~~~~~~~~~
0004 //
0005 // Copyright (c) 2003-2023 Christopher M. Kohlhoff (chris at kohlhoff dot com)
0006 //
0007 // Distributed under the Boost Software License, Version 1.0. (See accompanying
0008 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0009 //
0010 
0011 #ifndef BOOST_ASIO_DETAIL_NULL_TSS_PTR_HPP
0012 #define BOOST_ASIO_DETAIL_NULL_TSS_PTR_HPP
0013 
0014 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
0015 # pragma once
0016 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
0017 
0018 #include <boost/asio/detail/config.hpp>
0019 
0020 #if !defined(BOOST_ASIO_HAS_THREADS)
0021 
0022 #include <boost/asio/detail/noncopyable.hpp>
0023 
0024 #include <boost/asio/detail/push_options.hpp>
0025 
0026 namespace boost {
0027 namespace asio {
0028 namespace detail {
0029 
0030 template <typename T>
0031 class null_tss_ptr
0032   : private noncopyable
0033 {
0034 public:
0035   // Constructor.
0036   null_tss_ptr()
0037     : value_(0)
0038   {
0039   }
0040 
0041   // Destructor.
0042   ~null_tss_ptr()
0043   {
0044   }
0045 
0046   // Get the value.
0047   operator T*() const
0048   {
0049     return value_;
0050   }
0051 
0052   // Set the value.
0053   void operator=(T* value)
0054   {
0055     value_ = value;
0056   }
0057 
0058 private:
0059   T* value_;
0060 };
0061 
0062 } // namespace detail
0063 } // namespace asio
0064 } // namespace boost
0065 
0066 #include <boost/asio/detail/pop_options.hpp>
0067 
0068 #endif // !defined(BOOST_ASIO_HAS_THREADS)
0069 
0070 #endif // BOOST_ASIO_DETAIL_NULL_TSS_PTR_HPP