text: //
  // detail/tss_ptr.hpp
  // ~~~~~~~~~~~~~~~~~~
  //
  // Copyright (c) 2003-2013 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 BOOST_ASIO_DETAIL_TSS_PTR_HPP
  #define BOOST_ASIO_DETAIL_TSS_PTR_HPP
  
  #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  # pragma once
  #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
  
  #include <boost/asio/detail/config.hpp>
  
  #if !defined(BOOST_ASIO_HAS_THREADS)
  # include <boost/asio/detail/null_tss_ptr.hpp>
  #elif defined(BOOST_ASIO_HAS_THREAD_KEYWORD_EXTENSION)
  # include <boost/asio/detail/keyword_tss_ptr.hpp>
  #elif defined(BOOST_ASIO_WINDOWS)
  # include <boost/asio/detail/win_tss_ptr.hpp>
  #elif defined(BOOST_ASIO_HAS_PTHREADS)
  # include <boost/asio/detail/posix_tss_ptr.hpp>
  #else
  # error Only Windows and POSIX are supported!
  #endif
  
  #include <boost/asio/detail/push_options.hpp>
  
  namespace boost {
  namespace asio {
  namespace detail {
  
  template <typename T>
  class tss_ptr
  #if !defined(BOOST_ASIO_HAS_THREADS)
    : public null_tss_ptr<T>
  #elif defined(BOOST_ASIO_HAS_THREAD_KEYWORD_EXTENSION)
    : public keyword_tss_ptr<T>
  #elif defined(BOOST_ASIO_WINDOWS)
    : public win_tss_ptr<T>
  #elif defined(BOOST_ASIO_HAS_PTHREADS)
    : public posix_tss_ptr<T>
  #endif
  {
  public:
    void operator=(T* value)
    {
  #if !defined(BOOST_ASIO_HAS_THREADS)
      null_tss_ptr<T>::operator=(value);
  #elif defined(BOOST_ASIO_HAS_THREAD_KEYWORD_EXTENSION)
      keyword_tss_ptr<T>::operator=(value);
  #elif defined(BOOST_ASIO_WINDOWS)
      win_tss_ptr<T>::operator=(value);
  #elif defined(BOOST_ASIO_HAS_PTHREADS)
      posix_tss_ptr<T>::operator=(value);
  #endif
    }
  };
  
  } // namespace detail
  } // namespace asio
  } // namespace boost
  
  #include <boost/asio/detail/pop_options.hpp>
  
  #endif // BOOST_ASIO_DETAIL_TSS_PTR_HPP
  