text: ////////////////////////////////////////////////////////////
  //
  // SFML - Simple and Fast Multimedia Library
  // Copyright (C) 2007-2016 Laurent Gomila (laurent@sfml-dev.org)
  //
  // This software is provided 'as-is', without any express or implied warranty.
  // In no event will the authors be held liable for any damages arising from the use of this software.
  //
  // Permission is granted to anyone to use this software for any purpose,
  // including commercial applications, and to alter it and redistribute it freely,
  // subject to the following restrictions:
  //
  // 1. The origin of this software must not be misrepresented;
  //    you must not claim that you wrote the original software.
  //    If you use this software in a product, an acknowledgment
  //    in the product documentation would be appreciated but is not required.
  //
  // 2. Altered source versions must be plainly marked as such,
  //    and must not be misrepresented as being the original software.
  //
  // 3. This notice may not be removed or altered from any source distribution.
  //
  ////////////////////////////////////////////////////////////
  
  #ifndef SFML_THREADIMPL_HPP
  #define SFML_THREADIMPL_HPP
  
  ////////////////////////////////////////////////////////////
  // Headers
  ////////////////////////////////////////////////////////////
  #include <SFML/System/NonCopyable.hpp>
  #include <windows.h>
  
  // Fix for unaligned stack with clang and GCC on Windows XP 32-bit
  #if defined(SFML_SYSTEM_WINDOWS) && (defined(__clang__) || defined(__GNUC__))
  
      #define ALIGN_STACK __attribute__((__force_align_arg_pointer__))
  
  #else
  
      #define ALIGN_STACK
  
  #endif
  
  
  namespace sf
  {
  class Thread;
  
  namespace priv
  {
  ////////////////////////////////////////////////////////////
  /// \brief Windows implementation of threads
  ////////////////////////////////////////////////////////////
  class ThreadImpl : NonCopyable
  {
  public:
  
      ////////////////////////////////////////////////////////////
      /// \brief Default constructor, launch the thread
      ///
      /// \param owner The Thread instance to run
      ///
      ////////////////////////////////////////////////////////////
      ThreadImpl(Thread* owner);
  
      ////////////////////////////////////////////////////////////
      /// \brief Destructor
      ///
      ////////////////////////////////////////////////////////////
      ~ThreadImpl();
  
      ////////////////////////////////////////////////////////////
      /// \brief Wait until the thread finishes
      ///
      ////////////////////////////////////////////////////////////
      void wait();
  
      ////////////////////////////////////////////////////////////
      /// \brief Terminate the thread
      ///
      ////////////////////////////////////////////////////////////
      void terminate();
  
  private:
  
      ////////////////////////////////////////////////////////////
      /// \brief Global entry point for all threads
      ///
      /// \param userData User-defined data (contains the Thread instance)
      ///
      /// \return OS specific error code
      ///
      ////////////////////////////////////////////////////////////
      ALIGN_STACK static unsigned int __stdcall entryPoint(void* userData);
  
      ////////////////////////////////////////////////////////////
      // Member data
      ////////////////////////////////////////////////////////////
      HANDLE m_thread; ///< Win32 thread handle
      unsigned int m_threadId; ///< Win32 thread identifier
  };
  
  } // namespace priv
  
  } // namespace sf
  
  
  #endif // SFML_THREADIMPL_HPP
  