text: //========================================================================
  // GLFW 3.3 Win32 - www.glfw.org
  //------------------------------------------------------------------------
  // Copyright (c) 2002-2006 Marcus Geelnard
  // Copyright (c) 2006-2016 Camilla Berglund <elmindreda@glfw.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.
  //
  //========================================================================
  
  #include "internal.h"
  
  
  //////////////////////////////////////////////////////////////////////////
  //////                       GLFW internal API                      //////
  //////////////////////////////////////////////////////////////////////////
  
  GLFWbool _glfwInitThreadLocalStorageWin32(void)
  {
      _glfw.win32_tls.context = TlsAlloc();
      if (_glfw.win32_tls.context == TLS_OUT_OF_INDEXES)
      {
          _glfwInputError(GLFW_PLATFORM_ERROR,
                          "Win32: Failed to allocate TLS index");
          return GLFW_FALSE;
      }
  
      _glfw.win32_tls.allocated = GLFW_TRUE;
      return GLFW_TRUE;
  }
  
  void _glfwTerminateThreadLocalStorageWin32(void)
  {
      if (_glfw.win32_tls.allocated)
          TlsFree(_glfw.win32_tls.context);
  }
  
  
  //////////////////////////////////////////////////////////////////////////
  //////                       GLFW platform API                      //////
  //////////////////////////////////////////////////////////////////////////
  
  void _glfwPlatformSetCurrentContext(_GLFWwindow* context)
  {
      TlsSetValue(_glfw.win32_tls.context, context);
  }
  
  _GLFWwindow* _glfwPlatformGetCurrentContext(void)
  {
      return TlsGetValue(_glfw.win32_tls.context);
  }
  
  