text: //========================================================================
  // GLFW 3.4 Win32 - www.glfw.org
  //------------------------------------------------------------------------
  // Copyright (c) 2002-2006 Marcus Geelnard
  // Copyright (c) 2006-2017 Camilla Löwy <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.
  //
  //========================================================================
  // Please use C89 style variable declarations in this file because VS 2010
  //========================================================================
  
  #include "internal.h"
  
  //////////////////////////////////////////////////////////////////////////
  //////                       GLFW internal API                      //////
  //////////////////////////////////////////////////////////////////////////
  
  // Initialise timer
  //
  void _glfwInitTimerWin32(void)
  {
  	uint64_t frequency;
  
  	if (QueryPerformanceFrequency((LARGE_INTEGER*)&frequency))
  	{
  		_glfw.timer.win32.hasPC = GLFW_TRUE;
  		_glfw.timer.win32.frequency = frequency;
  	}
  	else
  	{
  		_glfw.timer.win32.hasPC = GLFW_FALSE;
  		_glfw.timer.win32.frequency = 1000;
  	}
  }
  
  //////////////////////////////////////////////////////////////////////////
  //////                       GLFW platform API                      //////
  //////////////////////////////////////////////////////////////////////////
  
  uint64_t _glfwPlatformGetTimerValue(void)
  {
  	if (_glfw.timer.win32.hasPC)
  	{
  		uint64_t value;
  		QueryPerformanceCounter((LARGE_INTEGER*)&value);
  		return value;
  	}
  	else
  		return (uint64_t)timeGetTime();
  }
  
  uint64_t _glfwPlatformGetTimerFrequency(void)
  {
  	return _glfw.timer.win32.frequency;
  }