text: //========================================================================
  // GLFW 3.4 macOS - www.glfw.org
  //------------------------------------------------------------------------
  // Copyright (c) 2009-2016 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.
  //
  //========================================================================
  // It is fine to use C99 in this file because it will not be built with VS
  //========================================================================
  
  #include "internal.h"
  
  #include <mach/mach_time.h>
  
  //////////////////////////////////////////////////////////////////////////
  //////                       GLFW internal API                      //////
  //////////////////////////////////////////////////////////////////////////
  
  // Initialise timer
  //
  void _glfwInitTimerNS(void) {
    mach_timebase_info_data_t info;
    mach_timebase_info(&info);
  
    _glfw.timer.ns.frequency = (info.denom * 1e9) / info.numer;
  }
  
  //////////////////////////////////////////////////////////////////////////
  //////                       GLFW platform API                      //////
  //////////////////////////////////////////////////////////////////////////
  
  uint64_t _glfwPlatformGetTimerValue(void) { return mach_absolute_time(); }
  
  uint64_t _glfwPlatformGetTimerFrequency(void) {
    return _glfw.timer.ns.frequency;
  }
  