medfall

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cocoa_time.cc (2063B)


      1 //========================================================================
      2 // GLFW 3.3 macOS - www.glfw.org
      3 //------------------------------------------------------------------------
      4 // Copyright (c) 2009-2016 Camilla Löwy <elmindreda@glfw.org>
      5 //
      6 // This software is provided 'as-is', without any express or implied
      7 // warranty. In no event will the authors be held liable for any damages
      8 // arising from the use of this software.
      9 //
     10 // Permission is granted to anyone to use this software for any purpose,
     11 // including commercial applications, and to alter it and redistribute it
     12 // freely, subject to the following restrictions:
     13 //
     14 // 1. The origin of this software must not be misrepresented; you must not
     15 //    claim that you wrote the original software. If you use this software
     16 //    in a product, an acknowledgment in the product documentation would
     17 //    be appreciated but is not required.
     18 //
     19 // 2. Altered source versions must be plainly marked as such, and must not
     20 //    be misrepresented as being the original software.
     21 //
     22 // 3. This notice may not be removed or altered from any source
     23 //    distribution.
     24 //
     25 //========================================================================
     26 
     27 #include "internal.h"
     28 
     29 #include <mach/mach_time.h>
     30 
     31 
     32 //////////////////////////////////////////////////////////////////////////
     33 //////                       GLFW internal API                      //////
     34 //////////////////////////////////////////////////////////////////////////
     35 
     36 // Initialise timer
     37 //
     38 void _glfwInitTimerNS(void)
     39 {
     40     mach_timebase_info_data_t info;
     41     mach_timebase_info(&info);
     42 
     43     _glfw.timer.ns.frequency = (info.denom * 1e9) / info.numer;
     44 }
     45 
     46 
     47 //////////////////////////////////////////////////////////////////////////
     48 //////                       GLFW platform API                      //////
     49 //////////////////////////////////////////////////////////////////////////
     50 
     51 uint64_t _glfwPlatformGetTimerValue(void)
     52 {
     53     return mach_absolute_time();
     54 }
     55 
     56 uint64_t _glfwPlatformGetTimerFrequency(void)
     57 {
     58     return _glfw.timer.ns.frequency;
     59 }
     60