cocoa_time.c (1890B)
1 //======================================================================== 2 // GLFW 3.4 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 #if defined(GLFW_BUILD_COCOA_TIMER) 30 31 #include <mach/mach_time.h> 32 33 34 ////////////////////////////////////////////////////////////////////////// 35 ////// GLFW platform API ////// 36 ////////////////////////////////////////////////////////////////////////// 37 38 void _glfwPlatformInitTimer(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 uint64_t _glfwPlatformGetTimerValue(void) 47 { 48 return mach_absolute_time(); 49 } 50 51 uint64_t _glfwPlatformGetTimerFrequency(void) 52 { 53 return _glfw.timer.ns.frequency; 54 } 55 56 #endif // GLFW_BUILD_COCOA_TIMER 57