win32_time.c (1911B)
1 //======================================================================== 2 // GLFW 3.4 Win32 - www.glfw.org 3 //------------------------------------------------------------------------ 4 // Copyright (c) 2002-2006 Marcus Geelnard 5 // Copyright (c) 2006-2017 Camilla Löwy <elmindreda@glfw.org> 6 // 7 // This software is provided 'as-is', without any express or implied 8 // warranty. In no event will the authors be held liable for any damages 9 // arising from the use of this software. 10 // 11 // Permission is granted to anyone to use this software for any purpose, 12 // including commercial applications, and to alter it and redistribute it 13 // freely, subject to the following restrictions: 14 // 15 // 1. The origin of this software must not be misrepresented; you must not 16 // claim that you wrote the original software. If you use this software 17 // in a product, an acknowledgment in the product documentation would 18 // be appreciated but is not required. 19 // 20 // 2. Altered source versions must be plainly marked as such, and must not 21 // be misrepresented as being the original software. 22 // 23 // 3. This notice may not be removed or altered from any source 24 // distribution. 25 // 26 //======================================================================== 27 28 #include "internal.h" 29 30 #if defined(GLFW_BUILD_WIN32_TIMER) 31 32 ////////////////////////////////////////////////////////////////////////// 33 ////// GLFW platform API ////// 34 ////////////////////////////////////////////////////////////////////////// 35 36 void _glfwPlatformInitTimer(void) 37 { 38 QueryPerformanceFrequency((LARGE_INTEGER*) &_glfw.timer.win32.frequency); 39 } 40 41 uint64_t _glfwPlatformGetTimerValue(void) 42 { 43 uint64_t value; 44 QueryPerformanceCounter((LARGE_INTEGER*) &value); 45 return value; 46 } 47 48 uint64_t _glfwPlatformGetTimerFrequency(void) 49 { 50 return _glfw.timer.win32.frequency; 51 } 52 53 #endif // GLFW_BUILD_WIN32_TIMER 54