1 /* Copyright (c) 2017-2018 Hans-Kristian Arntzen 2 * 3 * Permission is hereby granted, free of charge, to any person obtaining 4 * a copy of this software and associated documentation files (the 5 * "Software"), to deal in the Software without restriction, including 6 * without limitation the rights to use, copy, modify, merge, publish, 7 * distribute, sublicense, and/or sell copies of the Software, and to 8 * permit persons to whom the Software is furnished to do so, subject to 9 * the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be 12 * included in all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 15 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 17 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 18 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 19 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 20 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 21 */ 22 23 #pragma once 24 25 #include <stdint.h> 26 27 namespace Util 28 { 29 class FrameTimer 30 { 31 public: 32 FrameTimer(); 33 34 void reset(); 35 double frame(); 36 double frame(double frame_time); 37 double get_elapsed() const; 38 double get_frame_time() const; 39 40 void enter_idle(); 41 void leave_idle(); 42 43 private: 44 int64_t start; 45 int64_t last; 46 int64_t last_period; 47 int64_t idle_start; 48 int64_t idle_time = 0; 49 int64_t get_time(); 50 }; 51 52 class Timer 53 { 54 public: 55 void start(); 56 double end(); 57 58 private: 59 int64_t t = 0; 60 }; 61 62 int64_t get_current_time_nsecs(); 63 }