1 /* 2 * Copyright 2022 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ANDROID_HWC_TIME_H 18 #define ANDROID_HWC_TIME_H 19 20 #include <utils/Timers.h> 21 22 #include <chrono> 23 24 #include "Common.h" 25 26 namespace aidl::android::hardware::graphics::composer3::impl { 27 28 using Nanoseconds = std::chrono::nanoseconds; 29 30 using TimePoint = std::chrono::time_point<std::chrono::steady_clock>; 31 asTimePoint(int64_t nanos)32inline TimePoint asTimePoint(int64_t nanos) { 33 return TimePoint(Nanoseconds(nanos)); 34 } 35 now()36inline TimePoint now() { 37 return asTimePoint(systemTime(SYSTEM_TIME_MONOTONIC)); 38 } 39 asNanosDuration(Nanoseconds duration)40inline int32_t asNanosDuration(Nanoseconds duration) { 41 return duration.count(); 42 } 43 asNanosTimePoint(TimePoint time)44inline int64_t asNanosTimePoint(TimePoint time) { 45 TimePoint zero(Nanoseconds(0)); 46 return std::chrono::duration_cast<Nanoseconds>(time - zero).count(); 47 } 48 49 } // namespace aidl::android::hardware::graphics::composer3::impl 50 51 #endif 52