1 /* 2 * Copyright (C) 2020 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 #include <chrono> 18 #include "util.h" 19 20 namespace goldfish { 21 namespace util { 22 nowNanos()23int64_t nowNanos() { 24 using namespace std::chrono; 25 return time_point_cast<nanoseconds>(system_clock::now()).time_since_epoch().count(); 26 } 27 makeElapsedRealtime(long long timestampNs)28ahg20::ElapsedRealtime makeElapsedRealtime(long long timestampNs) { 29 ahg20::ElapsedRealtime ts = { 30 .flags = ahg20::ElapsedRealtimeFlags::HAS_TIMESTAMP_NS | 31 ahg20::ElapsedRealtimeFlags::HAS_TIME_UNCERTAINTY_NS, 32 .timestampNs = static_cast<uint64_t>(timestampNs), 33 .timeUncertaintyNs = 1000000 34 }; 35 36 return ts; 37 } 38 39 } // namespace util 40 } // namespace goldfish 41