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()23 int64_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)28 ahg20::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