1 /*
2  * Copyright 2019, 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 #pragma once
18 
19 #include <stdint.h>
20 
21 namespace monotonic_time_stamper {
22 
23 class TimeStamp {
24 public:
TimeStamp(uint64_t ts)25     TimeStamp(uint64_t ts) : timestamp_(ts), ok_(true) {}
TimeStamp()26     TimeStamp() : timestamp_(0), ok_(false) {}
isOk()27     bool isOk() const { return ok_; }
uint64_t()28     operator const uint64_t() const { return timestamp_; }
29 
30 private:
31     uint64_t timestamp_;
32     bool ok_;
33 };
34 
35 TimeStamp now();
36 
37 }  // namespace monotonic_time_stamper
38