1 /*
2  * Copyright 2017, 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 "timer.h"
18 
19 #include <time.h>
20 
now()21 uint64_t now() {
22     struct timespec time = { 0, 0 };
23     clock_gettime(CLOCK_MONOTONIC, &time);
24     return static_cast<uint64_t>(time.tv_sec) * 1000u +
25            static_cast<uint64_t>(time.tv_nsec / 1000000u);
26 }
27 
Timer()28 Timer::Timer() : mExpires(0) {
29 }
30 
expireSeconds(uint64_t seconds)31 void Timer::expireSeconds(uint64_t seconds) {
32     mExpires = now() + seconds * 1000u;
33 }
34 
expired() const35 bool Timer::expired() const {
36     return now() >= mExpires;
37 }
38 
remainingMillis() const39 uint64_t Timer::remainingMillis() const {
40     uint64_t current = now();
41     if (current > mExpires) {
42         return 0;
43     }
44     return mExpires - current;
45 }
46 
47