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 #pragma once 18 19 #include <stdint.h> 20 21 // Return the current timestamp from a monotonic clock in milliseconds. 22 uint64_t now(); 23 24 class Timer { 25 public: 26 // Create a timer, initially the timer is already expired. 27 Timer(); 28 29 // Set the timer to expire in |seconds| seconds. 30 void expireSeconds(uint64_t seconds); 31 32 // Return true if the timer has expired. 33 bool expired() const; 34 // Get the remaining time on the timer in milliseconds. 35 uint64_t remainingMillis() const; 36 37 private: 38 uint64_t mExpires; 39 }; 40 41
