1 // Copyright 2017 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef TIME_UTILS_H_ 6 #define TIME_UTILS_H_ 7 8 #include <stdint.h> 9 10 namespace time_utils { 11 12 uint64_t GetTimestamp(); 13 14 class PeriodicTimer { 15 public: 16 PeriodicTimer(int interval_ms); 17 ~PeriodicTimer(); 18 19 void Start(); 20 void Stop(); 21 // Wait for next tick. Returns false if interrupted by Stop() or not started. 22 bool Wait(); 23 24 private: 25 PeriodicTimer(const PeriodicTimer&) = delete; 26 void operator=(const PeriodicTimer&) = delete; 27 28 const int interval_ms_; 29 int timer_fd_; 30 }; 31 32 } // namespace time_utils 33 34 #endif // TIME_UTILS_ 35
