1*635a8641SAndroid Build Coastguard Worker // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2*635a8641SAndroid Build Coastguard Worker // Use of this source code is governed by a BSD-style license that can be 3*635a8641SAndroid Build Coastguard Worker // found in the LICENSE file. 4*635a8641SAndroid Build Coastguard Worker 5*635a8641SAndroid Build Coastguard Worker #ifndef BASE_TIME_DEFAULT_TICK_CLOCK_H_ 6*635a8641SAndroid Build Coastguard Worker #define BASE_TIME_DEFAULT_TICK_CLOCK_H_ 7*635a8641SAndroid Build Coastguard Worker 8*635a8641SAndroid Build Coastguard Worker #include "base/base_export.h" 9*635a8641SAndroid Build Coastguard Worker #include "base/time/tick_clock.h" 10*635a8641SAndroid Build Coastguard Worker 11*635a8641SAndroid Build Coastguard Worker namespace base { 12*635a8641SAndroid Build Coastguard Worker 13*635a8641SAndroid Build Coastguard Worker // DefaultClock is a Clock implementation that uses TimeTicks::Now(). 14*635a8641SAndroid Build Coastguard Worker class BASE_EXPORT DefaultTickClock : public TickClock { 15*635a8641SAndroid Build Coastguard Worker public: 16*635a8641SAndroid Build Coastguard Worker ~DefaultTickClock() override; 17*635a8641SAndroid Build Coastguard Worker 18*635a8641SAndroid Build Coastguard Worker // Simply returns TimeTicks::Now(). 19*635a8641SAndroid Build Coastguard Worker TimeTicks NowTicks() const override; 20*635a8641SAndroid Build Coastguard Worker 21*635a8641SAndroid Build Coastguard Worker // Returns a shared instance of DefaultTickClock. This is thread-safe. 22*635a8641SAndroid Build Coastguard Worker static const DefaultTickClock* GetInstance(); 23*635a8641SAndroid Build Coastguard Worker }; 24*635a8641SAndroid Build Coastguard Worker 25*635a8641SAndroid Build Coastguard Worker } // namespace base 26*635a8641SAndroid Build Coastguard Worker 27*635a8641SAndroid Build Coastguard Worker #endif // BASE_TIME_DEFAULT_TICK_CLOCK_H_ 28