1 // Copyright (c) 2012 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 BASE_SIMPLE_TEST_TICK_CLOCK_H_ 6 #define BASE_SIMPLE_TEST_TICK_CLOCK_H_ 7 8 #include "base/compiler_specific.h" 9 #include "base/synchronization/lock.h" 10 #include "base/time/tick_clock.h" 11 #include "base/time/time.h" 12 13 namespace base { 14 15 // SimpleTestTickClock is a TickClock implementation that gives 16 // control over the returned TimeTicks objects. All methods may be 17 // called from any thread. 18 class SimpleTestTickClock : public TickClock { 19 public: 20 // Starts off with a clock set to TimeTicks(). 21 SimpleTestTickClock(); 22 virtual ~SimpleTestTickClock(); 23 24 virtual TimeTicks NowTicks() OVERRIDE; 25 26 // Advances the clock by |delta|, which must not be negative. 27 void Advance(TimeDelta delta); 28 29 private: 30 // Protects |now_ticks_|. 31 Lock lock_; 32 33 TimeTicks now_ticks_; 34 }; 35 36 } // namespace base 37 38 #endif // BASE_SIMPLE_TEST_TICK_CLOCK_H_ 39