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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef BASE_TICK_CLOCK_H_ | 5 #ifndef BASE_TIME_TICK_CLOCK_H_ |
6 #define BASE_TICK_CLOCK_H_ | 6 #define BASE_TIME_TICK_CLOCK_H_ |
7 | 7 |
8 #include "base/base_export.h" | 8 #include "base/base_export.h" |
9 #include "base/time/time.h" | 9 #include "base/time/time.h" |
10 | 10 |
11 namespace base { | 11 namespace base { |
12 | 12 |
13 // A TickClock is an interface for objects that vend TimeTicks. It is | 13 // A TickClock is an interface for objects that vend TimeTicks. It is |
14 // intended to be able to test the behavior of classes with respect to | 14 // intended to be able to test the behavior of classes with respect to |
15 // non-decreasing time. | 15 // non-decreasing time. |
16 // | 16 // |
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30 | 30 |
31 // NowTicks() must be safe to call from any thread. The caller may | 31 // NowTicks() must be safe to call from any thread. The caller may |
32 // assume that NowTicks() is monotonic (but not strictly monotonic). | 32 // assume that NowTicks() is monotonic (but not strictly monotonic). |
33 // In other words, the returned TimeTicks will never decrease with | 33 // In other words, the returned TimeTicks will never decrease with |
34 // time, although they might "stand still". | 34 // time, although they might "stand still". |
35 virtual TimeTicks NowTicks() = 0; | 35 virtual TimeTicks NowTicks() = 0; |
36 }; | 36 }; |
37 | 37 |
38 } // namespace base | 38 } // namespace base |
39 | 39 |
40 #endif // BASE_TICK_CLOCK_H_ | 40 #endif // BASE_TIME_TICK_CLOCK_H_ |
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