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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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 COMPONENTS_SCHEDULER_BASE_LAZY_NOW_H_ | 5 #ifndef THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_BASE_LAZY_NOW_H_ |
6 #define COMPONENTS_SCHEDULER_BASE_LAZY_NOW_H_ | 6 #define THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_BASE_LAZY_NOW_H_ |
7 | 7 |
8 #include "base/time/time.h" | 8 #include "base/time/time.h" |
9 #include "components/scheduler/scheduler_export.h" | 9 #include "public/platform/WebCommon.h" |
10 | 10 |
11 namespace base { | 11 namespace base { |
12 class TickClock; | 12 class TickClock; |
13 } | 13 } |
14 | 14 |
| 15 namespace blink { |
15 namespace scheduler { | 16 namespace scheduler { |
16 | 17 |
17 // Now() is somewhat expensive so it makes sense not to call Now() unless we | 18 // Now() is somewhat expensive so it makes sense not to call Now() unless we |
18 // really need to. | 19 // really need to. |
19 class SCHEDULER_EXPORT LazyNow { | 20 class BLINK_PLATFORM_EXPORT LazyNow { |
20 public: | 21 public: |
21 explicit LazyNow(base::TimeTicks now) : tick_clock_(nullptr), now_(now) { | 22 explicit LazyNow(base::TimeTicks now) : tick_clock_(nullptr), now_(now) { |
22 DCHECK(!now.is_null()); | 23 DCHECK(!now.is_null()); |
23 } | 24 } |
24 | 25 |
25 explicit LazyNow(base::TickClock* tick_clock) : tick_clock_(tick_clock) {} | 26 explicit LazyNow(base::TickClock* tick_clock) : tick_clock_(tick_clock) {} |
26 | 27 |
27 base::TimeTicks Now(); | 28 base::TimeTicks Now(); |
28 | 29 |
29 private: | 30 private: |
30 base::TickClock* tick_clock_; // NOT OWNED | 31 base::TickClock* tick_clock_; // NOT OWNED |
31 base::TimeTicks now_; | 32 base::TimeTicks now_; |
32 }; | 33 }; |
33 | 34 |
34 } // namespace scheduler | 35 } // namespace scheduler |
| 36 } // namespace blink |
35 | 37 |
36 #endif // COMPONENTS_SCHEDULER_BASE_LAZY_NOW_H_ | 38 #endif // THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_BASE_LAZY_NOW_H_ |
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