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Side by Side Diff: third_party/WebKit/Source/platform/scheduler/base/lazy_now.h

Issue 2118903002: scheduler: Move the Blink scheduler into Blink (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Rebased Created 4 years, 4 months ago
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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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