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Side by Side Diff: third_party/WebKit/Source/platform/scheduler/renderer/deadline_task_runner.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_RENDERER_DEADLINE_TASK_RUNNER_H_ 5 #ifndef THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_RENDERER_DEADLINE_TASK_RUNN ER_H_
6 #define COMPONENTS_SCHEDULER_RENDERER_DEADLINE_TASK_RUNNER_H_ 6 #define THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_RENDERER_DEADLINE_TASK_RUNN ER_H_
7 7
8 #include "base/callback.h" 8 #include "base/callback.h"
9 #include "base/macros.h" 9 #include "base/macros.h"
10 #include "base/memory/weak_ptr.h" 10 #include "base/memory/weak_ptr.h"
11 #include "base/single_thread_task_runner.h" 11 #include "base/single_thread_task_runner.h"
12 #include "base/time/time.h" 12 #include "base/time/time.h"
13 #include "components/scheduler/base/cancelable_closure_holder.h" 13 #include "platform/scheduler/base/cancelable_closure_holder.h"
14 #include "components/scheduler/scheduler_export.h" 14 #include "public/platform/WebCommon.h"
15 15
16 namespace blink {
16 namespace scheduler { 17 namespace scheduler {
17 18
18 // Runs a posted task at latest by a given deadline, but possibly sooner. 19 // Runs a posted task at latest by a given deadline, but possibly sooner.
19 class SCHEDULER_EXPORT DeadlineTaskRunner { 20 class BLINK_PLATFORM_EXPORT DeadlineTaskRunner {
20 public: 21 public:
21 DeadlineTaskRunner(const base::Closure& callback, 22 DeadlineTaskRunner(const base::Closure& callback,
22 scoped_refptr<base::SingleThreadTaskRunner> task_runner); 23 scoped_refptr<base::SingleThreadTaskRunner> task_runner);
23 24
24 ~DeadlineTaskRunner(); 25 ~DeadlineTaskRunner();
25 26
26 // If there is no outstanding task then a task is posted to run after |delay|. 27 // If there is no outstanding task then a task is posted to run after |delay|.
27 // If there is an outstanding task which is scheduled to run: 28 // If there is an outstanding task which is scheduled to run:
28 // a) sooner - then this is a NOP. 29 // a) sooner - then this is a NOP.
29 // b) later - then the outstanding task is cancelled and a new task is 30 // b) later - then the outstanding task is cancelled and a new task is
30 // posted to run after |delay|. 31 // posted to run after |delay|.
31 // 32 //
32 // Once the deadline task has run, we reset. 33 // Once the deadline task has run, we reset.
33 void SetDeadline(const tracked_objects::Location& from_here, 34 void SetDeadline(const tracked_objects::Location& from_here,
34 base::TimeDelta delay, 35 base::TimeDelta delay,
35 base::TimeTicks now); 36 base::TimeTicks now);
36 37
37 private: 38 private:
38 void RunInternal(); 39 void RunInternal();
39 40
40 CancelableClosureHolder cancelable_run_internal_; 41 CancelableClosureHolder cancelable_run_internal_;
41 base::Closure callback_; 42 base::Closure callback_;
42 base::TimeTicks deadline_; 43 base::TimeTicks deadline_;
43 scoped_refptr<base::SingleThreadTaskRunner> task_runner_; 44 scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
44 45
45 DISALLOW_COPY_AND_ASSIGN(DeadlineTaskRunner); 46 DISALLOW_COPY_AND_ASSIGN(DeadlineTaskRunner);
46 }; 47 };
47 48
48 } // namespace scheduler 49 } // namespace scheduler
50 } // namespace blink
49 51
50 #endif // COMPONENTS_SCHEDULER_RENDERER_DEADLINE_TASK_RUNNER_H_ 52 #endif // THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_RENDERER_DEADLINE_TASK_R UNNER_H_
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