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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_TASK_QUEUE_MANAGER_DELEGATE_H_ | 5 #ifndef COMPONENTS_SCHEDULER_BASE_TASK_QUEUE_MANAGER_DELEGATE_H_ |
6 #define COMPONENTS_SCHEDULER_BASE_TASK_QUEUE_MANAGER_DELEGATE_H_ | 6 #define COMPONENTS_SCHEDULER_BASE_TASK_QUEUE_MANAGER_DELEGATE_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/message_loop/message_loop.h" | 10 #include "base/message_loop/message_loop.h" |
11 #include "base/time/tick_clock.h" | 11 #include "base/time/tick_clock.h" |
12 #include "components/scheduler/scheduler_export.h" | 12 #include "components/scheduler/scheduler_export.h" |
13 | 13 |
14 namespace scheduler { | 14 namespace scheduler { |
15 | 15 |
16 class SCHEDULER_EXPORT TaskQueueManagerDelegate | 16 class SCHEDULER_EXPORT TaskQueueManagerDelegate |
17 : public base::SingleThreadTaskRunner, | 17 : public base::SingleThreadTaskRunner, |
18 public base::TickClock { | 18 public base::TickClock { |
19 public: | 19 public: |
20 TaskQueueManagerDelegate() {} | 20 TaskQueueManagerDelegate() {} |
21 | 21 |
22 // Returns true if the task runner is nested (i.e., running a run loop within | 22 // Returns true if the task runner is nested (i.e., running a run loop within |
23 // a nested task). | 23 // a nested task). |
24 virtual bool IsNested() const = 0; | 24 virtual bool IsNested() const = 0; |
25 | 25 |
26 // Used by the TaskQueueManager to tell us there is no more non-delayed work | |
27 // to do. | |
28 // TODO(alexclarke): Try and find a better interface that avoids the need for | |
29 // this. | |
30 virtual void OnNoMoreImmediateWork() = 0; | |
31 | |
32 // Returns the time as a double which is the number of seconds since epoch | |
33 // (Jan 1, 1970). Blink uses this format to represent time. | |
34 virtual double CurrentTimeSeconds() const = 0; | |
35 | |
36 protected: | 26 protected: |
37 ~TaskQueueManagerDelegate() override {} | 27 ~TaskQueueManagerDelegate() override {} |
38 | 28 |
39 DISALLOW_COPY_AND_ASSIGN(TaskQueueManagerDelegate); | 29 DISALLOW_COPY_AND_ASSIGN(TaskQueueManagerDelegate); |
40 }; | 30 }; |
41 | 31 |
42 } // namespace scheduler | 32 } // namespace scheduler |
43 | 33 |
44 #endif // COMPONENTS_SCHEDULER_BASE_TASK_QUEUE_MANAGER_DELEGATE_H_ | 34 #endif // COMPONENTS_SCHEDULER_BASE_TASK_QUEUE_MANAGER_DELEGATE_H_ |
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