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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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 CONTENT_RENDERER_SCHEDULER_TASK_QUEUE_SELECTOR_H_ | 5 #ifndef CONTENT_RENDERER_SCHEDULER_TASK_QUEUE_SELECTOR_H_ |
6 #define CONTENT_RENDERER_SCHEDULER_TASK_QUEUE_SELECTOR_H_ | 6 #define CONTENT_RENDERER_SCHEDULER_TASK_QUEUE_SELECTOR_H_ |
7 | 7 |
8 #include <vector> | 8 #include <vector> |
9 | 9 |
10 #include "base/basictypes.h" | 10 #include "base/basictypes.h" |
11 | 11 |
12 namespace base { | 12 namespace base { |
13 class TaskQueue; | 13 class TaskQueue; |
14 namespace trace_event { | 14 namespace trace_event { |
15 class TracedValue; | 15 class TracedValue; |
16 } // namespace trace_event | 16 } // namespace trace_event |
17 | |
18 // TODO(ssid): remove these aliases after the tracing clients are moved to the | |
19 // new trace_event namespace. See crbug.com/451032. ETA: March 2015 | |
20 namespace debug { | |
21 using ::base::trace_event::TracedValue; | |
22 } // namespace debug | |
23 } // namespace base | 17 } // namespace base |
24 | 18 |
25 namespace content { | 19 namespace content { |
26 | 20 |
27 class TaskQueueSelector { | 21 class TaskQueueSelector { |
28 public: | 22 public: |
29 virtual ~TaskQueueSelector() {} | 23 virtual ~TaskQueueSelector() {} |
30 | 24 |
31 // Called once to register the work queues to be selected from. This function | 25 // Called once to register the work queues to be selected from. This function |
32 // is called on the main thread. | 26 // is called on the main thread. |
33 virtual void RegisterWorkQueues( | 27 virtual void RegisterWorkQueues( |
34 const std::vector<const base::TaskQueue*>& work_queues) = 0; | 28 const std::vector<const base::TaskQueue*>& work_queues) = 0; |
35 | 29 |
36 // Called to choose the work queue from which the next task should be taken | 30 // Called to choose the work queue from which the next task should be taken |
37 // and run. Return true if |out_queue| indicates the queue to service or | 31 // and run. Return true if |out_queue| indicates the queue to service or |
38 // false to avoid running any task. | 32 // false to avoid running any task. |
39 // | 33 // |
40 // This function is called on the main thread. | 34 // This function is called on the main thread. |
41 virtual bool SelectWorkQueueToService(size_t* out_queue_index) = 0; | 35 virtual bool SelectWorkQueueToService(size_t* out_queue_index) = 0; |
42 | 36 |
43 // Serialize the selector state for tracing. | 37 // Serialize the selector state for tracing. |
44 virtual void AsValueInto(base::debug::TracedValue* state) const = 0; | 38 virtual void AsValueInto(base::trace_event::TracedValue* state) const = 0; |
45 }; | 39 }; |
46 | 40 |
47 } // namespace content | 41 } // namespace content |
48 | 42 |
49 #endif // CONTENT_RENDERER_SCHEDULER_TASK_QUEUE_SELECTOR_H_ | 43 #endif // CONTENT_RENDERER_SCHEDULER_TASK_QUEUE_SELECTOR_H_ |
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