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1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef CC_RASTER_TASK_H_ | |
6 #define CC_RASTER_TASK_H_ | |
7 | |
8 #include <stdint.h> | |
9 | |
10 #include <vector> | |
11 | |
12 #include "base/memory/ref_counted.h" | |
13 #include "cc/base/cc_export.h" | |
14 #include "cc/raster/task_types.h" | |
15 | |
16 namespace cc { | |
17 | |
18 // A task which can be run by a TaskGraphRunner. To run a Task, it should be | |
19 // inserted into a TaskGraph, which can then be scheduled on the | |
20 // TaskGraphRunner. | |
21 class CC_EXPORT Task : public base::RefCountedThreadSafe<Task> { | |
22 public: | |
23 typedef std::vector<scoped_refptr<Task>> Vector; | |
24 | |
25 TaskType GetTaskType(); | |
reveman
2016/04/16 10:10:28
can this be private to tilemanager's task implemen
prashant.n
2016/04/17 17:37:48
Hmm. As TileManager only schedules the type of tas
| |
26 | |
27 // Indicates whether this task can be run at the same time as other tasks in | |
28 // the task graph. If false, this task will be scheduled with | |
29 // TASK_CATEGORY_NONCONCURRENT_FOREGROUND. The base implementation always | |
30 // returns true. | |
31 virtual bool SupportsConcurrentExecution() const; | |
reveman
2016/04/16 10:10:28
this should preferably be private to tilemanager's
prashant.n
2016/04/17 17:37:48
Making this generic would save having one more hie
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32 | |
33 const Task::Vector& dependencies() const { return dependencies_; } | |
reveman
2016/04/16 10:10:28
and this
prashant.n
2016/04/17 17:37:48
Having dependencies kept in Task, would help TileM
reveman
2016/04/17 20:08:23
Task class should not contain anything but what's
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34 | |
35 // Subclasses should implement this method. RunOnWorkerThread may be called | |
36 // on any thread, and subclasses are responsible for locking and thread | |
37 // safety. | |
38 virtual void RunOnWorkerThread() = 0; | |
39 | |
40 void WillRun(); | |
41 void DidRun(); | |
42 bool HasFinishedRunning() const; | |
prashant.n
2016/04/17 17:37:48
Basically Task should expose only HasFinishedRunni
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43 | |
44 void DidComplete(); | |
45 bool HasCompleted() const; | |
46 | |
47 protected: | |
48 friend class base::RefCountedThreadSafe<Task>; | |
49 | |
50 void SetTaskType(TaskType type); | |
51 | |
52 Task(); | |
53 explicit Task(Task::Vector* dependencies); | |
54 virtual ~Task(); | |
55 | |
56 Task::Vector dependencies_; | |
57 TaskType type_; | |
reveman
2016/04/16 10:10:28
private to tilemanager's implementation would mean
| |
58 bool will_run_; | |
59 bool did_run_; | |
60 bool did_complete_; | |
61 }; | |
62 | |
63 } // namespace cc | |
64 | |
65 #endif // CC_RASTER_TASK_H_ | |
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