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1 // Copyright 2011 The Chromium Authors. All rights reserved. | 1 // Copyright 2011 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 CCSchedulerStateMachine_h | 5 #ifndef CCSchedulerStateMachine_h |
6 #define CCSchedulerStateMachine_h | 6 #define CCSchedulerStateMachine_h |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 #include <wtf/Noncopyable.h> | |
10 | 9 |
11 namespace cc { | 10 namespace cc { |
12 | 11 |
13 // The CCSchedulerStateMachine decides how to coordinate main thread activites | 12 // The CCSchedulerStateMachine decides how to coordinate main thread activites |
14 // like painting/running javascript with rendering and input activities on the | 13 // like painting/running javascript with rendering and input activities on the |
15 // impl thread. | 14 // impl thread. |
16 // | 15 // |
17 // The state machine tracks internal state but is also influenced by external st ate. | 16 // The state machine tracks internal state but is also influenced by external st ate. |
18 // Internal state includes things like whether a frame has been requested, while | 17 // Internal state includes things like whether a frame has been requested, while |
19 // external state includes things like the current time being near to the vblank time. | 18 // external state includes things like the current time being near to the vblank time. |
20 // | 19 // |
21 // The scheduler seperates "what to do next" from the updating of its internal s tate to | 20 // The scheduler seperates "what to do next" from the updating of its internal s tate to |
22 // make testing cleaner. | 21 // make testing cleaner. |
23 class CCSchedulerStateMachine { | 22 class CCSchedulerStateMachine { |
jamesr
2012/09/28 20:37:06
this class should be noncopyable as well
tfarina
2012/09/28 20:48:04
Done.
| |
24 public: | 23 public: |
25 CCSchedulerStateMachine(); | 24 CCSchedulerStateMachine(); |
26 | 25 |
27 enum CommitState { | 26 enum CommitState { |
28 COMMIT_STATE_IDLE, | 27 COMMIT_STATE_IDLE, |
29 COMMIT_STATE_FRAME_IN_PROGRESS, | 28 COMMIT_STATE_FRAME_IN_PROGRESS, |
30 COMMIT_STATE_READY_TO_COMMIT, | 29 COMMIT_STATE_READY_TO_COMMIT, |
31 COMMIT_STATE_WAITING_FOR_FIRST_DRAW, | 30 COMMIT_STATE_WAITING_FOR_FIRST_DRAW, |
32 }; | 31 }; |
33 | 32 |
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149 bool m_canBeginFrame; | 148 bool m_canBeginFrame; |
150 bool m_canDraw; | 149 bool m_canDraw; |
151 bool m_drawIfPossibleFailed; | 150 bool m_drawIfPossibleFailed; |
152 TextureState m_textureState; | 151 TextureState m_textureState; |
153 ContextState m_contextState; | 152 ContextState m_contextState; |
154 }; | 153 }; |
155 | 154 |
156 } | 155 } |
157 | 156 |
158 #endif // CCSchedulerStateMachine_h | 157 #endif // CCSchedulerStateMachine_h |
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