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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 CC_RATE_LIMITER_H_ | 5 #ifndef CC_RATE_LIMITER_H_ |
6 #define CC_RATE_LIMITER_H_ | 6 #define CC_RATE_LIMITER_H_ |
7 | 7 |
8 #include "base/memory/ref_counted.h" | 8 #include "base/memory/ref_counted.h" |
9 | 9 |
10 namespace WebKit { | 10 namespace WebKit { class WebGraphicsContext3D; } |
11 class WebGraphicsContext3D; | |
12 } | |
13 | 11 |
14 namespace cc { | 12 namespace cc { |
15 | 13 |
16 class Thread; | 14 class Thread; |
17 | 15 |
18 class RateLimiterClient { | 16 class RateLimiterClient { |
19 public: | 17 public: |
20 virtual void rateLimit() = 0; | 18 virtual void RateLimit() = 0; |
21 }; | 19 }; |
22 | 20 |
23 // A RateLimiter can be used to make sure that a single context does not dominat e all execution time. | 21 // A RateLimiter can be used to make sure that a single context does not |
24 // To use, construct a RateLimiter class around the context and call start() whe never calls are made on the | 22 // dominate all execution time. To use, construct a RateLimiter class around |
25 // context outside of normal flow control. RateLimiter will block if the context is too far ahead of the | 23 // the context and call Start() whenever calls are made on the context outside |
26 // compositor. | 24 // of normal flow control. RateLimiter will block if the context is too far |
25 // ahead of the compositor. | |
27 class RateLimiter : public base::RefCounted<RateLimiter> { | 26 class RateLimiter : public base::RefCounted<RateLimiter> { |
28 public: | 27 public: |
29 static scoped_refptr<RateLimiter> create(WebKit::WebGraphicsContext3D*, Rate LimiterClient*, Thread*); | 28 static scoped_refptr<RateLimiter> Create( |
29 WebKit::WebGraphicsContext3D* context, | |
30 RateLimiterClient* client, | |
31 Thread* thread); | |
30 | 32 |
31 void start(); | 33 void Start(); |
32 | 34 |
33 // Context and client will not be accessed after stop(). | 35 // Context and client will not be accessed after Stop(). |
34 void stop(); | 36 void Stop(); |
35 | 37 |
36 private: | 38 private: |
37 RateLimiter(WebKit::WebGraphicsContext3D*, RateLimiterClient*, Thread*); | 39 friend class base::RefCounted<RateLimiter>; |
38 ~RateLimiter(); | |
39 friend class base::RefCounted<RateLimiter>; | |
40 | 40 |
41 class Task; | 41 RateLimiter(WebKit::WebGraphicsContext3D* context, |
42 friend class Task; | 42 RateLimiterClient* client, |
43 void rateLimitContext(); | 43 Thread* thread); |
44 ~RateLimiter(); | |
44 | 45 |
45 WebKit::WebGraphicsContext3D* m_context; | 46 void RateLimitContext(); |
46 bool m_active; | 47 |
47 RateLimiterClient *m_client; | 48 WebKit::WebGraphicsContext3D* context_; |
48 Thread* m_thread; | 49 bool active_; |
50 RateLimiterClient* client_; | |
51 Thread* thread_; | |
52 | |
53 DISALLOW_COPY_AND_ASSIGN(RateLimiter); | |
49 }; | 54 }; |
50 | 55 |
51 } | 56 } |
danakj
2013/03/14 16:38:28
// namespace cc
| |
52 #endif // CC_RATE_LIMITER_H_ | 57 #endif // CC_RATE_LIMITER_H_ |
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