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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 { |
11 class WebGraphicsContext3D; | 11 class WebGraphicsContext3D; |
12 } | 12 } |
13 | 13 |
14 namespace cc { | 14 namespace cc { |
15 | 15 |
16 class Thread; | 16 class Thread; |
17 | 17 |
18 class RateLimiterClient { | 18 class RateLimiterClient { |
19 public: | 19 public: |
20 virtual void rateLimit() = 0; | 20 virtual void rateLimit() = 0; |
21 | |
22 protected: | |
23 virtual ~RateLimiterClient() { } | |
24 }; | 21 }; |
25 | 22 |
26 // A RateLimiter can be used to make sure that a single context does not dominat
e all execution time. | 23 // A RateLimiter can be used to make sure that a single context does not dominat
e all execution time. |
27 // To use, construct a RateLimiter class around the context and call start() whe
never calls are made on the | 24 // To use, construct a RateLimiter class around the context and call start() whe
never calls are made on the |
28 // context outside of normal flow control. RateLimiter will block if the context
is too far ahead of the | 25 // context outside of normal flow control. RateLimiter will block if the context
is too far ahead of the |
29 // compositor. | 26 // compositor. |
30 class RateLimiter : public base::RefCounted<RateLimiter> { | 27 class RateLimiter : public base::RefCounted<RateLimiter> { |
31 public: | 28 public: |
32 static scoped_refptr<RateLimiter> create(WebKit::WebGraphicsContext3D*, Rate
LimiterClient*, Thread*); | 29 static scoped_refptr<RateLimiter> create(WebKit::WebGraphicsContext3D*, Rate
LimiterClient*, Thread*); |
33 | 30 |
(...skipping 12 matching lines...) Expand all Loading... |
46 void rateLimitContext(); | 43 void rateLimitContext(); |
47 | 44 |
48 WebKit::WebGraphicsContext3D* m_context; | 45 WebKit::WebGraphicsContext3D* m_context; |
49 bool m_active; | 46 bool m_active; |
50 RateLimiterClient *m_client; | 47 RateLimiterClient *m_client; |
51 Thread* m_thread; | 48 Thread* m_thread; |
52 }; | 49 }; |
53 | 50 |
54 } | 51 } |
55 #endif // CC_RATE_LIMITER_H_ | 52 #endif // CC_RATE_LIMITER_H_ |
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