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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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