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1 // Copyright 2012 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_RESOURCES_RESOURCE_UPDATE_CONTROLLER_H_ | |
6 #define CC_RESOURCES_RESOURCE_UPDATE_CONTROLLER_H_ | |
7 | |
8 #include "base/basictypes.h" | |
9 #include "base/memory/scoped_ptr.h" | |
10 #include "base/memory/weak_ptr.h" | |
11 #include "base/time/time.h" | |
12 #include "cc/base/cc_export.h" | |
13 #include "cc/resources/resource_update_queue.h" | |
14 | |
15 namespace base { class SingleThreadTaskRunner; } | |
16 | |
17 namespace cc { | |
18 | |
19 class ResourceProvider; | |
20 | |
21 class ResourceUpdateControllerClient { | |
22 public: | |
23 virtual void ReadyToFinalizeTextureUpdates() = 0; | |
24 | |
25 protected: | |
26 virtual ~ResourceUpdateControllerClient() {} | |
27 }; | |
28 | |
29 class CC_EXPORT ResourceUpdateController { | |
30 public: | |
31 static scoped_ptr<ResourceUpdateController> Create( | |
32 ResourceUpdateControllerClient* client, | |
33 base::SingleThreadTaskRunner* task_runner, | |
34 scoped_ptr<ResourceUpdateQueue> queue, | |
35 ResourceProvider* resource_provider) { | |
36 return make_scoped_ptr(new ResourceUpdateController( | |
37 client, task_runner, queue.Pass(), resource_provider)); | |
38 } | |
39 static size_t MaxPartialTextureUpdates(); | |
40 | |
41 virtual ~ResourceUpdateController(); | |
42 | |
43 // Discard uploads to textures that were evicted on the impl thread. | |
44 void DiscardUploadsToEvictedResources(); | |
45 | |
46 void PerformMoreUpdates(base::TimeTicks time_limit); | |
47 void Finalize(); | |
48 | |
49 | |
50 // Virtual for testing. | |
51 virtual size_t UpdateMoreTexturesSize() const; | |
52 virtual base::TimeTicks UpdateMoreTexturesCompletionTime(); | |
53 | |
54 protected: | |
55 ResourceUpdateController(ResourceUpdateControllerClient* client, | |
56 base::SingleThreadTaskRunner* task_runner, | |
57 scoped_ptr<ResourceUpdateQueue> queue, | |
58 ResourceProvider* resource_provider); | |
59 | |
60 private: | |
61 static size_t MaxFullUpdatesPerTick(ResourceProvider* resource_provider); | |
62 | |
63 size_t MaxBlockingUpdates() const; | |
64 | |
65 void UpdateTexture(ResourceUpdate update); | |
66 | |
67 // This returns true when there were textures left to update. | |
68 bool UpdateMoreTexturesIfEnoughTimeRemaining(); | |
69 void UpdateMoreTexturesNow(); | |
70 void OnTimerFired(); | |
71 | |
72 ResourceUpdateControllerClient* client_; | |
73 scoped_ptr<ResourceUpdateQueue> queue_; | |
74 ResourceProvider* resource_provider_; | |
75 base::TimeTicks time_limit_; | |
76 size_t texture_updates_per_tick_; | |
77 bool first_update_attempt_; | |
78 base::SingleThreadTaskRunner* task_runner_; | |
79 bool task_posted_; | |
80 bool ready_to_finalize_; | |
81 base::WeakPtrFactory<ResourceUpdateController> weak_factory_; | |
82 | |
83 DISALLOW_COPY_AND_ASSIGN(ResourceUpdateController); | |
84 }; | |
85 | |
86 } // namespace cc | |
87 | |
88 #endif // CC_RESOURCES_RESOURCE_UPDATE_CONTROLLER_H_ | |
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