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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_POOL_H_ | |
6 #define CC_RESOURCES_RESOURCE_POOL_H_ | |
7 | |
8 #include <list> | |
9 | |
10 #include "base/memory/scoped_ptr.h" | |
11 #include "cc/output/renderer.h" | |
12 #include "cc/resources/resource.h" | |
13 #include "cc/resources/resource_format.h" | |
14 | |
15 namespace cc { | |
16 class ScopedResource; | |
17 | |
18 class ResourcePool { | |
19 public: | |
20 static scoped_ptr<ResourcePool> Create(ResourceProvider* resource_provider, | |
21 GLenum target) { | |
22 return make_scoped_ptr(new ResourcePool(resource_provider, target)); | |
23 } | |
24 | |
25 virtual ~ResourcePool(); | |
26 | |
27 scoped_ptr<ScopedResource> AcquireResource(const gfx::Size& size, | |
28 ResourceFormat format); | |
29 void ReleaseResource(scoped_ptr<ScopedResource>); | |
30 | |
31 void SetResourceUsageLimits(size_t max_memory_usage_bytes, | |
32 size_t max_unused_memory_usage_bytes, | |
33 size_t max_resource_count); | |
34 | |
35 void ReduceResourceUsage(); | |
36 // This might block if |wait_if_needed| is true and one of the currently | |
37 // busy resources has a read lock fence that needs to be waited upon before | |
38 // it can be locked for write again. | |
39 void CheckBusyResources(bool wait_if_needed); | |
40 | |
41 size_t total_memory_usage_bytes() const { return memory_usage_bytes_; } | |
42 size_t acquired_memory_usage_bytes() const { | |
43 return memory_usage_bytes_ - unused_memory_usage_bytes_; | |
44 } | |
45 size_t total_resource_count() const { return resource_count_; } | |
46 size_t acquired_resource_count() const { | |
47 return resource_count_ - unused_resources_.size(); | |
48 } | |
49 size_t busy_resource_count() const { return busy_resources_.size(); } | |
50 | |
51 protected: | |
52 ResourcePool(ResourceProvider* resource_provider, GLenum target); | |
53 | |
54 bool ResourceUsageTooHigh(); | |
55 | |
56 private: | |
57 void DidFinishUsingResource(ScopedResource* resource); | |
58 | |
59 ResourceProvider* resource_provider_; | |
60 const GLenum target_; | |
61 size_t max_memory_usage_bytes_; | |
62 size_t max_unused_memory_usage_bytes_; | |
63 size_t max_resource_count_; | |
64 size_t memory_usage_bytes_; | |
65 size_t unused_memory_usage_bytes_; | |
66 size_t resource_count_; | |
67 | |
68 typedef std::list<ScopedResource*> ResourceList; | |
69 ResourceList unused_resources_; | |
70 ResourceList busy_resources_; | |
71 | |
72 DISALLOW_COPY_AND_ASSIGN(ResourcePool); | |
73 }; | |
74 | |
75 } // namespace cc | |
76 | |
77 #endif // CC_RESOURCES_RESOURCE_POOL_H_ | |
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