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/base/cc_export.h" 12 #include "cc/output/renderer.h" 13 #include "cc/resources/resource.h" 14 #include "cc/resources/resource_format.h" 15 16 namespace cc { 17 class ScopedResource; 18 19 class CC_EXPORT ResourcePool { 20 public: Create(ResourceProvider * resource_provider,GLenum target,ResourceFormat format)21 static scoped_ptr<ResourcePool> Create(ResourceProvider* resource_provider, 22 GLenum target, 23 ResourceFormat format) { 24 return make_scoped_ptr(new ResourcePool(resource_provider, target, format)); 25 } 26 27 virtual ~ResourcePool(); 28 29 scoped_ptr<ScopedResource> AcquireResource(const gfx::Size& size); 30 void ReleaseResource(scoped_ptr<ScopedResource>); 31 32 void SetResourceUsageLimits(size_t max_memory_usage_bytes, 33 size_t max_unused_memory_usage_bytes, 34 size_t max_resource_count); 35 36 void ReduceResourceUsage(); 37 void CheckBusyResources(); 38 total_memory_usage_bytes()39 size_t total_memory_usage_bytes() const { return memory_usage_bytes_; } acquired_memory_usage_bytes()40 size_t acquired_memory_usage_bytes() const { 41 return memory_usage_bytes_ - unused_memory_usage_bytes_; 42 } total_resource_count()43 size_t total_resource_count() const { return resource_count_; } acquired_resource_count()44 size_t acquired_resource_count() const { 45 return resource_count_ - unused_resources_.size(); 46 } 47 resource_format()48 ResourceFormat resource_format() const { return format_; } 49 50 protected: 51 ResourcePool(ResourceProvider* resource_provider, 52 GLenum target, 53 ResourceFormat format); 54 55 bool ResourceUsageTooHigh(); 56 57 private: 58 void DidFinishUsingResource(ScopedResource* resource); 59 60 ResourceProvider* resource_provider_; 61 const GLenum target_; 62 const ResourceFormat format_; 63 size_t max_memory_usage_bytes_; 64 size_t max_unused_memory_usage_bytes_; 65 size_t max_resource_count_; 66 size_t memory_usage_bytes_; 67 size_t unused_memory_usage_bytes_; 68 size_t resource_count_; 69 70 typedef std::list<ScopedResource*> ResourceList; 71 ResourceList unused_resources_; 72 ResourceList busy_resources_; 73 74 DISALLOW_COPY_AND_ASSIGN(ResourcePool); 75 }; 76 77 } // namespace cc 78 79 #endif // CC_RESOURCES_RESOURCE_POOL_H_ 80