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, 25 target, 26 format)); 27 } 28 29 virtual ~ResourcePool(); 30 31 scoped_ptr<ScopedResource> AcquireResource(gfx::Size size); 32 void ReleaseResource(scoped_ptr<ScopedResource>); 33 34 void SetResourceUsageLimits(size_t max_memory_usage_bytes, 35 size_t max_unused_memory_usage_bytes, 36 size_t max_resource_count); 37 38 void ReduceResourceUsage(); 39 void CheckBusyResources(); 40 total_memory_usage_bytes()41 size_t total_memory_usage_bytes() const { 42 return memory_usage_bytes_; 43 } acquired_memory_usage_bytes()44 size_t acquired_memory_usage_bytes() const { 45 return memory_usage_bytes_ - unused_memory_usage_bytes_; 46 } acquired_resource_count()47 size_t acquired_resource_count() const { 48 return resource_count_ - unused_resources_.size(); 49 } 50 51 protected: 52 ResourcePool(ResourceProvider* resource_provider, 53 GLenum target, 54 ResourceFormat format); 55 56 bool ResourceUsageTooHigh(); 57 58 private: 59 void DidFinishUsingResource(ScopedResource* resource); 60 61 ResourceProvider* resource_provider_; 62 const GLenum target_; 63 const ResourceFormat format_; 64 size_t max_memory_usage_bytes_; 65 size_t max_unused_memory_usage_bytes_; 66 size_t max_resource_count_; 67 size_t memory_usage_bytes_; 68 size_t unused_memory_usage_bytes_; 69 size_t resource_count_; 70 71 typedef std::list<ScopedResource*> ResourceList; 72 ResourceList unused_resources_; 73 ResourceList busy_resources_; 74 75 DISALLOW_COPY_AND_ASSIGN(ResourcePool); 76 }; 77 78 } // namespace cc 79 80 #endif // CC_RESOURCES_RESOURCE_POOL_H_ 81