| // Copyright 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CC_RESOURCES_RESOURCE_POOL_H_ |
| #define CC_RESOURCES_RESOURCE_POOL_H_ |
| |
| #include <list> |
| |
| #include "base/memory/scoped_ptr.h" |
| #include "cc/base/cc_export.h" |
| #include "cc/output/renderer.h" |
| #include "cc/resources/resource.h" |
| #include "cc/resources/resource_format.h" |
| |
| namespace cc { |
| |
| class CC_EXPORT ResourcePool { |
| public: |
| class CC_EXPORT Resource : public cc::Resource { |
| public: |
| Resource(ResourceProvider* resource_provider, |
| gfx::Size size, |
| ResourceFormat format); |
| ~Resource(); |
| |
| private: |
| ResourceProvider* resource_provider_; |
| |
| DISALLOW_COPY_AND_ASSIGN(Resource); |
| }; |
| |
| static scoped_ptr<ResourcePool> Create(ResourceProvider* resource_provider) { |
| return make_scoped_ptr(new ResourcePool(resource_provider)); |
| } |
| |
| virtual ~ResourcePool(); |
| |
| scoped_ptr<ResourcePool::Resource> AcquireResource( |
| gfx::Size size, ResourceFormat format); |
| void ReleaseResource(scoped_ptr<ResourcePool::Resource>); |
| |
| void SetResourceUsageLimits(size_t max_memory_usage_bytes, |
| size_t max_unused_memory_usage_bytes, |
| size_t max_resource_count); |
| |
| void ReduceResourceUsage(); |
| |
| size_t total_memory_usage_bytes() const { |
| return memory_usage_bytes_; |
| } |
| size_t acquired_memory_usage_bytes() const { |
| return memory_usage_bytes_ - unused_memory_usage_bytes_; |
| } |
| size_t acquired_resource_count() const { |
| return resource_count_ - unused_resources_.size(); |
| } |
| |
| protected: |
| explicit ResourcePool(ResourceProvider* resource_provider); |
| |
| bool ResourceUsageTooHigh(); |
| |
| private: |
| ResourceProvider* resource_provider_; |
| size_t max_memory_usage_bytes_; |
| size_t max_unused_memory_usage_bytes_; |
| size_t max_resource_count_; |
| size_t memory_usage_bytes_; |
| size_t unused_memory_usage_bytes_; |
| size_t resource_count_; |
| |
| typedef std::list<Resource*> ResourceList; |
| ResourceList unused_resources_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ResourcePool); |
| }; |
| |
| } // namespace cc |
| |
| #endif // CC_RESOURCES_RESOURCE_POOL_H_ |