1 files changed, 76 insertions, 0 deletions
diff --git a/chromium/cc/resources/resource_pool.h b/chromium/cc/resources/resource_pool.h
new file mode 100644
index 00000000000..309bf33f30b
--- /dev/null
+++ b/chromium/cc/resources/resource_pool.h
@@ -0,0 +1,76 @@
+// 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"
+
+namespace cc {
+class ResourceProvider;
+
+class CC_EXPORT ResourcePool {
+ public:
+  class CC_EXPORT Resource : public cc::Resource {
+   public:
+    Resource(ResourceProvider* resource_provider,
+             gfx::Size size,
+             GLenum 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,
+                                                     GLenum format);
+  void ReleaseResource(scoped_ptr<ResourcePool::Resource>);
+
+  void SetMemoryUsageLimits(size_t max_memory_usage_bytes,
+                            size_t max_unused_memory_usage_bytes,
+                            size_t num_resources_limit);
+
+  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 NumResources() const { return resources_.size(); }
+
+ protected:
+  explicit ResourcePool(ResourceProvider* resource_provider);
+
+  bool MemoryUsageTooHigh();
+
+ private:
+  ResourceProvider* resource_provider_;
+  size_t max_memory_usage_bytes_;
+  size_t max_unused_memory_usage_bytes_;
+  size_t memory_usage_bytes_;
+  size_t unused_memory_usage_bytes_;
+  size_t num_resources_limit_;
+
+  typedef std::list<Resource*> ResourceList;
+  ResourceList resources_;
+
+  DISALLOW_COPY_AND_ASSIGN(ResourcePool);
+};
+
+}  // namespace cc
+
+#endif  // CC_RESOURCES_RESOURCE_POOL_H_