1 // Copyright 2014 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 CONTENT_CHILD_WEB_DISCARDABLE_MEMORY_IMPL_H_ 6 #define CONTENT_CHILD_WEB_DISCARDABLE_MEMORY_IMPL_H_ 7 8 #include "base/basictypes.h" 9 #include "base/memory/discardable_memory.h" 10 #include "base/memory/scoped_ptr.h" 11 #include "third_party/WebKit/public/platform/WebDiscardableMemory.h" 12 13 namespace blink { 14 class WebDiscardableMemory; 15 } 16 17 namespace content { 18 19 // Implementation of WebDiscardableMemory that is responsible for allocating 20 // discardable memory. 21 class WebDiscardableMemoryImpl : public blink::WebDiscardableMemory { 22 public: 23 virtual ~WebDiscardableMemoryImpl(); 24 25 static scoped_ptr<WebDiscardableMemoryImpl> CreateLockedMemory(size_t size); 26 27 // blink::WebDiscardableMemory: 28 virtual bool lock(); 29 virtual void unlock(); 30 virtual void* data(); 31 32 private: 33 WebDiscardableMemoryImpl(scoped_ptr<base::DiscardableMemory> memory); 34 35 scoped_ptr<base::DiscardableMemory> discardable_; 36 37 DISALLOW_COPY_AND_ASSIGN(WebDiscardableMemoryImpl); 38 }; 39 40 } // namespace content 41 42 #endif // CONTENT_CHILD_WEB_DISCARDABLE_MEMORY_IMPL_H_ 43