1 // Copyright 2013 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 WEBKIT_CHILD_WEB_DISCARDABLE_MEMORY_IMPL_H_ 6 #define WEBKIT_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 #include "webkit/child/webkit_child_export.h" 13 14 namespace blink { 15 class WebDiscardableMemory; 16 } 17 18 namespace webkit_glue { 19 20 // Implementation of WebDiscardableMemory that is responsible for allocating 21 // discardable memory. 22 class WEBKIT_CHILD_EXPORT WebDiscardableMemoryImpl NON_EXPORTED_BASE(public blink::WebDiscardableMemory)23 : NON_EXPORTED_BASE(public blink::WebDiscardableMemory) { 24 public: 25 virtual ~WebDiscardableMemoryImpl(); 26 27 static scoped_ptr<WebDiscardableMemoryImpl> CreateLockedMemory(size_t size); 28 29 // blink::WebDiscardableMemory: 30 virtual bool lock(); 31 virtual void unlock(); 32 virtual void* data(); 33 34 private: 35 WebDiscardableMemoryImpl(scoped_ptr<base::DiscardableMemory> memory); 36 37 scoped_ptr<base::DiscardableMemory> discardable_; 38 39 DISALLOW_COPY_AND_ASSIGN(WebDiscardableMemoryImpl); 40 }; 41 42 } // namespace webkit_glue 43 44 #endif // WEBKIT_CHILD_WEB_DISCARDABLE_MEMORY_IMPL_H_ 45