| /* |
| * Copyright (C) 2012 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef MemoryInstrumentation_h |
| #define MemoryInstrumentation_h |
| |
| #include <wtf/Forward.h> |
| #include <wtf/OwnPtr.h> |
| #include <wtf/RefPtr.h> |
| |
| namespace WebCore { |
| |
| class MemoryObjectInfo; |
| |
| class MemoryInstrumentation { |
| public: |
| virtual ~MemoryInstrumentation() { } |
| |
| enum ObjectType { |
| Other, |
| DOM, |
| CSS, |
| LastTypeEntry |
| }; |
| |
| template <typename T> void reportInstrumentedObject(const T&); |
| template <typename T> void reportObject(const T&) { } |
| template <typename T> void reportInstrumentedPointer(const T*); |
| template <typename T> void reportPointer(const T* object, ObjectType objectType) |
| { |
| if (!object || visited(object)) |
| return; |
| countObjectSize(objectType, sizeof(T)); |
| } |
| |
| private: |
| friend class MemoryObjectInfo; |
| |
| virtual void reportString(ObjectType, const String&) = 0; |
| virtual void countObjectSize(ObjectType, size_t) = 0; |
| virtual bool visited(const void*) = 0; |
| }; |
| |
| class MemoryObjectInfo { |
| public: |
| MemoryObjectInfo(MemoryInstrumentation* memoryInstrumentation) |
| : m_memoryInstrumentation(memoryInstrumentation) |
| , m_objectType(MemoryInstrumentation::Other) |
| , m_objectSize(0) |
| { } |
| |
| template <typename P> |
| void reportInstrumentedPointer(const P* memberPointer) |
| { |
| m_memoryInstrumentation->reportInstrumentedPointer(memberPointer); |
| } |
| |
| template <typename P> |
| void reportPointer(const P* pointer, MemoryInstrumentation::ObjectType objectType) |
| { |
| m_memoryInstrumentation->reportPointer(pointer, objectType); |
| } |
| |
| template <typename T> |
| void reportInstrumentedObject(const T& memberObject) |
| { |
| m_memoryInstrumentation->reportInstrumentedObject(memberObject); |
| } |
| |
| template <typename T> |
| void reportObject(const T& object) { m_memoryInstrumentation->reportObject(object); } |
| |
| template <typename T> |
| void reportObjectInfo(const T*, MemoryInstrumentation::ObjectType objectType) |
| { |
| if (m_objectType != MemoryInstrumentation::Other) |
| return; |
| m_objectType = objectType; |
| m_objectSize = sizeof(T); |
| } |
| |
| void reportString(const String& string) |
| { |
| m_memoryInstrumentation->reportString(objectType(), string); |
| } |
| |
| MemoryInstrumentation::ObjectType objectType() const { return m_objectType; } |
| size_t objectSize() const { return m_objectSize; } |
| |
| private: |
| MemoryInstrumentation* m_memoryInstrumentation; |
| MemoryInstrumentation::ObjectType m_objectType; |
| size_t m_objectSize; |
| }; |
| |
| template <typename T> |
| void MemoryInstrumentation::reportInstrumentedPointer(const T* const object) |
| { |
| if (!object || visited(object)) |
| return; |
| MemoryObjectInfo memoryObjectInfo(this); |
| object->reportMemoryUsage(&memoryObjectInfo); |
| countObjectSize(memoryObjectInfo.objectType(), memoryObjectInfo.objectSize()); |
| } |
| |
| template<typename T> |
| void MemoryInstrumentation::reportInstrumentedObject(const T& object) |
| { |
| if (visited(&object)) |
| return; |
| MemoryObjectInfo memoryObjectInfo(this); |
| object.reportMemoryUsage(&memoryObjectInfo); |
| } |
| |
| } // namespace WebCore |
| |
| #endif // !defined(MemoryInstrumentation_h) |