15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 2c0e19a689c8ac22cdc96b291a8d33a5d3b0b34a4Torne (Richard Coles) * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2013 Apple Inc. All rights reserved. 35c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 45c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * This library is free software; you can redistribute it and/or 55c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * modify it under the terms of the GNU Library General Public 65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * License as published by the Free Software Foundation; either 75c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * version 2 of the License, or (at your option) any later version. 85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 95c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * This library is distributed in the hope that it will be useful, 105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * but WITHOUT ANY WARRANTY; without even the implied warranty of 115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Library General Public License for more details. 135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * You should have received a copy of the GNU Library General Public License 155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * along with this library; see the file COPYING.LIB. If not, write to 165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Boston, MA 02110-1301, USA. 185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)// RefPtr and PassRefPtr are documented at http://webkit.org/coding/RefPtr.html 225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 235c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#ifndef WTF_RefPtr_h 245c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define WTF_RefPtr_h 255c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#include <algorithm> 270019e4eead4d990e4304c54a9028aca9122fb256Ben Murdoch#include "wtf/HashTableDeletedValueType.h" 28591b958dee2cf159d33a0b931e6231072eaf38d5Ben Murdoch#include "wtf/PassRefPtr.h" 2909380295ba73501a205346becac22c6978e4671dTorne (Richard Coles)#include "wtf/RawPtr.h" 305c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)namespace WTF { 325c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 335c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> class PassRefPtr; 345c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 355c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> class RefPtr { 36d5428f32f5d1719f774f62e19147104ca245a3abTorne (Richard Coles) WTF_DISALLOW_CONSTRUCTION_FROM_ZERO(RefPtr); 37d5428f32f5d1719f774f62e19147104ca245a3abTorne (Richard Coles) WTF_DISALLOW_ZERO_ASSIGNMENT(RefPtr); 385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) public: 395c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ALWAYS_INLINE RefPtr() : m_ptr(0) { } 40d5428f32f5d1719f774f62e19147104ca245a3abTorne (Richard Coles) ALWAYS_INLINE RefPtr(std::nullptr_t) : m_ptr(0) { } 415c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ALWAYS_INLINE RefPtr(T* ptr) : m_ptr(ptr) { refIfNotNull(ptr); } 4209380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) template<typename U> RefPtr(const RawPtr<U>& ptr, EnsurePtrConvertibleArgDecl(U, T)) : m_ptr(ptr.get()) { refIfNotNull(m_ptr); } 431e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) ALWAYS_INLINE explicit RefPtr(T& ref) : m_ptr(&ref) { m_ptr->ref(); } 445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ALWAYS_INLINE RefPtr(const RefPtr& o) : m_ptr(o.m_ptr) { refIfNotNull(m_ptr); } 4523e46e0f045bc1935a09565578b448d36cfc5b8cBen Murdoch template<typename U> RefPtr(const RefPtr<U>& o, EnsurePtrConvertibleArgDecl(U, T)) : m_ptr(o.get()) { refIfNotNull(m_ptr); } 465c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 47197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch#if COMPILER_SUPPORTS(CXX_RVALUE_REFERENCES) 48197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch RefPtr(RefPtr&& o) : m_ptr(o.m_ptr) { o.m_ptr = 0; } 49197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch RefPtr& operator=(RefPtr&&); 50197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch#endif 51197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch 525c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // See comments in PassRefPtr.h for an explanation of why this takes a const reference. 5323e46e0f045bc1935a09565578b448d36cfc5b8cBen Murdoch template<typename U> RefPtr(const PassRefPtr<U>&, EnsurePtrConvertibleArgDecl(U, T)); 545c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 555c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // Hash table deleted values, which are only constructed and never copied or destroyed. 565c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) RefPtr(HashTableDeletedValueType) : m_ptr(hashTableDeletedValue()) { } 575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) bool isHashTableDeletedValue() const { return m_ptr == hashTableDeletedValue(); } 585c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ALWAYS_INLINE ~RefPtr() { derefIfNotNull(m_ptr); } 605c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 6109380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) ALWAYS_INLINE T* get() const { return m_ptr; } 6202772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 635c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void clear(); 645c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PassRefPtr<T> release() { PassRefPtr<T> tmp = adoptRef(m_ptr); m_ptr = 0; return tmp; } 655c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 665c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) T& operator*() const { return *m_ptr; } 675c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ALWAYS_INLINE T* operator->() const { return m_ptr; } 6802772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 695c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) bool operator!() const { return !m_ptr; } 7002772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 715c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // This conversion operator allows implicit conversion to bool but not to other integer types. 725c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) typedef T* (RefPtr::*UnspecifiedBoolType); 735c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) operator UnspecifiedBoolType() const { return m_ptr ? &RefPtr::m_ptr : 0; } 7402772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 755c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) RefPtr& operator=(const RefPtr&); 765c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) RefPtr& operator=(T*); 775c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) RefPtr& operator=(const PassRefPtr<T>&); 785c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) RefPtr& operator=(std::nullptr_t) { clear(); return *this; } 79d5428f32f5d1719f774f62e19147104ca245a3abTorne (Richard Coles) 808abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) template<typename U> RefPtr<T>& operator=(const RefPtr<U>&); 818abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) template<typename U> RefPtr<T>& operator=(const PassRefPtr<U>&); 8209380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) template<typename U> RefPtr<T>& operator=(const RawPtr<U>&); 835c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 845c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void swap(RefPtr&); 855c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 865c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) static T* hashTableDeletedValue() { return reinterpret_cast<T*>(-1); } 875c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 885c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) private: 895c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) T* m_ptr; 905c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) }; 9102772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 9223e46e0f045bc1935a09565578b448d36cfc5b8cBen Murdoch template<typename T> template<typename U> inline RefPtr<T>::RefPtr(const PassRefPtr<U>& o, EnsurePtrConvertibleArgDefn(U, T)) 935c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) : m_ptr(o.leakRef()) 945c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 955c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 965c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 975c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> inline void RefPtr<T>::clear() 985c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 995c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) T* ptr = m_ptr; 1005c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_ptr = 0; 1015c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) derefIfNotNull(ptr); 1025c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1035c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 104c0e19a689c8ac22cdc96b291a8d33a5d3b0b34a4Torne (Richard Coles) template<typename T> inline RefPtr<T>& RefPtr<T>::operator=(const RefPtr& o) 1055c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 106c0e19a689c8ac22cdc96b291a8d33a5d3b0b34a4Torne (Richard Coles) RefPtr ptr = o; 107c0e19a689c8ac22cdc96b291a8d33a5d3b0b34a4Torne (Richard Coles) swap(ptr); 1085c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return *this; 1095c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 11002772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 111197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch#if COMPILER_SUPPORTS(CXX_RVALUE_REFERENCES) 112197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch template<typename T> inline RefPtr<T>& RefPtr<T>::operator=(RefPtr&& o) 113197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch { 114197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch // FIXME: Instead of explicitly casting to RefPtr&& here, we should use std::move, but that requires us to 115197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch // have a standard library that supports move semantics. 116197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch RefPtr ptr = static_cast<RefPtr&&>(o); 117197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch swap(ptr); 118197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch return *this; 119197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch } 120197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch#endif 121197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch 1228abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) template<typename T> template<typename U> inline RefPtr<T>& RefPtr<T>::operator=(const RefPtr<U>& o) 1235c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 124c0e19a689c8ac22cdc96b291a8d33a5d3b0b34a4Torne (Richard Coles) RefPtr ptr = o; 125c0e19a689c8ac22cdc96b291a8d33a5d3b0b34a4Torne (Richard Coles) swap(ptr); 1265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return *this; 1275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 12802772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 1295c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> inline RefPtr<T>& RefPtr<T>::operator=(T* optr) 1305c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 131c0e19a689c8ac22cdc96b291a8d33a5d3b0b34a4Torne (Richard Coles) RefPtr ptr = optr; 132c0e19a689c8ac22cdc96b291a8d33a5d3b0b34a4Torne (Richard Coles) swap(ptr); 1335c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return *this; 1345c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1355c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1365c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> inline RefPtr<T>& RefPtr<T>::operator=(const PassRefPtr<T>& o) 1375c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 138c0e19a689c8ac22cdc96b291a8d33a5d3b0b34a4Torne (Richard Coles) RefPtr ptr = o; 139c0e19a689c8ac22cdc96b291a8d33a5d3b0b34a4Torne (Richard Coles) swap(ptr); 1405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return *this; 1415c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1425c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1438abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) template<typename T> template<typename U> inline RefPtr<T>& RefPtr<T>::operator=(const PassRefPtr<U>& o) 1445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 145c0e19a689c8ac22cdc96b291a8d33a5d3b0b34a4Torne (Richard Coles) RefPtr ptr = o; 146c0e19a689c8ac22cdc96b291a8d33a5d3b0b34a4Torne (Richard Coles) swap(ptr); 1475c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return *this; 1485c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1495c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 15009380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) template<typename T> template<typename U> inline RefPtr<T>& RefPtr<T>::operator=(const RawPtr<U>& o) 15109380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) { 15209380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) RefPtr ptr = o.get(); 15309380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) swap(ptr); 15409380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) return *this; 15509380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) } 15609380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) 157c0e19a689c8ac22cdc96b291a8d33a5d3b0b34a4Torne (Richard Coles) template<class T> inline void RefPtr<T>::swap(RefPtr& o) 1585c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 1595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) std::swap(m_ptr, o.m_ptr); 1605c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1615c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1625c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<class T> inline void swap(RefPtr<T>& a, RefPtr<T>& b) 1635c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 1645c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) a.swap(b); 1655c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1665c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1675c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T, typename U> inline bool operator==(const RefPtr<T>& a, const RefPtr<U>& b) 16802772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch { 16902772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch return a.get() == b.get(); 1705c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1715c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1725c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T, typename U> inline bool operator==(const RefPtr<T>& a, U* b) 17302772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch { 17402772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch return a.get() == b; 1755c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 17602772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 17702772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch template<typename T, typename U> inline bool operator==(T* a, const RefPtr<U>& b) 1785c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 17902772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch return a == b.get(); 1805c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 18102772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 1825c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T, typename U> inline bool operator!=(const RefPtr<T>& a, const RefPtr<U>& b) 18302772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch { 18402772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch return a.get() != b.get(); 1855c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1865c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1875c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T, typename U> inline bool operator!=(const RefPtr<T>& a, U* b) 1885c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 18902772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch return a.get() != b; 1905c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 1915c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1925c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T, typename U> inline bool operator!=(T* a, const RefPtr<U>& b) 19302772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch { 19402772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch return a != b.get(); 1955c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 19602772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 1971e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) template<typename T, typename U> inline RefPtr<T> static_pointer_cast(const RefPtr<U>& p) 1981e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) { 1991e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) return RefPtr<T>(static_cast<T*>(p.get())); 2005c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 2015c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2025c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) template<typename T> inline T* getPtr(const RefPtr<T>& p) 2035c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 2045c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return p.get(); 2055c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 2065c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 207d5428f32f5d1719f774f62e19147104ca245a3abTorne (Richard Coles) template<typename T> class RefPtrValuePeeker { 208d5428f32f5d1719f774f62e19147104ca245a3abTorne (Richard Coles) public: 209d5428f32f5d1719f774f62e19147104ca245a3abTorne (Richard Coles) ALWAYS_INLINE RefPtrValuePeeker(T* p): m_ptr(p) { } 210d5428f32f5d1719f774f62e19147104ca245a3abTorne (Richard Coles) ALWAYS_INLINE RefPtrValuePeeker(std::nullptr_t): m_ptr(0) { } 211d5428f32f5d1719f774f62e19147104ca245a3abTorne (Richard Coles) template<typename U> RefPtrValuePeeker(const RefPtr<U>& p): m_ptr(p.get()) { } 212d5428f32f5d1719f774f62e19147104ca245a3abTorne (Richard Coles) template<typename U> RefPtrValuePeeker(const PassRefPtr<U>& p): m_ptr(p.get()) { } 213d5428f32f5d1719f774f62e19147104ca245a3abTorne (Richard Coles) 214d5428f32f5d1719f774f62e19147104ca245a3abTorne (Richard Coles) ALWAYS_INLINE operator T*() const { return m_ptr; } 215d5428f32f5d1719f774f62e19147104ca245a3abTorne (Richard Coles) private: 216d5428f32f5d1719f774f62e19147104ca245a3abTorne (Richard Coles) T* m_ptr; 217d5428f32f5d1719f774f62e19147104ca245a3abTorne (Richard Coles) }; 218d5428f32f5d1719f774f62e19147104ca245a3abTorne (Richard Coles) 2195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} // namespace WTF 2205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)using WTF::RefPtr; 2225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)using WTF::static_pointer_cast; 2235c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2245c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif // WTF_RefPtr_h 225