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Diffstat (limited to 'Source/JavaScriptCore/bytecode/PolymorphicPutByIdList.h')
| -rw-r--r-- | Source/JavaScriptCore/bytecode/PolymorphicPutByIdList.h | 195 |
1 files changed, 0 insertions, 195 deletions
diff --git a/Source/JavaScriptCore/bytecode/PolymorphicPutByIdList.h b/Source/JavaScriptCore/bytecode/PolymorphicPutByIdList.h deleted file mode 100644 index d9fe2e7cf..000000000 --- a/Source/JavaScriptCore/bytecode/PolymorphicPutByIdList.h +++ /dev/null @@ -1,195 +0,0 @@ -/* - * Copyright (C) 2012 Apple 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: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. 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. - * - * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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 PolymorphicPutByIdList_h -#define PolymorphicPutByIdList_h - -#include <wtf/Platform.h> - -#if ENABLE(JIT) - -#include "CodeOrigin.h" -#include "MacroAssembler.h" -#include "Opcode.h" -#include "PutKind.h" -#include "Structure.h" -#include <wtf/Vector.h> - -namespace JSC { - -class CodeBlock; -struct StructureStubInfo; - -class PutByIdAccess { -public: - enum AccessType { - Invalid, - Transition, - Replace - }; - - PutByIdAccess() - : m_type(Invalid) - { - } - - static PutByIdAccess transition( - VM& vm, - JSCell* owner, - Structure* oldStructure, - Structure* newStructure, - StructureChain* chain, - PassRefPtr<JITStubRoutine> stubRoutine) - { - PutByIdAccess result; - result.m_type = Transition; - result.m_oldStructure.set(vm, owner, oldStructure); - result.m_newStructure.set(vm, owner, newStructure); - result.m_chain.set(vm, owner, chain); - result.m_stubRoutine = stubRoutine; - return result; - } - - static PutByIdAccess replace( - VM& vm, - JSCell* owner, - Structure* structure, - PassRefPtr<JITStubRoutine> stubRoutine) - { - PutByIdAccess result; - result.m_type = Replace; - result.m_oldStructure.set(vm, owner, structure); - result.m_stubRoutine = stubRoutine; - return result; - } - - static PutByIdAccess fromStructureStubInfo( - StructureStubInfo&, - MacroAssemblerCodePtr initialSlowPath); - - bool isSet() const { return m_type != Invalid; } - bool operator!() const { return !isSet(); } - - AccessType type() const { return m_type; } - - bool isTransition() const { return m_type == Transition; } - bool isReplace() const { return m_type == Replace; } - - Structure* oldStructure() const - { - // Using this instead of isSet() to make this assertion robust against the possibility - // of additional access types being added. - ASSERT(isTransition() || isReplace()); - - return m_oldStructure.get(); - } - - Structure* structure() const - { - ASSERT(isReplace()); - return m_oldStructure.get(); - } - - Structure* newStructure() const - { - ASSERT(isTransition()); - return m_newStructure.get(); - } - - StructureChain* chain() const - { - ASSERT(isTransition()); - return m_chain.get(); - } - - PassRefPtr<JITStubRoutine> stubRoutine() const - { - ASSERT(isTransition() || isReplace()); - return m_stubRoutine; - } - - bool visitWeak() const; - -private: - friend class CodeBlock; - - AccessType m_type; - WriteBarrier<Structure> m_oldStructure; - WriteBarrier<Structure> m_newStructure; - WriteBarrier<StructureChain> m_chain; - RefPtr<JITStubRoutine> m_stubRoutine; -}; - -class PolymorphicPutByIdList { - WTF_MAKE_FAST_ALLOCATED; -public: - // Initialize from a stub info; this will place one element in the list and it will - // be created by converting the stub info's put by id access information into our - // PutByIdAccess. - PolymorphicPutByIdList( - PutKind, - StructureStubInfo&, - MacroAssemblerCodePtr initialSlowPath); - - // Either creates a new polymorphic put list, or returns the one that is already - // in place. - static PolymorphicPutByIdList* from( - PutKind, - StructureStubInfo&, - MacroAssemblerCodePtr initialSlowPath); - - ~PolymorphicPutByIdList(); - - MacroAssemblerCodePtr currentSlowPathTarget() const - { - return m_list.last().stubRoutine()->code().code(); - } - - void addAccess(const PutByIdAccess&); - - bool isEmpty() const { return m_list.isEmpty(); } - unsigned size() const { return m_list.size(); } - bool isFull() const; - bool isAlmostFull() const; // True if adding an element would make isFull() true. - const PutByIdAccess& at(unsigned i) const { return m_list[i]; } - const PutByIdAccess& operator[](unsigned i) const { return m_list[i]; } - - PutKind kind() const { return m_kind; } - - bool visitWeak() const; - -private: - friend class CodeBlock; - - Vector<PutByIdAccess, 2> m_list; - PutKind m_kind; -}; - -} // namespace JSC - -#endif // ENABLE(JIT) - -#endif // PolymorphicPutByIdList_h - |