mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2024-11-23 04:09:40 +00:00
118 lines
3.4 KiB
C++
118 lines
3.4 KiB
C++
/*
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* Copyright (C) 2015-2018 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#if ENABLE(JIT)
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#include "CallEdge.h"
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#include "CallVariant.h"
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#include "GCAwareJITStubRoutine.h"
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#include <wtf/Noncopyable.h>
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#include <wtf/UniqueArray.h>
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#include <wtf/Vector.h>
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namespace JSC {
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class CallLinkInfo;
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class PolymorphicCallNode : public PackedRawSentinelNode<PolymorphicCallNode> {
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WTF_MAKE_NONCOPYABLE(PolymorphicCallNode);
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public:
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PolymorphicCallNode(CallLinkInfo* info)
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: m_callLinkInfo(info)
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{
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}
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~PolymorphicCallNode();
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void unlink(VM&);
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bool hasCallLinkInfo(CallLinkInfo* info) { return m_callLinkInfo.get() == info; }
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void clearCallLinkInfo();
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private:
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PackedPtr<CallLinkInfo> m_callLinkInfo;
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};
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class PolymorphicCallCase {
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public:
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PolymorphicCallCase()
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: m_codeBlock(nullptr)
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{
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}
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PolymorphicCallCase(CallVariant variant, CodeBlock* codeBlock)
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: m_variant(variant)
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, m_codeBlock(codeBlock)
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{
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}
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CallVariant variant() const { return m_variant; }
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CodeBlock* codeBlock() const { return m_codeBlock; }
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void dump(PrintStream&) const;
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private:
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CallVariant m_variant;
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CodeBlock* m_codeBlock;
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};
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class PolymorphicCallStubRoutine final : public GCAwareJITStubRoutine {
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public:
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PolymorphicCallStubRoutine(
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const MacroAssemblerCodeRef<JITStubRoutinePtrTag>&, VM&, const JSCell* owner,
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CallFrame* callerFrame, CallLinkInfo&, const Vector<PolymorphicCallCase>&,
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UniqueArray<uint32_t>&& fastCounts);
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~PolymorphicCallStubRoutine() final;
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CallVariantList variants() const;
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bool hasEdges() const;
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CallEdgeList edges() const;
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void clearCallNodesFor(CallLinkInfo*);
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template<typename Functor>
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void forEachDependentCell(const Functor& functor)
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{
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for (auto& variant : m_variants)
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functor(variant.get());
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}
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bool visitWeak(VM&) final;
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private:
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void markRequiredObjectsInternal(SlotVisitor&) final;
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Vector<WriteBarrier<JSCell>, 2> m_variants;
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UniqueArray<uint32_t> m_fastCounts;
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Bag<PolymorphicCallNode> m_callNodes;
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};
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} // namespace JSC
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#endif // ENABLE(JIT)
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