101 lines
3.2 KiB
C++
101 lines
3.2 KiB
C++
/*
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* Copyright (C) 2021 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 "CompilationResult.h"
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#include "JITCompilationKey.h"
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#include "JITCompilationMode.h"
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#include "JITPlanStage.h"
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#include "ReleaseHeapAccessScope.h"
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#include <wtf/MonotonicTime.h>
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#include <wtf/ThreadSafeRefCounted.h>
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namespace JSC {
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class AbstractSlotVisitor;
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class CodeBlock;
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class JITWorklistThread;
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class VM;
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class JITPlan : public ThreadSafeRefCounted<JITPlan> {
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protected:
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JITPlan(JITCompilationMode, CodeBlock*);
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public:
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virtual ~JITPlan() { }
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VM* vm() const { return m_vm; }
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CodeBlock* codeBlock() const { return m_codeBlock; }
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JITWorklistThread* thread() const { return m_thread; }
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JITCompilationMode mode() const { return m_mode; }
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JITPlanStage stage() const { return m_stage; }
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bool isFTL() const { return ::JSC::isFTL(m_mode); }
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enum class Tier { Baseline = 0, DFG = 1, FTL = 2, Count = 3 };
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Tier tier() const;
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JITCompilationKey key();
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void compileInThread(JITWorklistThread*);
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virtual size_t codeSize() const = 0;
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virtual CompilationResult finalize() = 0;
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virtual void finalizeInGC() { }
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void notifyCompiling();
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virtual void notifyReady();
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virtual void cancel();
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virtual bool isKnownToBeLiveAfterGC();
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virtual bool isKnownToBeLiveDuringGC(AbstractSlotVisitor&);
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virtual bool iterateCodeBlocksForGC(AbstractSlotVisitor&, const Function<void(CodeBlock*)>&);
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virtual bool checkLivenessAndVisitChildren(AbstractSlotVisitor&);
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protected:
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bool computeCompileTimes() const;
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bool reportCompileTimes() const;
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enum CompilationPath { FailPath, BaselinePath, DFGPath, FTLPath, CancelPath };
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virtual CompilationPath compileInThreadImpl() = 0;
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JITPlanStage m_stage { JITPlanStage::Preparing };
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JITCompilationMode m_mode;
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MonotonicTime m_timeBeforeFTL;
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VM* m_vm;
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CodeBlock* m_codeBlock;
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JITWorklistThread* m_thread { nullptr };
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};
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} // namespace JSC
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#endif // ENABLE(JIT)
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