mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2025-04-11 11:20:43 +00:00
134 lines
4.2 KiB
C++
134 lines
4.2 KiB
C++
/*
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* Copyright (C) 2013-2017 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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#include "CompilationResult.h"
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#include "DFGCompilationKey.h"
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#include "DFGCompilationMode.h"
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#include "DFGDesiredIdentifiers.h"
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#include "DFGDesiredTransitions.h"
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#include "DFGDesiredWatchpoints.h"
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#include "DFGDesiredWeakReferences.h"
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#include "DFGFinalizer.h"
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#include "DeferredCompilationCallback.h"
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#include "Operands.h"
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#include "ProfilerCompilation.h"
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#include <wtf/HashMap.h>
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#include <wtf/ThreadSafeRefCounted.h>
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namespace JSC {
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class CodeBlock;
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class SlotVisitor;
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namespace DFG {
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class ThreadData;
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#if ENABLE(DFG_JIT)
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struct Plan : public ThreadSafeRefCounted<Plan> {
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Plan(
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CodeBlock* codeBlockToCompile, CodeBlock* profiledDFGCodeBlock,
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CompilationMode, unsigned osrEntryBytecodeIndex,
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const Operands<JSValue>& mustHandleValues);
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~Plan();
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void compileInThread(ThreadData*);
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CompilationResult finalizeWithoutNotifyingCallback();
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void finalizeAndNotifyCallback();
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void notifyCompiling();
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void notifyReady();
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CompilationKey key();
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void markCodeBlocks(SlotVisitor&);
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template<typename Func>
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void iterateCodeBlocksForGC(const Func&);
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void checkLivenessAndVisitChildren(SlotVisitor&);
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bool isKnownToBeLiveDuringGC();
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void cancel();
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bool canTierUpAndOSREnter() const { return !tierUpAndOSREnterBytecodes.isEmpty(); }
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void cleanMustHandleValuesIfNecessary();
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// Warning: pretty much all of the pointer fields in this object get nulled by cancel(). So, if
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// you're writing code that is callable on the cancel path, be sure to null check everything!
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VM* vm;
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// These can be raw pointers because we visit them during every GC in checkLivenessAndVisitChildren.
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CodeBlock* codeBlock;
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CodeBlock* profiledDFGCodeBlock;
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CompilationMode mode;
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const unsigned osrEntryBytecodeIndex;
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Operands<JSValue> mustHandleValues;
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bool mustHandleValuesMayIncludeGarbage { true };
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Lock mustHandleValueCleaningLock;
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ThreadData* threadData;
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RefPtr<Profiler::Compilation> compilation;
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std::unique_ptr<Finalizer> finalizer;
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RefPtr<InlineCallFrameSet> inlineCallFrames;
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DesiredWatchpoints watchpoints;
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DesiredIdentifiers identifiers;
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DesiredWeakReferences weakReferences;
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DesiredTransitions transitions;
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bool willTryToTierUp { false };
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HashMap<unsigned, Vector<unsigned>> tierUpInLoopHierarchy;
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Vector<unsigned> tierUpAndOSREnterBytecodes;
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enum Stage { Preparing, Compiling, Ready, Cancelled };
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Stage stage;
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RefPtr<DeferredCompilationCallback> callback;
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private:
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bool computeCompileTimes() const;
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bool reportCompileTimes() const;
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enum CompilationPath { FailPath, DFGPath, FTLPath, CancelPath };
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CompilationPath compileInThreadImpl();
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bool isStillValid();
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void reallyAdd(CommonData*);
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double m_timeBeforeFTL;
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};
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#endif // ENABLE(DFG_JIT)
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} } // namespace JSC::DFG
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