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/*
* Copyright (C) 2013-2021 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.
*/
#pragma once
#include "CompilationResult.h"
#include "DFGDesiredGlobalProperties.h"
#include "DFGDesiredIdentifiers.h"
#include "DFGDesiredTransitions.h"
#include "DFGDesiredWatchpoints.h"
#include "DFGDesiredWeakReferences.h"
#include "DFGFinalizer.h"
#include "DFGJITCode.h"
#include "DeferredCompilationCallback.h"
#include "JITPlan.h"
#include "Operands.h"
#include "ProfilerCompilation.h"
#include "RecordedStatuses.h"
#include <wtf/HashMap.h>
#include <wtf/Lock.h>
#include <wtf/ThreadSafeRefCounted.h>
namespace JSC {
class CodeBlock;
namespace DFG {
class ThreadData;
class JITData;
#if ENABLE(DFG_JIT)
class Plan final : public JITPlan {
using Base = JITPlan;
public:
Plan(
CodeBlock* codeBlockToCompile, CodeBlock* profiledDFGCodeBlock,
JITCompilationMode, BytecodeIndex osrEntryBytecodeIndex,
Operands<std::optional<JSValue>>&& mustHandleValues);
~Plan();
size_t codeSize() const final;
void finalizeInGC() final;
CompilationResult finalize() override;
void notifyReady() final;
void cancel() final;
bool isKnownToBeLiveAfterGC() final;
bool isKnownToBeLiveDuringGC(AbstractSlotVisitor&) final;
bool iterateCodeBlocksForGC(AbstractSlotVisitor&, NOESCAPE const Function<void(CodeBlock*)>&) final;
bool checkLivenessAndVisitChildren(AbstractSlotVisitor&) final;
bool canTierUpAndOSREnter() const { return !m_tierUpAndOSREnterBytecodes.isEmpty(); }
void cleanMustHandleValuesIfNecessary();
BytecodeIndex osrEntryBytecodeIndex() const { return m_osrEntryBytecodeIndex; }
const Operands<std::optional<JSValue>>& mustHandleValues() const { return m_mustHandleValues; }
Profiler::Compilation* compilation() const { return m_compilation.get(); }
Finalizer* finalizer() const { return m_finalizer.get(); }
void setFinalizer(std::unique_ptr<Finalizer>&& finalizer) { m_finalizer = WTFMove(finalizer); }
RefPtr<InlineCallFrameSet> inlineCallFrames() const { return m_inlineCallFrames; }
DesiredWatchpoints& watchpoints() { return m_watchpoints; }
DesiredIdentifiers& identifiers() { return m_identifiers; }
DesiredWeakReferences& weakReferences() { return m_weakReferences; }
DesiredTransitions& transitions() { return m_transitions; }
RecordedStatuses& recordedStatuses() { return *m_recordedStatuses.get(); }
bool willTryToTierUp() const { return m_willTryToTierUp; }
void setWillTryToTierUp(bool willTryToTierUp) { m_willTryToTierUp = willTryToTierUp; }
UncheckedKeyHashMap<BytecodeIndex, FixedVector<BytecodeIndex>>& tierUpInLoopHierarchy() { return m_tierUpInLoopHierarchy; }
Vector<BytecodeIndex>& tierUpAndOSREnterBytecodes() { return m_tierUpAndOSREnterBytecodes; }
DeferredCompilationCallback* callback() const { return m_callback.get(); }
void setCallback(Ref<DeferredCompilationCallback>&& callback) { m_callback = WTFMove(callback); }
std::unique_ptr<JITData> tryFinalizeJITData(const DFG::JITCode&);
private:
CompilationPath compileInThreadImpl() override;
void finalizeInThread(Ref<JSC::JITCode>);
bool isStillValidCodeBlock();
bool reallyAdd(CommonData*);
// These can be raw pointers because we visit them during every GC in checkLivenessAndVisitChildren.
CodeBlock* m_profiledDFGCodeBlock;
Operands<std::optional<JSValue>> m_mustHandleValues;
bool m_mustHandleValuesMayIncludeGarbage WTF_GUARDED_BY_LOCK(m_mustHandleValueCleaningLock) { true };
Lock m_mustHandleValueCleaningLock;
bool m_willTryToTierUp { false };
const BytecodeIndex m_osrEntryBytecodeIndex;
RefPtr<Profiler::Compilation> m_compilation;
std::unique_ptr<Finalizer> m_finalizer;
RefPtr<InlineCallFrameSet> m_inlineCallFrames;
DesiredWatchpoints m_watchpoints;
DesiredIdentifiers m_identifiers;
DesiredWeakReferences m_weakReferences;
DesiredTransitions m_transitions;
std::unique_ptr<RecordedStatuses> m_recordedStatuses;
UncheckedKeyHashMap<BytecodeIndex, FixedVector<BytecodeIndex>> m_tierUpInLoopHierarchy;
Vector<BytecodeIndex> m_tierUpAndOSREnterBytecodes;
RefPtr<DeferredCompilationCallback> m_callback;
};
#endif // ENABLE(DFG_JIT)
} } // namespace JSC::DFG
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