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/*
* Copyright (C) 2013-2015 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 DFGPlan_h
#define DFGPlan_h
#include "CompilationResult.h"
#include "DFGCompilationKey.h"
#include "DFGCompilationMode.h"
#include "DFGDesiredIdentifiers.h"
#include "DFGDesiredTransitions.h"
#include "DFGDesiredWatchpoints.h"
#include "DFGDesiredWeakReferences.h"
#include "DFGFinalizer.h"
#include "DeferredCompilationCallback.h"
#include "Operands.h"
#include "ProfilerCompilation.h"
#include <wtf/HashMap.h>
#include <wtf/ThreadSafeRefCounted.h>
#include <wtf/text/CString.h>
namespace JSC {
class CodeBlock;
class SlotVisitor;
namespace DFG {
class LongLivedState;
class ThreadData;
#if ENABLE(DFG_JIT)
struct Plan : public ThreadSafeRefCounted<Plan> {
Plan(
CodeBlock* codeBlockToCompile, CodeBlock* profiledDFGCodeBlock,
CompilationMode, unsigned osrEntryBytecodeIndex,
const Operands<JSValue>& mustHandleValues);
~Plan();
void compileInThread(LongLivedState&, ThreadData*);
CompilationResult finalizeWithoutNotifyingCallback();
void finalizeAndNotifyCallback();
void notifyCompiling();
void notifyCompiled();
void notifyReady();
CompilationKey key();
void rememberCodeBlocks();
void checkLivenessAndVisitChildren(SlotVisitor&);
bool isKnownToBeLiveDuringGC();
void cancel();
VM& vm;
// These can be raw pointers because we visit them during every GC in checkLivenessAndVisitChildren.
CodeBlock* codeBlock;
CodeBlock* profiledDFGCodeBlock;
CompilationMode mode;
const unsigned osrEntryBytecodeIndex;
Operands<JSValue> mustHandleValues;
ThreadData* threadData;
RefPtr<Profiler::Compilation> compilation;
std::unique_ptr<Finalizer> finalizer;
RefPtr<InlineCallFrameSet> inlineCallFrames;
DesiredWatchpoints watchpoints;
DesiredIdentifiers identifiers;
DesiredWeakReferences weakReferences;
DesiredTransitions transitions;
bool willTryToTierUp { false };
bool canTierUpAndOSREnter { false };
enum Stage { Preparing, Compiling, Compiled, Ready, Cancelled };
Stage stage;
RefPtr<DeferredCompilationCallback> callback;
JS_EXPORT_PRIVATE static HashMap<CString, double> compileTimeStats();
private:
bool computeCompileTimes() const;
bool reportCompileTimes() const;
enum CompilationPath { FailPath, DFGPath, FTLPath, CancelPath };
CompilationPath compileInThreadImpl(LongLivedState&);
bool isStillValid();
void reallyAdd(CommonData*);
double m_timeBeforeFTL;
};
#else // ENABLE(DFG_JIT)
class Plan : public RefCounted<Plan> {
// Dummy class to allow !ENABLE(DFG_JIT) to build.
public:
static HashMap<CString, double> compileTimeStats() { return HashMap<CString, double>(); }
};
#endif // ENABLE(DFG_JIT)
} } // namespace JSC::DFG
#endif // DFGPlan_h
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