WebKit/Source/JavaScriptCore/jit/ICStats.h at main · WebKit/WebKit · GitHub

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* 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 "CacheableIdentifierInlines.h"

#include "ClassInfo.h"

#include "Identifier.h"

#include <wtf/Condition.h>

#include <wtf/Lock.h>

#include <wtf/Noncopyable.h>

#include <wtf/PrintStream.h>

#include <wtf/Spectrum.h>

#include <wtf/TZoneMalloc.h>

namespace JSC {

namespace ICStatsInternal {

static constexpr bool traceHandlerChains = false;

}

#define FOR_EACH_ICEVENT_KIND(macro) \

macro(InvalidKind) \

macro(GetByAddAccessCase) \

macro(GetByReplaceWithJump) \

macro(GetBySelfPatch) \

macro(InAddAccessCase) \

macro(InReplaceWithJump) \

macro(InReplaceWithGeneric) \

macro(InstanceOfAddAccessCase) \

macro(InstanceOfReplaceWithJump) \

macro(OperationGetByIdGaveUp) \

macro(OperationGetByIdGeneric) \

macro(OperationGetByIdBuildList) \

macro(OperationGetByIdOptimize) \

macro(OperationGetByValOptimize) \

macro(OperationGetByIdWithThisOptimize) \

macro(OperationGetByIdWithThisGaveUp) \

macro(OperationGetByIdWithThisGeneric) \

macro(OperationGetByValWithThisOptimize) \

macro(OperationGenericIn) \

macro(OperationInByIdGeneric) \

macro(OperationInByIdOptimize) \

macro(OperationPutByIdStrictGaveUp) \

macro(OperationPutByIdSloppyGaveUp) \

macro(OperationPutByIdDirectStrictGaveUp) \

macro(OperationPutByIdDirectSloppyGaveUp) \

macro(OperationPutByIdStrictOptimize) \

macro(OperationPutByIdSloppyOptimize) \

macro(OperationPutByIdDirectStrictOptimize) \

macro(OperationPutByIdDirectSloppyOptimize) \

macro(OperationPutByIdStrictBuildList) \

macro(OperationPutByIdSloppyBuildList) \

macro(OperationPutByIdDefinePrivateFieldStrictOptimize) \

macro(OperationPutByIdPutPrivateFieldStrictOptimize) \

macro(PutByAddAccessCase) \

macro(PutByReplaceWithJump) \

macro(PutBySelfPatch) \

macro(InBySelfPatch) \

macro(DelByReplaceWithJump) \

macro(DelByReplaceWithGeneric) \

macro(OperationGetPrivateNameOptimize) \

macro(OperationGetPrivateNameById) \

macro(OperationGetPrivateNameByIdOptimize) \

macro(OperationGetPrivateNameByIdGeneric) \

macro(CheckPrivateBrandAddAccessCase) \

macro(SetPrivateBrandAddAccessCase) \

macro(CheckPrivateBrandReplaceWithJump) \

macro(SetPrivateBrandReplaceWithJump) \

macro(OperationPutByIdSetPrivateFieldStrictOptimize) \

macro(OperationPutByIdDefinePrivateFieldStrictGaveUp) \

macro(OperationPutByIdSetPrivateFieldStrictGaveUp) \

macro(OperationGetByValGaveUp) \

macro(OperationGetByValGeneric) \

macro(OperationGetByValWithThisGaveUp) \

macro(OperationGetByValWithThisGeneric) \

macro(OperationPutByValStrictGaveUp) \

macro(OperationPutByValStrictGeneric) \

macro(OperationPutByValSloppyGaveUp) \

macro(OperationPutByValSloppyGeneric) \

macro(OperationPutByValDefinePrivateFieldGaveUp) \

macro(OperationPutByValDefinePrivateFieldGeneric) \

macro(OperationPutByValSetPrivateFieldGaveUp) \

macro(OperationPutByValSetPrivateFieldGeneric) \

/* JIT execution tracing events */ \

/* Slow path handlers */ \

macro(GetByIdSlowPath) \

macro(GetByIdWithThisSlowPath) \

macro(GetByValSlowPath) \

macro(GetPrivateNameSlowPath) \

macro(GetByValWithThisSlowPath) \

macro(PutByIdSlowPath) \

macro(PutByValSlowPath) \

macro(InstanceOfSlowPath) \

macro(DeleteByIdSlowPath) \

macro(DeleteByValSlowPath) \

/* GetById handlers */ \

macro(GetByIdLoadOwnPropertyHandler) \

macro(GetByIdLoadPrototypePropertyHandler) \

macro(GetByIdMissHandler) \

macro(GetByIdCustomAccessorHandler) \

macro(GetByIdCustomValueHandler) \

macro(GetByIdGetterHandler) \

macro(GetByIdMegamorphicGetterHandler) \

macro(GetByIdProxyObjectLoadHandler) \

macro(GetByIdModuleNamespaceLoadHandler) \

/* PutById handlers */ \

macro(PutByIdReplaceHandler) \

macro(PutByIdTransitionHandler) \

macro(PutByIdTransitionReallocatingOutOfLineHandler) \

macro(PutByIdCustomAccessorHandler) \

macro(PutByIdCustomValueHandler) \

macro(PutByIdStrictSetterHandler) \

macro(PutByIdSloppySetterHandler) \

/* InById handlers */ \

macro(InByIdHitHandler) \

macro(InByIdMissHandler) \

/* DeleteById handlers */ \

macro(DeleteByIdDeleteHandler) \

macro(DeleteByIdMissHandler) \

macro(DeleteByIdNonConfigurableHandler) \

/* InstanceOf handlers */ \

macro(InstanceOfHitHandler) \

macro(InstanceOfMissHandler) \

/* GetByVal handlers */ \

macro(GetByValLoadOwnPropertyHandler) \

macro(GetByValLoadPrototypePropertyHandler) \

macro(GetByValMissHandler) \

macro(GetByValCustomAccessorHandler) \

macro(GetByValCustomValueHandler) \

macro(GetByValGetterHandler) \

/* PutByVal handlers */ \

macro(PutByValReplaceHandler) \

macro(PutByValTransitionHandler) \

macro(PutByValTransitionOutOfLineHandler) \

macro(PutByValCustomAccessorHandler) \

macro(PutByValCustomValueHandler) \

macro(PutByValStrictSetterHandler) \

macro(PutByValSloppySetterHandler) \

/* InByVal handlers */ \

macro(InByValHitHandler) \

macro(InByValMissHandler) \

/* DeleteByVal handlers */ \

macro(DeleteByValDeleteHandler) \

macro(DeleteByValMissHandler) \

macro(DeleteByValNonConfigurableHandler) \

/* Other handlers */ \

macro(CheckPrivateBrandHandler) \

macro(SetPrivateBrandHandler) \

macro(CompiledHandler) \

macro(DOMJITHandler)

class ICEvent {

public:

enum Kind {

#define ICEVENT_KIND_DECLARATION(name) name,

FOR_EACH_ICEVENT_KIND(ICEVENT_KIND_DECLARATION)

#undef ICEVENT_KIND_DECLARATION

};

enum PropertyLocation {

Unknown,

BaseObject,

ProtoLookup

};

ICEvent() = default;

explicit ICEvent(Kind kind)

: m_kind(kind)

, m_propertyLocation(Unknown)

{

ASSERT(kind != InvalidKind);

}

ICEvent(Kind kind, const ClassInfo* classInfo)

: m_kind(kind)

, m_classInfo(classInfo)

, m_propertyLocation(Unknown)

{

ASSERT(kind != InvalidKind);

}

ICEvent(Kind kind, const ClassInfo* classInfo, bool isBaseProperty)

: m_kind(kind)

, m_classInfo(classInfo)

, m_propertyLocation(isBaseProperty ? BaseObject : ProtoLookup)

{

ASSERT(kind != InvalidKind);

}

ICEvent(WTF::HashTableDeletedValueType)

: m_kind(InvalidKind)

, m_propertyLocation(BaseObject)

{

}

bool NODELETE operator==(const ICEvent& other) const

{

return m_kind == other.m_kind

&& m_classInfo == other.m_classInfo

&& m_propertyLocation == other.m_propertyLocation;

}

bool operator<(const ICEvent& other) const;

bool operator>(const ICEvent& other) const { return other < *this; }

bool operator<=(const ICEvent& other) const { return !(*this > other); }

bool operator>=(const ICEvent& other) const { return !(*this < other); }

explicit operator bool() const

{

return *this != ICEvent();

}

Kind kind() const { return m_kind; }

const ClassInfo* classInfo() const { return m_classInfo; }

unsigned NODELETE hash() const

{

return static_cast<unsigned>(m_kind) + static_cast<unsigned>(m_propertyLocation) + WTF::PtrHash<const ClassInfo*>::hash(m_classInfo);

}

bool NODELETE isHashTableDeletedValue() const

{

return *this == ICEvent(WTF::HashTableDeletedValue);

}

static constexpr bool safeToCompareToHashTableEmptyOrDeletedValue = true;

void dump(PrintStream&) const;

void log() const;

private:

Kind m_kind { InvalidKind };

const ClassInfo* m_classInfo { nullptr };

PropertyLocation m_propertyLocation { Unknown };

};

} // namespace JSC

namespace WTF {

void printInternal(PrintStream&, JSC::ICEvent::Kind);

template<typename T> struct HashTraits;

template<> struct HashTraits<JSC::ICEvent> : SimpleClassHashTraits<JSC::ICEvent> {

static constexpr bool emptyValueIsZero = false;

};

} // namespace WTF

namespace JSC {

class ICStats {

WTF_MAKE_NONCOPYABLE(ICStats);

WTF_MAKE_TZONE_ALLOCATED(ICStats);

public:

ICStats();

~ICStats();

void add(const ICEvent& event);

static ICStats& singleton();

void startNewChain(unsigned totalNumberOfHandlersInChain);

void appendToCurrentChain(ICEvent::Kind);

void dumpChains();

private:

Spectrum<ICEvent, uint64_t> m_spectrum;

RefPtr<Thread> m_thread;

Lock m_lock;

Condition m_condition;

bool m_shouldStop { false };

static Atomic<ICStats*> s_instance;

};

#define LOG_IC(arguments) do { \

if (Options::useICStats()) \

(ICEvent arguments).log(); \

} while (false)

} // namespace JSC

WebKit/Source/JavaScriptCore/jit/ICStats.h at main · WebKit/WebKit · GitHub

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