WebKit/Source/JavaScriptCore/profiler/ProfilerOrigin.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 <JavaScriptCore/BytecodeIndex.h>

#include <JavaScriptCore/CodeBlockHash.h>

#include <JavaScriptCore/JSCJSValue.h>

#include <wtf/PrintStream.h>

namespace JSC {

class CodeBlock;

namespace Profiler {

class Bytecodes;

class Database;

class Dumper;

class Origin {

public:

Origin() = default;

Origin(WTF::HashTableDeletedValueType)

: m_bytecodeIndex(WTF::HashTableDeletedValue)

{ }

Origin(Bytecodes* bytecodes, BytecodeIndex bytecodeIndex)

: m_bytecodes(bytecodes)

, m_bytecodeIndex(bytecodeIndex)

{

ASSERT(m_bytecodeIndex.offset() < std::numeric_limits<unsigned>::max() - 1);

}

Origin(Database&, CodeBlock*, BytecodeIndex);

bool operator!() const { return !m_bytecodeIndex; }

Bytecodes* bytecodes() const { return m_bytecodes; }

BytecodeIndex bytecodeIndex() const { return m_bytecodeIndex; }

friend bool operator==(const Origin&, const Origin&) = default;

unsigned hash() const;

bool isHashTableDeletedValue() const;

static constexpr bool safeToCompareToHashTableEmptyOrDeletedValue = true;

void dump(PrintStream&) const;

Ref<JSON::Value> toJSON(Dumper&) const;

private:

Bytecodes* m_bytecodes;

BytecodeIndex m_bytecodeIndex;

};

inline unsigned Origin::hash() const

{

return WTF::PtrHash<Bytecodes*>::hash(m_bytecodes) + m_bytecodeIndex.hash();

}

inline bool Origin::isHashTableDeletedValue() const

{

return m_bytecodeIndex.isHashTableDeletedValue();

}

} } // namespace JSC::Profiler

namespace WTF {

template<typename T> struct HashTraits;

template<> struct HashTraits<JSC::Profiler::Origin> : SimpleClassHashTraits<JSC::Profiler::Origin> { };

} // namespace WTF

WebKit/Source/JavaScriptCore/profiler/ProfilerOrigin.h at main · WebKit/WebKit · GitHub

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