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ProfilerOriginStack.h
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88 lines (65 loc) · 2.8 KB
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/*
* Copyright (C) 2012-2019 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 <JavaScriptCore/JSCJSValue.h>
#include <JavaScriptCore/ProfilerOrigin.h>
#include <wtf/PrintStream.h>
#include <wtf/Vector.h>
namespace JSC {
class CodeBlock;
class CodeOrigin;
namespace Profiler {
class Database;
class Dumper;
class OriginStack {
public:
OriginStack() { }
OriginStack(WTF::HashTableDeletedValueType);
explicit OriginStack(const Origin&);
explicit OriginStack(Database&, CodeBlock*, const CodeOrigin&);
~OriginStack();
void append(const Origin&);
bool NODELETE operator!() const { return m_stack.isEmpty(); }
unsigned size() const { return m_stack.size(); }
const Origin& fromBottom(unsigned i) const { return m_stack[i]; }
const Origin& fromTop(unsigned i) const { return m_stack[m_stack.size() - i - 1]; }
bool operator==(const OriginStack&) const;
unsigned NODELETE hash() const;
bool isHashTableDeletedValue() const;
static constexpr bool safeToCompareToHashTableEmptyOrDeletedValue = true;
void dump(PrintStream&) const;
Ref<JSON::Value> toJSON(Dumper&) const;
private:
Vector<Origin, 1> m_stack;
};
inline bool OriginStack::isHashTableDeletedValue() const
{
return m_stack.size() == 1 && m_stack[0].isHashTableDeletedValue();
}
} } // namespace JSC::Profiler
namespace WTF {
template<typename T> struct HashTraits;
template<> struct HashTraits<JSC::Profiler::OriginStack> : SimpleClassHashTraits<JSC::Profiler::OriginStack> { };
} // namespace WTF