96 lines
3.0 KiB
C++
96 lines
3.0 KiB
C++
/*
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* Copyright (C) 2012-2019 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "JSCJSValue.h"
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#include "ProfilerOrigin.h"
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#include <wtf/PrintStream.h>
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#include <wtf/Vector.h>
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namespace JSC {
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class CodeBlock;
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class CodeOrigin;
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namespace Profiler {
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class Database;
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class OriginStack {
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public:
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OriginStack() { }
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OriginStack(WTF::HashTableDeletedValueType);
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explicit OriginStack(const Origin&);
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explicit OriginStack(Database&, CodeBlock*, const CodeOrigin&);
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~OriginStack();
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void append(const Origin&);
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bool operator!() const { return m_stack.isEmpty(); }
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unsigned size() const { return m_stack.size(); }
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const Origin& fromBottom(unsigned i) const { return m_stack[i]; }
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const Origin& fromTop(unsigned i) const { return m_stack[m_stack.size() - i - 1]; }
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bool operator==(const OriginStack&) const;
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unsigned hash() const;
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bool isHashTableDeletedValue() const;
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void dump(PrintStream&) const;
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JSValue toJS(JSGlobalObject*) const;
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private:
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Vector<Origin, 1> m_stack;
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};
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inline bool OriginStack::isHashTableDeletedValue() const
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{
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return m_stack.size() == 1 && m_stack[0].isHashTableDeletedValue();
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}
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struct OriginStackHash {
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static unsigned hash(const OriginStack& key) { return key.hash(); }
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static bool equal(const OriginStack& a, const OriginStack& b) { return a == b; }
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static constexpr bool safeToCompareToEmptyOrDeleted = true;
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};
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} } // namespace JSC::Profiler
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namespace WTF {
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template<typename T> struct DefaultHash;
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template<> struct DefaultHash<JSC::Profiler::OriginStack> : JSC::Profiler::OriginStackHash { };
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template<typename T> struct HashTraits;
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template<> struct HashTraits<JSC::Profiler::OriginStack> : SimpleClassHashTraits<JSC::Profiler::OriginStack> { };
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} // namespace WTF
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