mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2025-02-17 02:18:14 +00:00
95 lines
3.1 KiB
C++
95 lines
3.1 KiB
C++
/*
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* Copyright (C) 2015-2017 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 "JSCast.h"
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#include "Structure.h"
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#include <wtf/MonotonicTime.h>
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#include <wtf/StackTrace.h>
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namespace JSC {
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struct CellProfile {
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enum Liveness {
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Unknown,
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Dead,
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Live
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};
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CellProfile(HeapCell* cell, HeapCell::Kind kind, Liveness liveness)
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: m_cell(cell)
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, m_kind(kind)
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, m_liveness(liveness)
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, m_timestamp(MonotonicTime::now())
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{
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if (isJSCellKind(m_kind) && m_liveness != Dead)
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m_className = jsCell()->structure()->classInfo()->className;
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}
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CellProfile(CellProfile&& other)
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: m_cell(other.m_cell)
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, m_kind(other.m_kind)
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, m_liveness(other.m_liveness)
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, m_timestamp(other.m_timestamp)
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, m_className(other.m_className)
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, m_stackTrace(WTFMove(other.m_stackTrace))
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{ }
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HeapCell* cell() const { return m_cell; }
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JSCell* jsCell() const
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{
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ASSERT(isJSCell());
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return static_cast<JSCell*>(m_cell);
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}
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bool isJSCell() const { return isJSCellKind(m_kind); }
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HeapCell::Kind kind() const { return m_kind; }
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bool isLive() const { return m_liveness == Live; }
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bool isDead() const { return m_liveness == Dead; }
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void setIsLive() { m_liveness = Live; }
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void setIsDead() { m_liveness = Dead; }
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MonotonicTime timestamp() const { return m_timestamp; }
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const char* className() const { return m_className; }
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StackTrace* stackTrace() const { return m_stackTrace.get(); }
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void setStackTrace(StackTrace* trace) { m_stackTrace = std::unique_ptr<StackTrace>(trace); }
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private:
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HeapCell* m_cell;
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HeapCell::Kind m_kind;
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Liveness m_liveness { Unknown };
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MonotonicTime m_timestamp;
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const char* m_className { nullptr };
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std::unique_ptr<StackTrace> m_stackTrace;
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};
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} // namespace JSC
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