mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
/*
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* Copyright (C) 2014, 2016 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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#if ENABLE(DFG_JIT)
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#include <wtf/Vector.h>
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namespace JSC {
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class SlotVisitor;
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class VM;
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namespace DFG {
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class Plan;
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class Scannable;
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class Safepoint {
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public:
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class Result {
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public:
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Result()
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: m_didGetCancelled(false)
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, m_wasChecked(true)
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{
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}
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~Result();
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bool didGetCancelled();
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private:
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friend class Safepoint;
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bool m_didGetCancelled;
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bool m_wasChecked;
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};
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Safepoint(Plan&, Result&);
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~Safepoint();
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void add(Scannable*);
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void begin();
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void checkLivenessAndVisitChildren(SlotVisitor&);
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bool isKnownToBeLiveDuringGC();
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void cancel();
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VM* vm() const; // May return null if we've been cancelled.
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private:
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VM* m_vm;
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Plan& m_plan;
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Vector<Scannable*> m_scannables;
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bool m_didCallBegin;
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Result& m_result;
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};
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} } // namespace JSC::DFG
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#endif // ENABLE(DFG_JIT)
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