mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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101 lines
2.8 KiB
C++
101 lines
2.8 KiB
C++
/*
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* Copyright (C) 2012-2018 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 "JITStubRoutine.h"
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#include <wtf/FastMalloc.h>
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#include <wtf/HashMap.h>
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#include <wtf/Range.h>
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#include <wtf/Vector.h>
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using WTF::Range;
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namespace JSC {
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class GCAwareJITStubRoutine;
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class SlotVisitor;
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#if ENABLE(JIT)
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class JITStubRoutineSet {
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WTF_MAKE_NONCOPYABLE(JITStubRoutineSet);
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WTF_MAKE_FAST_ALLOCATED;
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public:
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JITStubRoutineSet();
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~JITStubRoutineSet();
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void add(GCAwareJITStubRoutine*);
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void clearMarks();
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void mark(void* candidateAddress)
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{
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uintptr_t address = removeCodePtrTag<uintptr_t>(candidateAddress);
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if (!m_range.contains(address))
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return;
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markSlow(address);
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}
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void prepareForConservativeScan();
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void deleteUnmarkedJettisonedStubRoutines();
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void traceMarkedStubRoutines(SlotVisitor&);
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private:
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void markSlow(uintptr_t address);
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struct Routine {
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uintptr_t startAddress;
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GCAwareJITStubRoutine* routine;
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};
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Vector<Routine> m_routines;
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Range<uintptr_t> m_range { 0, 0 };
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};
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#else // !ENABLE(JIT)
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class JITStubRoutineSet {
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WTF_MAKE_NONCOPYABLE(JITStubRoutineSet);
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WTF_MAKE_FAST_ALLOCATED;
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public:
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JITStubRoutineSet() { }
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~JITStubRoutineSet() { }
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void add(GCAwareJITStubRoutine*) { }
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void clearMarks() { }
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void mark(void*) { }
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void prepareForConservativeScan() { }
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void deleteUnmarkedJettisonedStubRoutines() { }
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void traceMarkedStubRoutines(SlotVisitor&) { }
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};
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#endif // !ENABLE(JIT)
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} // namespace JSC
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