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/*
* Copyright (C) 2012-2023 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 "JITStubRoutine.h"
#include <wtf/HashMap.h>
#include <wtf/Range.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/Vector.h>
using WTF::Range;
namespace JSC {
class GCAwareJITStubRoutine;
class VM;
#if ENABLE(JIT)
class JITStubRoutineSet {
WTF_MAKE_NONCOPYABLE(JITStubRoutineSet);
WTF_MAKE_TZONE_ALLOCATED(JITStubRoutineSet);
public:
JITStubRoutineSet();
~JITStubRoutineSet();
void add(GCAwareJITStubRoutine*);
void clearMarks();
void mark(void* candidateAddress)
{
uintptr_t address = removeCodePtrTag<uintptr_t>(candidateAddress);
if (!m_range.contains(address))
return;
markSlow(address);
}
void prepareForConservativeScan();
void deleteUnmarkedJettisonedStubRoutines(VM&);
template<typename Visitor> void traceMarkedStubRoutines(Visitor&);
private:
void markSlow(uintptr_t address);
struct Routine {
uintptr_t startAddress;
GCAwareJITStubRoutine* routine;
};
Vector<Routine> m_routines;
Vector<GCAwareJITStubRoutine*> m_immutableCodeRoutines;
Range<uintptr_t> m_range { 0, 0 };
};
#else // !ENABLE(JIT)
class JITStubRoutineSet {
WTF_MAKE_NONCOPYABLE(JITStubRoutineSet);
WTF_MAKE_TZONE_ALLOCATED(JITStubRoutineSet);
public:
JITStubRoutineSet() { }
~JITStubRoutineSet() { }
void add(GCAwareJITStubRoutine*) { }
void clearMarks() { }
void mark(void*) { }
void prepareForConservativeScan() { }
void deleteUnmarkedJettisonedStubRoutines(VM&) { }
template<typename Visitor> void traceMarkedStubRoutines(Visitor&) { }
};
#endif // !ENABLE(JIT)
} // namespace JSC
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