1/* 2 * Copyright (C) 2012 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef JITStubRoutineSet_h 27#define JITStubRoutineSet_h 28 29#include "JITStubRoutine.h" 30#include <wtf/FastMalloc.h> 31#include <wtf/HashMap.h> 32#include <wtf/Vector.h> 33 34namespace JSC { 35 36class GCAwareJITStubRoutine; 37class SlotVisitor; 38 39#if ENABLE(JIT) 40 41class JITStubRoutineSet { 42 WTF_MAKE_NONCOPYABLE(JITStubRoutineSet); 43 WTF_MAKE_FAST_ALLOCATED; 44 45public: 46 JITStubRoutineSet(); 47 ~JITStubRoutineSet(); 48 49 void add(GCAwareJITStubRoutine*); 50 51 void clearMarks(); 52 53 void mark(void* candidateAddress) 54 { 55 uintptr_t address = reinterpret_cast<uintptr_t>(candidateAddress); 56 if (!JITStubRoutine::passesFilter(address)) 57 return; 58 59 markSlow(address); 60 } 61 62 void deleteUnmarkedJettisonedStubRoutines(); 63 64 void traceMarkedStubRoutines(SlotVisitor&); 65 66 unsigned size() const { return m_listOfRoutines.size(); } 67 GCAwareJITStubRoutine* at(unsigned i) const { return m_listOfRoutines[i]; } 68 69private: 70 void markSlow(uintptr_t address); 71 72 HashMap<uintptr_t, GCAwareJITStubRoutine*> m_addressToRoutineMap; 73 Vector<GCAwareJITStubRoutine*> m_listOfRoutines; 74}; 75 76#else // !ENABLE(JIT) 77 78class JITStubRoutineSet { 79 WTF_MAKE_NONCOPYABLE(JITStubRoutineSet); 80 WTF_MAKE_FAST_ALLOCATED; 81 82public: 83 JITStubRoutineSet() { } 84 ~JITStubRoutineSet() { } 85 86 void add(GCAwareJITStubRoutine*) { } 87 void clearMarks() { } 88 void mark(void*) { } 89 void deleteUnmarkedJettisonedStubRoutines() { } 90 void traceMarkedStubRoutines(SlotVisitor&) { } 91}; 92 93#endif // !ENABLE(JIT) 94 95} // namespace JSC 96 97#endif // JITStubRoutineSet_h 98 99