[apple/javascriptcore.git] / heap / JITStubRoutineSet.h

/*
 * Copyright (C) 2012 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. 
 */

#ifndef JITStubRoutineSet_h
#define JITStubRoutineSet_h

#include "JITStubRoutine.h"
#include <wtf/FastMalloc.h>
#include <wtf/HashMap.h>
#include <wtf/Vector.h>

namespace JSC {

class GCAwareJITStubRoutine;
class SlotVisitor;

#if ENABLE(JIT)

class JITStubRoutineSet {
    WTF_MAKE_NONCOPYABLE(JITStubRoutineSet);
    WTF_MAKE_FAST_ALLOCATED;
    
public:
    JITStubRoutineSet();
    ~JITStubRoutineSet();
    
    void add(GCAwareJITStubRoutine*);

    void clearMarks();
    
    void mark(void* candidateAddress)
    {
        uintptr_t address = reinterpret_cast<uintptr_t>(candidateAddress);
        if (!JITStubRoutine::passesFilter(address))
            return;
        
        markSlow(address);
    }
    
    void deleteUnmarkedJettisonedStubRoutines();
    
    void traceMarkedStubRoutines(SlotVisitor&);
    
    unsigned size() const { return m_listOfRoutines.size(); }
    GCAwareJITStubRoutine* at(unsigned i) const { return m_listOfRoutines[i]; }
    
private:
    void markSlow(uintptr_t address);
    
    HashMap<uintptr_t, GCAwareJITStubRoutine*> m_addressToRoutineMap;
    Vector<GCAwareJITStubRoutine*> m_listOfRoutines;
};

#else // !ENABLE(JIT)

class JITStubRoutineSet {
    WTF_MAKE_NONCOPYABLE(JITStubRoutineSet);
    WTF_MAKE_FAST_ALLOCATED;
    
public:
    JITStubRoutineSet() { }
    ~JITStubRoutineSet() { }

    void add(GCAwareJITStubRoutine*) { }
    void clearMarks() { }
    void mark(void*) { }
    void deleteUnmarkedJettisonedStubRoutines() { }
    void traceMarkedStubRoutines(SlotVisitor&) { }
};

#endif // !ENABLE(JIT)

} // namespace JSC

#endif // JITStubRoutineSet_h
Commit	Line	Data
93a37866 A	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
93a37866	29	#include "JITStubRoutine.h"
81345200	30	#include <wtf/FastMalloc.h>
93a37866 A	31	#include <wtf/HashMap.h>
	32	#include <wtf/Vector.h>
	33
	34	namespace JSC {
	35
	36	class GCAwareJITStubRoutine;
	37	class SlotVisitor;
	38
	39	#if ENABLE(JIT)
	40
	41	class JITStubRoutineSet {
	42	WTF_MAKE_NONCOPYABLE(JITStubRoutineSet);
	43	WTF_MAKE_FAST_ALLOCATED;
	44
	45	public:
	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
	69	private:
	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
	78	class JITStubRoutineSet {
	79	WTF_MAKE_NONCOPYABLE(JITStubRoutineSet);
	80	WTF_MAKE_FAST_ALLOCATED;
	81
	82	public:
	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