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Commit	Line	Data
	1	/*
	2	* Copyright (C) 2009 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 ConservativeRoots_h
	27	#define ConservativeRoots_h
	28
	29	#include "Heap.h"
	30	#include <wtf/OSAllocator.h>
	31	#include <wtf/Vector.h>
	32
	33	namespace JSC {
	34
	35	class DFGCodeBlocks;
	36	class Heap;
	37	class JITStubRoutineSet;
	38	class JSCell;
	39
	40	class ConservativeRoots {
	41	public:
	42	ConservativeRoots(const MarkedBlockSet, CopiedSpace);
	43	~ConservativeRoots();
	44
	45	void add(void* begin, void* end);
	46	void add(void* begin, void* end, JITStubRoutineSet&);
	47	void add(void* begin, void* end, JITStubRoutineSet&, DFGCodeBlocks&);
	48
	49	size_t size();
	50	JSCell** roots();
	51
	52	private:
	53	static const size_t inlineCapacity = 128;
	54	static const size_t nonInlineCapacity = 8192 / sizeof(JSCell*);
	55
	56	template<typename MarkHook>
	57	void genericAddPointer(void*, TinyBloomFilter, MarkHook&);
	58
	59	template<typename MarkHook>
	60	void genericAddSpan(void, void end, MarkHook&);
	61
	62	void grow();
	63
	64	JSCell** m_roots;
	65	size_t m_size;
	66	size_t m_capacity;
	67	const MarkedBlockSet* m_blocks;
	68	CopiedSpace* m_copiedSpace;
	69	JSCell* m_inlineRoots[inlineCapacity];
	70	};
	71
	72	inline size_t ConservativeRoots::size()
	73	{
	74	return m_size;
	75	}
	76
	77	inline JSCell** ConservativeRoots::roots()
	78	{
	79	return m_roots;
	80	}
	81
	82	} // namespace JSC
	83
	84	#endif // ConservativeRoots_h