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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 JSCell;
	36	class DFGCodeBlocks;
	37	class Heap;
	38
	39	class ConservativeRoots {
	40	public:
	41	ConservativeRoots(const MarkedBlockSet, CopiedSpace);
	42	~ConservativeRoots();
	43
	44	void add(void* begin, void* end);
	45	void add(void* begin, void* end, DFGCodeBlocks&);
	46
	47	size_t size();
	48	JSCell** roots();
	49
	50	private:
	51	static const size_t inlineCapacity = 128;
	52	static const size_t nonInlineCapacity = 8192 / sizeof(JSCell*);
	53
	54	template<typename MarkHook>
	55	void genericAddPointer(void*, TinyBloomFilter, MarkHook&);
	56
	57	template<typename MarkHook>
	58	void genericAddSpan(void, void end, MarkHook&);
	59
	60	void grow();
	61
	62	JSCell** m_roots;
	63	size_t m_size;
	64	size_t m_capacity;
	65	const MarkedBlockSet* m_blocks;
	66	CopiedSpace* m_copiedSpace;
	67	JSCell* m_inlineRoots[inlineCapacity];
	68	};
	69
	70	inline size_t ConservativeRoots::size()
	71	{
	72	return m_size;
	73	}
	74
	75	inline JSCell** ConservativeRoots::roots()
	76	{
	77	return m_roots;
	78	}
	79
	80	} // namespace JSC
	81
	82	#endif // ConservativeRoots_h