[apple/javascriptcore.git] / bytecode / LLIntCallLinkInfo.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 LLIntCallLinkInfo_h
#define LLIntCallLinkInfo_h

#include "JSFunction.h"
#include "MacroAssemblerCodeRef.h"
#include <wtf/SentinelLinkedList.h>

namespace JSC {

struct Instruction;

struct LLIntCallLinkInfo : public BasicRawSentinelNode<LLIntCallLinkInfo> {
    LLIntCallLinkInfo()
    {
    }
    
    ~LLIntCallLinkInfo()
    {
        if (isOnList())
            remove();
    }
    
    bool isLinked() { return callee; }
    
    void unlink()
    {
        callee.clear();
        machineCodeTarget = MacroAssemblerCodePtr();
        if (isOnList())
            remove();
    }
    
    WriteBarrier<JSFunction> callee;
    WriteBarrier<JSFunction> lastSeenCallee;
    MacroAssemblerCodePtr machineCodeTarget;
};

} // namespace JSC

#endif // LLIntCallLinkInfo_h
Commit	Line	Data
b37bf2e1	1	/*
6fe7ccc8	2	* Copyright (C) 2012 Apple Inc. All rights reserved.
b37bf2e1 A	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	*
9dae56ea	13	* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
b37bf2e1 A	14	* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
b37bf2e1 A	15	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
9dae56ea	16	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
b37bf2e1 A	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
6fe7ccc8	23	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
b37bf2e1 A	24	*/
b37bf2e1 A	25
6fe7ccc8 A	26	#ifndef LLIntCallLinkInfo_h
	27	#define LLIntCallLinkInfo_h
	28
	29	#include "JSFunction.h"
	30	#include "MacroAssemblerCodeRef.h"
	31	#include <wtf/SentinelLinkedList.h>
b37bf2e1	32
9dae56ea	33	namespace JSC {
b37bf2e1	34
6fe7ccc8 A	35	struct Instruction;
	36
	37	struct LLIntCallLinkInfo : public BasicRawSentinelNode<LLIntCallLinkInfo> {
	38	LLIntCallLinkInfo()
	39	{
	40	}
	41
	42	~LLIntCallLinkInfo()
	43	{
	44	if (isOnList())
	45	remove();
	46	}
	47
	48	bool isLinked() { return callee; }
	49
	50	void unlink()
	51	{
	52	callee.clear();
	53	machineCodeTarget = MacroAssemblerCodePtr();
	54	if (isOnList())
	55	remove();
	56	}
	57
	58	WriteBarrier<JSFunction> callee;
	59	WriteBarrier<JSFunction> lastSeenCallee;
	60	MacroAssemblerCodePtr machineCodeTarget;
	61	};
b37bf2e1	62
9dae56ea A	63	} // namespace JSC
9dae56ea A	64
6fe7ccc8 A	65	#endif // LLIntCallLinkInfo_h
6fe7ccc8 A	66