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 LLIntCallLinkInfo_h 27#define LLIntCallLinkInfo_h 28 29#include "JSFunction.h" 30#include "MacroAssemblerCodeRef.h" 31#include <wtf/SentinelLinkedList.h> 32 33namespace JSC { 34 35struct Instruction; 36 37struct 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}; 62 63} // namespace JSC 64 65#endif // LLIntCallLinkInfo_h 66 67