1/*
2 * Copyright (C) 2013, 2014 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. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include <wtf/Vector.h>
29
30#if ENABLE(DFG_JIT)
31
32namespace JSC {
33
34class CodeBlock;
35class ScriptExecutable;
36class SlotVisitor;
37class Structure;
38class VM;
39
40namespace DFG {
41
42class CommonData;
43
44class DesiredTransition {
45public:
46 DesiredTransition(CodeBlock*, CodeBlock* codeOriginOwner, Structure*, Structure*);
47
48 void reallyAdd(VM&, CommonData*);
49
50 void visitChildren(SlotVisitor&);
51
52private:
53 CodeBlock* m_codeBlock;
54 CodeBlock* m_codeOriginOwner;
55 Structure* m_oldStructure;
56 Structure* m_newStructure;
57};
58
59class DesiredTransitions {
60public:
61 DesiredTransitions();
62 ~DesiredTransitions();
63
64 void addLazily(CodeBlock*, CodeBlock* codeOriginOwner, Structure*, Structure*);
65 void reallyAdd(VM&, CommonData*);
66 void visitChildren(SlotVisitor&);
67
68private:
69 Vector<DesiredTransition> m_transitions;
70};
71
72} } // namespace JSC::DFG
73
74#endif // ENABLE(DFG_JIT)
75