1/*
2 * Copyright (C) 2013-2016 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#include "config.h"
27#include "DFGDesiredTransitions.h"
28
29#if ENABLE(DFG_JIT)
30
31#include "CodeBlock.h"
32#include "DFGCommonData.h"
33#include "JSCInlines.h"
34
35namespace JSC { namespace DFG {
36
37DesiredTransition::DesiredTransition(CodeBlock* codeBlock, CodeBlock* codeOriginOwner, Structure* oldStructure, Structure* newStructure)
38 : m_codeBlock(codeBlock)
39 , m_codeOriginOwner(codeOriginOwner)
40 , m_oldStructure(oldStructure)
41 , m_newStructure(newStructure)
42{
43}
44
45void DesiredTransition::reallyAdd(VM& vm, CommonData* common)
46{
47 common->transitions.append(
48 WeakReferenceTransition(
49 vm, m_codeBlock,
50 m_codeOriginOwner,
51 m_oldStructure, m_newStructure));
52}
53
54void DesiredTransition::visitChildren(SlotVisitor& visitor)
55{
56 visitor.appendUnbarriered(m_codeOriginOwner);
57 visitor.appendUnbarriered(m_oldStructure);
58 visitor.appendUnbarriered(m_newStructure);
59}
60
61DesiredTransitions::DesiredTransitions()
62{
63}
64
65DesiredTransitions::~DesiredTransitions()
66{
67}
68
69void DesiredTransitions::addLazily(CodeBlock* codeBlock, CodeBlock* codeOriginOwner, Structure* oldStructure, Structure* newStructure)
70{
71 m_transitions.append(DesiredTransition(codeBlock, codeOriginOwner, oldStructure, newStructure));
72}
73
74void DesiredTransitions::reallyAdd(VM& vm, CommonData* common)
75{
76 for (unsigned i = 0; i < m_transitions.size(); i++)
77 m_transitions[i].reallyAdd(vm, common);
78}
79
80void DesiredTransitions::visitChildren(SlotVisitor& visitor)
81{
82 for (unsigned i = 0; i < m_transitions.size(); i++)
83 m_transitions[i].visitChildren(visitor);
84}
85
86} } // namespace JSC::DFG
87
88#endif // ENABLE(DFG_JIT)
89