1/*
2 * Copyright (C) 2008 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#include "config.h"
27#include "StructureStubInfo.h"
28
29#include "JSObject.h"
30#include "ScopeChain.h"
31
32namespace JSC {
33
34#if ENABLE(JIT)
35void StructureStubInfo::deref()
36{
37    switch (accessType) {
38    case access_get_by_id_self_list: {
39        PolymorphicAccessStructureList* polymorphicStructures = u.getByIdSelfList.structureList;
40        delete polymorphicStructures;
41        return;
42    }
43    case access_get_by_id_proto_list: {
44        PolymorphicAccessStructureList* polymorphicStructures = u.getByIdProtoList.structureList;
45        delete polymorphicStructures;
46        return;
47    }
48    case access_get_by_id_self:
49    case access_get_by_id_proto:
50    case access_get_by_id_chain:
51    case access_put_by_id_transition:
52    case access_put_by_id_replace:
53    case access_get_by_id:
54    case access_put_by_id:
55    case access_get_by_id_generic:
56    case access_put_by_id_generic:
57    case access_get_array_length:
58    case access_get_string_length:
59        // These instructions don't have to release any allocated memory
60        return;
61    default:
62        ASSERT_NOT_REACHED();
63    }
64}
65
66void StructureStubInfo::markAggregate(MarkStack& markStack)
67{
68    switch (accessType) {
69    case access_get_by_id_self:
70        markStack.append(&u.getByIdSelf.baseObjectStructure);
71        return;
72    case access_get_by_id_proto:
73        markStack.append(&u.getByIdProto.baseObjectStructure);
74        markStack.append(&u.getByIdProto.prototypeStructure);
75        return;
76    case access_get_by_id_chain:
77        markStack.append(&u.getByIdChain.baseObjectStructure);
78        markStack.append(&u.getByIdChain.chain);
79        return;
80    case access_get_by_id_self_list: {
81        PolymorphicAccessStructureList* polymorphicStructures = u.getByIdSelfList.structureList;
82        polymorphicStructures->markAggregate(markStack, u.getByIdSelfList.listSize);
83        return;
84    }
85    case access_get_by_id_proto_list: {
86        PolymorphicAccessStructureList* polymorphicStructures = u.getByIdProtoList.structureList;
87        polymorphicStructures->markAggregate(markStack, u.getByIdProtoList.listSize);
88        return;
89    }
90    case access_put_by_id_transition:
91        markStack.append(&u.putByIdTransition.previousStructure);
92        markStack.append(&u.putByIdTransition.structure);
93        markStack.append(&u.putByIdTransition.chain);
94        return;
95    case access_put_by_id_replace:
96        markStack.append(&u.putByIdReplace.baseObjectStructure);
97        return;
98    case access_get_by_id:
99    case access_put_by_id:
100    case access_get_by_id_generic:
101    case access_put_by_id_generic:
102    case access_get_array_length:
103    case access_get_string_length:
104        // These instructions don't need to mark anything
105        return;
106    default:
107        ASSERT_NOT_REACHED();
108    }
109}
110#endif
111
112} // namespace JSC
113