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
32 namespace JSC {
33
34 #if ENABLE(JIT)
deref()35 void 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
markAggregate(MarkStack & markStack)66 void 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