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 namespace JSC {
30
31 #if ENABLE(JIT)
deref()32 void StructureStubInfo::deref()
33 {
34 switch (opcodeID) {
35 case op_get_by_id_self:
36 u.getByIdSelf.baseObjectStructure->deref();
37 return;
38 case op_get_by_id_proto:
39 u.getByIdProto.baseObjectStructure->deref();
40 u.getByIdProto.prototypeStructure->deref();
41 return;
42 case op_get_by_id_chain:
43 u.getByIdChain.baseObjectStructure->deref();
44 u.getByIdChain.chain->deref();
45 return;
46 case op_get_by_id_self_list: {
47 PolymorphicAccessStructureList* polymorphicStructures = u.getByIdSelfList.structureList;
48 polymorphicStructures->derefStructures(u.getByIdSelfList.listSize);
49 delete polymorphicStructures;
50 return;
51 }
52 case op_get_by_id_proto_list: {
53 PolymorphicAccessStructureList* polymorphicStructures = u.getByIdProtoList.structureList;
54 polymorphicStructures->derefStructures(u.getByIdProtoList.listSize);
55 delete polymorphicStructures;
56 return;
57 }
58 case op_put_by_id_transition:
59 u.putByIdTransition.previousStructure->deref();
60 u.putByIdTransition.structure->deref();
61 u.putByIdTransition.chain->deref();
62 return;
63 case op_put_by_id_replace:
64 u.putByIdReplace.baseObjectStructure->deref();
65 return;
66 case op_get_by_id:
67 case op_put_by_id:
68 case op_get_by_id_generic:
69 case op_put_by_id_generic:
70 case op_get_array_length:
71 case op_get_string_length:
72 // These instructions don't ref their Structures.
73 return;
74 default:
75 ASSERT_NOT_REACHED();
76 }
77 }
78 #endif
79
80 } // namespace JSC
81