| /* |
| * Copyright (C) 2008 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "StructureStubInfo.h" |
| |
| #include "JSObject.h" |
| #include "PolymorphicPutByIdList.h" |
| |
| |
| namespace JSC { |
| |
| #if ENABLE(JIT) |
| void StructureStubInfo::deref() |
| { |
| switch (accessType) { |
| case access_get_by_id_self_list: { |
| PolymorphicAccessStructureList* polymorphicStructures = u.getByIdSelfList.structureList; |
| delete polymorphicStructures; |
| return; |
| } |
| case access_get_by_id_proto_list: { |
| PolymorphicAccessStructureList* polymorphicStructures = u.getByIdProtoList.structureList; |
| delete polymorphicStructures; |
| return; |
| } |
| case access_put_by_id_list: |
| delete u.putByIdList.list; |
| return; |
| case access_get_by_id_self: |
| case access_get_by_id_proto: |
| case access_get_by_id_chain: |
| case access_put_by_id_transition_normal: |
| case access_put_by_id_transition_direct: |
| case access_put_by_id_replace: |
| case access_unset: |
| case access_get_by_id_generic: |
| case access_put_by_id_generic: |
| case access_get_array_length: |
| case access_get_string_length: |
| // These instructions don't have to release any allocated memory |
| return; |
| default: |
| ASSERT_NOT_REACHED(); |
| } |
| } |
| |
| bool StructureStubInfo::visitWeakReferences() |
| { |
| switch (accessType) { |
| case access_get_by_id_self: |
| if (!Heap::isMarked(u.getByIdSelf.baseObjectStructure.get())) |
| return false; |
| break; |
| case access_get_by_id_proto: |
| if (!Heap::isMarked(u.getByIdProto.baseObjectStructure.get()) |
| || !Heap::isMarked(u.getByIdProto.prototypeStructure.get())) |
| return false; |
| break; |
| case access_get_by_id_chain: |
| if (!Heap::isMarked(u.getByIdChain.baseObjectStructure.get()) |
| || !Heap::isMarked(u.getByIdChain.chain.get())) |
| return false; |
| break; |
| case access_get_by_id_self_list: { |
| PolymorphicAccessStructureList* polymorphicStructures = u.getByIdSelfList.structureList; |
| if (!polymorphicStructures->visitWeak(u.getByIdSelfList.listSize)) |
| return false; |
| break; |
| } |
| case access_get_by_id_proto_list: { |
| PolymorphicAccessStructureList* polymorphicStructures = u.getByIdProtoList.structureList; |
| if (!polymorphicStructures->visitWeak(u.getByIdProtoList.listSize)) |
| return false; |
| break; |
| } |
| case access_put_by_id_transition_normal: |
| case access_put_by_id_transition_direct: |
| if (!Heap::isMarked(u.putByIdTransition.previousStructure.get()) |
| || !Heap::isMarked(u.putByIdTransition.structure.get()) |
| || !Heap::isMarked(u.putByIdTransition.chain.get())) |
| return false; |
| break; |
| case access_put_by_id_replace: |
| if (!Heap::isMarked(u.putByIdReplace.baseObjectStructure.get())) |
| return false; |
| break; |
| case access_put_by_id_list: |
| if (!u.putByIdList.list->visitWeak()) |
| return false; |
| break; |
| default: |
| // The rest of the instructions don't require references, so there is no need to |
| // do anything. |
| break; |
| } |
| return true; |
| } |
| #endif |
| |
| } // namespace JSC |