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)

    32 void StructureStubInfo::deref()

    33 {

    34     switch (accessType) {

    35     case access_get_by_id_self:

    36         u.getByIdSelf.baseObjectStructure->deref();

    37         return;

    38     case access_get_by_id_proto:

    39         u.getByIdProto.baseObjectStructure->deref();

    40         u.getByIdProto.prototypeStructure->deref();

    41         return;

    42     case access_get_by_id_chain:

    43         u.getByIdChain.baseObjectStructure->deref();

    44         u.getByIdChain.chain->deref();

    45         return;

    46     case access_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 access_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 access_put_by_id_transition:

    59         u.putByIdTransition.previousStructure->deref();

    60         u.putByIdTransition.structure->deref();

    61         u.putByIdTransition.chain->deref();

    62         return;

    63     case access_put_by_id_replace:

    64         u.putByIdReplace.baseObjectStructure->deref();

    65         return;

    66     case access_get_by_id:

    67     case access_put_by_id:

    68     case access_get_by_id_generic:

    69     case access_put_by_id_generic:

    70     case access_get_array_length:

    71     case access_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