The Tor Browser: dom/indexedDB/IDBWrapperCache.cpp@7e26c7da4463

     1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* vim: set ts=2 et sw=2 tw=80: */

     3 /* This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,

     5  * You can obtain one at http://mozilla.org/MPL/2.0/. */

     7 #include "IDBWrapperCache.h"

     8 #include "nsCycleCollector.h"

    10 USING_INDEXEDDB_NAMESPACE

    12 NS_IMPL_CYCLE_COLLECTION_CLASS(IDBWrapperCache)

    14 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(IDBWrapperCache,

    15                                                   DOMEventTargetHelper)

    16   // Don't need NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS because

    17   // DOMEventTargetHelper does it for us.

    18 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END

    20 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(IDBWrapperCache,

    21                                                 DOMEventTargetHelper)

    22   if (tmp->mScriptOwner) {

    23     tmp->mScriptOwner = nullptr;

    24     mozilla::DropJSObjects(tmp);

    25   }

    26 NS_IMPL_CYCLE_COLLECTION_UNLINK_END

    28 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(IDBWrapperCache,

    29                                                DOMEventTargetHelper)

    30   // Don't need NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER because

    31   // DOMEventTargetHelper does it for us.

    32   NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mScriptOwner)

    33 NS_IMPL_CYCLE_COLLECTION_TRACE_END

    35 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(IDBWrapperCache)

    36 NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)

    38 NS_IMPL_ADDREF_INHERITED(IDBWrapperCache, DOMEventTargetHelper)

    39 NS_IMPL_RELEASE_INHERITED(IDBWrapperCache, DOMEventTargetHelper)

    41 IDBWrapperCache::~IDBWrapperCache()

    42 {

    43   mScriptOwner = nullptr;

    44   ReleaseWrapper(this);

    45   mozilla::DropJSObjects(this);

    46 }

    48 void

    49 IDBWrapperCache::SetScriptOwner(JSObject* aScriptOwner)

    50 {

    51   NS_ASSERTION(aScriptOwner, "This should never be null!");

    53   mScriptOwner = aScriptOwner;

    54   mozilla::HoldJSObjects(this);

    55 }

    57 #ifdef DEBUG

    58 void

    59 IDBWrapperCache::AssertIsRooted() const

    60 {

    61   MOZ_ASSERT(cyclecollector::IsJSHolder(const_cast<IDBWrapperCache*>(this)),

    62              "Why aren't we rooted?!");

    63 }

    64 #endif

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