Attachment 346932 Details for Bug 188474 – Patch

[patch] Patch

bug-188474-20180810150005.patch (text/plain), 30.22 KB, created by Sihui Liu on 2018-08-10 15:00:06 PDT

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Creator: Sihui Liu

Created: 2018-08-10 15:00:06 PDT

Size: 30.22 KB

patch

obsolete

>Subversion Revision: 234733
>diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
>index 994a0560fbed876db99b3c2467c2feac27e8ba24..ae7a6f17f3b44b2fec47af8cd287aeadb7686285 100644
>--- a/Source/WebCore/ChangeLog
>+++ b/Source/WebCore/ChangeLog
>@@ -1,3 +1,63 @@
>+2018-08-10  Sihui Liu  <sihui_liu@apple.com>
>+
>+        CrashTracer: com.apple.WebKit.Storage at WebCore::IDBServer::UniqueIDBDatabase::connectionClosedFromClient(WebCore::IDBServer::UniqueIDBDatabaseConnection&)
>+        https://bugs.webkit.org/show_bug.cgi?id=188474
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        UniqueIDBDatabaseConnection is refcounted by UniqueIDBDatabaseTransaction and it refcounts
>+        UniqueIDBDatabaseTransaction. This cycle could make UniqueIDBDatabaseConnection outlives
>+        UniqueIDBDatabase, so its reference to UniqueIDBDatabase may be stale. Calling a function
>+        on a stale object is probably the reason of recent various storage process crashes in
>+        indexedDB.
>+
>+        This patch makes m_database a WeakPtr and adds assertions that could help us debug the
>+        crashes.
>+
>+        * Modules/indexeddb/server/IDBServer.cpp:
>+        (WebCore::IDBServer::IDBServer::closeAndDeleteDatabasesModifiedSince):
>+        (WebCore::IDBServer::IDBServer::closeAndDeleteDatabasesForOrigins):
>+        * Modules/indexeddb/server/UniqueIDBDatabase.cpp:
>+        (WebCore::IDBServer::UniqueIDBDatabase::commitTransaction):
>+        (WebCore::IDBServer::UniqueIDBDatabase::abortTransaction):
>+        * Modules/indexeddb/server/UniqueIDBDatabase.h:
>+        * Modules/indexeddb/server/UniqueIDBDatabaseConnection.cpp:
>+        (WebCore::IDBServer::UniqueIDBDatabaseConnection::UniqueIDBDatabaseConnection):
>+        (WebCore::IDBServer::UniqueIDBDatabaseConnection::~UniqueIDBDatabaseConnection):
>+        (WebCore::IDBServer::UniqueIDBDatabaseConnection::abortTransactionWithoutCallback):
>+        (WebCore::IDBServer::UniqueIDBDatabaseConnection::connectionClosedFromClient):
>+        (WebCore::IDBServer::UniqueIDBDatabaseConnection::confirmDidCloseFromServer):
>+        (WebCore::IDBServer::UniqueIDBDatabaseConnection::didFireVersionChangeEvent):
>+        (WebCore::IDBServer::UniqueIDBDatabaseConnection::didFinishHandlingVersionChange):
>+        (WebCore::IDBServer::UniqueIDBDatabaseConnection::createVersionChangeTransaction):
>+        (WebCore::IDBServer::UniqueIDBDatabaseConnection::establishTransaction):
>+        (WebCore::IDBServer::UniqueIDBDatabaseConnection::didAbortTransaction):
>+        * Modules/indexeddb/server/UniqueIDBDatabaseConnection.h:
>+        (WebCore::IDBServer::UniqueIDBDatabaseConnection::database):
>+        * Modules/indexeddb/server/UniqueIDBDatabaseTransaction.cpp:
>+        (WebCore::IDBServer::UniqueIDBDatabaseTransaction::UniqueIDBDatabaseTransaction):
>+        (WebCore::IDBServer::UniqueIDBDatabaseTransaction::~UniqueIDBDatabaseTransaction):
>+        (WebCore::IDBServer::UniqueIDBDatabaseTransaction::abort):
>+        (WebCore::IDBServer::UniqueIDBDatabaseTransaction::commit):
>+        (WebCore::IDBServer::UniqueIDBDatabaseTransaction::createObjectStore):
>+        (WebCore::IDBServer::UniqueIDBDatabaseTransaction::deleteObjectStore):
>+        (WebCore::IDBServer::UniqueIDBDatabaseTransaction::renameObjectStore):
>+        (WebCore::IDBServer::UniqueIDBDatabaseTransaction::clearObjectStore):
>+        (WebCore::IDBServer::UniqueIDBDatabaseTransaction::createIndex):
>+        (WebCore::IDBServer::UniqueIDBDatabaseTransaction::deleteIndex):
>+        (WebCore::IDBServer::UniqueIDBDatabaseTransaction::renameIndex):
>+        (WebCore::IDBServer::UniqueIDBDatabaseTransaction::putOrAdd):
>+        (WebCore::IDBServer::UniqueIDBDatabaseTransaction::getRecord):
>+        (WebCore::IDBServer::UniqueIDBDatabaseTransaction::getAllRecords):
>+        (WebCore::IDBServer::UniqueIDBDatabaseTransaction::getCount):
>+        (WebCore::IDBServer::UniqueIDBDatabaseTransaction::deleteRecord):
>+        (WebCore::IDBServer::UniqueIDBDatabaseTransaction::openCursor):
>+        (WebCore::IDBServer::UniqueIDBDatabaseTransaction::iterateCursor):
>+        (WebCore::IDBServer::UniqueIDBDatabaseTransaction::objectStoreIdentifiers):
>+        * Modules/indexeddb/shared/IDBResultData.cpp:
>+        (WebCore::IDBResultData::openDatabaseSuccess):
>+        (WebCore::IDBResultData::openDatabaseUpgradeNeeded):
>+
> 2018-08-09  Saam Barati  <sbarati@apple.com>
> 
>         memoryFootprint should return size_t not optional<size_t>
>diff --git a/Source/WebCore/Modules/indexeddb/server/IDBServer.cpp b/Source/WebCore/Modules/indexeddb/server/IDBServer.cpp
>index 1b9945222c0d8147b78345cb502b8c89be372e63..059aeb551e0cdebd32526dffaa824335a9b21eed 100644
>--- a/Source/WebCore/Modules/indexeddb/server/IDBServer.cpp
>+++ b/Source/WebCore/Modules/indexeddb/server/IDBServer.cpp
>@@ -510,7 +510,7 @@ void IDBServer::closeAndDeleteDatabasesModifiedSince(WallTime modificationTime,
> 
>     HashSet<UniqueIDBDatabase*> openDatabases;
>     for (auto* connection : m_databaseConnections.values())
>-        openDatabases.add(&connection->database());
>+        openDatabases.add(connection->database());
> 
>     for (auto& database : openDatabases)
>         database->immediateCloseForUserDelete();
>@@ -526,10 +526,13 @@ void IDBServer::closeAndDeleteDatabasesForOrigins(const Vector<SecurityOriginDat
> 
>     HashSet<UniqueIDBDatabase*> openDatabases;
>     for (auto* connection : m_databaseConnections.values()) {
>-        const auto& identifier = connection->database().identifier();
>+        auto database = connection->database();
>+        ASSERT(database);
>+
>+        const auto& identifier = database->identifier();
>         for (auto& origin : origins) {
>             if (identifier.isRelatedToOrigin(origin)) {
>-                openDatabases.add(&connection->database());
>+                openDatabases.add(database);
>                 break;
>             }
>         }
>diff --git a/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabase.cpp b/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabase.cpp
>index 28da2a566252a1118d2f42864b8267f9c23f3af5..cc0c1b031be7c00e8f9897bc8c0c1cc244f2a903 100644
>--- a/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabase.cpp
>+++ b/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabase.cpp
>@@ -1300,7 +1300,7 @@ void UniqueIDBDatabase::commitTransaction(UniqueIDBDatabaseTransaction& transact
>     ASSERT(isMainThread());
>     LOG(IndexedDB, "(main) UniqueIDBDatabase::commitTransaction - %s", transaction.info().identifier().loggingString().utf8().data());
> 
>-    ASSERT(&transaction.databaseConnection().database() == this);
>+    ASSERT(transaction.databaseConnection().database() == this);
> 
>     uint64_t callbackID = storeCallbackOrFireError(WTFMove(callback));
>     if (!callbackID)
>@@ -1344,7 +1344,7 @@ void UniqueIDBDatabase::abortTransaction(UniqueIDBDatabaseTransaction& transacti
>     ASSERT(isMainThread());
>     LOG(IndexedDB, "(main) UniqueIDBDatabase::abortTransaction - %s", transaction.info().identifier().loggingString().utf8().data());
> 
>-    ASSERT(&transaction.databaseConnection().database() == this);
>+    ASSERT(transaction.databaseConnection().database() == this);
> 
>     uint64_t callbackID = storeCallbackOrFireError(WTFMove(callback));
>     if (!callbackID)
>diff --git a/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabase.h b/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabase.h
>index 9a8b1c5d062ab4bd1f93a88569f27486d5193dc8..f3b8788fe877151fb8ad5a9eb1bd30bb70c15d04 100644
>--- a/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabase.h
>+++ b/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabase.h
>@@ -72,7 +72,7 @@ typedef Function<void(const IDBError&, const IDBGetResult&)> GetResultCallback;
> typedef Function<void(const IDBError&, const IDBGetAllResult&)> GetAllResultsCallback;
> typedef Function<void(const IDBError&, uint64_t)> CountCallback;
> 
>-class UniqueIDBDatabase {
>+class UniqueIDBDatabase : public CanMakeWeakPtr<UniqueIDBDatabase> {
> public:
>     UniqueIDBDatabase(IDBServer&, const IDBDatabaseIdentifier&);
>     UniqueIDBDatabase(UniqueIDBDatabase&) = delete;
>diff --git a/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabaseConnection.cpp b/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabaseConnection.cpp
>index 84015d86c4ca48f01bdd95ac4c44f63468c0aa0a..2a40f5240bc394d76e5ea7ea066c9c0fa6b88305 100644
>--- a/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabaseConnection.cpp
>+++ b/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabaseConnection.cpp
>@@ -44,17 +44,18 @@ Ref<UniqueIDBDatabaseConnection> UniqueIDBDatabaseConnection::create(UniqueIDBDa
> }
> 
> UniqueIDBDatabaseConnection::UniqueIDBDatabaseConnection(UniqueIDBDatabase& database, ServerOpenDBRequest& request)
>-    : m_database(database)
>+    : m_database(makeWeakPtr(database))
>     , m_connectionToClient(request.connection())
>     , m_openRequestIdentifier(request.requestData().requestIdentifier())
> {
>-    m_database.server().registerDatabaseConnection(*this);
>+    m_database->server().registerDatabaseConnection(*this);
>     m_connectionToClient.registerDatabaseConnection(*this);
> }
> 
> UniqueIDBDatabaseConnection::~UniqueIDBDatabaseConnection()
> {
>-    m_database.server().unregisterDatabaseConnection(*this);
>+    if (m_database)
>+        m_database->server().unregisterDatabaseConnection(*this);
>     m_connectionToClient.unregisterDatabaseConnection(*this);
> }
> 
>@@ -70,7 +71,11 @@ void UniqueIDBDatabaseConnection::abortTransactionWithoutCallback(UniqueIDBDatab
>     const auto& transactionIdentifier = transaction.info().identifier();
>     RefPtr<UniqueIDBDatabaseConnection> protectedThis(this);
> 
>-    m_database.abortTransaction(transaction, [this, protectedThis, transactionIdentifier](const IDBError&) {
>+    ASSERT(m_database);
>+    if (!m_database)
>+        return;
>+    
>+    m_database->abortTransaction(transaction, [this, protectedThis, transactionIdentifier](const IDBError&) {
>         ASSERT(m_transactionMap.contains(transactionIdentifier));
>         m_transactionMap.remove(transactionIdentifier);
>     });
>@@ -87,28 +92,36 @@ void UniqueIDBDatabaseConnection::connectionClosedFromClient()
> {
>     LOG(IndexedDB, "UniqueIDBDatabaseConnection::connectionClosedFromClient - %s - %" PRIu64, m_openRequestIdentifier.loggingString().utf8().data(), identifier());
> 
>-    m_database.connectionClosedFromClient(*this);
>+    ASSERT(m_database);
>+    if (m_database)
>+        m_database->connectionClosedFromClient(*this);
> }
> 
> void UniqueIDBDatabaseConnection::confirmDidCloseFromServer()
> {
>     LOG(IndexedDB, "UniqueIDBDatabaseConnection::confirmDidCloseFromServer - %s - %" PRIu64, m_openRequestIdentifier.loggingString().utf8().data(), identifier());
> 
>-    m_database.confirmDidCloseFromServer(*this);
>+    ASSERT(m_database);
>+    if (m_database)
>+        m_database->confirmDidCloseFromServer(*this);
> }
> 
> void UniqueIDBDatabaseConnection::didFireVersionChangeEvent(const IDBResourceIdentifier& requestIdentifier)
> {
>     LOG(IndexedDB, "UniqueIDBDatabaseConnection::didFireVersionChangeEvent - %s - %" PRIu64, m_openRequestIdentifier.loggingString().utf8().data(), identifier());
> 
>-    m_database.didFireVersionChangeEvent(*this, requestIdentifier);
>+    ASSERT(m_database);
>+    if (m_database)
>+        m_database->didFireVersionChangeEvent(*this, requestIdentifier);
> }
> 
> void UniqueIDBDatabaseConnection::didFinishHandlingVersionChange(const IDBResourceIdentifier& transactionIdentifier)
> {
>     LOG(IndexedDB, "UniqueIDBDatabaseConnection::didFinishHandlingVersionChange - %s - %" PRIu64, transactionIdentifier.loggingString().utf8().data(), identifier());
> 
>-    m_database.didFinishHandlingVersionChange(*this, transactionIdentifier);
>+    ASSERT(m_database);
>+    if (m_database)
>+        m_database->didFinishHandlingVersionChange(*this, transactionIdentifier);
> }
> 
> void UniqueIDBDatabaseConnection::fireVersionChangeEvent(const IDBResourceIdentifier& requestIdentifier, uint64_t requestedVersion)
>@@ -122,7 +135,7 @@ UniqueIDBDatabaseTransaction& UniqueIDBDatabaseConnection::createVersionChangeTr
>     LOG(IndexedDB, "UniqueIDBDatabaseConnection::createVersionChangeTransaction - %s - %" PRIu64, m_openRequestIdentifier.loggingString().utf8().data(), identifier());
>     ASSERT(!m_closePending);
> 
>-    IDBTransactionInfo info = IDBTransactionInfo::versionChange(m_connectionToClient, m_database.info(), newVersion);
>+    IDBTransactionInfo info = IDBTransactionInfo::versionChange(m_connectionToClient, m_database->info(), newVersion);
> 
>     Ref<UniqueIDBDatabaseTransaction> transaction = UniqueIDBDatabaseTransaction::create(*this, info);
>     m_transactionMap.set(transaction->info().identifier(), &transaction.get());
>@@ -142,7 +155,9 @@ void UniqueIDBDatabaseConnection::establishTransaction(const IDBTransactionInfo&
> 
>     Ref<UniqueIDBDatabaseTransaction> transaction = UniqueIDBDatabaseTransaction::create(*this, info);
>     m_transactionMap.set(transaction->info().identifier(), &transaction.get());
>-    m_database.enqueueTransaction(WTFMove(transaction));
>+
>+    ASSERT(m_database);
>+    m_database->enqueueTransaction(WTFMove(transaction));
> }
> 
> void UniqueIDBDatabaseConnection::didAbortTransaction(UniqueIDBDatabaseTransaction& transaction, const IDBError& error)
>@@ -152,7 +167,8 @@ void UniqueIDBDatabaseConnection::didAbortTransaction(UniqueIDBDatabaseTransacti
>     auto transactionIdentifier = transaction.info().identifier();
>     auto takenTransaction = m_transactionMap.take(transactionIdentifier);
> 
>-    ASSERT(takenTransaction || m_database.hardClosedForUserDelete());
>+    ASSERT(m_database);
>+    ASSERT(takenTransaction || m_database->hardClosedForUserDelete());
>     if (takenTransaction)
>         m_connectionToClient.didAbortTransaction(transactionIdentifier, error);
> }
>diff --git a/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabaseConnection.h b/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabaseConnection.h
>index 2f1a29a2e88e52589e581ca921f69945bc239393..3a2564a129ba9f6a327af932f6bbbf2e8633a6ff 100644
>--- a/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabaseConnection.h
>+++ b/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabaseConnection.h
>@@ -32,6 +32,7 @@
> #include <wtf/Identified.h>
> #include <wtf/Ref.h>
> #include <wtf/RefCounted.h>
>+#include <wtf/WeakPtr.h>
> 
> namespace WebCore {
> 
>@@ -52,7 +53,7 @@ public:
>     ~UniqueIDBDatabaseConnection();
> 
>     const IDBResourceIdentifier& openRequestIdentifier() { return m_openRequestIdentifier; }
>-    UniqueIDBDatabase& database() { return m_database; }
>+    UniqueIDBDatabase* database() { return m_database.get(); }
>     IDBConnectionToClient& connectionToClient() { return m_connectionToClient; }
> 
>     void connectionPendingCloseFromClient();
>@@ -86,7 +87,7 @@ public:
> private:
>     UniqueIDBDatabaseConnection(UniqueIDBDatabase&, ServerOpenDBRequest&);
> 
>-    UniqueIDBDatabase& m_database;
>+    WeakPtr<UniqueIDBDatabase> m_database;
>     IDBConnectionToClient& m_connectionToClient;
>     IDBResourceIdentifier m_openRequestIdentifier;
> 
>diff --git a/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabaseTransaction.cpp b/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabaseTransaction.cpp
>index 214f8c238a12629b756a51daa06abc80d77bad46..f47c3b3959d4ee28b03fb1a766bd06b2ce6b5cb5 100644
>--- a/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabaseTransaction.cpp
>+++ b/Source/WebCore/Modules/indexeddb/server/UniqueIDBDatabaseTransaction.cpp
>@@ -47,16 +47,23 @@ UniqueIDBDatabaseTransaction::UniqueIDBDatabaseTransaction(UniqueIDBDatabaseConn
>     : m_databaseConnection(connection)
>     , m_transactionInfo(info)
> {
>+    auto database = m_databaseConnection->database();
>+    ASSERT(database);
>+
>     if (m_transactionInfo.mode() == IDBTransactionMode::Versionchange)
>-        m_originalDatabaseInfo = std::make_unique<IDBDatabaseInfo>(m_databaseConnection->database().info());
>+        m_originalDatabaseInfo = std::make_unique<IDBDatabaseInfo>(database->info());
> 
>-    m_databaseConnection->database().server().registerTransaction(*this);
>+    database->server().registerTransaction(*this);
> }
> 
> UniqueIDBDatabaseTransaction::~UniqueIDBDatabaseTransaction()
> {
>-    m_databaseConnection->database().transactionDestroyed(*this);
>-    m_databaseConnection->database().server().unregisterTransaction(*this);
>+    auto database = m_databaseConnection->database();
>+    if (!database)
>+        return;
>+
>+    database->transactionDestroyed(*this);
>+    database->server().unregisterTransaction(*this);
> }
> 
> IDBDatabaseInfo* UniqueIDBDatabaseTransaction::originalDatabaseInfo() const
>@@ -70,7 +77,11 @@ void UniqueIDBDatabaseTransaction::abort()
>     LOG(IndexedDB, "UniqueIDBDatabaseTransaction::abort");
> 
>     RefPtr<UniqueIDBDatabaseTransaction> protectedThis(this);
>-    m_databaseConnection->database().abortTransaction(*this, [this, protectedThis](const IDBError& error) {
>+    
>+    auto database = m_databaseConnection->database();
>+    ASSERT(database);
>+
>+    database->abortTransaction(*this, [this, protectedThis](const IDBError& error) {
>         LOG(IndexedDB, "UniqueIDBDatabaseTransaction::abort (callback)");
>         m_databaseConnection->didAbortTransaction(*this, error);
>     });
>@@ -98,7 +109,11 @@ void UniqueIDBDatabaseTransaction::commit()
>     LOG(IndexedDB, "UniqueIDBDatabaseTransaction::commit");
> 
>     RefPtr<UniqueIDBDatabaseTransaction> protectedThis(this);
>-    m_databaseConnection->database().commitTransaction(*this, [this, protectedThis](const IDBError& error) {
>+
>+    auto database = m_databaseConnection->database();
>+    ASSERT(database);
>+
>+    database->commitTransaction(*this, [this, protectedThis](const IDBError& error) {
>         LOG(IndexedDB, "UniqueIDBDatabaseTransaction::commit (callback)");
>         m_databaseConnection->didCommitTransaction(*this, error);
>     });
>@@ -112,7 +127,11 @@ void UniqueIDBDatabaseTransaction::createObjectStore(const IDBRequestData& reque
>     ASSERT(m_transactionInfo.identifier() == requestData.transactionIdentifier());
> 
>     RefPtr<UniqueIDBDatabaseTransaction> protectedThis(this);
>-    m_databaseConnection->database().createObjectStore(*this, info, [this, protectedThis, requestData](const IDBError& error) {
>+
>+    auto database = m_databaseConnection->database();
>+    ASSERT(database);
>+
>+    database->createObjectStore(*this, info, [this, protectedThis, requestData](const IDBError& error) {
>         LOG(IndexedDB, "UniqueIDBDatabaseTransaction::createObjectStore (callback)");
>         if (error.isNull())
>             m_databaseConnection->didCreateObjectStore(IDBResultData::createObjectStoreSuccess(requestData.requestIdentifier()));
>@@ -129,7 +148,11 @@ void UniqueIDBDatabaseTransaction::deleteObjectStore(const IDBRequestData& reque
>     ASSERT(m_transactionInfo.identifier() == requestData.transactionIdentifier());
> 
>     RefPtr<UniqueIDBDatabaseTransaction> protectedThis(this);
>-    m_databaseConnection->database().deleteObjectStore(*this, objectStoreName, [this, protectedThis, requestData](const IDBError& error) {
>+    
>+    auto database = m_databaseConnection->database();
>+    ASSERT(database);
>+
>+    database->deleteObjectStore(*this, objectStoreName, [this, protectedThis, requestData](const IDBError& error) {
>         LOG(IndexedDB, "UniqueIDBDatabaseTransaction::deleteObjectStore (callback)");
>         if (error.isNull())
>             m_databaseConnection->didDeleteObjectStore(IDBResultData::deleteObjectStoreSuccess(requestData.requestIdentifier()));
>@@ -146,7 +169,11 @@ void UniqueIDBDatabaseTransaction::renameObjectStore(const IDBRequestData& reque
>     ASSERT(m_transactionInfo.identifier() == requestData.transactionIdentifier());
> 
>     RefPtr<UniqueIDBDatabaseTransaction> protectedThis(this);
>-    m_databaseConnection->database().renameObjectStore(*this, objectStoreIdentifier, newName, [this, protectedThis, requestData](const IDBError& error) {
>+
>+    auto database = m_databaseConnection->database();
>+    ASSERT(database);
>+
>+    database->renameObjectStore(*this, objectStoreIdentifier, newName, [this, protectedThis, requestData](const IDBError& error) {
>         LOG(IndexedDB, "UniqueIDBDatabaseTransaction::renameObjectStore (callback)");
>         if (error.isNull())
>             m_databaseConnection->didRenameObjectStore(IDBResultData::renameObjectStoreSuccess(requestData.requestIdentifier()));
>@@ -162,7 +189,11 @@ void UniqueIDBDatabaseTransaction::clearObjectStore(const IDBRequestData& reques
>     ASSERT(m_transactionInfo.identifier() == requestData.transactionIdentifier());
> 
>     RefPtr<UniqueIDBDatabaseTransaction> protectedThis(this);
>-    m_databaseConnection->database().clearObjectStore(*this, objectStoreIdentifier, [this, protectedThis, requestData](const IDBError& error) {
>+
>+    auto database = m_databaseConnection->database();
>+    ASSERT(database);
>+
>+    database->clearObjectStore(*this, objectStoreIdentifier, [this, protectedThis, requestData](const IDBError& error) {
>         LOG(IndexedDB, "UniqueIDBDatabaseTransaction::clearObjectStore (callback)");
>         if (error.isNull())
>             m_databaseConnection->didClearObjectStore(IDBResultData::clearObjectStoreSuccess(requestData.requestIdentifier()));
>@@ -179,7 +210,11 @@ void UniqueIDBDatabaseTransaction::createIndex(const IDBRequestData& requestData
>     ASSERT(m_transactionInfo.identifier() == requestData.transactionIdentifier());
> 
>     RefPtr<UniqueIDBDatabaseTransaction> protectedThis(this);
>-    m_databaseConnection->database().createIndex(*this, info, [this, protectedThis, requestData](const IDBError& error) {
>+    
>+    auto database = m_databaseConnection->database();
>+    ASSERT(database);
>+
>+    database->createIndex(*this, info, [this, protectedThis, requestData](const IDBError& error) {
>         LOG(IndexedDB, "UniqueIDBDatabaseTransaction::createIndex (callback)");
>         if (error.isNull())
>             m_databaseConnection->didCreateIndex(IDBResultData::createIndexSuccess(requestData.requestIdentifier()));
>@@ -196,7 +231,11 @@ void UniqueIDBDatabaseTransaction::deleteIndex(const IDBRequestData& requestData
>     ASSERT(m_transactionInfo.identifier() == requestData.transactionIdentifier());
> 
>     RefPtr<UniqueIDBDatabaseTransaction> protectedThis(this);
>-    m_databaseConnection->database().deleteIndex(*this, objectStoreIdentifier, indexName, [this, protectedThis, requestData](const IDBError& error) {
>+
>+    auto database = m_databaseConnection->database();
>+    ASSERT(database);
>+    
>+    database->deleteIndex(*this, objectStoreIdentifier, indexName, [this, protectedThis, requestData](const IDBError& error) {
>         LOG(IndexedDB, "UniqueIDBDatabaseTransaction::createIndex (callback)");
>         if (error.isNull())
>             m_databaseConnection->didDeleteIndex(IDBResultData::deleteIndexSuccess(requestData.requestIdentifier()));
>@@ -213,7 +252,11 @@ void UniqueIDBDatabaseTransaction::renameIndex(const IDBRequestData& requestData
>     ASSERT(m_transactionInfo.identifier() == requestData.transactionIdentifier());
> 
>     RefPtr<UniqueIDBDatabaseTransaction> protectedThis(this);
>-    m_databaseConnection->database().renameIndex(*this, objectStoreIdentifier, indexIdentifier, newName, [this, protectedThis, requestData](const IDBError& error) {
>+    
>+    auto database = m_databaseConnection->database();
>+    ASSERT(database);
>+    
>+    database->renameIndex(*this, objectStoreIdentifier, indexIdentifier, newName, [this, protectedThis, requestData](const IDBError& error) {
>         LOG(IndexedDB, "UniqueIDBDatabaseTransaction::renameIndex (callback)");
>         if (error.isNull())
>             m_databaseConnection->didRenameIndex(IDBResultData::renameIndexSuccess(requestData.requestIdentifier()));
>@@ -231,7 +274,11 @@ void UniqueIDBDatabaseTransaction::putOrAdd(const IDBRequestData& requestData, c
>     ASSERT(m_transactionInfo.identifier() == requestData.transactionIdentifier());
> 
>     RefPtr<UniqueIDBDatabaseTransaction> protectedThis(this);
>-    m_databaseConnection->database().putOrAdd(requestData, keyData, value, overwriteMode, [this, protectedThis, requestData](const IDBError& error, const IDBKeyData& key) {
>+    
>+    auto database = m_databaseConnection->database();
>+    ASSERT(database);
>+    
>+    database->putOrAdd(requestData, keyData, value, overwriteMode, [this, protectedThis, requestData](const IDBError& error, const IDBKeyData& key) {
>         LOG(IndexedDB, "UniqueIDBDatabaseTransaction::putOrAdd (callback)");
> 
>         if (error.isNull())
>@@ -248,7 +295,11 @@ void UniqueIDBDatabaseTransaction::getRecord(const IDBRequestData& requestData,
>     ASSERT(m_transactionInfo.identifier() == requestData.transactionIdentifier());
> 
>     RefPtr<UniqueIDBDatabaseTransaction> protectedThis(this);
>-    m_databaseConnection->database().getRecord(requestData, getRecordData, [this, protectedThis, requestData](const IDBError& error, const IDBGetResult& result) {
>+    
>+    auto database = m_databaseConnection->database();
>+    ASSERT(database);
>+    
>+    database->getRecord(requestData, getRecordData, [this, protectedThis, requestData](const IDBError& error, const IDBGetResult& result) {
>         LOG(IndexedDB, "UniqueIDBDatabaseTransaction::getRecord (callback)");
> 
>         if (error.isNull())
>@@ -265,7 +316,11 @@ void UniqueIDBDatabaseTransaction::getAllRecords(const IDBRequestData& requestDa
>     ASSERT(m_transactionInfo.identifier() == requestData.transactionIdentifier());
> 
>     RefPtr<UniqueIDBDatabaseTransaction> protectedThis(this);
>-    m_databaseConnection->database().getAllRecords(requestData, getAllRecordsData, [this, protectedThis, requestData](const IDBError& error, const IDBGetAllResult& result) {
>+    
>+    auto database = m_databaseConnection->database();
>+    ASSERT(database);
>+    
>+    database->getAllRecords(requestData, getAllRecordsData, [this, protectedThis, requestData](const IDBError& error, const IDBGetAllResult& result) {
>         LOG(IndexedDB, "UniqueIDBDatabaseTransaction::getAllRecords (callback)");
> 
>         if (error.isNull())
>@@ -282,7 +337,11 @@ void UniqueIDBDatabaseTransaction::getCount(const IDBRequestData& requestData, c
>     ASSERT(m_transactionInfo.identifier() == requestData.transactionIdentifier());
> 
>     RefPtr<UniqueIDBDatabaseTransaction> protectedThis(this);
>-    m_databaseConnection->database().getCount(requestData, keyRangeData, [this, protectedThis, requestData](const IDBError& error, uint64_t count) {
>+    
>+    auto database = m_databaseConnection->database();
>+    ASSERT(database);
>+    
>+    database->getCount(requestData, keyRangeData, [this, protectedThis, requestData](const IDBError& error, uint64_t count) {
>         LOG(IndexedDB, "UniqueIDBDatabaseTransaction::getCount (callback)");
> 
>         if (error.isNull())
>@@ -299,7 +358,11 @@ void UniqueIDBDatabaseTransaction::deleteRecord(const IDBRequestData& requestDat
>     ASSERT(m_transactionInfo.identifier() == requestData.transactionIdentifier());
> 
>     RefPtr<UniqueIDBDatabaseTransaction> protectedThis(this);
>-    m_databaseConnection->database().deleteRecord(requestData, keyRangeData, [this, protectedThis, requestData](const IDBError& error) {
>+    
>+    auto database = m_databaseConnection->database();
>+    ASSERT(database);
>+    
>+    database->deleteRecord(requestData, keyRangeData, [this, protectedThis, requestData](const IDBError& error) {
>         LOG(IndexedDB, "UniqueIDBDatabaseTransaction::deleteRecord (callback)");
> 
>         if (error.isNull())
>@@ -316,7 +379,11 @@ void UniqueIDBDatabaseTransaction::openCursor(const IDBRequestData& requestData,
>     ASSERT(m_transactionInfo.identifier() == requestData.transactionIdentifier());
> 
>     RefPtr<UniqueIDBDatabaseTransaction> protectedThis(this);
>-    m_databaseConnection->database().openCursor(requestData, info, [this, protectedThis, requestData](const IDBError& error, const IDBGetResult& result) {
>+    
>+    auto database = m_databaseConnection->database();
>+    ASSERT(database);
>+    
>+    database->openCursor(requestData, info, [this, protectedThis, requestData](const IDBError& error, const IDBGetResult& result) {
>         LOG(IndexedDB, "UniqueIDBDatabaseTransaction::openCursor (callback)");
> 
>         if (error.isNull())
>@@ -333,7 +400,11 @@ void UniqueIDBDatabaseTransaction::iterateCursor(const IDBRequestData& requestDa
>     ASSERT(m_transactionInfo.identifier() == requestData.transactionIdentifier());
> 
>     RefPtr<UniqueIDBDatabaseTransaction> protectedThis(this);
>-    m_databaseConnection->database().iterateCursor(requestData, data, [this, protectedThis, requestData](const IDBError& error, const IDBGetResult& result) {
>+    
>+    auto database = m_databaseConnection->database();
>+    ASSERT(database);
>+    
>+    database->iterateCursor(requestData, data, [this, protectedThis, requestData](const IDBError& error, const IDBGetResult& result) {
>         LOG(IndexedDB, "UniqueIDBDatabaseTransaction::iterateCursor (callback)");
> 
>         if (error.isNull())
>@@ -348,7 +419,7 @@ const Vector<uint64_t>& UniqueIDBDatabaseTransaction::objectStoreIdentifiers()
>     if (!m_objectStoreIdentifiers.isEmpty())
>         return m_objectStoreIdentifiers;
> 
>-    auto& info = m_databaseConnection->database().info();
>+    auto& info = m_databaseConnection->database()->info();
>     for (auto objectStoreName : info.objectStoreNames()) {
>         auto objectStoreInfo = info.infoForExistingObjectStore(objectStoreName);
>         ASSERT(objectStoreInfo);
>diff --git a/Source/WebCore/Modules/indexeddb/shared/IDBResultData.cpp b/Source/WebCore/Modules/indexeddb/shared/IDBResultData.cpp
>index 6c6ae6ba0be5169c2ed93a60920f68cadf510e6e..7ff08ee498e7766d1bf2aa6b153bffeb5d670aa0 100644
>--- a/Source/WebCore/Modules/indexeddb/shared/IDBResultData.cpp
>+++ b/Source/WebCore/Modules/indexeddb/shared/IDBResultData.cpp
>@@ -111,7 +111,7 @@ IDBResultData IDBResultData::openDatabaseSuccess(const IDBResourceIdentifier& re
>     IDBResultData result { requestIdentifier };
>     result.m_type = IDBResultType::OpenDatabaseSuccess;
>     result.m_databaseConnectionIdentifier = connection.identifier();
>-    result.m_databaseInfo = std::make_unique<IDBDatabaseInfo>(connection.database().info());
>+    result.m_databaseInfo = std::make_unique<IDBDatabaseInfo>(connection.database()->info());
>     return result;
> }
> 
>@@ -121,7 +121,7 @@ IDBResultData IDBResultData::openDatabaseUpgradeNeeded(const IDBResourceIdentifi
>     IDBResultData result { requestIdentifier };
>     result.m_type = IDBResultType::OpenDatabaseUpgradeNeeded;
>     result.m_databaseConnectionIdentifier = transaction.databaseConnection().identifier();
>-    result.m_databaseInfo = std::make_unique<IDBDatabaseInfo>(transaction.databaseConnection().database().info());
>+    result.m_databaseInfo = std::make_unique<IDBDatabaseInfo>(transaction.databaseConnection().database()->info());
>     result.m_transactionInfo = std::make_unique<IDBTransactionInfo>(transaction.info());
>     return result;
> }

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Attachments on bug 188474: 346914 | 346923 | 346932 | 346939 | 346940