| /* |
| * Copyright (C) 2007, 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. |
| * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of |
| * its contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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. |
| */ |
| #ifndef DatabaseThread_h |
| #define DatabaseThread_h |
| |
| #include "platform/WebThreadSupportingGC.h" |
| #include "platform/heap/Handle.h" |
| #include "wtf/HashMap.h" |
| #include "wtf/ThreadingPrimitives.h" |
| #include <memory> |
| |
| namespace blink { |
| |
| class Database; |
| class DatabaseTask; |
| class SQLTransactionClient; |
| class SQLTransactionCoordinator; |
| class WaitableEvent; |
| |
| class DatabaseThread : public GarbageCollectedFinalized<DatabaseThread> { |
| public: |
| static DatabaseThread* create() { return new DatabaseThread; } |
| ~DatabaseThread(); |
| DECLARE_TRACE(); |
| |
| // Callable only from the main thread. |
| void start(); |
| void terminate(); |
| |
| // Callable from the main thread or the database thread. |
| void scheduleTask(std::unique_ptr<DatabaseTask>); |
| bool isDatabaseThread() const; |
| |
| // Callable only from the database thread. |
| void recordDatabaseOpen(Database*); |
| void recordDatabaseClosed(Database*); |
| bool isDatabaseOpen(Database*); |
| |
| SQLTransactionClient* transactionClient() { |
| return m_transactionClient.get(); |
| } |
| SQLTransactionCoordinator* transactionCoordinator() { |
| return m_transactionCoordinator.get(); |
| } |
| |
| private: |
| DatabaseThread(); |
| |
| void setupDatabaseThread(); |
| void cleanupDatabaseThread(); |
| void cleanupDatabaseThreadCompleted(); |
| |
| std::unique_ptr<WebThreadSupportingGC> m_thread; |
| |
| // This set keeps track of the open databases that have been used on this |
| // thread. This must be updated in the database thread though it is |
| // constructed and destructed in the context thread. |
| HashSet<CrossThreadPersistent<Database>> m_openDatabaseSet; |
| |
| std::unique_ptr<SQLTransactionClient> m_transactionClient; |
| CrossThreadPersistent<SQLTransactionCoordinator> m_transactionCoordinator; |
| WaitableEvent* m_cleanupSync; |
| |
| Mutex m_terminationRequestedMutex; |
| bool m_terminationRequested; |
| }; |
| |
| } // namespace blink |
| |
| #endif // DatabaseThread_h |