| /* |
| * 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 THIRD_PARTY_BLINK_RENDERER_MODULES_WEBDATABASE_DATABASE_THREAD_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBDATABASE_DATABASE_THREAD_H_ |
| |
| #include <memory> |
| #include "third_party/blink/renderer/platform/heap/handle.h" |
| #include "third_party/blink/renderer/platform/web_thread_supporting_gc.h" |
| #include "third_party/blink/renderer/platform/wtf/hash_map.h" |
| #include "third_party/blink/renderer/platform/wtf/threading_primitives.h" |
| |
| namespace blink { |
| |
| class Database; |
| class DatabaseTask; |
| class SQLTransactionClient; |
| class SQLTransactionCoordinator; |
| class WaitableEvent; |
| |
| class DatabaseThread : public GarbageCollectedFinalized<DatabaseThread> { |
| public: |
| static DatabaseThread* Create() { |
| return MakeGarbageCollected<DatabaseThread>(); |
| } |
| |
| DatabaseThread(); |
| ~DatabaseThread(); |
| void Trace(blink::Visitor*); |
| |
| // 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 transaction_client_.get(); |
| } |
| SQLTransactionCoordinator* TransactionCoordinator() { |
| return transaction_coordinator_.Get(); |
| } |
| |
| private: |
| void SetupDatabaseThread(); |
| void CleanupDatabaseThread(); |
| void CleanupDatabaseThreadCompleted(); |
| |
| std::unique_ptr<WebThreadSupportingGC> 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>> open_database_set_; |
| |
| std::unique_ptr<SQLTransactionClient> transaction_client_; |
| CrossThreadPersistent<SQLTransactionCoordinator> transaction_coordinator_; |
| WaitableEvent* cleanup_sync_; |
| |
| Mutex termination_requested_mutex_; |
| bool termination_requested_; |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_MODULES_WEBDATABASE_DATABASE_THREAD_H_ |