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28 #ifndef DatabaseThread_h
29 #define DatabaseThread_h
32 #include <wtf/Deque.h>
33 #include <wtf/HashMap.h>
34 #include <wtf/HashSet.h>
35 #include <wtf/MessageQueue.h>
36 #include <wtf/OwnPtr.h>
37 #include <wtf/PassOwnPtr.h>
38 #include <wtf/PassRefPtr.h>
39 #include <wtf/RefPtr.h>
40 #include <wtf/Threading.h>
46 class DatabaseTaskSynchronizer;
48 class SQLTransactionClient;
49 class SQLTransactionCoordinator;
51 class DatabaseThread : public ThreadSafeRefCounted<DatabaseThread> {
53 static PassRefPtr<DatabaseThread> create() { return adoptRef(new DatabaseThread); }
57 void requestTermination(DatabaseTaskSynchronizer* cleanupSync);
58 bool terminationRequested(DatabaseTaskSynchronizer* taskSynchronizer = 0) const;
60 void scheduleTask(PassOwnPtr<DatabaseTask>);
61 void scheduleImmediateTask(PassOwnPtr<DatabaseTask>); // This just adds the task to the front of the queue - the caller needs to be extremely careful not to create deadlocks when waiting for completion.
62 void unscheduleDatabaseTasks(Database*);
64 void recordDatabaseOpen(Database*);
65 void recordDatabaseClosed(Database*);
66 ThreadIdentifier getThreadID() { return m_threadID; }
68 SQLTransactionClient* transactionClient() { return m_transactionClient.get(); }
69 SQLTransactionCoordinator* transactionCoordinator() { return m_transactionCoordinator.get(); }
74 static void* databaseThreadStart(void*);
75 void* databaseThread();
77 Mutex m_threadCreationMutex;
78 ThreadIdentifier m_threadID;
79 RefPtr<DatabaseThread> m_selfRef;
81 MessageQueue<DatabaseTask> m_queue;
83 // This set keeps track of the open databases that have been used on this thread.
84 typedef HashSet<RefPtr<Database> > DatabaseSet;
85 DatabaseSet m_openDatabaseSet;
87 OwnPtr<SQLTransactionClient> m_transactionClient;
88 OwnPtr<SQLTransactionCoordinator> m_transactionCoordinator;
89 DatabaseTaskSynchronizer* m_cleanupSync;
92 } // namespace WebCore
94 #endif // ENABLE(DATABASE)
95 #endif // DatabaseThread_h