/* | |
* Copyright (C) 2007, 2008 Apple Inc. All rights reserved. | |
* | |
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* 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 | |
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*/ | |
#ifndef DatabaseThread_h | |
#define DatabaseThread_h | |
#if ENABLE(DATABASE) | |
#include <wtf/Deque.h> | |
#include <wtf/HashMap.h> | |
#include <wtf/HashSet.h> | |
#include <wtf/MessageQueue.h> | |
#include <wtf/OwnPtr.h> | |
#include <wtf/PassOwnPtr.h> | |
#include <wtf/PassRefPtr.h> | |
#include <wtf/RefPtr.h> | |
#include <wtf/Threading.h> | |
namespace WebCore { | |
class Database; | |
class DatabaseTask; | |
class DatabaseTaskSynchronizer; | |
class Document; | |
class SQLTransactionClient; | |
class SQLTransactionCoordinator; | |
class DatabaseThread : public ThreadSafeShared<DatabaseThread> { | |
public: | |
static PassRefPtr<DatabaseThread> create() { return adoptRef(new DatabaseThread); } | |
~DatabaseThread(); | |
bool start(); | |
void requestTermination(DatabaseTaskSynchronizer* cleanupSync); | |
bool terminationRequested() const; | |
void scheduleTask(PassOwnPtr<DatabaseTask>); | |
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. | |
void unscheduleDatabaseTasks(Database*); | |
void recordDatabaseOpen(Database*); | |
void recordDatabaseClosed(Database*); | |
ThreadIdentifier getThreadID() { return m_threadID; } | |
SQLTransactionClient* transactionClient() { return m_transactionClient.get(); } | |
SQLTransactionCoordinator* transactionCoordinator() { return m_transactionCoordinator.get(); } | |
private: | |
DatabaseThread(); | |
static void* databaseThreadStart(void*); | |
void* databaseThread(); | |
Mutex m_threadCreationMutex; | |
ThreadIdentifier m_threadID; | |
RefPtr<DatabaseThread> m_selfRef; | |
MessageQueue<DatabaseTask> m_queue; | |
// This set keeps track of the open databases that have been used on this thread. | |
typedef HashSet<RefPtr<Database> > DatabaseSet; | |
DatabaseSet m_openDatabaseSet; | |
OwnPtr<SQLTransactionClient> m_transactionClient; | |
OwnPtr<SQLTransactionCoordinator> m_transactionCoordinator; | |
DatabaseTaskSynchronizer* m_cleanupSync; | |
}; | |
} // namespace WebCore | |
#endif // ENABLE(DATABASE) | |
#endif // DatabaseThread_h |