/* | |
* Copyright (C) 2008, 2009 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. | |
* | |
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 INC. OR | |
* 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 StorageAreaSync_h | |
#define StorageAreaSync_h | |
#if ENABLE(DOM_STORAGE) | |
#include "PlatformString.h" | |
#include "SQLiteDatabase.h" | |
#include "StringHash.h" | |
#include "Timer.h" | |
#include <wtf/HashMap.h> | |
namespace WebCore { | |
class Frame; | |
class StorageAreaImpl; | |
class StorageSyncManager; | |
class StorageAreaSync : public RefCounted<StorageAreaSync> { | |
public: | |
static PassRefPtr<StorageAreaSync> create(PassRefPtr<StorageSyncManager> storageSyncManager, PassRefPtr<StorageAreaImpl> storageArea, String databaseIdentifier); | |
~StorageAreaSync(); | |
void scheduleFinalSync(); | |
void blockUntilImportComplete(); | |
void scheduleItemForSync(const String& key, const String& value); | |
void scheduleClear(); | |
private: | |
StorageAreaSync(PassRefPtr<StorageSyncManager> storageSyncManager, PassRefPtr<StorageAreaImpl> storageArea, String databaseIdentifier); | |
void dispatchStorageEvent(const String& key, const String& oldValue, const String& newValue, Frame* sourceFrame); | |
Timer<StorageAreaSync> m_syncTimer; | |
HashMap<String, String> m_changedItems; | |
bool m_itemsCleared; | |
bool m_finalSyncScheduled; | |
RefPtr<StorageAreaImpl> m_storageArea; | |
RefPtr<StorageSyncManager> m_syncManager; | |
// The database handle will only ever be opened and used on the background thread. | |
SQLiteDatabase m_database; | |
// The following members are subject to thread synchronization issues. | |
public: | |
// Called from the background thread | |
void performImport(); | |
void performSync(); | |
private: | |
void syncTimerFired(Timer<StorageAreaSync>*); | |
void sync(bool clearItems, const HashMap<String, String>& items); | |
const String m_databaseIdentifier; | |
Mutex m_syncLock; | |
HashMap<String, String> m_itemsPendingSync; | |
bool m_clearItemsWhileSyncing; | |
bool m_syncScheduled; | |
bool m_syncInProgress; | |
mutable Mutex m_importLock; | |
mutable ThreadCondition m_importCondition; | |
mutable bool m_importComplete; | |
void markImported(); | |
}; | |
} // namespace WebCore | |
#endif // ENABLE(DOM_STORAGE) | |
#endif // StorageAreaSync_h |