/* | |
* Copyright (C) 2007, 2008 Apple Inc. All rights reserved. | |
* | |
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* are met: | |
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* 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 | |
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* documentation and/or other materials provided with the distribution. | |
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of | |
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* from this software without specific prior written permission. | |
* | |
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY | |
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*/ | |
#ifndef DatabaseTracker_h | |
#define DatabaseTracker_h | |
#if ENABLE(DATABASE) | |
#include "PlatformString.h" | |
#include "StringHash.h" | |
#include <wtf/HashMap.h> | |
#include <wtf/HashSet.h> | |
#if !PLATFORM(CHROMIUM) | |
#include "DatabaseDetails.h" | |
#include "SQLiteDatabase.h" | |
#include <wtf/OwnPtr.h> | |
#endif // !PLATFORM(CHROMIUM) | |
namespace WebCore { | |
class Database; | |
class ScriptExecutionContext; | |
class SecurityOrigin; | |
struct SecurityOriginHash; | |
#if !PLATFORM(CHROMIUM) | |
class DatabaseTrackerClient; | |
class OriginQuotaManager; | |
struct SecurityOriginTraits; | |
#endif // !PLATFORM(CHROMIUM) | |
class DatabaseTracker : public Noncopyable { | |
public: | |
static DatabaseTracker& tracker(); | |
// This singleton will potentially be used from multiple worker threads and the page's context thread simultaneously. To keep this safe, it's | |
// currently using 4 locks. In order to avoid deadlock when taking multiple locks, you must take them in the correct order: | |
// originQuotaManager() before m_databaseGuard or m_openDatabaseMapGuard | |
// m_databaseGuard before m_openDatabaseMapGuard | |
// notificationMutex() is currently independent of the other locks. | |
bool canEstablishDatabase(ScriptExecutionContext*, const String& name, const String& displayName, unsigned long estimatedSize); | |
void setDatabaseDetails(SecurityOrigin*, const String& name, const String& displayName, unsigned long estimatedSize); | |
String fullPathForDatabase(SecurityOrigin*, const String& name, bool createIfDoesNotExist = true); | |
void addOpenDatabase(Database*); | |
void removeOpenDatabase(Database*); | |
void getOpenDatabases(SecurityOrigin* origin, const String& name, HashSet<RefPtr<Database> >* databases); | |
unsigned long long getMaxSizeForDatabase(const Database*); | |
private: | |
DatabaseTracker(); | |
typedef HashSet<Database*> DatabaseSet; | |
typedef HashMap<String, DatabaseSet*> DatabaseNameMap; | |
typedef HashMap<RefPtr<SecurityOrigin>, DatabaseNameMap*, SecurityOriginHash> DatabaseOriginMap; | |
Mutex m_openDatabaseMapGuard; | |
mutable OwnPtr<DatabaseOriginMap> m_openDatabaseMap; | |
#if !PLATFORM(CHROMIUM) | |
public: | |
void setDatabaseDirectoryPath(const String&); | |
String databaseDirectoryPath() const; | |
void origins(Vector<RefPtr<SecurityOrigin> >& result); | |
bool databaseNamesForOrigin(SecurityOrigin*, Vector<String>& result); | |
DatabaseDetails detailsForNameAndOrigin(const String&, SecurityOrigin*); | |
unsigned long long usageForDatabase(const String&, SecurityOrigin*); | |
unsigned long long usageForOrigin(SecurityOrigin*); | |
unsigned long long quotaForOrigin(SecurityOrigin*); | |
void setQuota(SecurityOrigin*, unsigned long long); | |
void deleteAllDatabases(); | |
void deleteOrigin(SecurityOrigin*); | |
void deleteDatabase(SecurityOrigin*, const String& name); | |
void setClient(DatabaseTrackerClient*); | |
// From a secondary thread, must be thread safe with its data | |
void scheduleNotifyDatabaseChanged(SecurityOrigin*, const String& name); | |
OriginQuotaManager& originQuotaManager(); | |
bool hasEntryForOrigin(SecurityOrigin*); | |
private: | |
OriginQuotaManager& originQuotaManagerNoLock(); | |
bool hasEntryForOriginNoLock(SecurityOrigin* origin); | |
String fullPathForDatabaseNoLock(SecurityOrigin*, const String& name, bool createIfDoesNotExist); | |
bool databaseNamesForOriginNoLock(SecurityOrigin* origin, Vector<String>& resultVector); | |
unsigned long long usageForOriginNoLock(SecurityOrigin* origin); | |
unsigned long long quotaForOriginNoLock(SecurityOrigin* origin); | |
String trackerDatabasePath() const; | |
void openTrackerDatabase(bool createIfDoesNotExist); | |
String originPath(SecurityOrigin*) const; | |
bool hasEntryForDatabase(SecurityOrigin*, const String& databaseIdentifier); | |
bool addDatabase(SecurityOrigin*, const String& name, const String& path); | |
void populateOrigins(); | |
bool deleteDatabaseFile(SecurityOrigin*, const String& name); | |
// This lock protects m_database, m_quotaMap, m_proposedDatabases, m_databaseDirectoryPath, m_originsBeingDeleted, m_beingCreated, and m_beingDeleted. | |
Mutex m_databaseGuard; | |
SQLiteDatabase m_database; | |
typedef HashMap<RefPtr<SecurityOrigin>, unsigned long long, SecurityOriginHash> QuotaMap; | |
mutable OwnPtr<QuotaMap> m_quotaMap; | |
OwnPtr<OriginQuotaManager> m_quotaManager; | |
String m_databaseDirectoryPath; | |
DatabaseTrackerClient* m_client; | |
typedef std::pair<RefPtr<SecurityOrigin>, DatabaseDetails> ProposedDatabase; | |
HashSet<ProposedDatabase*> m_proposedDatabases; | |
typedef HashMap<String, long> NameCountMap; | |
typedef HashMap<RefPtr<SecurityOrigin>, NameCountMap*, SecurityOriginHash> CreateSet; | |
CreateSet m_beingCreated; | |
typedef HashSet<String> NameSet; | |
HashMap<RefPtr<SecurityOrigin>, NameSet*, SecurityOriginHash> m_beingDeleted; | |
HashSet<RefPtr<SecurityOrigin>, SecurityOriginHash> m_originsBeingDeleted; | |
bool canCreateDatabase(SecurityOrigin *origin, const String& name); | |
void recordCreatingDatabase(SecurityOrigin *origin, const String& name); | |
void doneCreatingDatabase(SecurityOrigin *origin, const String& name); | |
bool creatingDatabase(SecurityOrigin *origin, const String& name); | |
bool canDeleteDatabase(SecurityOrigin *origin, const String& name); | |
void recordDeletingDatabase(SecurityOrigin *origin, const String& name); | |
void doneDeletingDatabase(SecurityOrigin *origin, const String& name); | |
bool deletingDatabase(SecurityOrigin *origin, const String& name); | |
bool canDeleteOrigin(SecurityOrigin *origin); | |
bool deletingOrigin(SecurityOrigin *origin); | |
void recordDeletingOrigin(SecurityOrigin *origin); | |
void doneDeletingOrigin(SecurityOrigin *origin); | |
static void scheduleForNotification(); | |
static void notifyDatabasesChanged(void*); | |
#endif // !PLATFORM(CHROMIUM) | |
}; | |
} // namespace WebCore | |
#endif // ENABLE(DATABASE) | |
#endif // DatabaseTracker_h |