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/*
* Copyright (C) 2012 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 DatabaseManager_h
#define DatabaseManager_h
#include "modules/webdatabase/DatabaseContext.h"
#include "modules/webdatabase/DatabaseError.h"
#include "platform/heap/Handle.h"
#include "wtf/Assertions.h"
#include "wtf/Forward.h"
#include "wtf/HashMap.h"
namespace blink {
class Database;
class DatabaseCallback;
class DatabaseContext;
class ExceptionState;
class SecurityOrigin;
class ExecutionContext;
class DatabaseManager {
WTF_MAKE_NONCOPYABLE(DatabaseManager);
USING_FAST_MALLOC(DatabaseManager);
public:
static DatabaseManager& manager();
static void terminateDatabaseThread();
// These 2 methods are for DatabaseContext (un)registration, and should only
// be called by the DatabaseContext constructor and destructor.
void registerDatabaseContext(DatabaseContext*);
void unregisterDatabaseContext(DatabaseContext*);
#if DCHECK_IS_ON()
void didConstructDatabaseContext();
void didDestructDatabaseContext();
#else
void didConstructDatabaseContext() {}
void didDestructDatabaseContext() {}
#endif
static void throwExceptionForDatabaseError(DatabaseError,
const String& errorMessage,
ExceptionState&);
Database* openDatabase(ExecutionContext*,
const String& name,
const String& expectedVersion,
const String& displayName,
unsigned estimatedSize,
DatabaseCallback*,
DatabaseError&,
String& errorMessage);
String fullPathForDatabase(SecurityOrigin*,
const String& name,
bool createIfDoesNotExist = true);
private:
DatabaseManager();
~DatabaseManager();
// This gets a DatabaseContext for the specified ExecutionContext.
// If one doesn't already exist, it will create a new one.
DatabaseContext* databaseContextFor(ExecutionContext*);
// This gets a DatabaseContext for the specified ExecutionContext if
// it already exist previously. Otherwise, it returns 0.
DatabaseContext* existingDatabaseContextFor(ExecutionContext*);
Database* openDatabaseInternal(ExecutionContext*,
const String& name,
const String& expectedVersion,
const String& displayName,
unsigned estimatedSize,
bool setVersionInNewDatabase,
DatabaseError&,
String& errorMessage);
static void logErrorMessage(ExecutionContext*, const String& message);
// m_contextMap can have two or more entries even though we don't support
// Web SQL on workers because single Blink process can have multiple main
// contexts.
typedef PersistentHeapHashMap<Member<ExecutionContext>,
Member<DatabaseContext>>
ContextMap;
ContextMap m_contextMap;
#if DCHECK_IS_ON()
int m_databaseContextRegisteredCount = 0;
int m_databaseContextInstanceCount = 0;
#endif
};
} // namespace blink
#endif // DatabaseManager_h
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