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/*
* Copyright (C) 2007, 2008, 2013 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.
* 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
* 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 DatabaseTask_h
#define DatabaseTask_h
#include <memory>
#include "base/memory/ptr_util.h"
#include "modules/webdatabase/Database.h"
#include "modules/webdatabase/DatabaseBasicTypes.h"
#include "modules/webdatabase/DatabaseError.h"
#include "modules/webdatabase/SQLTransactionBackend.h"
#include "platform/WaitableEvent.h"
#include "platform/heap/Handle.h"
#include "platform/wtf/Threading.h"
#include "platform/wtf/Vector.h"
#include "platform/wtf/text/WTFString.h"
namespace blink {
class DatabaseTask {
WTF_MAKE_NONCOPYABLE(DatabaseTask);
USING_FAST_MALLOC(DatabaseTask);
public:
virtual ~DatabaseTask();
void Run();
Database* GetDatabase() const { return database_.Get(); }
protected:
DatabaseTask(Database*, WaitableEvent* complete_event);
private:
virtual void DoPerformTask() = 0;
virtual void TaskCancelled() {}
CrossThreadPersistent<Database> database_;
WaitableEvent* complete_event_;
#if DCHECK_IS_ON()
virtual const char* DebugTaskName() const = 0;
bool complete_;
#endif
};
class Database::DatabaseOpenTask final : public DatabaseTask {
public:
static std::unique_ptr<DatabaseOpenTask> Create(
Database* db,
bool set_version_in_new_database,
WaitableEvent* complete_event,
DatabaseError& error,
String& error_message,
bool& success) {
return base::WrapUnique(
new DatabaseOpenTask(db, set_version_in_new_database, complete_event,
error, error_message, success));
}
private:
DatabaseOpenTask(Database*,
bool set_version_in_new_database,
WaitableEvent*,
DatabaseError&,
String& error_message,
bool& success);
void DoPerformTask() override;
#if DCHECK_IS_ON()
const char* DebugTaskName() const override;
#endif
bool set_version_in_new_database_;
DatabaseError& error_;
String& error_message_;
bool& success_;
};
class Database::DatabaseCloseTask final : public DatabaseTask {
public:
static std::unique_ptr<DatabaseCloseTask> Create(
Database* db,
WaitableEvent* synchronizer) {
return base::WrapUnique(new DatabaseCloseTask(db, synchronizer));
}
private:
DatabaseCloseTask(Database*, WaitableEvent*);
void DoPerformTask() override;
#if DCHECK_IS_ON()
const char* DebugTaskName() const override;
#endif
};
class Database::DatabaseTransactionTask final : public DatabaseTask {
public:
~DatabaseTransactionTask() override;
// Transaction task is never synchronous, so no 'synchronizer' parameter.
static std::unique_ptr<DatabaseTransactionTask> Create(
SQLTransactionBackend* transaction) {
return base::WrapUnique(new DatabaseTransactionTask(transaction));
}
SQLTransactionBackend* Transaction() const { return transaction_.Get(); }
private:
explicit DatabaseTransactionTask(SQLTransactionBackend*);
void DoPerformTask() override;
void TaskCancelled() override;
#if DCHECK_IS_ON()
const char* DebugTaskName() const override;
#endif
CrossThreadPersistent<SQLTransactionBackend> transaction_;
};
class Database::DatabaseTableNamesTask final : public DatabaseTask {
public:
static std::unique_ptr<DatabaseTableNamesTask>
Create(Database* db, WaitableEvent* synchronizer, Vector<String>& names) {
return base::WrapUnique(
new DatabaseTableNamesTask(db, synchronizer, names));
}
private:
DatabaseTableNamesTask(Database*, WaitableEvent*, Vector<String>& names);
void DoPerformTask() override;
#if DCHECK_IS_ON()
const char* DebugTaskName() const override;
#endif
Vector<String>& table_names_;
};
} // namespace blink
#endif // DatabaseTask_h