#ifndef DatabaseTask_h
#define DatabaseTask_h
#if ENABLE(DATABASE)
#include "Database.h"
#include "ExceptionCode.h"
#include "PlatformString.h"
#include "SQLTransaction.h"
#include <wtf/OwnPtr.h>
#include <wtf/PassOwnPtr.h>
#include <wtf/PassRefPtr.h>
#include <wtf/Threading.h>
#include <wtf/Vector.h>
namespace WebCore {
class DatabaseTaskSynchronizer {
WTF_MAKE_NONCOPYABLE(DatabaseTaskSynchronizer);
public:
DatabaseTaskSynchronizer();
void waitForTaskCompletion();
void taskCompleted();
#ifndef NDEBUG
bool hasCheckedForTermination() const { return m_hasCheckedForTermination; }
void setHasCheckedForTermination() { m_hasCheckedForTermination = true; }
#endif
private:
bool m_taskCompleted;
Mutex m_synchronousMutex;
ThreadCondition m_synchronousCondition;
#ifndef NDEBUG
bool m_hasCheckedForTermination;
#endif
};
class DatabaseTask {
WTF_MAKE_NONCOPYABLE(DatabaseTask); WTF_MAKE_FAST_ALLOCATED;
public:
virtual ~DatabaseTask();
void performTask();
Database* database() const { return m_database; }
#ifndef NDEBUG
bool hasSynchronizer() const { return m_synchronizer; }
bool hasCheckedForTermination() const { return m_synchronizer->hasCheckedForTermination(); }
#endif
protected:
DatabaseTask(Database*, DatabaseTaskSynchronizer*);
private:
virtual void doPerformTask() = 0;
Database* m_database;
DatabaseTaskSynchronizer* m_synchronizer;
#ifndef NDEBUG
virtual const char* debugTaskName() const = 0;
bool m_complete;
#endif
};
class Database::DatabaseOpenTask : public DatabaseTask {
public:
static PassOwnPtr<DatabaseOpenTask> create(Database* db, bool setVersionInNewDatabase, DatabaseTaskSynchronizer* synchronizer, ExceptionCode& code, bool& success)
{
return adoptPtr(new DatabaseOpenTask(db, setVersionInNewDatabase, synchronizer, code, success));
}
private:
DatabaseOpenTask(Database*, bool setVersionInNewDatabase, DatabaseTaskSynchronizer*, ExceptionCode&, bool& success);
virtual void doPerformTask();
#ifndef NDEBUG
virtual const char* debugTaskName() const;
#endif
bool m_setVersionInNewDatabase;
ExceptionCode& m_code;
bool& m_success;
};
class Database::DatabaseCloseTask : public DatabaseTask {
public:
static PassOwnPtr<DatabaseCloseTask> create(Database* db, DatabaseTaskSynchronizer* synchronizer)
{
return adoptPtr(new DatabaseCloseTask(db, synchronizer));
}
private:
DatabaseCloseTask(Database*, DatabaseTaskSynchronizer*);
virtual void doPerformTask();
#ifndef NDEBUG
virtual const char* debugTaskName() const;
#endif
};
class Database::DatabaseTransactionTask : public DatabaseTask {
public:
static PassOwnPtr<DatabaseTransactionTask> create(PassRefPtr<SQLTransaction> transaction)
{
return adoptPtr(new DatabaseTransactionTask(transaction));
}
SQLTransaction* transaction() const { return m_transaction.get(); }
private:
DatabaseTransactionTask(PassRefPtr<SQLTransaction>);
virtual void doPerformTask();
#ifndef NDEBUG
virtual const char* debugTaskName() const;
#endif
RefPtr<SQLTransaction> m_transaction;
};
class Database::DatabaseTableNamesTask : public DatabaseTask {
public:
static PassOwnPtr<DatabaseTableNamesTask> create(Database* db, DatabaseTaskSynchronizer* synchronizer, Vector<String>& names)
{
return adoptPtr(new DatabaseTableNamesTask(db, synchronizer, names));
}
private:
DatabaseTableNamesTask(Database*, DatabaseTaskSynchronizer*, Vector<String>& names);
virtual void doPerformTask();
#ifndef NDEBUG
virtual const char* debugTaskName() const;
#endif
Vector<String>& m_tableNames;
};
}
#endif // ENABLE(DATABASE)
#endif // DatabaseTask_h