#ifndef DatabaseTask_h
#define DatabaseTask_h
#include "DatabaseBasicTypes.h"
#include "DatabaseError.h"
#include "SQLTransactionBackend.h"
#include <wtf/Condition.h>
#include <wtf/Lock.h>
#include <wtf/Vector.h>
#include <wtf/text/WTFString.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;
Lock m_synchronousMutex;
Condition 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;
#if !LOG_DISABLED
virtual const char* debugTaskName() const = 0;
bool m_complete;
#endif
};
class DatabaseOpenTask : public DatabaseTask {
public:
DatabaseOpenTask(Database&, bool setVersionInNewDatabase, DatabaseTaskSynchronizer&, DatabaseError&, String& errorMessage, bool& success);
private:
void doPerformTask() override;
#if !LOG_DISABLED
const char* debugTaskName() const override;
#endif
bool m_setVersionInNewDatabase;
DatabaseError& m_error;
String& m_errorMessage;
bool& m_success;
};
class DatabaseCloseTask : public DatabaseTask {
public:
DatabaseCloseTask(Database&, DatabaseTaskSynchronizer&);
private:
void doPerformTask() override;
#if !LOG_DISABLED
const char* debugTaskName() const override;
#endif
};
class DatabaseTransactionTask : public DatabaseTask {
public:
explicit DatabaseTransactionTask(RefPtr<SQLTransactionBackend>&&);
virtual ~DatabaseTransactionTask();
SQLTransactionBackend* transaction() const { return m_transaction.get(); }
private:
void doPerformTask() override;
#if !LOG_DISABLED
const char* debugTaskName() const override;
#endif
RefPtr<SQLTransactionBackend> m_transaction;
bool m_didPerformTask;
};
class DatabaseTableNamesTask : public DatabaseTask {
public:
DatabaseTableNamesTask(Database&, DatabaseTaskSynchronizer&, Vector<String>& names);
private:
void doPerformTask() override;
#if !LOG_DISABLED
const char* debugTaskName() const override;
#endif
Vector<String>& m_tableNames;
};
}
#endif // DatabaseTask_h