/*
* JVSTM: a Java library for Software Transactional Memory
* Copyright (C) 2005 INESC-ID Software Engineering Group
* http://www.esw.inesc-id.pt
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* Author's contact:
* INESC-ID Software Engineering Group
* Rua Alves Redol 9
* 1000 - 029 Lisboa
* Portugal
*/
package jvstm;
public class TopLevelReadTransaction extends ReadTransaction {
private ActiveTransactionsRecord activeTxRecord;
public TopLevelReadTransaction(ActiveTransactionsRecord activeRecord) {
super(activeRecord.transactionNumber);
this.activeTxRecord = activeRecord;
}
@Override
protected Transaction commitAndBeginTx(boolean readOnly) {
context().inCommitAndBegin = true;
commitTx(true);
context().inCommitAndBegin = false;
return Transaction.beginWithActiveRecord(readOnly, this.activeTxRecord);
}
@Override
protected void finish() {
super.finish();
if (! context().inCommitAndBegin) {
context().oldestRequiredVersion = null;
}
}
}