/** add session to the end of queue when a transaction starts (depending on isolation mode) */
public void beginAction(Session session, Statement cs) {
synchronized (liveTransactionTimestamps) {
session.actionTimestamp = nextChangeTimestamp();
if (!session.isTransaction) {
session.transactionTimestamp = session.actionTimestamp;
session.isTransaction = true;
liveTransactionTimestamps.addLast(session.actionTimestamp);
}
}
if (session.hasLocks()) {
return;
}
try {
writeLock.lock();
boolean canProceed = beginActionTPL(session, cs);
if (!canProceed) {
session.abortTransaction = true;
}
} finally {
writeLock.unlock();
}
}
public void beginTransaction(Session session) {
synchronized (liveTransactionTimestamps) {
session.actionTimestamp = nextChangeTimestamp();
session.transactionTimestamp = session.actionTimestamp;
session.isTransaction = true;
liveTransactionTimestamps.addLast(session.transactionTimestamp);
}
}
public void beginTransaction(Session session) {
writeLock.lock();
try {
if (!session.isTransaction) {
session.actionTimestamp = nextChangeTimestamp();
session.transactionTimestamp = session.actionTimestamp;
session.isTransaction = true;
transactionCount++;
liveTransactionTimestamps.addLast(session.transactionTimestamp);
}
} finally {
writeLock.unlock();
}
}