private static void generateEntityLockUpgradeThread(TransactionSubsystem txnProvider) {
int i;
Thread t;
int childCount = MAX_NUM_OF_THREAD_IN_A_JOB;
if (MAX_NUM_OF_THREAD_IN_A_JOB != 0 && childCount == 0) {
childCount = 1;
}
TransactionContext txnContext = generateTxnContext(txnProvider);
for (i = 0; i < childCount - 1; i++) {
System.out.println(
"Creating " + txnContext.getJobId() + "," + i + "th EntityLockUpgradeThread(false)..");
t =
new Thread(
new LockRequestProducer(
txnProvider.getLockManager(), txnContext, false, true, false));
t.start();
}
System.out.println(
"Creating " + txnContext.getJobId() + "," + i + "th EntityLockUpgradeThread(true)..");
t =
new Thread(
new LockRequestProducer(txnProvider.getLockManager(), txnContext, false, true, true));
t.start();
}
private static void generateDatasetLockThread(TransactionSubsystem txnProvider) {
Thread t;
// int childCount = rand.nextInt(MAX_NUM_OF_THREAD_IN_A_JOB);
// if (MAX_NUM_OF_THREAD_IN_A_JOB != 0 && childCount == 0) {
// childCount = 1;
// }
int childCount = 1;
TransactionContext txnContext = generateTxnContext(txnProvider);
for (int i = 0; i < childCount; i++) {
System.out.println("Creating " + txnContext.getJobId() + "," + i + "th DatasetLockThread..");
t =
new Thread(
new LockRequestProducer(
txnProvider.getLockManager(), txnContext, true, false, false));
t.start();
}
}
private void runEntityLockTask() {
int i;
byte lockMode;
int lockCount;
int upgradeCount;
int releaseCount;
boolean mayRelease = false;
lockCount = 1 + rand.nextInt(20);
if (isUpgradeThreadJob) {
if (isUpgradeThread) {
upgradeCount = 1; // rand.nextInt(4) + 1;
if (upgradeCount > lockCount) {
upgradeCount = lockCount;
}
} else {
upgradeCount = 0;
}
lockMode = LockMode.S;
} else {
upgradeCount = 0;
lockMode = (byte) (this.txnContext.getJobId().getId() % 2);
}
releaseCount = rand.nextInt(5) % 3 == 0 ? 1 : 0;
// lock
for (i = 0; i < lockCount; i++) {
try {
produceEntityLockRequest(lockMode);
if (isDone) {
return;
}
} catch (ACIDException e) {
e.printStackTrace();
return;
}
}
// upgrade
for (i = 0; i < upgradeCount; i++) {
try {
produceEntityLockUpgradeRequest();
if (isDone) {
return;
}
} catch (ACIDException e) {
e.printStackTrace();
return;
}
}
// unlock or releaseLocks
if (releaseCount == 0) {
// unlock
for (i = 0; i < lockCount; i++) {
try {
produceEntityUnlockRequest();
if (isDone) {
return;
}
} catch (ACIDException e) {
e.printStackTrace();
return;
}
}
} else {
try {
synchronized (txnContext) {
if (txnContext.getTxnState() != ITransactionManager.ABORTED) {
txnContext.setTxnState(ITransactionManager.ABORTED);
mayRelease = true;
}
}
if (mayRelease) {
produceEntityReleaseLocksRequest();
}
} catch (ACIDException e) {
e.printStackTrace();
return;
}
}
}