public void testLocalDeadlock() throws Exception {
final DldGlobalTransaction ddgt = (DldGlobalTransaction) gtf.newGlobalTransaction();
InvocationContext localTxContext = buildLocalTxIc(ddgt);
ddgt.setCoinToss(0);
lockOwner.setCoinToss(1);
assert ddgt.wouldLose(lockOwner);
// this makes sure that we cannot acquire lock from the first try
expect(lc.acquireLock("k", SPIN_DURATION, TimeUnit.MILLISECONDS)).andReturn(null);
Lock mockLock = createNiceMock(Lock.class);
expect(lc.acquireLock("k", SPIN_DURATION, TimeUnit.MILLISECONDS)).andReturn(mockLock);
lockOwner.setRemote(false);
lockOwner.setLockIntention("k");
lockManager.setOwner(lockOwner);
lockManager.setOwnsLock(true);
replay(lc);
try {
lockManager.lockAndRecord("k", localTxContext);
assert false;
} catch (DeadlockDetectedException e) {
// expected
}
assertEquals(1l, lockManager.getDetectedLocalDeadlocks());
}
public void testLockHeldByThread() throws Exception {
InvocationContext localTxContext = buildLocalTxIc(new DldGlobalTransaction());
// this makes sure that we cannot acquire lock from the first try
expect(lc.acquireLock("k", SPIN_DURATION, TimeUnit.MILLISECONDS)).andReturn(null);
lockManager.setOwner(Thread.currentThread());
// next lock acquisition will succeed
Lock mockLock = createNiceMock(Lock.class);
expect(lc.acquireLock("k", SPIN_DURATION, TimeUnit.MILLISECONDS)).andReturn(mockLock);
replay(lc);
assert lockManager.lockAndRecord("k", localTxContext);
assert lockManager.getOverlapWithNotDeadlockAwareLockOwners() == 1;
}
public void testNoTransaction() throws Exception {
InvocationContext nonTx = new NonTxInvocationContext();
// expect(lc.acquireLock("k",config.getLockAcquisitionTimeout(),
// TimeUnit.MILLISECONDS)).andReturn(EasyMock.<Lock>anyObject());
Lock mockLock = createNiceMock(Lock.class);
expect(lc.acquireLock("k", config.getLockAcquisitionTimeout(), TimeUnit.MILLISECONDS))
.andReturn(mockLock);
expect(lc.acquireLock("k", config.getLockAcquisitionTimeout(), TimeUnit.MILLISECONDS))
.andReturn(null);
replay(lc);
assert lockManager.lockAndRecord("k", nonTx);
assert !lockManager.lockAndRecord("k", nonTx);
verify();
}
