Examples with LockList com.arjuna.ats.internal.txoj.LockList used on opensource projects

Example 1 with LockList

use of com.arjuna.ats.internal.txoj.LockList in project narayana by jbosstm.

the class LockManager method propagate.

/**
 * Change lock ownership as nested action commits. All locks owned by the
 * committing action have their owners changed to be the parent of the
 * committing action. BasicAction ensures this is only called at nested
 * commit. This function works by copying the old LockList pointer and then
 * creating a new held lock list. Locks are then moved from the old to the
 * new, propagating en route.
 */
public boolean propagate(Uid from, Uid to) {
    if (txojLogger.logger.isTraceEnabled()) {
        txojLogger.logger.trace("LockManager::propagate(" + from + ", " + to + ")");
    }
    boolean result = false;
    int retryCount = 10;
    if (lockMutex()) {
        do {
            try {
                synchronized (locksHeldLockObject) {
                    if (loadState()) {
                        LockList oldlist = locksHeld;
                        Lock current = null;
                        locksHeld = new LockList();
                        if (locksHeld != null) {
                            while ((current = oldlist.pop()) != null) {
                                if (current.getCurrentOwner().equals(from)) {
                                    current.propagate();
                                }
                                if (!locksHeld.insert(current)) {
                                    current = null;
                                }
                            }
                            oldlist = null;
                            /* get rid of old lock list */
                            result = true;
                        } else {
                            /*
                                 * Cannot create new locklist - abort and try again.
                                 */
                            freeState();
                            throw new NullPointerException();
                        }
                    }
                    if (result) {
                        result = unloadState();
                    }
                }
            } catch (NullPointerException e) {
                result = false;
            }
            if (!result) {
                if (tsLogger.logger.isTraceEnabled()) {
                    tsLogger.logger.trace("LockManager.propagate() Dozing");
                }
                conflictManager.wait(1, LockManager.DOZE_TIME);
            }
        } while ((!result) && (--retryCount > 0));
        if (!result) {
            txojLogger.i18NLogger.warn_LockManager_1();
            synchronized (locksHeldLockObject) {
                freeState();
            }
        }
        unlockMutex();
    }
    return result;
}

Example 2 with LockList

use of com.arjuna.ats.internal.txoj.LockList in project narayana by jbosstm.

the class LockListIteratorUnitTest method test.

@Test
public void test() throws Exception {
    LockList list = new LockList();
    LockListIterator iter = new LockListIterator(list);
    assertEquals(iter.iterate(), null);
    iter.reset();
}