Example usage for java.util.concurrent.locks Condition awaitUninterruptibly

Introduction

In this page you can find the example usage for java.util.concurrent.locks Condition awaitUninterruptibly.

Prototype

void awaitUninterruptibly();

Source Link

Document

Causes the current thread to wait until it is signalled.

Usage

From source file:org.apache.hadoop.hdfs.client.ShortCircuitCache.java

ClientMmap getOrCreateClientMmap(ShortCircuitReplica replica, boolean anchored) {
    Condition newCond;/*  ww  w . jav a2 s.  c o  m*/
    lock.lock();
    try {
        while (replica.mmapData != null) {
            if (replica.mmapData instanceof MappedByteBuffer) {
                ref(replica);
                MappedByteBuffer mmap = (MappedByteBuffer) replica.mmapData;
                return new ClientMmap(replica, mmap, anchored);
            } else if (replica.mmapData instanceof Long) {
                long lastAttemptTimeMs = (Long) replica.mmapData;
                long delta = Time.monotonicNow() - lastAttemptTimeMs;
                if (delta < staleThresholdMs) {
                    if (LOG.isTraceEnabled()) {
                        LOG.trace(this + ": can't create client mmap for " + replica + " because we failed to "
                                + "create one just " + delta + "ms ago.");
                    }
                    return null;
                }
                if (LOG.isTraceEnabled()) {
                    LOG.trace(this + ": retrying client mmap for " + replica + ", " + delta
                            + " ms after the previous failure.");
                }
            } else if (replica.mmapData instanceof Condition) {
                Condition cond = (Condition) replica.mmapData;
                cond.awaitUninterruptibly();
            } else {
                Preconditions.checkState(false,
                        "invalid mmapData type " + replica.mmapData.getClass().getName());
            }
        }
        newCond = lock.newCondition();
        replica.mmapData = newCond;
    } finally {
        lock.unlock();
    }
    MappedByteBuffer map = replica.loadMmapInternal();
    lock.lock();
    try {
        if (map == null) {
            replica.mmapData = Long.valueOf(Time.monotonicNow());
            newCond.signalAll();
            return null;
        } else {
            outstandingMmapCount++;
            replica.mmapData = map;
            ref(replica);
            newCond.signalAll();
            return new ClientMmap(replica, map, anchored);
        }
    } finally {
        lock.unlock();
    }
}

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From source file:org.apache.hadoop.hdfs.shortcircuit.ShortCircuitCache.java

ClientMmap getOrCreateClientMmap(ShortCircuitReplica replica, boolean anchored) {
    Condition newCond;//from   w ww.j av  a2s  . c  o  m
    lock.lock();
    try {
        while (replica.mmapData != null) {
            if (replica.mmapData instanceof MappedByteBuffer) {
                ref(replica);
                MappedByteBuffer mmap = (MappedByteBuffer) replica.mmapData;
                return new ClientMmap(replica, mmap, anchored);
            } else if (replica.mmapData instanceof Long) {
                long lastAttemptTimeMs = (Long) replica.mmapData;
                long delta = Time.monotonicNow() - lastAttemptTimeMs;
                if (delta < mmapRetryTimeoutMs) {
                    if (LOG.isTraceEnabled()) {
                        LOG.trace(this + ": can't create client mmap for " + replica + " because we failed to "
                                + "create one just " + delta + "ms ago.");
                    }
                    return null;
                }
                if (LOG.isTraceEnabled()) {
                    LOG.trace(this + ": retrying client mmap for " + replica + ", " + delta
                            + " ms after the previous failure.");
                }
            } else if (replica.mmapData instanceof Condition) {
                Condition cond = (Condition) replica.mmapData;
                cond.awaitUninterruptibly();
            } else {
                Preconditions.checkState(false, "invalid mmapData type %s",
                        replica.mmapData.getClass().getName());
            }
        }
        newCond = lock.newCondition();
        replica.mmapData = newCond;
    } finally {
        lock.unlock();
    }
    MappedByteBuffer map = replica.loadMmapInternal();
    lock.lock();
    try {
        if (map == null) {
            replica.mmapData = Long.valueOf(Time.monotonicNow());
            newCond.signalAll();
            return null;
        } else {
            outstandingMmapCount++;
            replica.mmapData = map;
            ref(replica);
            newCond.signalAll();
            return new ClientMmap(replica, map, anchored);
        }
    } finally {
        lock.unlock();
    }
}

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From source file:org.unitime.timetable.onlinesectioning.MultiLock.java

public UnlockAll lockAll() {
    iLock.lock();//from  w  w w. j  a  v  a2 s .  c o m
    try {
        iLog.debug("Locking all ...");
        while (iAllLocked != null)
            iAllLocked.awaitUninterruptibly();
        iAllLocked = iLock.newCondition();
        while (!iIndividualLocks.isEmpty()) {
            Condition otherCondition = iIndividualLocks.values().iterator().next();
            otherCondition.awaitUninterruptibly();
        }
        iLog.debug("Locked: all");
        return new UnlockAll();
    } finally {
        iLock.unlock();
    }
}

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From source file:org.unitime.timetable.onlinesectioning.MultiLock.java

public Unlock lock(Collection<Long> ids) {
    iLock.lock();/*from w w  w. j  a  v  a  2  s  .  co m*/
    try {
        if (ids == null || ids.isEmpty())
            return new Unlock(ids);
        iLog.debug("Locking " + ids + " ...");
        Condition otherCondition = null;
        while ((otherCondition = hasLock(ids)) != null)
            otherCondition.awaitUninterruptibly();
        Condition myCondition = iLock.newCondition();
        for (Long id : ids)
            iIndividualLocks.put(id, myCondition);
        iLog.debug("Locked: " + ids);
        return new Unlock(ids);
    } finally {
        iLock.unlock();
    }
}

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