Examples with ReentrantLock java.util.concurrent.locks.ReentrantLock used on opensource projects

Example 66 with ReentrantLock

use of java.util.concurrent.locks.ReentrantLock in project geode by apache.

the class ForceableLinkedBlockingQueue method signalNotEmpty.

/**
   * Signals a waiting take. Called only from put/offer (which do not otherwise ordinarily lock
   * takeLock.)
   */
private void signalNotEmpty() {
    final ReentrantLock takeLock = this.takeLock;
    takeLock.lock();
    try {
        notEmpty.signal();
    } finally {
        takeLock.unlock();
    }
}

Example 67 with ReentrantLock

use of java.util.concurrent.locks.ReentrantLock in project geode by apache.

the class ForceableLinkedBlockingQueue method signalNotFull.

/**
   * Signals a waiting put. Called only from take/poll.
   */
private void signalNotFull() {
    final ReentrantLock putLock = this.putLock;
    putLock.lock();
    try {
        notFull.signal();
    } finally {
        putLock.unlock();
    }
}

Example 68 with ReentrantLock

use of java.util.concurrent.locks.ReentrantLock in project geode by apache.

the class ForceableLinkedBlockingQueue method poll.

public E poll() {
    final AtomicInteger count = this.count;
    if (count.get() == 0)
        return null;
    E x = null;
    int c = -1;
    final ReentrantLock takeLock = this.takeLock;
    takeLock.lock();
    try {
        if (count.get() > 0) {
            x = dequeue();
            c = count.getAndDecrement();
            if (c > 1)
                notEmpty.signal();
        }
    } finally {
        takeLock.unlock();
    }
    if (c == capacity)
        signalNotFull();
    return x;
}

Example 69 with ReentrantLock

use of java.util.concurrent.locks.ReentrantLock in project geode by apache.

the class ForceableLinkedBlockingQueue method take.

public E take() throws InterruptedException {
    E x;
    int c = -1;
    final AtomicInteger count = this.count;
    final ReentrantLock takeLock = this.takeLock;
    takeLock.lockInterruptibly();
    try {
        while (count.get() == 0) {
            notEmpty.await();
        }
        x = dequeue();
        c = count.getAndDecrement();
        if (c > 1)
            notEmpty.signal();
    } finally {
        takeLock.unlock();
    }
    if (c == capacity)
        signalNotFull();
    return x;
}

Example 70 with ReentrantLock

use of java.util.concurrent.locks.ReentrantLock in project sling by apache.

the class JspRuntimeContext method getTagFileLoadingLock.

/**
     * Returns and optionally creates a lock to load a tag file.
     */
private Lock getTagFileLoadingLock(final String tagFilePath) {
    Lock lock = tagFileLoadingLocks.get(tagFilePath);
    if (lock == null) {
        lock = new ReentrantLock();
        final Lock existingLock = tagFileLoadingLocks.putIfAbsent(tagFilePath, lock);
        if (existingLock != null) {
            lock = existingLock;
        }
    }
    return lock;
}