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

Example 26 with ReentrantLock

use of java.util.concurrent.locks.ReentrantLock in project XobotOS by xamarin.

the class LinkedBlockingDeque method takeFirst.

public E takeFirst() throws InterruptedException {
    final ReentrantLock lock = this.lock;
    lock.lock();
    try {
        E x;
        while ((x = unlinkFirst()) == null) notEmpty.await();
        return x;
    } finally {
        lock.unlock();
    }
}

Example 27 with ReentrantLock

use of java.util.concurrent.locks.ReentrantLock in project XobotOS by xamarin.

the class LinkedBlockingDeque method toString.

public String toString() {
    final ReentrantLock lock = this.lock;
    lock.lock();
    try {
        Node<E> p = first;
        if (p == null)
            return "[]";
        StringBuilder sb = new StringBuilder();
        sb.append('[');
        for (; ; ) {
            E e = p.item;
            sb.append(e == this ? "(this Collection)" : e);
            p = p.next;
            if (p == null)
                return sb.append(']').toString();
            sb.append(',').append(' ');
        }
    } finally {
        lock.unlock();
    }
}

Example 28 with ReentrantLock

use of java.util.concurrent.locks.ReentrantLock in project XobotOS by xamarin.

the class LinkedBlockingDeque method pollFirst.

public E pollFirst() {
    final ReentrantLock lock = this.lock;
    lock.lock();
    try {
        return unlinkFirst();
    } finally {
        lock.unlock();
    }
}

Example 29 with ReentrantLock

use of java.util.concurrent.locks.ReentrantLock in project XobotOS by xamarin.

the class LinkedBlockingDeque method offerFirst.

/**
     * @throws NullPointerException {@inheritDoc}
     */
public boolean offerFirst(E e) {
    if (e == null)
        throw new NullPointerException();
    Node<E> node = new Node<E>(e);
    final ReentrantLock lock = this.lock;
    lock.lock();
    try {
        return linkFirst(node);
    } finally {
        lock.unlock();
    }
}

Example 30 with ReentrantLock

use of java.util.concurrent.locks.ReentrantLock in project XobotOS by xamarin.

the class LinkedBlockingDeque method drainTo.

/**
     * @throws UnsupportedOperationException {@inheritDoc}
     * @throws ClassCastException            {@inheritDoc}
     * @throws NullPointerException          {@inheritDoc}
     * @throws IllegalArgumentException      {@inheritDoc}
     */
public int drainTo(Collection<? super E> c, int maxElements) {
    if (c == null)
        throw new NullPointerException();
    if (c == this)
        throw new IllegalArgumentException();
    final ReentrantLock lock = this.lock;
    lock.lock();
    try {
        int n = Math.min(maxElements, count);
        for (int i = 0; i < n; i++) {
            // In this order, in case add() throws.
            c.add(first.item);
            unlinkFirst();
        }
        return n;
    } finally {
        lock.unlock();
    }
}