Helper Nonescalable

Jan Burse, created Jun 02. 2019
package matula.util.misc;
import java.util.concurrent.Semaphore;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReadWriteLock;
* <p>This class provides a unslotted and non-escalable read write pair.</p>
* <p>The class is implemented on top of the concurrent semaphore.</p>
* <p/>
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public final class Nonescalable extends Semaphore implements ReadWriteLock {
public static final int WRITE_PERMIT = 0x01000000;
final NonescalableRead read = new NonescalableRead(this);
final NonescalableWrite write = new NonescalableWrite(this);
* <p>Create a non-esalable read write lock.</p>
public Nonescalable() {
* <p>Retrieve the read lock.</p>
* @return The read lock.
public Lock readLock() {
return read;
* <p>Retrieve the write lock.</p>
* @return The write lock.
public Lock writeLock() {
return write;