ReadWriteLock Arayüzü - Read ve Write Farkı Gözetir ve Reentrant'tır

Giriş

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import java.util.concurrent.locks.ReadWriteLock;

Açıklaması şöyle. Bu arayüzü gerçekleştiren tek sınıf ReentrantReadWriteLock.

A ReadWriteLock maintains a pair of associated locks, one for read-only operations and one for writing. The read lock may be held simultaneously by multiple reader threads, so long as there are no writers. The write lock is exclusive.

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Örnek

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public class Foo {
  ReadWriteLock lock = new ReentrantReadWriteLock();
  Lock readLock = lock.readLock();
  Lock writeLock = lock.writeLock();

  public void write (...) {
    writeLock.lock();
    try {
      ...
    } finally {
      writeLock.unlock();
    }
  }

  public void read (...) {
    readLock.lock();
    try {
      ...
    } finally {
      readLock.unlock();
    }
  }
}