Code example for Semaphore

Methods: releasetryAcquire

0
    public void run() { 
      observationReaderMainLoop(); 
    } 
  }; 
  private boolean persistent = false;
  private final Semaphore firstInitialization = new Semaphore(0);
 
  public ObservationSynchronizer(ObservationReceiver receiver, boolean persistent) {
    assert receiver != null;
    this.receiver = receiver;
    this.persistent = persistent;
    start(); 
    try { 
      if (firstInitialization.tryAcquire(5, TimeUnit.SECONDS))
        firstInitialization.release();
    } catch (InterruptedException e) {
      e.printStackTrace();
    } 
  } 
 
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