Method enterWhen

output/java_guava/1.4.17/Monitor.java:453–471

Enters this monitor when the guard is satisfied. Blocks indefinitely, but may be interrupted. @throws InterruptedException if interrupted while waiting

(Guard guard)

  public void enterWhen(Guard guard) throws InterruptedException {
    if (guard.monitor != this) {
      throw new IllegalMonitorStateException();
    }
    final ReentrantLock lock = this.lock;
    boolean signalBeforeWaiting = lock.isHeldByCurrentThread();
    lock.lockInterruptibly();
    boolean satisfied = false;
    try {
      if (!guard.isSatisfied()) {
        await(guard, signalBeforeWaiting);
      }
      satisfied = true;
    } finally {
      if (!satisfied) {
        leave();
      }
    }
  }

  /**
   * Enters this monitor when the guard is satisfied. Blocks indefinitely.