/*
 * Copyright (c) 2018 - present Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */

import android.support.annotation.UiThread;

class UIDeadlock {
  Object lockA, lockB;

  @UiThread
  public synchronized void onUIThreadAOk() {
    synchronized(lockA) {}
  }

  @UiThread
  public void onUIThreadBOk() {
    synchronized(lockA) {
      synchronized(this) {}
    }
  }

  @UiThread
  public synchronized void onUIThreadBad() {
    synchronized(lockB) {}
  }

  public void notOnUIThreadBad() {
    synchronized(lockB) {
      synchronized(this) {}
    }
  }
}