code: /*
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
   * compliance with the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License is
   * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
   * the License for the specific language governing permissions and limitations under the License.
   */
  
  package io.reactivex.rxjava3.internal.disposables;
  
  import java.util.concurrent.atomic.AtomicReference;
  
  import io.reactivex.rxjava3.disposables.Disposable;
  import io.reactivex.rxjava3.exceptions.Exceptions;
  import io.reactivex.rxjava3.functions.Cancellable;
  import io.reactivex.rxjava3.plugins.RxJavaPlugins;
  
  /**
   * A disposable container that wraps a Cancellable instance.
   * <p>
   * Watch out for the AtomicReference API leak!
   */
  public final class CancellableDisposable extends AtomicReference<Cancellable>
  implements Disposable {
  
      private static final long serialVersionUID = 5718521705281392066L;
  
      public CancellableDisposable(Cancellable cancellable) {
          super(cancellable);
      }
  
      @Override
      public boolean isDisposed() {
          return get() == null;
      }
  
      @Override
      public void dispose() {
          if (get() != null) {
              Cancellable c = getAndSet(null);
              if (c != null) {
                  try {
                      c.cancel();
                  } catch (Throwable ex) {
                      Exceptions.throwIfFatal(ex);
                      RxJavaPlugins.onError(ex);
                  }
              }
          }
      }
  }
  