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1   /*
2    * Copyright 2013 The Netty Project
3    *
4    * The Netty Project licenses this file to you under the Apache License,
5    * version 2.0 (the "License"); you may not use this file except in compliance
6    * with the License. You may obtain a copy of the License at:
7    *
8    *   http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13   * License for the specific language governing permissions and limitations
14   * under the License.
15   */
16  
17  package io.netty.util.concurrent;
18  
19  /**
20   * A {@link Future} which is used to indicate the progress of an operation.
21   */
22  public interface ProgressiveFuture<V> extends Future<V> {
23  
24      @Override
25      ProgressiveFuture<V> addListener(GenericFutureListener<? extends Future<? super V>> listener);
26  
27      @Override
28      ProgressiveFuture<V> addListeners(GenericFutureListener<? extends Future<? super V>>... listeners);
29  
30      @Override
31      ProgressiveFuture<V> removeListener(GenericFutureListener<? extends Future<? super V>> listener);
32  
33      @Override
34      ProgressiveFuture<V> removeListeners(GenericFutureListener<? extends Future<? super V>>... listeners);
35  
36      @Override
37      ProgressiveFuture<V> sync() throws InterruptedException;
38  
39      @Override
40      ProgressiveFuture<V> syncUninterruptibly();
41  
42      @Override
43      ProgressiveFuture<V> await() throws InterruptedException;
44  
45      @Override
46      ProgressiveFuture<V> awaitUninterruptibly();
47  }