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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  public interface GenericProgressiveFutureListener<F extends ProgressiveFuture<?>> extends GenericFutureListener<F> {
20      /**
21       * Invoked when the operation has progressed.
22       *
23       * @param progress the progress of the operation so far (cumulative)
24       * @param total the number that signifies the end of the operation when {@code progress} reaches at it.
25       *              {@code -1} if the end of operation is unknown.
26       */
27      void operationProgressed(F future, long progress, long total) throws Exception;
28  }