1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.commons.exec;
19
20 /**
21 * Destroys all registered {@link Process} after a certain event, typically when the VM exits.
22 *
23 * @see ShutdownHookProcessDestroyer
24 */
25 public interface ProcessDestroyer {
26
27 /**
28 * Returns {@code true} if the specified {@link Process} was successfully added to the list of processes to be destroy.
29 *
30 * @param process the process to add.
31 * @return {@code true} if the specified {@link Process} was successfully added.
32 */
33 boolean add(Process process);
34
35 /**
36 * Returns {@code true} if the specified {@link Process} was successfully removed from the list of processes to be destroy.
37 *
38 * @param process the process to remove.
39 * @return {@code true} if the specified {@link Process} was successfully removed.
40 */
41 boolean remove(Process process);
42
43 /**
44 * Returns the number of registered processes.
45 *
46 * @return the number of register process.
47 */
48 int size();
49 }