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 import java.util.concurrent.ThreadFactory;
21
22 /**
23 * Internal thread helper.
24 */
25 final class ThreadUtil {
26
27 /**
28 * Creates a new Thread from the given factory and prefixes it's name with a prefix and sets the daemon flag.
29 *
30 * @param threadFactory the thread factory.
31 * @param runnable The runnable to thread.
32 * @param prefix the thread name prefix
33 * @param daemon marks this thread as a daemon thread
34 * @return constructed thread, or {@code null} if the request to create a thread is rejected
35 */
36 static Thread newThread(final ThreadFactory threadFactory, final Runnable runnable, final String prefix, final boolean daemon) {
37 final Thread thread = threadFactory.newThread(runnable);
38 if (thread == null) {
39 throw new IllegalStateException(String.format("The ThreadFactory %s cound not construct a thread for '%s'", threadFactory, prefix));
40 }
41 thread.setName(prefix + thread.getName());
42 thread.setDaemon(daemon);
43 return thread;
44 }
45
46 }