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 package org.apache.logging.log4j.util;
18
19 import java.io.File;
20 import java.io.IOException;
21 import java.lang.management.ManagementFactory;
22
23 /**
24 * @Since 2.9
25 */
26 public class ProcessIdUtil {
27
28 public static final String DEFAULT_PROCESSID = "-";
29
30 public static String getProcessId() {
31 try {
32 return ManagementFactory.getRuntimeMXBean().getName().split("@")[0]; // likely works on most platforms
33 } catch (final Exception ex) {
34 try {
35 return new File("/proc/self").getCanonicalFile().getName(); // try a Linux-specific way
36 } catch (final IOException ignoredUseDefault) {
37 // Ignore exception.
38 }
39 }
40 return DEFAULT_PROCESSID;
41 }
42 }