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.reflect.Method; 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 // LOG4J2-2126 use reflection to improve compatibility with Android Platform which does not support JMX extensions 33 final Class<?> managementFactoryClass = Class.forName("java.lang.management.ManagementFactory"); 34 final Method getRuntimeMXBean = managementFactoryClass.getDeclaredMethod("getRuntimeMXBean"); 35 final Class<?> runtimeMXBeanClass = Class.forName("java.lang.management.RuntimeMXBean"); 36 final Method getName = runtimeMXBeanClass.getDeclaredMethod("getName"); 37 38 final Object runtimeMXBean = getRuntimeMXBean.invoke(null); 39 final String name = (String) getName.invoke(runtimeMXBean); 40 //String name = ManagementFactory.getRuntimeMXBean().getName(); //JMX not allowed on Android 41 return name.split("@")[0]; // likely works on most platforms 42 } catch (final Exception ex) { 43 try { 44 return new File("/proc/self").getCanonicalFile().getName(); // try a Linux-specific way 45 } catch (final IOException ignoredUseDefault) { 46 // Ignore exception. 47 } 48 } 49 return DEFAULT_PROCESSID; 50 } 51 }