1 /* 2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package jdk.jfr.jvm; 27 28 import static jdk.test.lib.Asserts.assertEquals; 29 import java.lang.management.ManagementFactory; 30 31 import jdk.jfr.internal.JVM; 32 33 /** 34 * @test TestPid 35 * @key jfr 36 * 37 * @library /lib / 38 * 39 * @run main/othervm jdk.jfr.jvm.TestPid 40 */ 41 public class TestPid { 42 43 private static long getProcessId() { 44 45 // something like '<pid>@<hostname>', at least in SUN / Oracle JVMs 46 final String jvmName = ManagementFactory.getRuntimeMXBean().getName(); 47 48 final int index = jvmName.indexOf('@'); 49 50 if (index < 1) { 51 // part before '@' empty (index = 0) / '@' not found (index = -1) 52 return 42; 53 } 54 55 try { 56 return Long.parseLong(jvmName.substring(0, index)); 57 } catch (NumberFormatException e) { 58 // ignore 59 } 60 return 42; 61 } 62 63 public static void main(String... args) throws InterruptedException { 64 65 JVM jvm = JVM.getJVM(); 66 String pid = jvm.getPid(); 67 68 try { 69 String managementPid = String.valueOf(getProcessId()); 70 assertEquals(pid, managementPid, "Pid doesn't match value returned by RuntimeMXBean"); 71 } catch (NumberFormatException nfe) { 72 throw new AssertionError("Pid must be numeric, but was '" + pid + "'"); 73 } 74 } 75 76 }