1 /* 2 * Copyright (c) 2013, 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @key nmt jcmd 27 * @summary Verify that jcmd correctly reports that NMT is not enabled 28 * @library /testlibrary 29 * First run without enabling NMT 30 * @run main/othervm JcmdWithNMTDisabled 31 * Then run with explicitly disabling NMT, should not be any difference 32 * @run main/othervm -XX:NativeMemoryTracking=off JcmdWithNMTDisabled 33 */ 34 35 import com.oracle.java.testlibrary.*; 36 37 public class JcmdWithNMTDisabled { 38 static ProcessBuilder pb = new ProcessBuilder(); 39 static String pid; 40 41 public static void main(String args[]) throws Exception { 42 // Grab my own PID 43 pid = Integer.toString(ProcessTools.getProcessId()); 44 45 jcmdCommand("summary"); 46 jcmdCommand("detail"); 47 jcmdCommand("baseline"); 48 jcmdCommand("summary.diff"); 49 jcmdCommand("detail.diff"); 50 jcmdCommand("scale=GB"); 51 jcmdCommand("shutdown"); 52 } 53 54 // Helper method for invoking different jcmd calls, all should fail with the same message saying NMT is not enabled 55 public static void jcmdCommand(String command) throws Exception { 56 57 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", command}); 58 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 59 60 // Verify that jcmd reports that NMT is not enabled 61 output.shouldContain("Native memory tracking is not enabled"); 62 } 63 }