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 * @run main JcmdWithNMTDisabled 1 30 */ 31 32 import com.oracle.java.testlibrary.*; 33 34 public class JcmdWithNMTDisabled { 35 static ProcessBuilder pb = new ProcessBuilder(); 36 static String pid; 37 38 public static void main(String args[]) throws Exception { 39 40 // This test explicitly needs to be run with the exact command lines below, not passing on 41 // arguments from the parent VM is a conscious choice to avoid NMT being turned on. 42 if (args.length > 0) { 43 ProcessBuilder pb; 44 OutputAnalyzer output; 45 String testjdkPath = System.getProperty("test.jdk"); 46 47 // First run without enabling NMT 48 pb = ProcessTools.createJavaProcessBuilder("-Dtest.jdk=" + testjdkPath, "JcmdWithNMTDisabled"); 49 output = new OutputAnalyzer(pb.start()); 50 output.shouldHaveExitValue(0); 51 52 // Then run with explicitly disabling NMT, should not be any difference 53 pb = ProcessTools.createJavaProcessBuilder("-Dtest.jdk=" + testjdkPath, "-XX:NativeMemoryTracking=off", "JcmdWithNMTDisabled"); 54 output = new OutputAnalyzer(pb.start()); 55 output.shouldHaveExitValue(0); 56 57 return; 58 } 59 60 // Grab my own PID 61 pid = Integer.toString(ProcessTools.getProcessId()); 62 63 jcmdCommand("summary"); 64 jcmdCommand("detail"); 65 jcmdCommand("baseline"); 66 jcmdCommand("summary.diff"); 67 jcmdCommand("detail.diff"); 68 jcmdCommand("scale=GB"); 69 jcmdCommand("shutdown"); 70 } 71 72 // Helper method for invoking different jcmd calls, all should fail with the same message saying NMT is not enabled 73 public static void jcmdCommand(String command) throws Exception { 74 75 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", command}); 76 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 77 78 // Verify that jcmd reports that NMT is not enabled 79 output.shouldContain("Native memory tracking is not enabled"); 80 } 81 }