1 /* 2 * Copyright (c) 2014, 2015, 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 * @summary run NMT baseline, allocate memory and verify output from summary.diff 27 * @key nmt jcmd 28 * @library /testlibrary /test/lib 29 * @modules java.base/jdk.internal.misc 30 * java.management 31 * @build JcmdSummaryDiff 32 * @run main ClassFileInstaller sun.hotspot.WhiteBox 33 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=summary JcmdSummaryDiff 34 */ 35 36 import jdk.test.lib.*; 37 38 import sun.hotspot.WhiteBox; 39 40 public class JcmdSummaryDiff { 41 42 public static WhiteBox wb = WhiteBox.getWhiteBox(); 43 44 public static void main(String args[]) throws Exception { 45 ProcessBuilder pb = new ProcessBuilder(); 46 OutputAnalyzer output; 47 // Grab my own PID 48 String pid = Long.toString(ProcessTools.getProcessId()); 49 50 long commitSize = 128 * 1024; 51 long reserveSize = 256 * 1024; 52 long addr; 53 54 // Run 'jcmd <pid> VM.native_memory baseline=true' 55 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "baseline=true"}); 56 pb.start().waitFor(); 57 58 output = new OutputAnalyzer(pb.start()); 59 output.shouldContain("Baseline succeeded"); 60 61 addr = wb.NMTReserveMemory(reserveSize); 62 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary.diff", "scale=KB"}); 63 64 output = new OutputAnalyzer(pb.start()); 65 output.shouldContain("Test (reserved=256KB +256KB, committed=0KB)"); 66 67 wb.NMTCommitMemory(addr, commitSize); 68 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary.diff", "scale=KB"}); 69 70 output = new OutputAnalyzer(pb.start()); 71 output.shouldContain("Test (reserved=256KB +256KB, committed=128KB +128KB)"); 72 73 wb.NMTUncommitMemory(addr, commitSize); 74 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary.diff", "scale=KB"}); 75 76 output = new OutputAnalyzer(pb.start()); 77 output.shouldContain("Test (reserved=256KB +256KB, committed=0KB)"); 78 79 wb.NMTReleaseMemory(addr, reserveSize); 80 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary.diff", "scale=KB"}); 81 82 output = new OutputAnalyzer(pb.start()); 83 output.shouldNotContain("Test (reserved="); 84 } 85 }