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