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 * @summary Test detail memory comparison against early baseline 27 * @key nmt jcmd 28 * @library /testlibrary /testlibrary/whitebox 29 * @build JcmdDiffCallsite 30 * @run main ClassFileInstaller sun.hotspot.WhiteBox 31 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail JcmdDiffCallsite 32 */ 33 34 import com.oracle.java.testlibrary.*; 35 import sun.hotspot.WhiteBox; 36 37 public class JcmdDiffCallsite { 38 39 public static void main(String args[]) throws Exception { 40 OutputAnalyzer output; 41 WhiteBox wb = WhiteBox.getWhiteBox(); 42 43 // Grab my own PID 44 String pid = Integer.toString(ProcessTools.getProcessId()); 45 ProcessBuilder pb = new ProcessBuilder(); 46 47 // Use WB API to alloc and free with the mtTest type 48 long memAlloc1 = wb.NMTMalloc(512 * 1024); 49 50 // Use WB API to ensure that all data has been merged before we continue 51 if (!wb.NMTWaitForDataMerge()) { 52 throw new Exception("Call to WB API NMTWaitForDataMerge() failed"); 53 } 54 55 // Run 'jcmd <pid> VM.native_memory baseline' 56 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "baseline"}); 57 pb.start(); 58 59 wb.NMTFree(memAlloc1); 60 // Use WB API to ensure that all data has been merged before we continue 61 if (!wb.NMTWaitForDataMerge()) { 62 throw new Exception("Call to WB API NMTWaitForDataMerge() failed"); 63 } 64 65 // Run 'jcmd <pid> VM.native_memory detail.diff' 66 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "detail.diff"}); 67 output = new OutputAnalyzer(pb.start()); 68 69 70 // Use WB API to ensure that all data has been merged before we continue 71 if (!wb.NMTWaitForDataMerge()) { 72 throw new Exception("Call to WB API NMTWaitForDataMerge() failed"); 73 } 74 75 // above malloc callsite should report 0 76 output = new OutputAnalyzer(pb.start()); 77 output.shouldContain("(malloc=0"); 78 } 79 }