1 /* 2 * Copyright (c) 2013, 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 * @key nmt jcmd 27 * @library /test/lib 28 * @modules java.base/jdk.internal.misc 29 * java.management 30 * @build sun.hotspot.WhiteBox 31 * @run main ClassFileInstaller sun.hotspot.WhiteBox 32 * sun.hotspot.WhiteBox$WhiteBoxPermission 33 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail ThreadedMallocTestType 34 */ 35 36 import jdk.test.lib.process.ProcessTools; 37 import jdk.test.lib.process.OutputAnalyzer; 38 import jdk.test.lib.JDKToolFinder; 39 import sun.hotspot.WhiteBox; 40 41 public class ThreadedMallocTestType { 42 public static long memAlloc1; 43 public static long memAlloc2; 44 public static long memAlloc3; 45 46 public static void main(String args[]) throws Exception { 47 OutputAnalyzer output; 48 final WhiteBox wb = WhiteBox.getWhiteBox(); 49 50 // Grab my own PID 51 String pid = Long.toString(ProcessTools.getProcessId()); 52 ProcessBuilder pb = new ProcessBuilder(); 53 54 Thread allocThread = new Thread() { 55 public void run() { 56 // Alloc memory using the WB api 57 memAlloc1 = wb.NMTMalloc(128 * 1024); 58 memAlloc2 = wb.NMTMalloc(256 * 1024); 59 memAlloc3 = wb.NMTMalloc(512 * 1024); 60 } 61 }; 62 63 allocThread.start(); 64 allocThread.join(); 65 66 // Run 'jcmd <pid> VM.native_memory summary' 67 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary"}); 68 output = new OutputAnalyzer(pb.start()); 69 output.shouldContain("Test (reserved=896KB, committed=896KB)"); 70 71 Thread freeThread = new Thread() { 72 public void run() { 73 // Free the memory allocated by NMTMalloc 74 wb.NMTFree(memAlloc1); 75 wb.NMTFree(memAlloc2); 76 wb.NMTFree(memAlloc3); 77 } 78 }; 79 80 freeThread.start(); 81 freeThread.join(); 82 83 output = new OutputAnalyzer(pb.start()); 84 output.shouldNotContain("Test (reserved="); 85 } 86 }