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