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 * @key nmt jcmd 27 * @library /testlibrary /testlibrary/whitebox 28 * @build ThreadedMallocTestType 29 * @run main/othervm/bootclasspath -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail ThreadedMallocTestType 30 */ 31 32 import com.oracle.java.testlibrary.*; 33 import sun.hotspot.WhiteBox; 34 35 public class ThreadedMallocTestType { 36 public static long memAlloc1; 37 public static long memAlloc2; 38 public static long memAlloc3; 39 40 public static void main(String args[]) throws Exception { 41 OutputAnalyzer output; 42 final WhiteBox wb = WhiteBox.getWhiteBox(); 43 44 // Grab my own PID 45 String pid = Integer.toString(ProcessTools.getProcessId()); 46 ProcessBuilder pb = new ProcessBuilder(); 47 48 Thread allocThread = new Thread() { 49 public void run() { 50 // Alloc memory using the WB api 51 memAlloc1 = wb.NMTMalloc(128 * 1024); 52 memAlloc2 = wb.NMTMalloc(256 * 1024); 53 memAlloc3 = wb.NMTMalloc(512 * 1024); 54 } 55 }; 56 57 allocThread.start(); 58 allocThread.join(); 59 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 summary' 66 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary"}); 67 output = new OutputAnalyzer(pb.start()); 68 output.shouldContain("Test (reserved=896KB, committed=896KB)"); 69 70 Thread freeThread = new Thread() { 71 public void run() { 72 // Free the memory allocated by NMTMalloc 73 wb.NMTFree(memAlloc1); 74 wb.NMTFree(memAlloc2); 75 wb.NMTFree(memAlloc3); 76 } 77 }; 78 79 freeThread.start(); 80 freeThread.join(); 81 82 // Use WB API to ensure that all data has been merged before we continue 83 if (!wb.NMTWaitForDataMerge()) { 84 throw new Exception("Call to WB API NMTWaitForDataMerge() failed"); 85 } 86 87 output = new OutputAnalyzer(pb.start()); 88 output.shouldNotContain("Test (reserved="); 89 } 90 }