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 ThreadedVirtualAllocTestType
  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 ThreadedVirtualAllocTestType
  32  */
  33 
  34 import com.oracle.java.testlibrary.*;
  35 import sun.hotspot.WhiteBox;
  36 
  37 public class ThreadedVirtualAllocTestType {
  38   public static long addr;
  39   public static final WhiteBox wb = WhiteBox.getWhiteBox();
  40   public static final long commitSize = 128 * 1024;
  41   public static final long reserveSize = 512 * 1024;
  42 
  43   public static void main(String args[]) throws Exception {
  44     OutputAnalyzer output;
  45 
  46     String pid = Integer.toString(ProcessTools.getProcessId());
  47     ProcessBuilder pb = new ProcessBuilder();
  48 
  49     boolean has_nmt_detail = wb.NMTIsDetailSupported();
  50     if (has_nmt_detail) {
  51       System.out.println("NMT detail support detected.");
  52     } else {
  53       System.out.println("NMT detail support not detected.");
  54     }
  55 
  56     Thread reserveThread = new Thread() {
  57       public void run() {
  58         addr = wb.NMTReserveMemory(reserveSize);
  59       }
  60     };
  61     reserveThread.start();
  62     reserveThread.join();
  63 
  64     pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "detail"});
  65     output = new OutputAnalyzer(pb.start());
  66     output.shouldContain("Test (reserved=512KB, committed=0KB)");
  67     if (has_nmt_detail) {
  68       output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*" + Long.toHexString(addr + reserveSize) + "\\] reserved 512KB for Test");
  69     }
  70 
  71     Thread commitThread = new Thread() {
  72       public void run() {
  73         wb.NMTCommitMemory(addr, commitSize);
  74       }
  75     };
  76     commitThread.start();
  77     commitThread.join();
  78 
  79     output = new OutputAnalyzer(pb.start());
  80     output.shouldContain("Test (reserved=512KB, committed=128KB)");
  81     if (has_nmt_detail) {
  82       output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*" + Long.toHexString(addr + commitSize) + "\\] committed 128KB");
  83     }
  84 
  85     Thread uncommitThread = new Thread() {
  86       public void run() {
  87         wb.NMTUncommitMemory(addr, commitSize);
  88       }
  89     };
  90     uncommitThread.start();
  91     uncommitThread.join();
  92 
  93     output = new OutputAnalyzer(pb.start());
  94     output.shouldContain("Test (reserved=512KB, committed=0KB)");
  95     output.shouldNotMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*" + Long.toHexString(addr + commitSize) + "\\] committed");
  96 
  97     Thread releaseThread = new Thread() {
  98       public void run() {
  99         wb.NMTReleaseMemory(addr, reserveSize);
 100       }
 101     };
 102     releaseThread.start();
 103     releaseThread.join();
 104 
 105     output = new OutputAnalyzer(pb.start());
 106     output.shouldNotContain("Test (reserved=");
 107     output.shouldNotContain("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*" + Long.toHexString(addr + reserveSize) + "\\] reserved");
 108   }
 109 
 110     }