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  * @key nmt jcmd

    27  * @library /testlibrary /testlibrary/whitebox

    28  * @build ThreadedVirtualAllocTestType

    29  * @run main ClassFileInstaller sun.hotspot.WhiteBox

    30  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail ThreadedVirtualAllocTestType

    31  */

    32 

    33 import com.oracle.java.testlibrary.*;

    34 import sun.hotspot.WhiteBox;

    35 

    36 public class ThreadedVirtualAllocTestType {

    37   public static long addr;

    38   public static final WhiteBox wb = WhiteBox.getWhiteBox();

    39   public static final long commitSize = 128 * 1024;

    40   public static final long reserveSize = 512 * 1024;

    41 

    42   public static void main(String args[]) throws Exception {

    43     OutputAnalyzer output;

    44 

    45     String pid = Integer.toString(ProcessTools.getProcessId());

    46     ProcessBuilder pb = new ProcessBuilder();

    47 

    48     Thread reserveThread = new Thread() {

    49       public void run() {

    50         addr = wb.NMTReserveMemory(reserveSize);

    51       }

    52     };

    53     reserveThread.start();

    54     reserveThread.join();

    55 

    56     mergeData();

    57 

    58     pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "detail"});

    59     output = new OutputAnalyzer(pb.start());

    60     output.shouldContain("Test (reserved=512KB, committed=0KB)");

    61     output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*" + Long.toHexString(addr + reserveSize) + "\\] reserved 512KB for Test");

    62 

    63     Thread commitThread = new Thread() {

    64       public void run() {

    65         wb.NMTCommitMemory(addr, commitSize);

    66       }

    67     };

    68     commitThread.start();

    69     commitThread.join();

    70 

    71     mergeData();

    72 

    73     output = new OutputAnalyzer(pb.start());

    74     output.shouldContain("Test (reserved=512KB, committed=128KB)");

    75     output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*" + Long.toHexString(addr + commitSize) + "\\] committed 128KB");

    76 

    77     Thread uncommitThread = new Thread() {

    78       public void run() {

    79         wb.NMTUncommitMemory(addr, commitSize);

    80       }

    81     };

    82     uncommitThread.start();

    83     uncommitThread.join();

    84 

    85     mergeData();

    86 

    87     output = new OutputAnalyzer(pb.start());

    88     output.shouldContain("Test (reserved=512KB, committed=0KB)");

    89     output.shouldNotMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*" + Long.toHexString(addr + commitSize) + "\\] committed");

    90 

    91     Thread releaseThread = new Thread() {

    92       public void run() {

    93         wb.NMTReleaseMemory(addr, reserveSize);

    94       }

    95     };

    96     releaseThread.start();

    97     releaseThread.join();

    98 

    99     mergeData();

   100 

   101     output = new OutputAnalyzer(pb.start());

   102     output.shouldNotContain("Test (reserved=");

   103     output.shouldNotContain("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*" + Long.toHexString(addr + reserveSize) + "\\] reserved");

   104   }

   105 

   106   public static void mergeData() throws Exception {

   107     // Use WB API to ensure that all data has been merged before we continue

   108     if (!wb.NMTWaitForDataMerge()) {

   109       throw new Exception("Call to WB API NMTWaitForDataMerge() failed");

   110     }

   111   }

   112 }