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  * @summary Test Reserve/Commit/Uncommit/Release of virtual memory and that we track it correctly
  27  * @key nmt jcmd
  28  * @library /testlibrary /../../test/lib
  29  * @modules java.base/sun.misc
  30  *          java.management
  31  * @build VirtualAllocTestType
  32  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  33  *                              sun.hotspot.WhiteBox$WhiteBoxPermission
  34  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail VirtualAllocTestType
  35  */
  36 
  37 import jdk.test.lib.*;
  38 import sun.hotspot.WhiteBox;
  39 
  40 public class VirtualAllocTestType {
  41 
  42   public static WhiteBox wb = WhiteBox.getWhiteBox();
  43   public static void main(String args[]) throws Exception {
  44     OutputAnalyzer output;
  45     long commitSize = 128 * 1024;
  46     long reserveSize = 256 * 1024;
  47     long addr;
  48 
  49     String pid = Integer.toString(ProcessTools.getProcessId());
  50     ProcessBuilder pb = new ProcessBuilder();
  51 
  52     addr = wb.NMTReserveMemory(reserveSize);
  53     pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "detail"});
  54 
  55     output = new OutputAnalyzer(pb.start());
  56     output.shouldContain("Test (reserved=256KB, committed=0KB)");
  57     output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*" + Long.toHexString(addr + reserveSize) + "\\] reserved 256KB for Test");
  58 
  59     wb.NMTCommitMemory(addr, commitSize);
  60 
  61 
  62     output = new OutputAnalyzer(pb.start());
  63     output.shouldContain("Test (reserved=256KB, committed=128KB)");
  64     output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*" + Long.toHexString(addr + commitSize) + "\\] committed 128KB");
  65 
  66     wb.NMTUncommitMemory(addr, commitSize);
  67 
  68 
  69     output = new OutputAnalyzer(pb.start());
  70     output.shouldContain("Test (reserved=256KB, committed=0KB)");
  71     output.shouldNotMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*" + Long.toHexString(addr + commitSize) + "\\] committed");
  72 
  73     wb.NMTReleaseMemory(addr, reserveSize);
  74 
  75     output = new OutputAnalyzer(pb.start());
  76     output.shouldNotContain("Test (reserved=");
  77     output.shouldNotMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*" + Long.toHexString(addr + reserveSize) + "\\] reserved");
  78   }
  79 }