Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

  * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

  * or visit www.oracle.com if you need additional information or have any

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  */

 /*

  * @test

  * @summary Test reserve/commit/uncommit/release of virtual memory and that we track it correctly

  * @key nmt jcmd

  * @library /testlibrary /testlibrary/whitebox

  * @build VirtualAllocCommitUncommitRecommit

  * @run main ClassFileInstaller sun.hotspot.WhiteBox

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

  *

  */

 import com.oracle.java.testlibrary.*;

 import sun.hotspot.WhiteBox;

 public class VirtualAllocCommitUncommitRecommit {

     public static WhiteBox wb = WhiteBox.getWhiteBox();

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

         OutputAnalyzer output;

         long commitSize = 4 * 1024; // 4KB

         long reserveSize = 1024 * 1024; // 1024KB

         long addr;

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

         ProcessBuilder pb = new ProcessBuilder();

         boolean has_nmt_detail = wb.NMTIsDetailSupported();

         if (has_nmt_detail) {

             System.out.println("NMT detail support detected.");

         } else {

             System.out.println("NMT detail support not detected.");

         }

         // reserve

         addr = wb.NMTReserveMemory(reserveSize);

         pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid,

                 "VM.native_memory", "detail" });

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

         output.shouldContain("Test (reserved=1024KB, committed=0KB)");

         if (has_nmt_detail) {

             output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"

                     + Long.toHexString(addr + reserveSize)

                     + "\\] reserved 1024KB for Test");

         }

         long addrA = addr;

         long addrB = addr + commitSize;

         long addrC = addr + (2 * commitSize);

         long addrD = addr + (3 * commitSize);

         long addrE = addr + (4 * commitSize);

         long addrF = addr + (5 * commitSize);

         // commit ABCD

         wb.NMTCommitMemory(addrA, commitSize);

         wb.NMTCommitMemory(addrB, commitSize);

         wb.NMTCommitMemory(addrC, commitSize);

         wb.NMTCommitMemory(addrD, commitSize);

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

         output.shouldContain("Test (reserved=1024KB, committed=16KB)");

         if (has_nmt_detail) {

             output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"

                     + Long.toHexString(addr + reserveSize)

                     + "\\] reserved 1024KB for Test");

         }

         // uncommit BC

         wb.NMTUncommitMemory(addrB, commitSize);

         wb.NMTUncommitMemory(addrC, commitSize);

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

         output.shouldContain("Test (reserved=1024KB, committed=8KB)");

         if (has_nmt_detail) {

             output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"

                     + Long.toHexString(addr + reserveSize)

                     + "\\] reserved 1024KB for Test");

         }

         // commit EF

         wb.NMTCommitMemory(addrE, commitSize);

         wb.NMTCommitMemory(addrF, commitSize);

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

         output.shouldContain("Test (reserved=1024KB, committed=16KB)");

         if (has_nmt_detail) {

             output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"

                     + Long.toHexString(addr + reserveSize)

                     + "\\] reserved 1024KB for Test");

         }

         // uncommit A

         wb.NMTUncommitMemory(addrA, commitSize);

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

         output.shouldContain("Test (reserved=1024KB, committed=12KB)");

         if (has_nmt_detail) {

             output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"

                     + Long.toHexString(addr + reserveSize)

                     + "\\] reserved 1024KB for Test");

         }

         // commit ABC

         wb.NMTCommitMemory(addrA, commitSize);

         wb.NMTCommitMemory(addrB, commitSize);

         wb.NMTCommitMemory(addrC, commitSize);

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

         output.shouldContain("Test (reserved=1024KB, committed=24KB)");

         if (has_nmt_detail) {

             output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"

                     + Long.toHexString(addr + reserveSize)

                     + "\\] reserved 1024KB for Test");

         }

         // uncommit ABCDEF

         wb.NMTUncommitMemory(addrA, commitSize);

         wb.NMTUncommitMemory(addrB, commitSize);

         wb.NMTUncommitMemory(addrC, commitSize);

         wb.NMTUncommitMemory(addrD, commitSize);

         wb.NMTUncommitMemory(addrE, commitSize);

         wb.NMTUncommitMemory(addrF, commitSize);

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

         output.shouldContain("Test (reserved=1024KB, committed=0KB)");

         if (has_nmt_detail) {

             output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"

                     + Long.toHexString(addr + reserveSize)

                     + "\\] reserved 1024KB for Test");

         }

         // release

         wb.NMTReleaseMemory(addr, reserveSize);

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

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

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

                 + Long.toHexString(addr + reserveSize) + "\\] reserved 1024KB for Test");

     }

 }