jdk8-mips64-public/hotspot: test/compiler/6663621/IVTest.java@f90c822e73f8

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http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17

     1 /*

     2  * Copyright (c) 1997, 2008, 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  */

    25 /**

    26  * @test

    27  * @bug 6663621

    28  * @summary JVM crashes while trying to execute api/java_security/Signature/SignatureTests.html#initSign tests.

    29  */

    31 public class IVTest {

    32     static int paddedSize;

    34     static void padV15(byte[] padded) {

    35         int psSize = padded.length;

    36         int k = 0;

    37         while (psSize-- > 0) {

    38             padded[k++] = (byte)0xff;

    39         }

    40     }

    42     static void padV15_2(int paddedSize) {

    43         byte[] padded = new byte[paddedSize];

    44         int psSize = padded.length;

    45         int k = 0;

    46         while (psSize-- > 0) {

    47             padded[k++] = (byte)0xff;

    48         }

    49     }

    51     static void padV15_3() {

    52         byte[] padded = new byte[paddedSize];

    53         int psSize = padded.length;

    54         int k = 0;

    55         while (psSize-- > 0) {

    56             padded[k++] = (byte)0xff;

    57         }

    58     }

    60     static void padV15_4() {

    61         byte[] padded = new byte[paddedSize];

    62         int psSize = padded.length;

    63         for (int k = 0;psSize > 0; psSize--) {

    64             int i = padded.length - psSize;

    65             padded[i] = (byte)0xff;

    66         }

    67     }

    69     static void padV15_5() {

    70         byte[] padded = new byte[paddedSize];

    71         int psSize = padded.length;

    72         int k = psSize - 1;

    73         for (int i = 0; i < psSize; i++) {

    74             padded[k--] = (byte)0xff;

    75         }

    76     }

    78     public static void main(String argv[]) {

    79         int bounds = 1024;

    80         int lim = 500000;

    81         long start = System.currentTimeMillis();

    82         for (int j = 0; j < lim; j++) {

    83             paddedSize = j % bounds;

    84             padV15(new byte[paddedSize]);

    85         }

    86         long end = System.currentTimeMillis();

    87         System.out.println(end - start);

    88         start = System.currentTimeMillis();

    89         for (int j = 0; j < lim; j++) {

    90             paddedSize = j % bounds;

    91             padV15_2(paddedSize);

    92         }

    93         end = System.currentTimeMillis();

    94         System.out.println(end - start);

    95         start = System.currentTimeMillis();

    96         for (int j = 0; j < lim; j++) {

    97             paddedSize = j % bounds;

    98             padV15_3();

    99         }

   100         end = System.currentTimeMillis();

   101         System.out.println(end - start);

   102         start = System.currentTimeMillis();

   103         for (int j = 0; j < lim; j++) {

   104             paddedSize = j % bounds;

   105             padV15_4();

   106         }

   107         end = System.currentTimeMillis();

   108         System.out.println(end - start);

   109         start = System.currentTimeMillis();

   110         for (int j = 0; j < lim; j++) {

   111             paddedSize = j % bounds;

   112             padV15_5();

   113         }

   114         end = System.currentTimeMillis();

   115         System.out.println(end - start);

   116     }

   117 }

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