jdk8-mips64-public/hotspot: test/serviceability/sa/LingeredAppWithRecComputation.java@e8a0af9fc1cb

8196969: JTreg Failure: serviceability/sa/ClhsdbJstack.java causes NPE
Summary: Account for serialized null scopes in NMethod
Reviewed-by: aph, never, andrew

     1 /*

     2  * Copyright (c) 2019, Red Hat Inc. 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  */

    24 import jdk.test.lib.apps.LingeredApp;

    26 public class LingeredAppWithRecComputation extends LingeredApp {

    28     public static final String THREAD_NAME = "LingeredAppWithRecComputation.factorial()";

    30     private long factorial(int n) {

    31         if (n <= 1) {

    32                 return 1;

    33         }

    34         if (n == 2) {

    35                 return 2;

    36         }

    37         return n * factorial(n - 1);

    38     }

    40     public void testLoop() {

    41         long result = 0;

    42         long[] lastNResults = new long[20];

    43         int i = 0;

    44         int j = 0;

    45         while (true) {

    46             result = factorial(i);

    47             lastNResults[j] = result;

    48             if (i % 12 == 0) {

    49                     i = -1; // reset i

    50             }

    51             if (j % 19 == 0) {

    52                     j = -1; // reset j

    53             }

    54             i++; j++;

    55         }

    56     }

    58     public static void main(String args[]) {

    59         LingeredAppWithRecComputation app = new LingeredAppWithRecComputation();

    60         Thread factorial = new Thread(() -> {

    61             app.testLoop();

    62         });

    63         factorial.setName(THREAD_NAME);

    64         factorial.start();

    65         LingeredApp.main(args);

    66     }

    67  }

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

test/serviceability/sa/LingeredAppWithRecComputation.java@e8a0af9fc1cb

test/serviceability/sa/LingeredAppWithRecComputation.java