1 /*

     2  * Copyright (c) 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 getting all attributes,

    26  * @test ImageGetAttributesTest

    27  * @summary Unit test for JVM_ImageGetAttributes() method

    28  * @library /testlibrary /../../test/lib

    29  * @build LocationConstants ImageGetAttributesTest

    30  * @run main ClassFileInstaller sun.hotspot.WhiteBox

    31  *                              sun.hotspot.WhiteBox$WhiteBoxPermission

    32  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI ImageGetAttributesTest

    33  */

    34 

    35 import java.io.File;

    36 import java.nio.ByteOrder;

    37 import sun.hotspot.WhiteBox;

    38 import static jdk.test.lib.Asserts.*;

    39 

    40 public class ImageGetAttributesTest implements LocationConstants {

    41 

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

    43 

    44     public static void main(String... args) throws Exception {

    45         String javaHome = System.getProperty("java.home");

    46         String imageFile = javaHome + File.separator + "lib" + File.separator

    47                 + "modules" + File.separator + "bootmodules.jimage";

    48 

    49         if (!(new File(imageFile)).exists()) {

    50             System.out.printf("Test skipped.");

    51             return;

    52         }

    53 

    54         testImageGetAttributes(imageFile);

    55     }

    56 

    57     private static void testImageGetAttributes(String imageFile) {

    58 

    59         boolean bigEndian = ByteOrder.nativeOrder() == ByteOrder.BIG_ENDIAN;

    60         long id = wb.imageOpenImage(imageFile, bigEndian);

    61         try {

    62             long stringsSize = wb.imageGetStringsSize(id);

    63             assertNE(stringsSize, 0, "strings size is 0");

    64 

    65             int[] array = wb.imageAttributeOffsets(id);

    66             assertNotNull(array, "Could not retrieve offsets of array");

    67 

    68             // Get non-null attributes

    69             boolean attFound = false;

    70             int[] idx = {-1, -1, -1};

    71             // first non-null attribute

    72             for (int i = 0; i < array.length; i++) {

    73                 if (array[i] != 0) {

    74                     attFound = true;

    75                     idx[0] = i;

    76                     break;

    77                 }

    78             }

    79 

    80             // middle non-null attribute

    81             for (int i = array.length / 2; i < array.length; i++) {

    82                 if (array[i] != 0) {

    83                     attFound = true;

    84                     idx[1] = i;

    85                     break;

    86                 }

    87             }

    88 

    89             // last non-null attribute

    90             for (int i = array.length - 1; i >= 0; i--) {

    91                 if (array[i] != 0) {

    92                     attFound = true;

    93                     idx[2] = i;

    94                     break;

    95                 }

    96             }

    97             assertTrue(attFound, "Failed. No non-null offset attributes");

    98                 // test cases above

    99                 for (int i = 0; i < 3; i++) {

   100                     if (idx[i] != -1) {

   101                         long[] attrs = wb.imageGetAttributes(id, (int) array[idx[i]]);

   102                         long module = attrs[LOCATION_ATTRIBUTE_MODULE];

   103                         long parent = attrs[LOCATION_ATTRIBUTE_PARENT];

   104                         long base = attrs[LOCATION_ATTRIBUTE_BASE];

   105                         long ext = attrs[LOCATION_ATTRIBUTE_EXTENSION];

   106 

   107                         if ((module >= 0) && (module < stringsSize)

   108                                 && (parent >= 0) && (parent < stringsSize)

   109                                 && (base != 0)

   110                                 && (ext >= 0) && (ext < stringsSize)) {

   111                         } else {

   112                             System.out.printf("Failed. Read attribute offset %d (position %d) but wrong offsets\n",

   113                                     array[idx[i]], idx[i]);

   114                             System.out.printf("    offsets: module = %d parent = %d base = %d extention = %d\n",

   115                                     module, parent, base, ext);

   116                             throw new RuntimeException("Read attribute offset error");

   117                         }

   118                     } else {

   119                         System.out.printf("Failed. Could not read attribute offset %d (position %d)\n",

   120                                 array[idx[i]], idx[i]);

   121                         throw new RuntimeException("Read attribute offset error");

   122                     }

   123                 }

   124         } finally {

   125             wb.imageCloseImage(id);

   126         }

   127     }

   128 }