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 image opening/closing

    26  * @test ImageOpenTest

    27  * @summary Unit test for JVM_ImageOpen() method

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

    29  * @build ImageOpenTest

    30  * @run main ClassFileInstaller sun.hotspot.WhiteBox

    31  *                              sun.hotspot.WhiteBox$WhiteBoxPermission

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

    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 ImageOpenTest {

    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 nonexistentImageFile = javaHome + "/lib/modules/nonexistent.jimage";

    47         String bootmodulesImageFile = javaHome + File.separator + "lib" + File.separator

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

    49 

    50         if (!(new File(bootmodulesImageFile)).exists()) {

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

    52             return;

    53         }

    54 

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

    56 

    57         // open nonexistent image

    58         long id = wb.imageOpenImage(nonexistentImageFile, bigEndian);

    59         assertTrue(id == 0L, "Failed. Get id " + id + "instead of 0 on opening nonexistent file\n");

    60         wb.imageCloseImage(id);

    61 

    62         // open bootmodules image

    63         id = wb.imageOpenImage(bootmodulesImageFile, bigEndian);

    64         assertFalse(id == 0, "Failed. Get id 0 on opening bootmodules.jimage");

    65         wb.imageCloseImage(id);

    66 

    67         // non-native endian

    68         id = wb.imageOpenImage(bootmodulesImageFile, !bigEndian);

    69         assertFalse(id == 0, "Failed. Get id 0 on opening bootmodules.jimage with non-native endian");

    70         wb.imageCloseImage(id);

    71 

    72         //

    73         // open several times

    74         //

    75         id = wb.imageOpenImage(bootmodulesImageFile, bigEndian);

    76         long id1 = wb.imageOpenImage(bootmodulesImageFile, bigEndian);

    77         long id2 = wb.imageOpenImage(bootmodulesImageFile, bigEndian);

    78         assertTrue((id == id1) && (id == id2), "Failed. Open thee times with ids " + id + " " + id1 + " " + id1);

    79 

    80         wb.imageCloseImage(id);

    81         wb.imageCloseImage(id1);

    82         wb.imageCloseImage(id2);

    83     }

    84 }