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 accessing the data address of a jimage. This only makes sense when the

    26  * entire jimage is mapped into memory.

    27  * @test ImageGetDataAddressTest

    28  * @summary Unit test for JVM_ImageGetDataAddress() method

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

    30  * @build ImageGetDataAddressTest

    31  * @run main ClassFileInstaller sun.hotspot.WhiteBox

    32  *                              sun.hotspot.WhiteBox$WhiteBoxPermission

    33  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:+MemoryMapImage ImageGetDataAddressTest +

    34  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:-MemoryMapImage ImageGetDataAddressTest -

    35  */

    36 

    37 import java.io.File;

    38 import java.nio.ByteOrder;

    39 import sun.hotspot.WhiteBox;

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

    41 

    42 public class ImageGetDataAddressTest {

    43 

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

    45 

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

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

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

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

    50 

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

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

    53             return;

    54         }

    55 

    56         boolean isMMap = args[0].equals("+");

    57 

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

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

    60 

    61         // get data for valid id

    62         long dataAddr = wb.imageGetDataAddress(id);

    63         assertFalse((dataAddr == 0) && isMMap, "Failed. Data address is " + dataAddr + " for valid id\n");

    64 

    65         // get data for invalid id == 0

    66         dataAddr = wb.imageGetDataAddress(0);

    67         assertTrue(dataAddr == 0, "Failed. Data address is " + dataAddr + " for zero id\n");

    68 

    69         wb.imageCloseImage(id);

    70     }

    71 }