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 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

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 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

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 */

/*

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

 * entire jimage is mapped into memory.

 * @test ImageGetDataAddressTest

 * @summary Unit test for JVM_ImageGetDataAddress() method

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

 * @build ImageGetDataAddressTest

 * @run main ClassFileInstaller sun.hotspot.WhiteBox

 *                              sun.hotspot.WhiteBox$WhiteBoxPermission

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

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

 */

import java.io.File;

import java.nio.ByteOrder;

import sun.hotspot.WhiteBox;

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

public class ImageGetDataAddressTest {

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

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

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

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

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

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

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

            return;

        }

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

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

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

        // get data for valid id

        long dataAddr = wb.imageGetDataAddress(id);

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

        // get data for invalid id == 0

        dataAddr = wb.imageGetDataAddress(0);

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

        wb.imageCloseImage(id);

    }

}