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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
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 *
 * 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);
    }
}