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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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import java.io.File;

import java.net.URL;

import java.net.URLClassLoader;

import sun.hotspot.WhiteBox;

//

// Test class mirror objects are cached when open archive heap objects are mapped:

//  - Well-known shared library classes:

//      java.lang.Object

//      java.lang.String

//  - Shared application class loaded by the system class loader

//  - Shared application class loaded user defined class loader

//

public class CheckCachedMirrorApp {

    static WhiteBox wb;

    public static void main(String args[]) throws Exception {

        String path = args[0];

        URL url = new File(path).toURI().toURL();

        URL[] urls = new URL[] {url};

        URLClassLoader loader = new URLClassLoader(urls);

        Class hello = loader.loadClass("Hello");

        System.out.println("Loaded " + hello + " from " + url + " using loader " + loader);

        wb = WhiteBox.getWhiteBox();

        if (!wb.areOpenArchiveHeapObjectsMapped()) {

            System.out.println("Archived open_archive_heap objects are not mapped.");

            System.out.println("This may happen during normal operation. Test Skipped.");

            return;

        }

        // Well-known shared library classes

        Class object_class = Object.class;

        checkMirror(object_class, true);

        Class string_class = String.class;

        checkMirror(string_class, true);

        // Shared app class

        Class app_class = CheckCachedMirrorApp.class;

        checkMirror(app_class, true);

        // Hello is shared class and loaded by the 'loader' defined in current app.

        // It should not have cached resolved_references.

        Class class_with_user_defined_loader = hello;

        checkMirror(class_with_user_defined_loader, false);

    }

    static void checkMirror(Class c, boolean mirrorShouldBeArchived) {

        System.out.print("Check cached mirror for " + c);

        if (wb.isSharedClass(c)) {

            // Check if the Class object is cached

            if (mirrorShouldBeArchived && wb.isShared(c)) {

                System.out.println(c + " mirror is cached. Expected.");

            } else if (!mirrorShouldBeArchived && !wb.isShared(c)) {

                System.out.println(c + " mirror is not cached. Expected.");

            } else if (mirrorShouldBeArchived && !wb.isShared(c)) {

                throw new RuntimeException(

                    "FAILED. " + c + " mirror is not cached.");

            } else {

                throw new RuntimeException(

                    "FAILED. " + c + " mirror should not be cached.");

            }

        } else {

          System.out.println("Class " + c + "is not shared, skipping the check for mirror");

        }

    }

}