test/hotspot/jtreg/runtime/cds/appcds/ClassSpecializerTestApp.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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).
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 * 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.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;

// When this class is executed, the following classes will be generated by
// java.lang.invoke.ClassSpecializer with the code source
// "_ClassSpecializer_generateConcreteSpeciesCode".
//
//   - java.lang.invoke.BoundMethodHandle$Species_LFDIIL
//   - java.lang.invoke.BoundMethodHandle$Species_LFDIILJ
//   - java.lang.invoke.BoundMethodHandle$Species_LFDIILJD
//   - ...
//
// The TestDumpClassListSource test case checks that these classes are not
// written into the classlist, as they cannot be handled by -Xshare:dump
public class ClassSpecializerTestApp {
    public static void main(String args[]) throws Throwable {

        MethodHandles.Lookup lookup = MethodHandles.lookup();
        MethodType mt = MethodType.methodType(void.class, float.class, double.class, int.class,
                                              boolean.class, Object.class, long.class, double.class);
        MethodHandle mh = lookup.findStatic(ClassSpecializerTestApp.class, "callme", mt);
        invoke(mh, 4.0f, 5.0, 6, true, null, 7L, 8.0);
    }

    private static Object invoke(MethodHandle mh, Object ... args) throws Throwable {
        try {
            for (Object o : args) {
                mh = MethodHandles.insertArguments(mh, 0, o);
            }
            return mh.invoke();
        } catch (Throwable t) {
            System.out.println("Failed to find, link and/or invoke " + mh.toString() + ": " + t.getMessage());
            throw t;
        }
    }

    private static void callme(float f, double d, int i, boolean b, Object o, long l, double d2) {}
}