1 /*
   2  * Copyright (c) 2018, 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
  26  * @bug 8209702
  27  * @summary Verify that the native clone intrinsic handles value types.
  28  * @modules java.base/jdk.experimental.bytecode
  29  *          java.base/jdk.experimental.value
  30  * @library /test/lib
  31  * @compile -XDemitQtypes -XDenableValueTypes TestNativeClone.java
  32  * @run main/othervm -XX:+EnableValhalla -Xbatch -XX:-UseTypeProfile
  33  *                   -XX:CompileCommand=compileonly,compiler.valhalla.valuetypes.MyValue::*
  34  *                   -XX:CompileCommand=compileonly,compiler.valhalla.valuetypes.TestNativeClone::test*
  35  *                   -XX:CompileCommand=compileonly,jdk.internal.reflect.GeneratedMethodAccessor1::invoke
  36  *                   -XX:CompileCommand=dontinline,jdk.internal.reflect.GeneratedMethodAccessor1::invoke
  37  *                   compiler.valhalla.valuetypes.TestNativeClone
  38  */
  39 
  40 package compiler.valhalla.valuetypes;
  41 
  42 import java.lang.invoke.*;
  43 import java.lang.reflect.InvocationTargetException;
  44 import java.lang.reflect.Method;
  45 import jdk.experimental.value.MethodHandleBuilder;
  46 import jdk.test.lib.Asserts;
  47 
  48 value class MyValue {
  49     public final int x;
  50 
  51     public MyValue(int x) {
  52         this.x = x;
  53     }
  54 }
  55 
  56 public class TestNativeClone {
  57 
  58     private static final MethodHandle cloneValue = MethodHandleBuilder.loadCode(MethodHandles.lookup(),
  59         "MyValue",
  60         MethodType.methodType(Object.class, MyValue.class.asValueType()),
  61         CODE -> {
  62             CODE.
  63             aload_0().
  64             invokevirtual(Object.class, "clone", "()Ljava/lang/Object;", false).
  65             areturn();
  66         });
  67 
  68     public static void test1(MyValue vt) throws Throwable {
  69         try {
  70             cloneValue.invoke(vt);
  71             throw new RuntimeException("No exception thrown");
  72         } catch (CloneNotSupportedException e) {
  73             // Expected
  74         }
  75     }
  76 
  77     public static void test2(Method clone, Object obj) {
  78         try {
  79             clone.invoke(obj);
  80         } catch (InvocationTargetException e) {
  81             // Expected
  82             Asserts.assertTrue(e.getCause() instanceof CloneNotSupportedException, "Unexpected exception thrown");
  83             return;
  84         } catch (Exception e) {
  85             throw new RuntimeException("Unexpected exception thrown", e);
  86         }
  87         throw new RuntimeException("No exception thrown");
  88     }
  89 
  90     public static void main(String[] args) throws Throwable {
  91         MyValue vt = new MyValue(42);
  92         Method clone = Object.class.getDeclaredMethod("clone");
  93         clone.setAccessible(true);
  94         for (int i = 0; i < 20_000; ++i) {
  95             test1(vt);
  96             test2(clone, vt);
  97         }
  98     }
  99 }