1 /*
   2  * Copyright (c) 2016, 2017, 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  * A value-capable class (VCC) from which HotSpot derives a value
  26  * type. The derived value type (DVT) is referred to as
  27  * ValueCapableClass2$Value.
  28  */
  29 package compiler.valhalla.valuetypes;
  30 
  31 import java.lang.invoke.MethodHandle;
  32 import java.lang.invoke.MethodHandles;
  33 
  34 import jdk.incubator.mvt.ValueType;
  35 
  36 @jdk.incubator.mvt.ValueCapableClass
  37 public final class ValueCapableClass2 {
  38     public final long u;
  39 
  40     public static final MethodHandle FACTORY;
  41     static {
  42         MethodHandles.Lookup lookup = MethodHandles.lookup();
  43         ValueType<?> VT = ValueType.forClass(ValueCapableClass2.class);
  44         try {
  45             FACTORY = VT.unreflectWithers(lookup, true, VT.valueFields());
  46         } catch (NoSuchFieldException|IllegalAccessException e) {
  47             throw new RuntimeException("method handle lookup fails");
  48         }
  49     }
  50 
  51     private ValueCapableClass2(long u) {
  52         this.u = u;
  53     }
  54 
  55     public static ValueCapableClass2 create(long u) {
  56         return new ValueCapableClass2(u);
  57     }
  58 }