1 /*
   2  * Copyright (c) 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 package runtime.valhalla.valuetypes;
  24 
  25 import jdk.test.lib.Asserts;
  26 
  27 /*
  28  * @test
  29  * @summary Uninitialized value fields test
  30  * @library /test/lib
  31  * @compile -XDenableValueTypes Point.java JumboValue.java
  32  * @run main/othervm -Xint -XX:ValueFieldMaxFlatSize=64 -XX:+PrintValueLayout -XX:+EnableValhalla runtime.valhalla.valuetypes.UninitializedValueFieldsTest
  33  */
  34 
  35 
  36 /*
  37  * @run main/othervm -Xcomp -XX:+EnableValhalla -XX:ValueFieldMaxFlatSize=64 runtime.valhalla.valuetypes.UninitializedValueFieldsTest
  38  */
  39 public class UninitializedValueFieldsTest {
  40     
  41     static Point nonFlattenableStaticPoint;
  42     __Flattenable static Point staticPoint;
  43     
  44     __Flattenable Point instancePoint;
  45 
  46     static JumboValue sj1;
  47     static __Flattenable JumboValue sj2;
  48     
  49     JumboValue j1;
  50     __Flattenable JumboValue j2;
  51 
  52     static Object getNull() {
  53         return null;
  54     }
  55     
  56     UninitializedValueFieldsTest() { }
  57 
  58     public static void main(String[] args) {
  59         checkUninitializedPoint(UninitializedValueFieldsTest.staticPoint, 0, 0);
  60         Asserts.assertEquals(nonFlattenableStaticPoint, null, "invalid non flattenable static value field");
  61         UninitializedValueFieldsTest.staticPoint = Point.createPoint(456, 678);
  62         checkUninitializedPoint(UninitializedValueFieldsTest.staticPoint, 456, 678);
  63         UninitializedValueFieldsTest test = new UninitializedValueFieldsTest();
  64         checkUninitializedPoint(test.instancePoint, 0, 0);
  65         test.instancePoint = Point.createPoint(123, 345);
  66         checkUninitializedPoint(test.instancePoint, 123, 345);
  67 
  68         Asserts.assertEquals(test.j1, null, "invalid non flattenable instance value field");
  69         Asserts.assertEquals(test.j2.l0, 0L, "invalid flattenable instance value field");
  70     }
  71 
  72     static void checkUninitializedPoint(Point p, int x, int y) {
  73         Asserts.assertEquals(p.x, x, "invalid x value");
  74         Asserts.assertEquals(p.y, y, "invalid y value");
  75     }
  76 }