1 /* 2 * Copyright (c) 2019, 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 * @summary Test accessing value type arrays that exceed the flattening threshold. 27 * @library /test/lib 28 * @run main/othervm -XX:+EnableValhalla -Xbatch TestFlatArrayThreshold 29 * @run main/othervm -XX:+EnableValhalla -XX:ValueArrayElemMaxFlatOops=1 -Xbatch TestFlatArrayThreshold 30 * @run main/othervm -XX:+EnableValhalla -XX:ValueArrayElemMaxFlatSize=1 -Xbatch TestFlatArrayThreshold 31 */ 32 33 import jdk.test.lib.Asserts; 34 35 final inline class MyValue1 { 36 final Object o1; 37 final Object o2; 38 39 public MyValue1() { 40 o1 = new Integer(42); 41 o2 = new Integer(43); 42 } 43 } 44 45 public class TestFlatArrayThreshold { 46 47 public static MyValue1 test1(MyValue1[] va, MyValue1 vt) { 48 va[0] = vt; 49 return va[1]; 50 } 51 52 public static MyValue1? test2(MyValue1?[] va, MyValue1? vt) { 53 va[0] = vt; 54 return va[1]; 55 } 56 57 public static Object test3(Object[] va, MyValue1 vt) { 58 va[0] = vt; 59 return va[1]; 60 } 61 62 public static Object test4(Object[] va, MyValue1? vt) { 63 va[0] = vt; 64 return va[1]; 65 } 66 67 public static MyValue1 test5(MyValue1[] va, Object vt) { 68 va[0] = (MyValue1)vt; 69 return va[1]; 70 } 71 72 public static MyValue1? test6(MyValue1?[] va, Object vt) { 73 va[0] = (MyValue1?)vt; 74 return va[1]; 75 } 76 77 public static Object test7(Object[] va, Object vt) { 78 va[0] = vt; 79 return va[1]; 80 } 81 82 static public void main(String[] args) { 83 MyValue1 vt = new MyValue1(); 84 MyValue1[] va = new MyValue1[2]; 85 MyValue1?[] vaB = new MyValue1?[2]; 86 va[1] = vt; 87 for (int i = 0; i < 10_000; ++i) { 88 MyValue1 result1 = test1(va, vt); 89 Asserts.assertEQ(result1.o1, 42); 90 Asserts.assertEQ(result1.o2, 43); 91 92 MyValue1? result2 = test2(va, vt); 93 Asserts.assertEQ(result2.o1, 42); 94 Asserts.assertEQ(result2.o2, 43); 95 result2 = test2(vaB, null); 96 Asserts.assertEQ(result2, null); 97 98 MyValue1? result3 = (MyValue1?)test3(va, vt); 99 Asserts.assertEQ(result3.o1, 42); 100 Asserts.assertEQ(result3.o2, 43); 101 result3 = (MyValue1?)test3(vaB, vt); 102 Asserts.assertEQ(result3, null); 103 104 MyValue1? result4 = (MyValue1?)test4(va, vt); 105 Asserts.assertEQ(result4.o1, 42); 106 Asserts.assertEQ(result4.o2, 43); 107 result4 = (MyValue1?)test4(vaB, null); 108 Asserts.assertEQ(result4, null); 109 110 MyValue1 result5 = test5(va, vt); 111 Asserts.assertEQ(result5.o1, 42); 112 Asserts.assertEQ(result5.o2, 43); 113 114 MyValue1? result6 = test6(va, vt); 115 Asserts.assertEQ(result6.o1, 42); 116 Asserts.assertEQ(result6.o2, 43); 117 result6 = test6(vaB, null); 118 Asserts.assertEQ(result6, null); 119 120 MyValue1? result7 = (MyValue1?)test7(va, vt); 121 Asserts.assertEQ(result7.o1, 42); 122 Asserts.assertEQ(result7.o2, 43); 123 result7 = (MyValue1?)test7(vaB, null); 124 Asserts.assertEQ(result7, null); 125 } 126 try { 127 test2(va, null); 128 throw new RuntimeException("NullPointerException expected"); 129 } catch (NullPointerException npe) { 130 // Expected 131 } 132 try { 133 test4(va, null); 134 throw new RuntimeException("NullPointerException expected"); 135 } catch (NullPointerException npe) { 136 // Expected 137 } 138 try { 139 test5(va, null); 140 throw new RuntimeException("NullPointerException expected"); 141 } catch (NullPointerException npe) { 142 // Expected 143 } 144 try { 145 test6(va, null); 146 throw new RuntimeException("NullPointerException expected"); 147 } catch (NullPointerException npe) { 148 // Expected 149 } 150 try { 151 test7(va, null); 152 throw new RuntimeException("NullPointerException expected"); 153 } catch (NullPointerException npe) { 154 // Expected 155 } 156 } 157 }