1 /* 2 * Copyright (c) 2020, Red Hat, Inc. 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 for Runtime.fieldSizeOf with 32-bit compressed oops 27 * @library /test/lib 28 * 29 * @build sun.hotspot.WhiteBox 30 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 31 * 32 * @run main/othervm -Xmx128m 33 * -XX:+UnlockDiagnosticVMOptions -XX:+AbortVMOnCompilationFailure -Xcheck:jni -XX:+WhiteBoxAPI -Xbootclasspath/a:. 34 * -Xint 35 * FieldSizeOf 36 * 37 * @run main/othervm -Xmx128m 38 * -XX:+UnlockDiagnosticVMOptions -XX:+AbortVMOnCompilationFailure -Xcheck:jni -XX:+WhiteBoxAPI -Xbootclasspath/a:. 39 * -XX:TieredStopAtLevel=1 40 * FieldSizeOf 41 * 42 * @run main/othervm -Xmx128m 43 * -XX:+UnlockDiagnosticVMOptions -XX:+AbortVMOnCompilationFailure -Xcheck:jni -XX:+WhiteBoxAPI -Xbootclasspath/a:. 44 * -XX:-TieredCompilation 45 * FieldSizeOf 46 */ 47 48 /* 49 * @test 50 * @summary Test for Runtime.fieldSizeOf with zero-based compressed oops 51 * @library /test/lib 52 * @requires vm.bits == 64 53 * 54 * @build sun.hotspot.WhiteBox 55 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 56 * 57 * @run main/othervm -Xmx4g 58 * -XX:+UnlockDiagnosticVMOptions -XX:+AbortVMOnCompilationFailure -Xcheck:jni -XX:+WhiteBoxAPI -Xbootclasspath/a:. 59 * -Xint 60 * FieldSizeOf 61 * 62 * @run main/othervm -Xmx4g 63 * -XX:+UnlockDiagnosticVMOptions -XX:+AbortVMOnCompilationFailure -Xcheck:jni -XX:+WhiteBoxAPI -Xbootclasspath/a:. 64 * -XX:TieredStopAtLevel=1 65 * FieldSizeOf 66 * 67 * @run main/othervm -Xmx4g 68 * -XX:+UnlockDiagnosticVMOptions -XX:+AbortVMOnCompilationFailure -Xcheck:jni -XX:+WhiteBoxAPI -Xbootclasspath/a:. 69 * -XX:-TieredCompilation 70 * FieldSizeOf 71 */ 72 73 /* 74 * @test 75 * @summary Test for Runtime.fieldSizeOf without compressed oops 76 * @library /test/lib 77 * @requires vm.bits == 64 78 * 79 * @build sun.hotspot.WhiteBox 80 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 81 * 82 * @run main/othervm -Xmx128m -XX:-UseCompressedOops 83 * -XX:+UnlockDiagnosticVMOptions -XX:+AbortVMOnCompilationFailure -Xcheck:jni -XX:+WhiteBoxAPI -Xbootclasspath/a:. 84 * -Xint 85 * FieldSizeOf 86 * 87 * @run main/othervm -Xmx128m -XX:-UseCompressedOops 88 * -XX:+UnlockDiagnosticVMOptions -XX:+AbortVMOnCompilationFailure -Xcheck:jni -XX:+WhiteBoxAPI -Xbootclasspath/a:. 89 * -XX:TieredStopAtLevel=1 90 * FieldSizeOf 91 * 92 * @run main/othervm -Xmx128m -XX:-UseCompressedOops 93 * -XX:+UnlockDiagnosticVMOptions -XX:+AbortVMOnCompilationFailure -Xcheck:jni -XX:+WhiteBoxAPI -Xbootclasspath/a:. 94 * -XX:-TieredCompilation 95 * FieldSizeOf 96 */ 97 98 import java.lang.reflect.Field; 99 import sun.hotspot.WhiteBox; 100 101 public class FieldSizeOf { 102 103 static final Boolean compressedOops = WhiteBox.getWhiteBox().getBooleanVMFlag("UseCompressedOops"); 104 static final int R = ((compressedOops == null) || (compressedOops == true)) ? 4 : 8; 105 106 public static void main(String ... args) throws Exception { 107 testInstanceOffsets(); 108 testStaticOffsets(); 109 testNulls(); 110 } 111 112 private static void testInstanceOffsets() throws Exception { 113 testWith(1, Holder.class.getDeclaredField("f_boolean")); 114 testWith(1, Holder.class.getDeclaredField("f_byte")); 115 testWith(2, Holder.class.getDeclaredField("f_char")); 116 testWith(2, Holder.class.getDeclaredField("f_short")); 117 testWith(4, Holder.class.getDeclaredField("f_int")); 118 testWith(4, Holder.class.getDeclaredField("f_float")); 119 testWith(8, Holder.class.getDeclaredField("f_long")); 120 testWith(8, Holder.class.getDeclaredField("f_double")); 121 testWith(R, Holder.class.getDeclaredField("f_object")); 122 testWith(R, Holder.class.getDeclaredField("f_array")); 123 } 124 125 private static void testStaticOffsets() throws Exception { 126 testWith(1, Holder.class.getDeclaredField("s_boolean")); 127 testWith(1, Holder.class.getDeclaredField("s_byte")); 128 testWith(2, Holder.class.getDeclaredField("s_char")); 129 testWith(2, Holder.class.getDeclaredField("s_short")); 130 testWith(4, Holder.class.getDeclaredField("s_int")); 131 testWith(4, Holder.class.getDeclaredField("s_float")); 132 testWith(8, Holder.class.getDeclaredField("s_long")); 133 testWith(8, Holder.class.getDeclaredField("s_double")); 134 testWith(R, Holder.class.getDeclaredField("s_object")); 135 testWith(R, Holder.class.getDeclaredField("s_array")); 136 } 137 138 private static void testWith(int expected, Field f) { 139 for (int c = 0; c < RuntimeOfUtil.ITERS; c++) { 140 RuntimeOfUtil.assertEquals(expected, Runtime.fieldSizeOf(f)); 141 } 142 } 143 144 private static void testNulls() { 145 for (int c = 0; c < RuntimeOfUtil.ITERS; c++) { 146 try { 147 Runtime.fieldSizeOf(null); 148 RuntimeOfUtil.assertFail(); 149 } catch (NullPointerException e) { 150 // expected 151 } 152 } 153 } 154 155 public static class Holder { 156 static boolean s_boolean; 157 static byte s_byte; 158 static char s_char; 159 static short s_short; 160 static int s_int; 161 static float s_float; 162 static double s_double; 163 static long s_long; 164 static Object s_object; 165 static Object[] s_array; 166 boolean f_boolean; 167 byte f_byte; 168 char f_char; 169 short f_short; 170 int f_int; 171 float f_float; 172 double f_double; 173 long f_long; 174 Object f_object; 175 Object[] f_array; 176 } 177 178 }