1 /* 2 * Copyright (c) 2015, 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 8138651 27 * @modules java.base/jdk.internal.misc 28 * @library /testlibrary /test/lib 29 * @build IntrinsicDisabledTest 30 * @run main ClassFileInstaller sun.hotspot.WhiteBox 31 * sun.hotspot.WhiteBox$WhiteBoxPermission 32 * @run main/othervm -Xbootclasspath/a:. 33 * -XX:+UnlockDiagnosticVMOptions 34 * -XX:+WhiteBoxAPI 35 * -XX:DisableIntrinsic=_putCharVolatile,_putInt 36 * -XX:DisableIntrinsic=_putIntVolatile 37 * -XX:CompileCommand=option,jdk.internal.misc.Unsafe::putChar,ccstrlist,DisableIntrinsic,_getCharVolatile,_getInt 38 * -XX:CompileCommand=option,jdk.internal.misc.Unsafe::putCharVolatile,ccstrlist,DisableIntrinsic,_getIntVolatile 39 * IntrinsicDisabledTest 40 */ 41 42 import java.lang.reflect.Executable; 43 import java.util.Objects; 44 45 import sun.hotspot.WhiteBox; 46 47 import jdk.test.lib.Platform; 48 49 public class IntrinsicDisabledTest { 50 51 private static final WhiteBox wb = WhiteBox.getWhiteBox(); 52 53 /* Compilation level corresponding to C1. */ 54 private static final int COMP_LEVEL_SIMPLE = 1; 55 56 /* Compilation level corresponding to C2. */ 57 private static final int COMP_LEVEL_FULL_OPTIMIZATION = 4; 58 59 /* Determine if tiered compilation is enabled. */ 60 private static boolean isTieredCompilationEnabled() { 61 return Boolean.valueOf(Objects.toString(wb.getVMFlag("TieredCompilation"))); 62 } 63 64 /* This test uses several methods from jdk.internal.misc.Unsafe. The method 65 * getMethod() returns a different Executable for each different 66 * combination of its input parameters. There are eight possible 67 * combinations, getMethod can return an Executable representing 68 * the following methods: putChar, putCharVolatile, getChar, 69 * getCharVolatile, putInt, putIntVolatile, getInt, 70 * getIntVolatile. These methods were selected because they can 71 * be intrinsified by both the C1 and the C2 compiler. 72 */ 73 static Executable getMethod(boolean isChar, boolean isPut, boolean isVolatile) throws RuntimeException { 74 Executable aMethod; 75 String methodTypeName = isChar ? "Char" : "Int"; 76 77 try { 78 Class aClass = Class.forName("jdk.internal.misc.Unsafe"); 79 if (isPut) { 80 aMethod = aClass.getDeclaredMethod("put" + methodTypeName + (isVolatile ? "Volatile" : ""), 81 Object.class, 82 long.class, 83 isChar ? char.class : int.class); 84 } else { 85 aMethod = aClass.getDeclaredMethod("get" + methodTypeName + (isVolatile ? "Volatile" : ""), 86 Object.class, 87 long.class); 88 } 89 } catch (NoSuchMethodException e) { 90 throw new RuntimeException("Test bug, method is unavailable. " + e); 91 } catch (ClassNotFoundException e) { 92 throw new RuntimeException("Test bug, class is unavailable. " + e); 93 } 94 95 return aMethod; 96 } 97 98 public static void test(int compLevel) { 99 100 Executable putChar = getMethod(true, /*isPut =*/ true, /*isVolatile = */ false); 101 Executable getChar = getMethod(true, /*isPut =*/ false, /*isVolatile = */ false); 102 Executable putCharVolatile = getMethod(true, /*isPut =*/ true, /*isVolatile = */ true); 103 Executable getCharVolatile = getMethod(true, /*isPut =*/ false, /*isVolatile = */ true); 104 Executable putInt = getMethod(false, /*isPut =*/ true, /*isVolatile = */ false); 105 Executable getInt = getMethod(false, /*isPut =*/ false, /*isVolatile = */ false); 106 Executable putIntVolatile = getMethod(false, /*isPut =*/ true, /*isVolatile = */ true); 107 Executable getIntVolatile = getMethod(false, /*isPut =*/ false, /*isVolatile = */ true); 108 109 /* Test if globally disabling intrinsics works. */ 110 if (!wb.isIntrinsicAvailable(putChar, compLevel)) { 111 throw new RuntimeException("Intrinsic for [" + putChar.toGenericString() + 112 "] is not available globally although it should be."); 113 } 114 115 if (wb.isIntrinsicAvailable(putCharVolatile, compLevel)) { 116 throw new RuntimeException("Intrinsic for [" + putCharVolatile.toGenericString() + 117 "] is available globally although it should not be."); 118 } 119 120 if (wb.isIntrinsicAvailable(putInt, compLevel)) { 121 throw new RuntimeException("Intrinsic for [" + putInt.toGenericString() + 122 "] is available globally although it should not be."); 123 } 124 125 if (wb.isIntrinsicAvailable(putIntVolatile, compLevel)) { 126 throw new RuntimeException("Intrinsic for [" + putIntVolatile.toGenericString() + 127 "] is available globally although it should not be."); 128 } 129 130 /* Test if disabling intrinsics on a per-method level 131 * works. The method for which intrinsics are 132 * disabled (the compilation context) is putChar. */ 133 if (!wb.isIntrinsicAvailable(getChar, putChar, compLevel)) { 134 throw new RuntimeException("Intrinsic for [" + getChar.toGenericString() + 135 "] is not available for intrinsification in [" + 136 putChar.toGenericString() + "] although it should be."); 137 } 138 139 if (wb.isIntrinsicAvailable(getCharVolatile, putChar, compLevel)) { 140 throw new RuntimeException("Intrinsic for [" + getCharVolatile.toGenericString() + 141 "] is available for intrinsification in [" + 142 putChar.toGenericString() + "] although it should not be."); 143 } 144 145 if (wb.isIntrinsicAvailable(getInt, putChar, compLevel)) { 146 throw new RuntimeException("Intrinsic for [" + getInt.toGenericString() + 147 "] is available for intrinsification in [" + 148 putChar.toGenericString() + "] although it should not be."); 149 } 150 151 if (wb.isIntrinsicAvailable(getIntVolatile, putCharVolatile, compLevel)) { 152 throw new RuntimeException("Intrinsic for [" + getIntVolatile.toGenericString() + 153 "] is available for intrinsification in [" + 154 putCharVolatile.toGenericString() + "] although it should not be."); 155 } 156 157 /* Test if disabling intrinsics on a per-method level 158 * leaves those intrinsics enabled globally. */ 159 if (!wb.isIntrinsicAvailable(getCharVolatile, compLevel)) { 160 throw new RuntimeException("Intrinsic for [" + getCharVolatile.toGenericString() + 161 "] is not available globally although it should be."); 162 } 163 164 if (!wb.isIntrinsicAvailable(getInt, compLevel)) { 165 throw new RuntimeException("Intrinsic for [" + getInt.toGenericString() + 166 "] is not available globally although it should be."); 167 } 168 169 170 if (!wb.isIntrinsicAvailable(getIntVolatile, compLevel)) { 171 throw new RuntimeException("Intrinsic for [" + getIntVolatile.toGenericString() + 172 "] is not available globally although it should be."); 173 } 174 175 /* Test if disabling an intrinsic globally disables it on a 176 * per-method level as well. */ 177 if (!wb.isIntrinsicAvailable(putChar, getChar, compLevel)) { 178 throw new RuntimeException("Intrinsic for [" + putChar.toGenericString() + 179 "] is not available for intrinsification in [" + 180 getChar.toGenericString() + "] although it should be."); 181 } 182 183 if (wb.isIntrinsicAvailable(putCharVolatile, getChar, compLevel)) { 184 throw new RuntimeException("Intrinsic for [" + putCharVolatile.toGenericString() + 185 "] is available for intrinsification in [" + 186 getChar.toGenericString() + "] although it should not be."); 187 } 188 189 if (wb.isIntrinsicAvailable(putInt, getChar, compLevel)) { 190 throw new RuntimeException("Intrinsic for [" + putInt.toGenericString() + 191 "] is available for intrinsification in [" + 192 getChar.toGenericString() + "] although it should not be."); 193 } 194 195 if (wb.isIntrinsicAvailable(putIntVolatile, getChar, compLevel)) { 196 throw new RuntimeException("Intrinsic for [" + putIntVolatile.toGenericString() + 197 "] is available for intrinsification in [" + 198 getChar.toGenericString() + "] although it should not be."); 199 } 200 } 201 202 public static void main(String args[]) { 203 if (Platform.isServer()) { 204 if (isTieredCompilationEnabled()) { 205 test(COMP_LEVEL_SIMPLE); 206 } 207 test(COMP_LEVEL_FULL_OPTIMIZATION); 208 } else { 209 test(COMP_LEVEL_SIMPLE); 210 } 211 } 212 }