1 /* 2 * Copyright (c) 2016, 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 8138708 27 * @requires vm.jvmci 28 * @library /test/lib / 29 * @library ../common/patches 30 * @modules java.base/jdk.internal.misc 31 * java.base/jdk.internal.reflect 32 * java.base/jdk.internal.org.objectweb.asm 33 * java.base/jdk.internal.org.objectweb.asm.tree 34 * jdk.vm.ci/jdk.vm.ci.hotspot 35 * jdk.vm.ci/jdk.vm.ci.meta 36 * jdk.vm.ci/jdk.vm.ci.runtime 37 * 38 * @build jdk.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper sun.hotspot.WhiteBox 39 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 40 * sun.hotspot.WhiteBox$WhiteBoxPermission 41 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 42 * -XX:+WhiteBoxAPI -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI 43 * compiler.jvmci.compilerToVM.ResolveFieldInPoolTest 44 */ 45 46 package compiler.jvmci.compilerToVM; 47 48 import compiler.jvmci.compilerToVM.ConstantPoolTestCase.ConstantTypes; 49 import compiler.jvmci.compilerToVM.ConstantPoolTestCase.TestedCPEntry; 50 import compiler.jvmci.compilerToVM.ConstantPoolTestCase.Validator; 51 import compiler.jvmci.compilerToVM.ConstantPoolTestsHelper.DummyClasses; 52 import jdk.internal.misc.Unsafe; 53 import jdk.internal.org.objectweb.asm.Opcodes; 54 import jdk.test.lib.Asserts; 55 import jdk.vm.ci.hotspot.CompilerToVMHelper; 56 import jdk.vm.ci.hotspot.HotSpotResolvedObjectType; 57 import jdk.vm.ci.meta.ConstantPool; 58 59 import java.lang.reflect.Field; 60 import java.util.HashMap; 61 import java.util.Map; 62 63 import static compiler.jvmci.compilerToVM.ConstantPoolTestCase.ConstantTypes.CONSTANT_FIELDREF; 64 65 /** 66 * Test for {@code jdk.vm.ci.hotspot.CompilerToVM.resolveFieldInPool} method 67 */ 68 public class ResolveFieldInPoolTest { 69 70 private static final Unsafe UNSAFE = Unsafe.getUnsafe(); 71 72 public static void main(String[] args) throws Exception { 73 Map<ConstantTypes, Validator> typeTests = new HashMap<>(); 74 typeTests.put(CONSTANT_FIELDREF, ResolveFieldInPoolTest::validate); 75 ConstantPoolTestCase testCase = new ConstantPoolTestCase(typeTests); 76 testCase.test(); 77 // The next "Class.forName" and repeating "testCase.test()" 78 // are here for the following reason. 79 // The first test run is without dummy class initialization, 80 // which means no constant pool cache exists. 81 // The second run is with initialized class (with constant pool cache available). 82 // Some CompilerToVM methods require different input 83 // depending on whether CP cache exists or not. 84 for (DummyClasses dummy : DummyClasses.values()) { 85 Class.forName(dummy.klass.getName()); 86 } 87 testCase.test(); 88 } 89 90 private static void validate(ConstantPool constantPoolCTVM, 91 ConstantTypes cpType, 92 DummyClasses dummyClass, 93 int cpi) { 94 TestedCPEntry entry = cpType.getTestedCPEntry(dummyClass, cpi); 95 if (entry == null) { 96 return; 97 } 98 int index = cpi; 99 String cached = ""; 100 int cpci = dummyClass.getCPCacheIndex(cpi); 101 if (cpci != ConstantPoolTestsHelper.NO_CP_CACHE_PRESENT) { 102 index = cpci; 103 cached = "cached "; 104 } 105 for (int j = 0; j < entry.opcodes.length; j++) { 106 long[] info = new long[2]; 107 HotSpotResolvedObjectType fieldToVerify 108 = CompilerToVMHelper.resolveFieldInPool(constantPoolCTVM, 109 index, 110 entry.methods == null ? null : entry.methods[j], 111 entry.opcodes[j], 112 info); 113 String msg = String.format("Object returned by resolveFieldInPool method" 114 + " for %sindex %d should not be null", 115 cached, 116 index); 117 Asserts.assertNotNull(fieldToVerify, msg); 118 String classNameToRefer = entry.klass; 119 String fieldToVerifyKlassToString = fieldToVerify.klass().toValueString(); 120 if (!fieldToVerifyKlassToString.contains(classNameToRefer)) { 121 msg = String.format("String representation \"%s\" of the object" 122 + " returned by resolveFieldInPool method" 123 + " for index %d does not contain a field's class name," 124 + " should contain %s", 125 fieldToVerifyKlassToString, 126 index, 127 classNameToRefer); 128 throw new AssertionError(msg); 129 } 130 msg = String.format("Access flags returned by resolveFieldInPool" 131 + " method are wrong for the field %s.%s" 132 + " at %sindex %d", 133 entry.klass, 134 entry.name, 135 cached, 136 index); 137 Asserts.assertEQ(info[0], entry.accFlags, msg); 138 if (cpci == -1) { 139 return; 140 } 141 Class classOfTheField = null; 142 Field fieldToRefer = null; 143 try { 144 classOfTheField = Class.forName(classNameToRefer.replaceAll("/", "\\.")); 145 fieldToRefer = classOfTheField.getDeclaredField(entry.name); 146 fieldToRefer.setAccessible(true); 147 } catch (Exception ex) { 148 throw new Error("Unexpected exception", ex); 149 } 150 long offsetToRefer; 151 if ((entry.accFlags & Opcodes.ACC_STATIC) != 0) { 152 offsetToRefer = UNSAFE.staticFieldOffset(fieldToRefer); 153 } else { 154 offsetToRefer = UNSAFE.objectFieldOffset(fieldToRefer); 155 } 156 msg = String.format("Field offset returned by resolveFieldInPool" 157 + " method is wrong for the field %s.%s" 158 + " at %sindex %d", 159 entry.klass, 160 entry.name, 161 cached, 162 index); 163 Asserts.assertEQ(info[1], offsetToRefer, msg); 164 } 165 } 166 }