1 /* 2 * Copyright (c) 2015, 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 8136421 27 * @requires vm.jvmci 28 * @library / /test/lib 29 * @library ../common/patches 30 * @modules java.base/jdk.internal.misc:+open 31 * @modules java.base/jdk.internal.org.objectweb.asm 32 * java.base/jdk.internal.org.objectweb.asm.tree 33 * @modules jdk.internal.vm.ci/jdk.vm.ci.hotspot:+open 34 * jdk.internal.vm.ci/jdk.vm.ci.code 35 * jdk.internal.vm.ci/jdk.vm.ci.meta 36 * @build jdk.internal.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper 37 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI 38 * -Djvmci.Compiler=null 39 * compiler.jvmci.compilerToVM.GetSymbolTest 40 */ 41 42 package compiler.jvmci.compilerToVM; 43 44 import compiler.jvmci.common.CTVMUtilities; 45 import compiler.jvmci.common.testcases.SingleImplementer; 46 import jdk.test.lib.Utils; 47 import jdk.vm.ci.hotspot.CompilerToVMHelper; 48 import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod; 49 import jdk.vm.ci.meta.ConstantPool; 50 51 import java.lang.reflect.Field; 52 import java.lang.reflect.Member; 53 import java.lang.reflect.Method; 54 import java.util.ArrayList; 55 import java.util.List; 56 import java.util.function.Function; 57 import java.util.stream.Collectors; 58 import java.util.stream.Stream; 59 60 public class GetSymbolTest { 61 private static final int CONSTANT_POOL_UTF8_TAG = 1; // see jvms, section 4.4 62 63 private static final Function<Member[], List<String>> NAMES = members -> 64 Stream.of(members) 65 .map(Member::getName) 66 .collect(Collectors.toList()); 67 68 public static void main(String[] args) { 69 new GetSymbolTest().test(SingleImplementer.class); 70 } 71 72 private void test(Class<?> aClass) { 73 Utils.ensureClassIsLoaded(aClass); 74 Method method; 75 try { 76 method = aClass.getDeclaredMethod("nonInterfaceMethod"); 77 } catch (NoSuchMethodException e) { 78 throw new Error("TEST BUG: can't find test method", e); 79 } 80 HotSpotResolvedJavaMethod resolvedMethod 81 = CTVMUtilities.getResolvedMethod(aClass, method); 82 List<String> symbols; 83 try { 84 symbols = getSymbols(resolvedMethod); 85 } catch (ReflectiveOperationException e) { 86 throw new Error("TEST BUG: can't access private members", e); 87 } 88 List<String> classSymbols = new ArrayList<>(); 89 classSymbols.addAll(NAMES.apply(aClass.getDeclaredFields())); 90 classSymbols.addAll(NAMES.apply(aClass.getDeclaredMethods())); 91 // Check that all members of test class have symbols from constant pool 92 for (String s : classSymbols) { 93 if (!symbols.contains(s)) { 94 // failed. print all symbols found by getSymbol 95 System.out.println("getSymbol data:"); 96 for (String ctvmValue : symbols) { 97 System.out.println(ctvmValue); 98 } 99 throw new AssertionError("Unable to find symbol " + s 100 + " using CompilerToVM.getSymbol"); 101 } 102 } 103 } 104 105 private List<String> getSymbols(HotSpotResolvedJavaMethod 106 metaspaceMethod) throws ReflectiveOperationException { 107 List<String> symbols = new ArrayList<>(); 108 ConstantPool pool = metaspaceMethod.getConstantPool(); 109 long length = pool.length(); 110 // jvms-4.1: The constant_pool table is indexed from 1 ... 111 for (int i = 1; i < length; i++) { 112 if (getTag(pool, i) == CONSTANT_POOL_UTF8_TAG) { 113 long entryPointer; 114 Method getEntryAt = pool.getClass() 115 .getDeclaredMethod("getEntryAt", int.class); 116 getEntryAt.setAccessible(true); 117 entryPointer = (Long) getEntryAt.invoke(pool, i); 118 String symbol = CompilerToVMHelper.getSymbol(entryPointer); 119 symbols.add(symbol); 120 } 121 } 122 return symbols; 123 } 124 125 private int getTag(ConstantPool pool, int index) 126 throws ReflectiveOperationException { 127 Object jvmConstant; 128 Method getTag = pool.getClass().getDeclaredMethod("getTagAt", 129 int.class); 130 getTag.setAccessible(true); 131 jvmConstant = getTag.invoke(pool, index); 132 Field tagCode = jvmConstant.getClass().getDeclaredField("tag"); 133 tagCode.setAccessible(true); 134 return tagCode.getInt(jvmConstant); 135 } 136 }