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 }