GetSymbolTest.java revision 9111:a41fe5ffa839 
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 8136421
27 * @requires (os.simpleArch == "x64" | os.simpleArch == "sparcv9") & os.arch != "aarch64"
28 * @library / /testlibrary /../../test/lib
29 * @compile ../common/CompilerToVMHelper.java
30 * @build compiler.jvmci.compilerToVM.GetSymbolTest
31 * @run main ClassFileInstaller jdk.vm.ci.hotspot.CompilerToVMHelper
32 *                              compiler.jvmci.common.testcases.SingleImplementer
33 *                              compiler.jvmci.common.testcases.SingleImplementerInterface
34 *                              compiler.jvmci.compilerToVM.GetSymbolTest
35 *                              compiler.jvmci.common.CTVMUtilities
36 *                              jdk.test.lib.Utils
37 *                              jdk.test.lib.Asserts
38 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI
39 *     -Xbootclasspath/a:. compiler.jvmci.compilerToVM.GetSymbolTest
40 */
41
42package compiler.jvmci.compilerToVM;
43
44import jdk.vm.ci.hotspot.CompilerToVMHelper;
45import compiler.jvmci.common.CTVMUtilities;
46import compiler.jvmci.common.testcases.SingleImplementer;
47import java.lang.reflect.Field;
48import java.lang.reflect.Member;
49import java.lang.reflect.Method;
50import java.util.ArrayList;
51import java.util.List;
52import java.util.function.Function;
53import java.util.stream.Collectors;
54import java.util.stream.Stream;
55import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethodImpl;
56import jdk.vm.ci.meta.ConstantPool;
57import jdk.test.lib.Utils;
58
59public class GetSymbolTest {
60    private static final int CONSTANT_POOL_UTF8_TAG = 1; // see jvms, section 4.4
61
62    private static final Function<Member[], List<String>> NAMES = members ->
63            Stream.of(members)
64                    .map(Member::getName)
65                    .collect(Collectors.toList());
66
67    public static void main(String[] args) {
68        new GetSymbolTest().test(SingleImplementer.class);
69    }
70
71    private void test(Class<?> aClass) {
72        Utils.ensureClassIsLoaded(aClass);
73        Method method;
74        try {
75            method = aClass.getDeclaredMethod("nonInterfaceMethod");
76        } catch (NoSuchMethodException e) {
77            throw new Error("TEST BUG: can't find test method", e);
78        }
79        HotSpotResolvedJavaMethodImpl resolvedMethod
80                = CTVMUtilities.getResolvedMethod(aClass, method);
81        List<String> symbols;
82        try {
83            symbols = getSymbols(resolvedMethod);
84        } catch (ReflectiveOperationException e) {
85            throw new Error("TEST BUG: can't access private members", e);
86        }
87        List<String> classSymbols = new ArrayList<>();
88        classSymbols.addAll(NAMES.apply(aClass.getDeclaredFields()));
89        classSymbols.addAll(NAMES.apply(aClass.getDeclaredMethods()));
90        // Check that all members of test class have symbols from constant pool
91        for (String s : classSymbols) {
92            if (!symbols.contains(s)) {
93                // failed. print all symbols found by getSymbol
94                System.out.println("getSymbol data:");
95                for (String ctvmValue : symbols) {
96                    System.out.println(ctvmValue);
97                }
98                throw new AssertionError("Unable to find symbol " + s
99                        + " using CompilerToVM.getSymbol");
100            }
101        }
102    }
103
104    private List<String> getSymbols(HotSpotResolvedJavaMethodImpl
105            metaspaceMethod) throws ReflectiveOperationException {
106        List<String> symbols = new ArrayList<>();
107        ConstantPool pool = metaspaceMethod.getConstantPool();
108        long length = pool.length();
109        // jvms-4.1: The constant_pool table is indexed from 1 ...
110        for (int i = 1; i < length; i++) {
111            if (getTag(pool, i) == CONSTANT_POOL_UTF8_TAG) {
112                long entryPointer;
113                Method getEntryAt = pool.getClass()
114                        .getDeclaredMethod("getEntryAt", int.class);
115                getEntryAt.setAccessible(true);
116                entryPointer = (Long) getEntryAt.invoke(pool, i);
117                String symbol = CompilerToVMHelper.getSymbol(entryPointer);
118                symbols.add(symbol);
119            }
120        }
121        return symbols;
122    }
123
124    private int getTag(ConstantPool pool, int index)
125            throws ReflectiveOperationException {
126        Object jvmConstant;
127        Method getTag = pool.getClass().getDeclaredMethod("getTagAt",
128                int.class);
129        getTag.setAccessible(true);
130        jvmConstant = getTag.invoke(pool, index);
131        Field tagCode = jvmConstant.getClass().getDeclaredField("tag");
132        tagCode.setAccessible(true);
133        return tagCode.getInt(jvmConstant);
134    }
135}
136