1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
/*
* Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 8136421
* @requires vm.jvmci
* @library / /test/lib
* @library ../common/patches
* @modules java.base/jdk.internal.misc:+open
* @modules java.base/jdk.internal.org.objectweb.asm
* java.base/jdk.internal.org.objectweb.asm.tree
* @modules jdk.internal.vm.ci/jdk.vm.ci.hotspot:+open
* jdk.internal.vm.ci/jdk.vm.ci.code
* jdk.internal.vm.ci/jdk.vm.ci.meta
* @build jdk.internal.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper
* @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI
* -Djvmci.Compiler=null
* compiler.jvmci.compilerToVM.GetSymbolTest
*/
package compiler.jvmci.compilerToVM;
import compiler.jvmci.common.CTVMUtilities;
import compiler.jvmci.common.testcases.SingleImplementer;
import jdk.test.lib.Utils;
import jdk.vm.ci.hotspot.CompilerToVMHelper;
import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod;
import jdk.vm.ci.meta.ConstantPool;
import java.lang.reflect.Field;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import java.util.function.Function;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class GetSymbolTest {
private static final int CONSTANT_POOL_UTF8_TAG = 1; // see jvms, section 4.4
private static final Function<Member[], List<String>> NAMES = members ->
Stream.of(members)
.map(Member::getName)
.collect(Collectors.toList());
public static void main(String[] args) {
new GetSymbolTest().test(SingleImplementer.class);
}
private void test(Class<?> aClass) {
Utils.ensureClassIsLoaded(aClass);
Method method;
try {
method = aClass.getDeclaredMethod("nonInterfaceMethod");
} catch (NoSuchMethodException e) {
throw new Error("TEST BUG: can't find test method", e);
}
HotSpotResolvedJavaMethod resolvedMethod
= CTVMUtilities.getResolvedMethod(aClass, method);
List<String> symbols;
try {
symbols = getSymbols(resolvedMethod);
} catch (ReflectiveOperationException e) {
throw new Error("TEST BUG: can't access private members", e);
}
List<String> classSymbols = new ArrayList<>();
classSymbols.addAll(NAMES.apply(aClass.getDeclaredFields()));
classSymbols.addAll(NAMES.apply(aClass.getDeclaredMethods()));
// Check that all members of test class have symbols from constant pool
for (String s : classSymbols) {
if (!symbols.contains(s)) {
// failed. print all symbols found by getSymbol
System.out.println("getSymbol data:");
for (String ctvmValue : symbols) {
System.out.println(ctvmValue);
}
throw new AssertionError("Unable to find symbol " + s
+ " using CompilerToVM.getSymbol");
}
}
}
private List<String> getSymbols(HotSpotResolvedJavaMethod
metaspaceMethod) throws ReflectiveOperationException {
List<String> symbols = new ArrayList<>();
ConstantPool pool = metaspaceMethod.getConstantPool();
long length = pool.length();
// jvms-4.1: The constant_pool table is indexed from 1 ...
for (int i = 1; i < length; i++) {
if (getTag(pool, i) == CONSTANT_POOL_UTF8_TAG) {
long entryPointer;
Method getEntryAt = pool.getClass()
.getDeclaredMethod("getEntryAt", int.class);
getEntryAt.setAccessible(true);
entryPointer = (Long) getEntryAt.invoke(pool, i);
String symbol = CompilerToVMHelper.getSymbol(entryPointer);
symbols.add(symbol);
}
}
return symbols;
}
private int getTag(ConstantPool pool, int index)
throws ReflectiveOperationException {
Object jvmConstant;
Method getTag = pool.getClass().getDeclaredMethod("getTagAt",
int.class);
getTag.setAccessible(true);
jvmConstant = getTag.invoke(pool, index);
Field tagCode = jvmConstant.getClass().getDeclaredField("tag");
tagCode.setAccessible(true);
return tagCode.getInt(jvmConstant);
}
}
|
