1 /*
2  * Copyright (c) 2015, 2020, 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  * @summary Testing compiler.jvmci.CompilerToVM.lookupKlassInPool method
29  * @library /test/lib /
30  * @library ../common/patches
31  * @modules java.base/jdk.internal.access
32  *          java.base/jdk.internal.reflect
33  *          java.base/jdk.internal.org.objectweb.asm
34  *          java.base/jdk.internal.org.objectweb.asm.tree
35  *          jdk.internal.vm.ci/jdk.vm.ci.hotspot
36  *          jdk.internal.vm.ci/jdk.vm.ci.runtime
37  *          jdk.internal.vm.ci/jdk.vm.ci.meta
38  *
39  * @build jdk.internal.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper sun.hotspot.WhiteBox
40  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
41  * @run main/othervm -Xbootclasspath/a:.
42  *                   -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI
43  *                   -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
44  *                   -XX:-UseJVMCICompiler
45  *                   compiler.jvmci.compilerToVM.LookupKlassInPoolTest
46  */
47 
48 package compiler.jvmci.compilerToVM;
49 
50 import compiler.jvmci.compilerToVM.ConstantPoolTestCase.ConstantTypes;
51 import compiler.jvmci.compilerToVM.ConstantPoolTestCase.TestedCPEntry;
52 import compiler.jvmci.compilerToVM.ConstantPoolTestCase.Validator;
53 import compiler.jvmci.compilerToVM.ConstantPoolTestsHelper.DummyClasses;
54 import jdk.vm.ci.hotspot.CompilerToVMHelper;
55 import jdk.vm.ci.hotspot.HotSpotResolvedObjectType;
56 import jdk.vm.ci.meta.ConstantPool;
57 
58 import java.util.HashMap;
59 import java.util.Map;
60 
61 import static compiler.jvmci.compilerToVM.ConstantPoolTestCase.ConstantTypes.CONSTANT_CLASS;
62 
63 /**
64  * Test for {@code jdk.vm.ci.hotspot.CompilerToVM.lookupKlassInPool} method
65  */
66 public class LookupKlassInPoolTest {
67 
main(String[] args)68     public static void main(String[] args) throws Exception  {
69         Map<ConstantTypes, Validator> typeTests = new HashMap<>();
70         typeTests.put(CONSTANT_CLASS, LookupKlassInPoolTest::validate);
71         ConstantPoolTestCase testCase = new ConstantPoolTestCase(typeTests);
72         testCase.test();
73         // The next "Class.forName" and repeating "testCase.test()"
74         // are here for the following reason.
75         // The first test run is without dummy class initialization,
76         // which means no constant pool cache exists.
77         // The second run is with initialized class (with constant pool cache available).
78         // Some CompilerToVM methods require different input
79         // depending on whether CP cache exists or not.
80         for (DummyClasses dummy : DummyClasses.values()) {
81             Class.forName(dummy.klass.getName());
82         }
83         testCase.test();
84     }
85 
validate(ConstantPool constantPoolCTVM, ConstantTypes cpType, DummyClasses dummyClass, int i)86     public static void validate(ConstantPool constantPoolCTVM,
87                                 ConstantTypes cpType,
88                                 DummyClasses dummyClass,
89                                 int i) {
90         TestedCPEntry entry = cpType.getTestedCPEntry(dummyClass, i);
91         if (entry == null) {
92             return;
93         }
94         Object classToVerify = CompilerToVMHelper.lookupKlassInPool(constantPoolCTVM, i);
95         if (!(classToVerify instanceof HotSpotResolvedObjectType) && !(classToVerify instanceof String)) {
96             String msg = String.format("Output of method CTVM.lookupKlassInPool is neither"
97                                                + " a HotSpotResolvedObjectType, nor a String");
98             throw new AssertionError(msg);
99         }
100         String classNameToRefer = entry.klass;
101         String outputToVerify = classToVerify.toString();
102         if (!outputToVerify.contains(classNameToRefer)) {
103             String msg = String.format("Wrong class accessed by constant pool index %d: %s, but should be %s",
104                                        i,
105                                        outputToVerify,
106                                        classNameToRefer);
107             throw new AssertionError(msg);
108         }
109     }
110 }
111