ResolveConstantInPoolTest.java revision 12772:fbb9c8026495 
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
31 *          java.base/jdk.internal.reflect
32 *          java.base/jdk.internal.org.objectweb.asm
33 *          jdk.internal.vm.ci/jdk.vm.ci.hotspot
34 *          jdk.internal.vm.ci/jdk.vm.ci.runtime
35 *          jdk.internal.vm.ci/jdk.vm.ci.meta
36 *
37 * @build jdk.internal.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper sun.hotspot.WhiteBox
38 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
39 *                                sun.hotspot.WhiteBox$WhiteBoxPermission
40 * @run main/othervm -Xbootclasspath/a:.
41 *                   -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI
42 *                   -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
43 *                   -Djvmci.Compiler=null
44 *                   compiler.jvmci.compilerToVM.ResolveConstantInPoolTest
45 */
46
47package compiler.jvmci.compilerToVM;
48
49import compiler.jvmci.compilerToVM.ConstantPoolTestCase.ConstantTypes;
50import compiler.jvmci.compilerToVM.ConstantPoolTestCase.Validator;
51import compiler.jvmci.compilerToVM.ConstantPoolTestsHelper.DummyClasses;
52import jdk.test.lib.Asserts;
53import jdk.vm.ci.hotspot.CompilerToVMHelper;
54import jdk.vm.ci.meta.ConstantPool;
55
56import java.lang.invoke.MethodHandle;
57import java.lang.invoke.MethodType;
58import java.util.HashMap;
59import java.util.Map;
60
61import static compiler.jvmci.compilerToVM.ConstantPoolTestCase.ConstantTypes.CONSTANT_METHODHANDLE;
62import static compiler.jvmci.compilerToVM.ConstantPoolTestCase.ConstantTypes.CONSTANT_METHODTYPE;
63
64/**
65 * Test for {@code jdk.vm.ci.hotspot.CompilerToVM.resolveConstantInPool} method
66 */
67public class ResolveConstantInPoolTest {
68
69    private static final String NOT_NULL_MSG
70            = "Object returned by resolveConstantInPool method should not be null";
71
72    public static void main(String[] args) throws Exception {
73        Map<ConstantTypes, Validator> typeTests = new HashMap<>();
74        typeTests.put(CONSTANT_METHODHANDLE, ResolveConstantInPoolTest::validateMethodHandle);
75        typeTests.put(CONSTANT_METHODTYPE, ResolveConstantInPoolTest::validateMethodType);
76        ConstantPoolTestCase testCase = new ConstantPoolTestCase(typeTests);
77        testCase.test();
78        // The next "Class.forName" and repeating "testCase.test()"
79        // are here for the following reason.
80        // The first test run is without dummy class initialization,
81        // which means no constant pool cache exists.
82        // The second run is with initialized class (with constant pool cache available).
83        // Some CompilerToVM methods require different input
84        // depending on whether CP cache exists or not.
85        for (DummyClasses dummy : DummyClasses.values()) {
86            Class.forName(dummy.klass.getName());
87        }
88        testCase.test();
89    }
90
91    private static void validateMethodHandle(ConstantPool constantPoolCTVM,
92                                             ConstantTypes cpType,
93                                             DummyClasses dummyClass,
94                                             int index) {
95        Object constantInPool = CompilerToVMHelper.resolveConstantInPool(constantPoolCTVM, index);
96        String msg = String.format("%s for index %d", NOT_NULL_MSG, index);
97        Asserts.assertNotNull(constantInPool, msg);
98        if (!(constantInPool instanceof MethodHandle)) {
99            msg = String.format("Wrong constant pool entry accessed by index"
100                                        + " %d: %s, but should be subclass of %s",
101                                index,
102                                constantInPool.getClass(),
103                                MethodHandle.class.getName());
104            throw new AssertionError(msg);
105        }
106    }
107
108    private static void validateMethodType(ConstantPool constantPoolCTVM,
109                                           ConstantTypes cpType,
110                                           DummyClasses dummyClass,
111                                           int index) {
112        Object constantInPool = CompilerToVMHelper.resolveConstantInPool(constantPoolCTVM, index);
113        String msg = String.format("%s for index %d", NOT_NULL_MSG, index);
114        Asserts.assertNotNull(constantInPool, msg);
115        Class mtToVerify = constantInPool.getClass();
116        Class mtToRefer = MethodType.class;
117        msg = String.format("Wrong method type class accessed by"
118                                    + " constant pool index %d",
119                            index);
120        Asserts.assertEQ(mtToRefer, mtToVerify, msg);
121    }
122}
123