ResolvePossiblyCachedConstantInPoolTest.java revision 11707:ad7af1afda7a 
1/*
2 * Copyright (c) 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/*
26 * @test
27 * @bug 8138708
28 * @requires (vm.simpleArch == "x64" | vm.simpleArch == "sparcv9" | vm.simpleArch == "aarch64")
29 * @library /testlibrary /test/lib /
30 * @library ../common/patches
31 * @modules java.base/jdk.internal.misc
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.vm.ci/jdk.vm.ci.hotspot
36 *          jdk.vm.ci/jdk.vm.ci.runtime
37 *          jdk.vm.ci/jdk.vm.ci.meta
38 *
39 * @build jdk.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper
40 * @build sun.hotspot.WhiteBox
41 *        compiler.jvmci.compilerToVM.ResolvePossiblyCachedConstantInPoolTest
42 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
43 *                                sun.hotspot.WhiteBox$WhiteBoxPermission
44 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
45 *                   -XX:+WhiteBoxAPI -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI
46 *                   compiler.jvmci.compilerToVM.ResolvePossiblyCachedConstantInPoolTest
47 */
48
49package compiler.jvmci.compilerToVM;
50
51import compiler.jvmci.compilerToVM.ConstantPoolTestCase.ConstantTypes;
52import compiler.jvmci.compilerToVM.ConstantPoolTestCase.TestedCPEntry;
53import compiler.jvmci.compilerToVM.ConstantPoolTestCase.Validator;
54import compiler.jvmci.compilerToVM.ConstantPoolTestsHelper.DummyClasses;
55import jdk.test.lib.Asserts;
56import jdk.vm.ci.hotspot.CompilerToVMHelper;
57import jdk.vm.ci.meta.ConstantPool;
58
59import java.util.HashMap;
60import java.util.Map;
61
62import static compiler.jvmci.compilerToVM.ConstantPoolTestCase.ConstantTypes.CONSTANT_STRING;
63
64/**
65 * Test for {@code jdk.vm.ci.hotspot.CompilerToVM.resolvePossiblyCachedConstantInPool} method
66 */
67public class ResolvePossiblyCachedConstantInPoolTest {
68
69    public static void main(String[] args) throws Exception {
70        Map<ConstantTypes, Validator> typeTests = new HashMap<>();
71        typeTests.put(CONSTANT_STRING, ResolvePossiblyCachedConstantInPoolTest::validateString);
72        ConstantPoolTestCase testCase = new ConstantPoolTestCase(typeTests);
73        // The next "Class.forName" is here for the following reason.
74        // When class is initialized, constant pool cache is available.
75        // This method works only with cached constant pool.
76        for (DummyClasses dummy : DummyClasses.values()) {
77            Class.forName(dummy.klass.getName());
78        }
79        testCase.test();
80    }
81
82    private static void validateString(ConstantPool constantPoolCTVM,
83                                       ConstantTypes cpType,
84                                       DummyClasses dummyClass,
85                                       int cpi) {
86        TestedCPEntry entry = cpType.getTestedCPEntry(dummyClass, cpi);
87        if (entry == null) {
88            return;
89        }
90        int index = cpi;
91        String cached = "";
92        int cpci = dummyClass.getCPCacheIndex(cpi);
93        if (cpci != ConstantPoolTestsHelper.NO_CP_CACHE_PRESENT) {
94            index = cpci;
95            cached = "cached ";
96        }
97        Object constantInPool = CompilerToVMHelper.resolvePossiblyCachedConstantInPool(constantPoolCTVM, index);
98        String stringToVerify = (String) constantInPool;
99        String stringToRefer = entry.name;
100        if (stringToRefer.equals("") && cpci != ConstantPoolTestsHelper.NO_CP_CACHE_PRESENT) {
101            stringToRefer = null; // tested method returns null for cached empty strings
102        }
103        String msg = String.format("Wrong string accessed by %sconstant pool index %d", cached, index);
104        Asserts.assertEQ(stringToRefer, stringToVerify, msg);
105    }
106}
107