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  * @modules java.base/jdk.internal.org.objectweb.asm
  32  *          java.base/jdk.internal.org.objectweb.asm.tree
  33  *          jdk.internal.vm.ci/jdk.vm.ci.hotspot
  34  *          jdk.internal.vm.ci/jdk.vm.ci.code
  35  * @build jdk.internal.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper
  36  * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI
  37  *                   compiler.jvmci.compilerToVM.ResolveMethodTest
  38  */
  39 
  40 package compiler.jvmci.compilerToVM;
  41 
  42 import compiler.jvmci.common.CTVMUtilities;
  43 import compiler.jvmci.common.testcases.AbstractClass;
  44 import compiler.jvmci.common.testcases.AbstractClassExtender;
  45 import compiler.jvmci.common.testcases.MultipleImplementer1;
  46 import compiler.jvmci.common.testcases.MultipleImplementer2;
  47 import compiler.jvmci.common.testcases.MultipleImplementersInterface;
  48 import compiler.jvmci.common.testcases.SingleImplementer;
  49 import compiler.jvmci.common.testcases.SingleImplementerInterface;
  50 import compiler.jvmci.common.testcases.SingleSubclass;
  51 import compiler.jvmci.common.testcases.SingleSubclassedClass;
  52 import jdk.internal.misc.Unsafe;
  53 import jdk.test.lib.Asserts;
  54 import jdk.test.lib.Utils;
  55 import jdk.vm.ci.hotspot.CompilerToVMHelper;
  56 import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod;
  57 import jdk.vm.ci.hotspot.HotSpotResolvedObjectType;
  58 
  59 import java.util.HashSet;
  60 import java.util.Set;
  61 
  62 public class ResolveMethodTest {
  63     private static final Unsafe UNSAFE = Unsafe.getUnsafe();
  64 
  65     public static void main(String args[]) {
  66         ResolveMethodTest test = new ResolveMethodTest();
  67         // positive cases
  68         try {
  69             for (TestCase tcase: createTestCases()) {
  70                 test.runTest(tcase);
  71             }
  72         } catch (NoSuchMethodException e) {
  73             throw new Error("TEST BUG: can't find requested method", e);
  74         }
  75     }
  76 
  77     private static Set<TestCase> createTestCases() {
  78         Set<TestCase> result = new HashSet<>();
  79         // a usual class public method
  80         result.add(new TestCase(SingleSubclass.class, SingleSubclass.class,
  81                 "usualMethod", ResolveMethodTest.class, true));
  82         // an array method
  83         result.add(new TestCase(int[].class, Object.class, "toString",
  84                 ResolveMethodTest.class, true));
  85         // a method from base class, which was overriden in tested one
  86         result.add(new TestCase(SingleSubclass.class, SingleSubclass.class,
  87                 "overridenMethod", ResolveMethodTest.class, true));
  88         // a method from base class, which was not overriden in tested one
  89         result.add(new TestCase(SingleSubclass.class,
  90                 SingleSubclassedClass.class, "inheritedMethod",
  91                 ResolveMethodTest.class, true));
  92         /* a method from base class, which was overriden in tested one with
  93            base class as holder */
  94         result.add(new TestCase(SingleSubclass.class,
  95                 SingleSubclassedClass.class, "overridenMethod",
  96                 ResolveMethodTest.class, true));
  97         // an interface method
  98         result.add(new TestCase(SingleImplementer.class,
  99                 SingleImplementerInterface.class, "interfaceMethod",
 100                 ResolveMethodTest.class, true));
 101         // an interface default method overriden in implementer
 102         result.add(new TestCase(MultipleImplementer1.class,
 103                 MultipleImplementersInterface.class, "defaultMethod",
 104                 ResolveMethodTest.class, true));
 105         // an interface default method not overriden in implementer
 106         result.add(new TestCase(MultipleImplementer2.class,
 107                 MultipleImplementersInterface.class, "defaultMethod",
 108                 ResolveMethodTest.class, true));
 109         // an abstract method
 110         result.add(new TestCase(AbstractClassExtender.class, AbstractClass.class,
 111                 "abstractMethod", ResolveMethodTest.class, true));
 112         // private method with right accessor
 113         result.add(new TestCase(SingleSubclass.class, SingleSubclass.class,
 114                 "privateMethod", SingleSubclass.class, true));
 115         // package-private method with right accessor
 116         result.add(new TestCase(SingleSubclass.class, SingleSubclass.class,
 117                 "defaultAccessMethod", SingleSubclass.class, true));
 118 
 119         // negative cases
 120 
 121         // private method of another class
 122         result.add(new TestCase(SingleSubclass.class, SingleSubclass.class,
 123                 "privateMethod", ResolveMethodTest.class, false));
 124         // package-private method from another package
 125         result.add(new TestCase(SingleSubclass.class, SingleSubclass.class,
 126                 "defaultAccessMethod", ResolveMethodTest.class, false));
 127         return result;
 128     }
 129 
 130     private void runTest(TestCase tcase) throws NoSuchMethodException {
 131         System.out.println(tcase);
 132         HotSpotResolvedJavaMethod metaspaceMethod = CTVMUtilities
 133                 .getResolvedMethod(tcase.holder,
 134                         tcase.holder.getDeclaredMethod(tcase.methodName));
 135         HotSpotResolvedObjectType holderMetaspace = CompilerToVMHelper
 136                 .lookupType(Utils.toJVMTypeSignature(tcase.holder),
 137                         getClass(), /* resolve = */ true);
 138         HotSpotResolvedObjectType callerMetaspace = CompilerToVMHelper
 139                 .lookupType(Utils.toJVMTypeSignature(tcase.caller),
 140                         getClass(), /* resolve = */ true);
 141         HotSpotResolvedObjectType receiverMetaspace = CompilerToVMHelper
 142                 .lookupType(Utils.toJVMTypeSignature(tcase.receiver),
 143                         getClass(), /* resolve = */ true);
 144 
 145         // Can only resolve methods on a linked class so force initialization
 146         receiverMetaspace.initialize();
 147         HotSpotResolvedJavaMethod resolvedMetaspaceMethod
 148                 = CompilerToVMHelper.resolveMethod(receiverMetaspace,
 149                         metaspaceMethod, callerMetaspace);
 150         if (tcase.isPositive) {
 151             Asserts.assertNotNull(resolvedMetaspaceMethod,
 152                     "Unexpected null resolved method value for "
 153                             + tcase.methodName);
 154             Asserts.assertEQ(metaspaceMethod.getName(), tcase.methodName,
 155                     "Reflection and c2vm method names doesn't match");
 156         } else {
 157             Asserts.assertNull(resolvedMetaspaceMethod,
 158                     "Method unexpectedly resolved");
 159         }
 160     }
 161 
 162     private static class TestCase {
 163         public final Class<?> receiver;
 164         public final Class<?> holder;
 165         public final Class<?> caller;
 166         public final String methodName;
 167         public final boolean isPositive;
 168 
 169         public TestCase(Class<?> recv, Class<?> holder, String methodName,
 170                 Class<?> caller, boolean isPositive) {
 171             this.receiver = recv;
 172             this.holder = holder;
 173             this.caller = caller;
 174             this.methodName = methodName;
 175             this.isPositive = isPositive;
 176         }
 177 
 178         @Override
 179         public String toString() {
 180             return String.format("CASE: receiver=%s, holder=%s, method=%s,"
 181                 + "caller=%s, isPositive=%s%n", receiver.getName(),
 182                 holder.getName(), methodName, caller.getName(), isPositive);
 183         }
 184     }
 185 }