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 jdk.internal.vm.ci/jdk.vm.ci.hotspot 32 * @build jdk.internal.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper 33 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI 34 * -Djvmci.Compiler=null 35 * compiler.jvmci.compilerToVM.GetImplementorTest 36 */ 37 38 package compiler.jvmci.compilerToVM; 39 40 import compiler.jvmci.common.testcases.AbstractClass; 41 import compiler.jvmci.common.testcases.AbstractClassExtender; 42 import compiler.jvmci.common.testcases.DoNotExtendClass; 43 import compiler.jvmci.common.testcases.DoNotImplementInterface; 44 import compiler.jvmci.common.testcases.MultipleImplementer1; 45 import compiler.jvmci.common.testcases.MultipleImplementer2; 46 import compiler.jvmci.common.testcases.MultipleImplementersInterface; 47 import compiler.jvmci.common.testcases.SingleImplementer; 48 import compiler.jvmci.common.testcases.SingleImplementerInterface; 49 import compiler.jvmci.common.testcases.SingleSubclass; 50 import compiler.jvmci.common.testcases.SingleSubclassedClass; 51 import jdk.test.lib.Asserts; 52 import jdk.test.lib.Utils; 53 import jdk.vm.ci.hotspot.CompilerToVMHelper; 54 import jdk.vm.ci.hotspot.HotSpotResolvedObjectType; 55 56 import java.util.HashSet; 57 import java.util.Set; 58 import java.util.stream.Stream; 59 60 public class GetImplementorTest { 61 public static void main(String args[]) { 62 GetImplementorTest test = new GetImplementorTest(); 63 for (TestCase tcase : createTestCases()) { 64 test.runTest(tcase); 65 } 66 } 67 68 private static Set<TestCase> createTestCases() { 69 Set<TestCase> result = new HashSet<>(); 70 Stream.of( 71 SingleSubclass.class, 72 AbstractClassExtender.class, 73 MultipleImplementer2.class, 74 MultipleImplementer1.class, 75 MultipleImplementersInterface.class, 76 DoNotImplementInterface.class, 77 DoNotExtendClass.class, 78 AbstractClass.class, 79 SingleSubclassedClass.class) 80 .forEach(Utils::ensureClassIsLoaded); 81 // an interface with single class implementing it 82 result.add(new TestCase(SingleImplementerInterface.class, 83 SingleImplementer.class)); 84 /* an interface with multiple implementers. According to getImplementor 85 javadoc, an itself should be returned in case of more than one 86 implementor 87 */ 88 result.add(new TestCase(MultipleImplementersInterface.class, 89 MultipleImplementersInterface.class)); 90 // an interface with no implementors 91 result.add(new TestCase(DoNotImplementInterface.class, null)); 92 // an abstract class with extender class 93 result.add(new TestCase(AbstractClass.class, null)); 94 // a simple class, which is not extended 95 result.add(new TestCase(DoNotExtendClass.class, null)); 96 // a usual class, which is extended 97 result.add(new TestCase(SingleSubclassedClass.class, null)); 98 return result; 99 } 100 101 private void runTest(TestCase tcase) { 102 System.out.println(tcase); 103 HotSpotResolvedObjectType resolvedIface = CompilerToVMHelper 104 .lookupType(Utils.toJVMTypeSignature(tcase.anInterface), 105 getClass(), /* resolve = */ true); 106 HotSpotResolvedObjectType resolvedImplementer = CompilerToVMHelper 107 .getImplementor(resolvedIface); 108 HotSpotResolvedObjectType resolvedExpected = null; 109 if (tcase.expectedImplementer != null) { 110 resolvedExpected = CompilerToVMHelper.lookupType(Utils 111 .toJVMTypeSignature(tcase.expectedImplementer), 112 getClass(), /* resolve = */ true); 113 } 114 Asserts.assertEQ(resolvedImplementer, resolvedExpected, 115 "Unexpected implementer for " + tcase.anInterface.getName()); 116 } 117 118 private static class TestCase { 119 public final Class<?> anInterface; 120 public final Class<?> expectedImplementer; 121 122 public TestCase(Class<?> iface, Class<?> expectedImplementer) { 123 this.anInterface = iface; 124 this.expectedImplementer = expectedImplementer; 125 } 126 127 @Override 128 public String toString() { 129 return String.format("CASE: interface=%s, expected=%s", 130 anInterface.getName(), 131 expectedImplementer == null 132 ? null 133 : expectedImplementer.getName()); 134 } 135 } 136 }