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.arch == "x64" | vm.arch == "sparcv9" | vm.arch == "arm64")
  28  * @library / /testlibrary /test/lib
  29  * @library ../common/patches
  30  * @modules java.base/jdk.internal.misc
  31  * @modules jdk.vm.ci/jdk.vm.ci.hotspot
  32  * @build jdk.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper
  33  * @build compiler.jvmci.compilerToVM.GetClassInitializerTest
  34  * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI
  35  *                   compiler.jvmci.compilerToVM.GetClassInitializerTest
  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.MultipleImplementersInterfaceExtender;
  44 import compiler.jvmci.common.testcases.SingleImplementer;
  45 import compiler.jvmci.common.testcases.SingleImplementerInterface;
  46 import java.util.HashSet;
  47 import java.util.Set;
  48 import jdk.vm.ci.hotspot.CompilerToVMHelper;
  49 import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod;
  50 import jdk.vm.ci.hotspot.HotSpotResolvedObjectType;
  51 import jdk.test.lib.Asserts;
  52 import jdk.test.lib.Utils;
  53 
  54 public class GetClassInitializerTest {
  55 
  56     public static void main(String args[]) {
  57         GetClassInitializerTest test = new GetClassInitializerTest();
  58         for (TestCase tcase : createTestCases()) {
  59             test.runTest(tcase);
  60         }
  61     }
  62 
  63     private static Set<TestCase> createTestCases() {
  64         Set<TestCase> result = new HashSet<>();
  65         // a simple class with initializer
  66         result.add(new TestCase(SingleImplementer.class, true));
  67         // an interface with initializer
  68         result.add(new TestCase(SingleImplementerInterface.class, true));
  69         // an abstract class with initializer
  70         result.add(new TestCase(AbstractClass.class, true));
  71         // a class without initializer, extending class with initializer
  72         result.add(new TestCase(AbstractClassExtender.class, false));
  73         // an interface without initializer
  74         result.add(new TestCase(MultipleImplementersInterfaceExtender.class, false));
  75         // a class without initializer
  76         result.add(new TestCase(DoNotExtendClass.class, false));
  77         return result;
  78     }
  79 
  80     private void runTest(TestCase tcase) {
  81         System.out.println(tcase);
  82         String className = tcase.holder.getName();
  83         HotSpotResolvedObjectType resolvedClazz = CompilerToVMHelper
  84                 .lookupType(Utils.toJVMTypeSignature(tcase.holder),
  85                         getClass(), /* resolve = */ true);
  86         HotSpotResolvedJavaMethod initializer = CompilerToVMHelper
  87                 .getClassInitializer(resolvedClazz);
  88         if (tcase.isPositive) {
  89             Asserts.assertNotNull(initializer, "Couldn't get initializer for "
  90                     + className);
  91             Asserts.assertEQ(initializer.getName(), "<clinit>",
  92                     "Unexpected initializer name for " + className);
  93         } else {
  94             Asserts.assertNull(initializer, "Unexpected: found initializer for "
  95                     + className);
  96         }
  97     }
  98 
  99     private static class TestCase {
 100         public final Class<?> holder;
 101         public final boolean isPositive;
 102 
 103         public TestCase(Class<?> clazz, boolean isPositive) {
 104             this.holder = clazz;
 105             this.isPositive = isPositive;
 106         }
 107 
 108         @Override
 109         public String toString() {
 110             return "CASE: clazz=" + holder.getName()
 111                     + ", isPositive=" + isPositive;
 112         }
 113     }
 114 }