8136421: JEP 243: Java-Level JVM Compiler Interface

Reviewed-by: ihse, alanb, roland, coleenp, iveresov, kvn, kbarrett

hotspot/test/compiler/jvmci/compilerToVM/GetVtableIndexForInterfaceTest.java

@@ -0,0 +1,191 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8136421
+ * @requires (os.simpleArch == "x64" | os.simpleArch == "sparcv9") & os.arch != "aarch64"
+ * @library / /testlibrary /../../test/lib
+ * @compile ../common/CompilerToVMHelper.java
+ * @build compiler.jvmci.compilerToVM.GetVtableIndexForInterfaceTest
+ * @run main ClassFileInstaller
+ *     jdk.vm.ci.hotspot.CompilerToVMHelper
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockExperimentalVMOptions
+ *     -XX:+EnableJVMCI compiler.jvmci.compilerToVM.GetVtableIndexForInterfaceTest
+ */
+
+package compiler.jvmci.compilerToVM;
+
+import compiler.jvmci.common.testcases.AbstractClass;
+import compiler.jvmci.common.testcases.DoNotExtendClass;
+import compiler.jvmci.common.testcases.MultipleAbstractImplementer;
+import compiler.jvmci.common.testcases.MultipleImplementersInterface;
+import compiler.jvmci.common.testcases.MultipleImplementersInterfaceExtender;
+import compiler.jvmci.common.testcases.SingleImplementer;
+import compiler.jvmci.common.testcases.SingleImplementerInterface;
+import compiler.jvmci.common.testcases.SingleSubclass;
+import compiler.jvmci.common.testcases.SingleSubclassedClass;
+import compiler.jvmci.common.CTVMUtilities;
+import compiler.jvmci.common.testcases.AnotherSingleImplementer;
+import compiler.jvmci.common.testcases.AnotherSingleImplementerInterface;
+import java.lang.reflect.Method;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.stream.Stream;
+import jdk.vm.ci.hotspot.CompilerToVMHelper;
+import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethodImpl;
+import jdk.vm.ci.hotspot.HotSpotResolvedObjectTypeImpl;
+import jdk.test.lib.Asserts;
+import jdk.test.lib.Utils;
+
+public class GetVtableIndexForInterfaceTest {
+    private static final int INVALID_VTABLE_INDEX = -4; // see method.hpp: VtableIndexFlag
+
+    public static void main(String args[]) {
+        GetVtableIndexForInterfaceTest test
+                = new GetVtableIndexForInterfaceTest();
+        try {
+            for (TestCase tcase : createTestCases()) {
+                test.runTest(tcase);
+            }
+        } catch (NoSuchMethodException e) {
+            throw new Error("TEST BUG: can't find requested method", e);
+        }
+    }
+
+    private static Set<TestCase> createTestCases() {
+        Set<TestCase> result = new HashSet<>();
+        Stream.of(
+                    AbstractClass.class,
+                    SingleImplementer.class,
+                    SingleImplementerInterface.class,
+                    MultipleImplementersInterface.class,
+                    MultipleImplementersInterfaceExtender.class,
+                    SingleSubclass.class,
+                    SingleSubclassedClass.class,
+                    DoNotExtendClass.class,
+                    MultipleAbstractImplementer.class
+                )
+                .forEach(Utils::ensureClassIsLoaded);
+        // non iface method
+        result.add(new TestCase(SingleImplementer.class,
+                SingleImplementer.class, "nonInterfaceMethod",
+                false, InternalError.class));
+        // iface method w/o default implementation
+        result.add(new TestCase(SingleImplementer.class,
+                SingleImplementerInterface.class, "interfaceMethod", false));
+        /* another iface which provides default implementation for the
+           original iface*/
+        result.add(new TestCase(MultipleImplementersInterfaceExtender.class,
+                MultipleImplementersInterface.class, "testMethod", false,
+                InternalError.class));
+        // iface method w/ default implementation
+        result.add(new TestCase(SingleImplementer.class,
+                SingleImplementerInterface.class, "defaultMethod", true));
+        // non iface class
+        result.add(new TestCase(SingleSubclass.class,
+                SingleSubclassedClass.class, "inheritedMethod", false,
+                InternalError.class));
+        // class not implementing iface
+        result.add(new TestCase(DoNotExtendClass.class,
+                SingleImplementerInterface.class, "defaultMethod", false));
+        // abstract class which doesn't implement iface
+        result.add(new TestCase(AbstractClass.class,
+                SingleImplementerInterface.class, "defaultMethod", false));
+        // abstract class which implements iface
+        result.add(new TestCase(MultipleAbstractImplementer.class,
+                MultipleImplementersInterface.class, "defaultMethod", true));
+        // class not initialized
+        result.add(new TestCase(AnotherSingleImplementer.class,
+                AnotherSingleImplementerInterface.class, "defaultMethod",
+                false, InternalError.class));
+        return result;
+    }
+
+    private void runTest(TestCase tcase) throws NoSuchMethodException {
+        System.out.println(tcase);
+        Method method = tcase.holder.getDeclaredMethod(tcase.methodName);
+        HotSpotResolvedObjectTypeImpl metaspaceKlass = CompilerToVMHelper
+                .lookupType(Utils.toJVMTypeSignature(tcase.receiver),
+                        getClass(), /* resolve = */ true);
+        HotSpotResolvedJavaMethodImpl metaspaceMethod = CTVMUtilities
+                .getResolvedMethod(tcase.holder, method);
+        int index = 0;
+        try {
+            index = CompilerToVMHelper
+                    .getVtableIndexForInterfaceMethod(metaspaceKlass,
+                            metaspaceMethod);
+        } catch (Throwable t) {
+            if (tcase.isPositive || tcase.expectedException == null) {
+                throw new Error("Caught unexpected exception " + t);
+            }
+            if (!tcase.expectedException.equals(t.getClass())) {
+                throw new Error(String.format("Caught %s while expected %s",
+                        t.getClass().getName(),
+                        tcase.expectedException.getName()));
+            }
+            return;
+        }
+        if (tcase.expectedException != null) {
+            throw new AssertionError("Expected exception wasn't caught: "
+                    + tcase.expectedException.getName());
+        }
+        if (tcase.isPositive) {
+            Asserts.assertNE(index, INVALID_VTABLE_INDEX,
+                    "Unexpected: got invalid index");
+        } else {
+            Asserts.assertEQ(index, INVALID_VTABLE_INDEX,
+                    "Unexpected: got valid index ");
+        }
+    }
+
+    private static class TestCase {
+        public final Class<?> receiver;
+        public final Class<?> holder;
+        public final String methodName;
+        public final boolean isPositive;
+        public final Class<? extends Throwable> expectedException;
+
+        public TestCase(Class<?> receiver, Class<?> holder, String methodName,
+                boolean isPositive,
+                Class<? extends Throwable> expectedException) {
+            this.receiver = receiver;
+            this.holder = holder;
+            this.methodName = methodName;
+            this.isPositive = isPositive;
+            this.expectedException = expectedException;
+        }
+
+        public TestCase(Class<?> receiver, Class<?> holder, String methodName,
+                boolean isPositive) {
+            this(receiver, holder, methodName, isPositive, null);
+        }
+
+        @Override
+        public String toString() {
+            return String.format("CASE: receiver=%s, holder=%s, method=%s,"
+                    + " isPositive=%s%n", receiver.getName(), holder.getName(),
+                    methodName, isPositive);
+        }
+    }
+}