8136421: JEP 243: Java-Level JVM Compiler Interface

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

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

@@ -0,0 +1,116 @@
+/*
+ * 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 /
+ * @clean compiler.jvmci.compilerToVM.*
+ * @compile -g DummyInterface.java
+ * @compile -g DummyAbstractClass.java
+ * @compile -g DummyClass.java
+ * @compile ../common/CompilerToVMHelper.java
+ * @run main ClassFileInstaller jdk.vm.ci.hotspot.CompilerToVMHelper
+ * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI
+ *      -Xbootclasspath/a:.
+ *      compiler.jvmci.compilerToVM.GetLocalVariableTableTest
+ * @clean compiler.jvmci.compilerToVM.*
+ */
+
+package compiler.jvmci.compilerToVM;
+
+import compiler.jvmci.common.CTVMUtilities;
+import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethodImpl;
+import jdk.vm.ci.hotspot.CompilerToVMHelper;
+import jdk.test.lib.Asserts;
+
+import java.lang.reflect.Executable;
+import java.util.HashMap;
+import java.util.Map;
+
+public class GetLocalVariableTableTest {
+
+    public static final int MAIN_LOCALS_COUNT = 0;
+    public static final int INSTANCE_LOCALS_COUNT = 4;
+    public static final int EMPTY_INSTANCE_COUNT = 1;
+    public static final int EMPTY_STATIC_COUNT = 0;
+    public static final int ABSTRACT_INHERIT_LOCALS_COUNT = 2;
+    public static final int DEFAULTFUNC_LOCALS_COUNT = 4;
+
+    public static void main(String[] args) {
+        Map<Executable, Integer> testCases = createTestCases();
+        testCases.forEach(GetLocalVariableTableTest::runSanityTest);
+    }
+
+    private static Map<Executable, Integer> createTestCases() {
+        HashMap<Executable, Integer> methods = new HashMap<>();
+        try {
+            Class<?> aClass;
+
+            aClass = GetLocalVariableTableTest.class;
+            methods.put(aClass.getDeclaredMethod("main", String[].class),
+                    MAIN_LOCALS_COUNT);
+
+            aClass = DummyClass.class;
+            methods.put(aClass.getMethod("dummyInstanceFunction"),
+                    INSTANCE_LOCALS_COUNT);
+            methods.put(aClass.getMethod("dummyEmptyInstanceFunction"),
+                    EMPTY_INSTANCE_COUNT);
+            methods.put(aClass.getMethod("dummyEmptyStaticFunction"),
+                    EMPTY_STATIC_COUNT);
+            methods.put(aClass.getMethod("dummyFunction"),
+                    EMPTY_INSTANCE_COUNT);
+            methods.put(aClass.getMethod("dummyAbstractFunction"),
+                    ABSTRACT_INHERIT_LOCALS_COUNT);
+
+            aClass = DummyInterface.class;
+            methods.put(aClass.getMethod("dummyFunction"), EMPTY_STATIC_COUNT);
+            methods.put(aClass.getMethod("dummyDefaultFunction", int.class,
+                    int.class), DEFAULTFUNC_LOCALS_COUNT);
+
+            aClass = DummyAbstractClass.class;
+            methods.put(aClass.getMethod("dummyAbstractFunction"), 0);
+        } catch (NoSuchMethodException e) {
+            throw new Error("TEST BUG", e);
+        }
+        return methods;
+    }
+
+    private static void runSanityTest(Executable aMethod,
+                                      Integer expectedTableLength) {
+        HotSpotResolvedJavaMethodImpl method = CTVMUtilities
+                .getResolvedMethod(aMethod);
+
+        int tblLength = CompilerToVMHelper.getLocalVariableTableLength(method);
+        Asserts.assertEQ(tblLength, expectedTableLength, aMethod + " : incorrect "
+                + "local variable table length.");
+
+        long tblStart = CompilerToVMHelper.getLocalVariableTableStart(method);
+        if (tblLength > 0) {
+            Asserts.assertNE(tblStart, 0L, aMethod + " : local variable table starts"
+                    + " at 0 with length " + tblLength);
+        }
+    }
+}