8136421: JEP 243: Java-Level JVM Compiler Interface

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

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

@@ -0,0 +1,189 @@
+/*
+ * 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.GetResolvedJavaMethodTest
+ * @run main ClassFileInstaller
+ *      sun.hotspot.WhiteBox
+ *      sun.hotspot.WhiteBox$WhiteBoxPermission
+ *      jdk.vm.ci.hotspot.CompilerToVMHelper
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockExperimentalVMOptions
+ *      -XX:+EnableJVMCI -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
+ *      compiler.jvmci.compilerToVM.GetResolvedJavaMethodTest
+ */
+
+package compiler.jvmci.compilerToVM;
+
+import jdk.vm.ci.hotspot.CompilerToVMHelper;
+import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethodImpl;
+import jdk.vm.ci.hotspot.MetaspaceWrapperObject;
+import jdk.test.lib.Asserts;
+import jdk.test.lib.Utils;
+import sun.hotspot.WhiteBox;
+import sun.misc.Unsafe;
+
+import java.lang.reflect.Field;
+
+public class GetResolvedJavaMethodTest {
+    private static enum TestCase {
+        NULL_BASE {
+            @Override
+            HotSpotResolvedJavaMethodImpl getResolvedJavaMethod() {
+                return CompilerToVMHelper.getResolvedJavaMethod(
+                        null, getPtrToMethod());
+            }
+        },
+        JAVA_METHOD_BASE {
+            @Override
+            HotSpotResolvedJavaMethodImpl getResolvedJavaMethod() {
+                HotSpotResolvedJavaMethodImpl methodInstance
+                        = CompilerToVMHelper.getResolvedJavaMethodAtSlot(
+                       TEST_CLASS, 0);
+                Field field;
+                try {
+                    field = HotSpotResolvedJavaMethodImpl
+                            .class.getDeclaredField("metaspaceMethod");
+                    field.setAccessible(true);
+                    field.set(methodInstance, getPtrToMethod());
+                } catch (ReflectiveOperationException e) {
+                    throw new Error("TEST BUG : " + e, e);
+                }
+                return CompilerToVMHelper.getResolvedJavaMethod(
+                        methodInstance, 0L);
+            }
+        },
+        JAVA_METHOD_BASE_IN_TWO {
+            @Override
+            HotSpotResolvedJavaMethodImpl getResolvedJavaMethod() {
+                long ptr = getPtrToMethod();
+                HotSpotResolvedJavaMethodImpl methodInstance
+                        = CompilerToVMHelper.getResolvedJavaMethodAtSlot(
+                        TEST_CLASS, 0);
+                Field field;
+                try {
+                    field = HotSpotResolvedJavaMethodImpl
+                            .class.getDeclaredField("metaspaceMethod");
+                    field.setAccessible(true);
+                    field.set(methodInstance, ptr / 2L);
+                } catch (ReflectiveOperationException e) {
+                    throw new Error("TESTBUG : " + e.getMessage(), e);
+                }
+                return CompilerToVMHelper.getResolvedJavaMethod(methodInstance,
+                        ptr - ptr / 2L);
+            }
+        },
+        JAVA_METHOD_BASE_ZERO {
+            @Override
+            HotSpotResolvedJavaMethodImpl getResolvedJavaMethod() {
+                long ptr = getPtrToMethod();
+                HotSpotResolvedJavaMethodImpl methodInstance
+                        = CompilerToVMHelper.getResolvedJavaMethodAtSlot(
+                        TEST_CLASS, 0);
+                Field field;
+                try {
+                    field = HotSpotResolvedJavaMethodImpl
+                            .class.getDeclaredField("metaspaceMethod");
+                    field.setAccessible(true);
+                    field.set(methodInstance, 0L);
+                } catch (ReflectiveOperationException e) {
+                    throw new Error("TESTBUG : " + e.getMessage(), e);
+                }
+                return CompilerToVMHelper.getResolvedJavaMethod(methodInstance,
+                        ptr);
+            }
+        }
+        ;
+        abstract HotSpotResolvedJavaMethodImpl getResolvedJavaMethod();
+    }
+
+    private static final Unsafe UNSAFE = Utils.getUnsafe();
+    private static final WhiteBox WB = WhiteBox.getWhiteBox();
+    private static final Class<?> TEST_CLASS = GetResolvedJavaMethodTest.class;
+    private static final long PTR;
+    static  {
+        HotSpotResolvedJavaMethodImpl method
+                = CompilerToVMHelper.getResolvedJavaMethodAtSlot(TEST_CLASS, 0);
+        PTR = method.getMetaspacePointer();
+    }
+
+    private static long getPtrToMethod() {
+        Field field;
+        try {
+            field = TEST_CLASS.getDeclaredField("PTR");
+        } catch (NoSuchFieldException e) {
+            throw new Error("TEST BUG : " + e, e);
+        }
+        Object base = UNSAFE.staticFieldBase(field);
+        return WB.getObjectAddress(base) + UNSAFE.staticFieldOffset(field);
+    }
+
+    public void test(TestCase testCase) {
+        System.out.println(testCase.name());
+        HotSpotResolvedJavaMethodImpl result = testCase.getResolvedJavaMethod();
+        Asserts.assertNotNull(result, testCase + " : got null");
+        Asserts.assertEQ(result.getDeclaringClass().mirror(), TEST_CLASS,
+                testCase + " : returned method has unexpected declaring class");
+    }
+
+    public static void main(String[] args) {
+        GetResolvedJavaMethodTest test = new GetResolvedJavaMethodTest();
+        for (TestCase testCase : TestCase.values()) {
+            test.test(testCase);
+        }
+        testObjectBase();
+        testMetaspaceWrapperBase();
+    }
+
+    private static void testMetaspaceWrapperBase() {
+        try {
+            HotSpotResolvedJavaMethodImpl method
+                    = CompilerToVMHelper.getResolvedJavaMethod(
+                            new MetaspaceWrapperObject() {
+                                @Override
+                                public long getMetaspacePointer() {
+                                    return getPtrToMethod();
+                                }
+                            }, 0L);
+            throw new AssertionError("Test METASPACE_WRAPPER_BASE."
+                    + " Expected IllegalArgumentException has not been caught");
+        } catch (IllegalArgumentException iae) {
+            // expected
+        }
+    }
+
+    private static void testObjectBase() {
+        try {
+            HotSpotResolvedJavaMethodImpl method
+                    = CompilerToVMHelper.getResolvedJavaMethod(new Object(), 0L);
+            throw new AssertionError("Test OBJECT_BASE."
+                + " Expected IllegalArgumentException has not been caught");
+        } catch (IllegalArgumentException iae) {
+            // expected
+        }
+    }
+}