| /* |
| * Copyright (c) 2015, 2016, 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 vm.jvmci |
| * @library / /test/lib |
| * @library ../common/patches |
| * @modules java.base/jdk.internal.misc |
| * @modules jdk.internal.vm.ci/jdk.vm.ci.hotspot |
| * jdk.internal.vm.ci/jdk.vm.ci.meta |
| * |
| * @build jdk.internal.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper |
| * jdk.internal.vm.ci/jdk.vm.ci.hotspot.PublicMetaspaceWrapperObject |
| * sun.hotspot.WhiteBox |
| * @run driver ClassFileInstaller sun.hotspot.WhiteBox |
| * sun.hotspot.WhiteBox$WhiteBoxPermission |
| * @run main/othervm -Xbootclasspath/a:. |
| * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI |
| * -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI |
| * -XX:+UseCompressedOops |
| * compiler.jvmci.compilerToVM.GetResolvedJavaTypeTest |
| * @run main/othervm -Xbootclasspath/a:. |
| * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI |
| * -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI |
| * -XX:-UseCompressedOops -Djvmci.Compiler=null |
| * compiler.jvmci.compilerToVM.GetResolvedJavaTypeTest |
| */ |
| |
| package compiler.jvmci.compilerToVM; |
| |
| import jdk.internal.misc.Unsafe; |
| import jdk.test.lib.Asserts; |
| import jdk.vm.ci.hotspot.CompilerToVMHelper; |
| import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod; |
| import jdk.vm.ci.hotspot.HotSpotResolvedObjectType; |
| import jdk.vm.ci.hotspot.PublicMetaspaceWrapperObject; |
| import jdk.vm.ci.meta.ConstantPool; |
| import sun.hotspot.WhiteBox; |
| |
| import java.lang.reflect.Field; |
| |
| public class GetResolvedJavaTypeTest { |
| private static enum TestCase { |
| NULL_BASE { |
| @Override |
| HotSpotResolvedObjectType getResolvedJavaType() { |
| return CompilerToVMHelper.getResolvedJavaType( |
| null, getPtrToKlass(), COMPRESSED); |
| } |
| }, |
| JAVA_METHOD_BASE { |
| @Override |
| HotSpotResolvedObjectType getResolvedJavaType() { |
| HotSpotResolvedJavaMethod methodInstance |
| = CompilerToVMHelper.getResolvedJavaMethodAtSlot( |
| TEST_CLASS, 0); |
| Field field; |
| try { |
| // jdk.vm.ci.hotspot.HotSpotResolvedJavaMethodImpl.metaspaceMethod |
| field = methodInstance.getClass() |
| .getDeclaredField("metaspaceMethod"); |
| field.setAccessible(true); |
| field.set(methodInstance, getPtrToKlass()); |
| } catch (ReflectiveOperationException e) { |
| throw new Error("TEST BUG : " + e, e); |
| } |
| |
| return CompilerToVMHelper.getResolvedJavaType(methodInstance, |
| 0L, COMPRESSED); |
| } |
| }, |
| CONSTANT_POOL_BASE { |
| @Override |
| HotSpotResolvedObjectType getResolvedJavaType() { |
| ConstantPool cpInst; |
| try { |
| cpInst = CompilerToVMHelper.getConstantPool(null, |
| getPtrToKlass()); |
| // jdk.vm.ci.hotspot.HotSpotConstantPool.metaspaceConstantPool |
| Field field = cpInst.getClass() |
| .getDeclaredField("metaspaceConstantPool"); |
| field.setAccessible(true); |
| field.set(cpInst, getPtrToKlass()); |
| } catch (ReflectiveOperationException e) { |
| throw new Error("TESTBUG : " + e, e); |
| } |
| return CompilerToVMHelper.getResolvedJavaType(cpInst, |
| 0L, COMPRESSED); |
| } |
| }, |
| CONSTANT_POOL_BASE_IN_TWO { |
| @Override |
| HotSpotResolvedObjectType getResolvedJavaType() { |
| long ptr = getPtrToKlass(); |
| ConstantPool cpInst = HotSpotResolvedObjectType |
| .fromObjectClass(TEST_CLASS) |
| .getConstantPool(); |
| try { |
| Field field = cpInst.getClass() |
| .getDeclaredField("metaspaceConstantPool"); |
| field.setAccessible(true); |
| field.set(cpInst, ptr / 2L); |
| } catch (ReflectiveOperationException e) { |
| throw new Error("TESTBUG : " + e, e); |
| } |
| return CompilerToVMHelper.getResolvedJavaType(cpInst, |
| ptr - ptr / 2L, COMPRESSED); |
| } |
| }, |
| CONSTANT_POOL_BASE_ZERO { |
| @Override |
| HotSpotResolvedObjectType getResolvedJavaType() { |
| long ptr = getPtrToKlass(); |
| ConstantPool cpInst = HotSpotResolvedObjectType |
| .fromObjectClass(TEST_CLASS) |
| .getConstantPool(); |
| try { |
| Field field = cpInst.getClass() |
| .getDeclaredField("metaspaceConstantPool"); |
| field.setAccessible(true); |
| field.set(cpInst, 0L); |
| } catch (ReflectiveOperationException e) { |
| throw new Error("TESTBUG : " + e, e); |
| } |
| return CompilerToVMHelper.getResolvedJavaType(cpInst, |
| ptr, COMPRESSED); |
| } |
| }, |
| ; |
| abstract HotSpotResolvedObjectType getResolvedJavaType(); |
| } |
| |
| private static final Unsafe UNSAFE = Unsafe.getUnsafe(); |
| private static final WhiteBox WB = WhiteBox.getWhiteBox(); |
| private static final Class TEST_CLASS = GetResolvedJavaTypeTest.class; |
| /* a compressed parameter for tested method is set to false because |
| unsafe.getKlassPointer always returns uncompressed pointer */ |
| private static final boolean COMPRESSED = false; |
| // = WB.getBooleanVMFlag("UseCompressedClassPointers"); |
| |
| private static long getPtrToKlass() { |
| 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()); |
| HotSpotResolvedObjectType type = testCase.getResolvedJavaType(); |
| Asserts.assertEQ(TEST_CLASS, |
| CompilerToVMHelper.getMirror(type), |
| testCase + " : unexpected class returned"); |
| } |
| |
| public static void main(String[] args) { |
| GetResolvedJavaTypeTest test = new GetResolvedJavaTypeTest(); |
| for (TestCase testCase : TestCase.values()) { |
| test.test(testCase); |
| } |
| testObjectBase(); |
| testMetaspaceWrapperBase(); |
| } |
| |
| private static void testMetaspaceWrapperBase() { |
| try { |
| HotSpotResolvedObjectType type |
| = CompilerToVMHelper.getResolvedJavaType( |
| new PublicMetaspaceWrapperObject() { |
| @Override |
| public long getMetaspacePointer() { |
| return getPtrToKlass(); |
| } |
| }, 0L, COMPRESSED); |
| throw new AssertionError("Test METASPACE_WRAPPER_BASE." |
| + " Expected IllegalArgumentException has not been caught"); |
| } catch (IllegalArgumentException iae) { |
| // expected |
| } |
| } |
| |
| private static void testObjectBase() { |
| try { |
| HotSpotResolvedObjectType type |
| = CompilerToVMHelper.getResolvedJavaType(new Object(), 0L, |
| COMPRESSED); |
| throw new AssertionError("Test OBJECT_BASE." |
| + " Expected IllegalArgumentException has not been caught"); |
| } catch (IllegalArgumentException iae) { |
| // expected |
| } |
| } |
| } |