1 /*
   2  * Copyright (c) 2015, 2019, 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.jvmci
  28  * @library / /test/lib
  29  * @library ../common/patches
  30  * @ignore Not supported JVMCI API
  31  * @modules java.base/jdk.internal.misc:+open
  32  * @modules jdk.internal.vm.ci/jdk.vm.ci.hotspot:+open
  33  *
  34  * @build jdk.internal.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper
  35  *        jdk.internal.vm.ci/jdk.vm.ci.hotspot.PublicMetaspaceWrapperObject
  36  *        sun.hotspot.WhiteBox
  37  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  38  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  39  * @run main/othervm -Xbootclasspath/a:.
  40  *                   -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
  41  *                   -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI
  42  *                   -Djvmci.Compiler=null
  43  *                   compiler.jvmci.compilerToVM.GetResolvedJavaMethodTest
  44  */
  45 
  46 package compiler.jvmci.compilerToVM;
  47 
  48 import jdk.internal.misc.Unsafe;
  49 import jdk.test.lib.Asserts;
  50 import jdk.vm.ci.hotspot.CompilerToVMHelper;
  51 import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod;
  52 import jdk.vm.ci.hotspot.PublicMetaspaceWrapperObject;
  53 import sun.hotspot.WhiteBox;
  54 
  55 import java.lang.reflect.Field;
  56 import java.lang.reflect.Method;
  57 
  58 public class GetResolvedJavaMethodTest {
  59     private static enum TestCase {
  60         NULL_BASE {
  61             @Override
  62             HotSpotResolvedJavaMethod getResolvedJavaMethod() {
  63                 return CompilerToVMHelper.getResolvedJavaMethod(
  64                         null, getPtrToMethod());
  65             }
  66         },
  67         JAVA_METHOD_BASE {
  68             @Override
  69             HotSpotResolvedJavaMethod getResolvedJavaMethod() {
  70                 HotSpotResolvedJavaMethod methodInstance = TEST_METHOD;
  71                 try {
  72                     METASPACE_METHOD_FIELD.set(methodInstance,
  73                             getPtrToMethod());
  74                 } catch (ReflectiveOperationException e) {
  75                     throw new Error("TEST BUG : " + e, e);
  76                 }
  77                 return CompilerToVMHelper.getResolvedJavaMethod(
  78                         methodInstance, 0L);
  79             }
  80         },
  81         JAVA_METHOD_BASE_IN_TWO {
  82             @Override
  83             HotSpotResolvedJavaMethod getResolvedJavaMethod() {
  84                 long ptr = getPtrToMethod();
  85                 HotSpotResolvedJavaMethod methodInstance = TEST_METHOD;
  86                 try {
  87                     METASPACE_METHOD_FIELD.set(methodInstance, ptr / 2L);
  88                 } catch (ReflectiveOperationException e) {
  89                     throw new Error("TESTBUG : " + e, e);
  90                 }
  91                 return CompilerToVMHelper.getResolvedJavaMethod(methodInstance,
  92                         ptr - ptr / 2L);
  93             }
  94         },
  95         JAVA_METHOD_BASE_ZERO {
  96             @Override
  97             HotSpotResolvedJavaMethod getResolvedJavaMethod() {
  98                 long ptr = getPtrToMethod();
  99                 HotSpotResolvedJavaMethod methodInstance = TEST_METHOD;
 100                 try {
 101                     METASPACE_METHOD_FIELD.set(methodInstance, 0L);
 102                 } catch (ReflectiveOperationException e) {
 103                     throw new Error("TESTBUG : " + e, e);
 104                 }
 105                 return CompilerToVMHelper.getResolvedJavaMethod(methodInstance,
 106                         ptr);
 107             }
 108         }
 109         ;
 110         abstract HotSpotResolvedJavaMethod getResolvedJavaMethod();
 111     }
 112 
 113     private static final Unsafe UNSAFE = Unsafe.getUnsafe();
 114     private static final WhiteBox WB = WhiteBox.getWhiteBox();
 115     private static final Field METASPACE_METHOD_FIELD;
 116     private static final Class<?> TEST_CLASS = GetResolvedJavaMethodTest.class;
 117     private static final HotSpotResolvedJavaMethod TEST_METHOD;
 118     private static final long PTR;
 119     static  {
 120         try {
 121             Method method = TEST_CLASS.getDeclaredMethod("test", TestCase.class);
 122             TEST_METHOD = CompilerToVMHelper.asResolvedJavaMethod(method);
 123         } catch (NoSuchMethodException e) {
 124             throw new Error("TESTBUG : " + e, e);
 125         }
 126         try {
 127             // jdk.vm.ci.hotspot.HotSpotResolvedJavaMethodImpl.metaspaceMethod
 128             METASPACE_METHOD_FIELD = TEST_METHOD.getClass()
 129                     .getDeclaredField("metaspaceMethod");
 130             METASPACE_METHOD_FIELD.setAccessible(true);
 131             PTR = (long) METASPACE_METHOD_FIELD.get(TEST_METHOD);
 132         } catch (ReflectiveOperationException e) {
 133             throw new Error("TESTBUG : " + e, e);
 134         }
 135 
 136     }
 137 
 138     private static long getPtrToMethod() {
 139         Field field;
 140         try {
 141             field = TEST_CLASS.getDeclaredField("PTR");
 142         } catch (NoSuchFieldException e) {
 143             throw new Error("TEST BUG : " + e, e);
 144         }
 145         Object base = UNSAFE.staticFieldBase(field);
 146         return WB.getObjectAddress(base) + UNSAFE.staticFieldOffset(field);
 147     }
 148 
 149     public void test(TestCase testCase) {
 150         System.out.println(testCase.name());
 151         HotSpotResolvedJavaMethod result = testCase.getResolvedJavaMethod();
 152         Asserts.assertNotNull(result, testCase + " : got null");
 153         Asserts.assertEQ(TEST_CLASS,
 154                 CompilerToVMHelper.getMirror(result.getDeclaringClass()),
 155                 testCase + " : unexpected declaring class");
 156     }
 157 
 158     public static void main(String[] args) {
 159         GetResolvedJavaMethodTest test = new GetResolvedJavaMethodTest();
 160         for (TestCase testCase : TestCase.values()) {
 161             test.test(testCase);
 162         }
 163         testObjectBase();
 164         testMetaspaceWrapperBase();
 165     }
 166 
 167     private static void testMetaspaceWrapperBase() {
 168         try {
 169             HotSpotResolvedJavaMethod method
 170                     = CompilerToVMHelper.getResolvedJavaMethod(
 171                             new PublicMetaspaceWrapperObject() {
 172                                 @Override
 173                                 public long getMetaspacePointer() {
 174                                     return getPtrToMethod();
 175                                 }
 176                             }, 0L);
 177             throw new AssertionError("Test METASPACE_WRAPPER_BASE."
 178                     + " Expected IllegalArgumentException has not been caught");
 179         } catch (IllegalArgumentException e) {
 180             // expected
 181         }
 182     }
 183 
 184     private static void testObjectBase() {
 185         try {
 186             HotSpotResolvedJavaMethod method
 187                     = CompilerToVMHelper.getResolvedJavaMethod(new Object(), 0L);
 188             throw new AssertionError("Test OBJECT_BASE."
 189                 + " Expected IllegalArgumentException has not been caught");
 190         } catch (IllegalArgumentException e) {
 191             // expected
 192         }
 193     }
 194 }