1 /*
   2  * Copyright (c) 2016, 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 8138708
  27  * @requires vm.jvmci
  28  * @library /test/lib /
  29  * @library ../common/patches
  30  * @modules java.base/jdk.internal.misc
  31  *          java.base/jdk.internal.reflect
  32  *          java.base/jdk.internal.org.objectweb.asm
  33  *          java.base/jdk.internal.org.objectweb.asm.tree
  34  *          jdk.internal.vm.ci/jdk.vm.ci.hotspot
  35  *          jdk.internal.vm.ci/jdk.vm.ci.meta
  36  *          jdk.internal.vm.ci/jdk.vm.ci.runtime
  37  *
  38  * @build jdk.internal.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper sun.hotspot.WhiteBox
  39  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  40  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  41  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  42  *                   -XX:+WhiteBoxAPI -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI
  43  *                   compiler.jvmci.compilerToVM.ResolveFieldInPoolTest
  44  */
  45 
  46 package compiler.jvmci.compilerToVM;
  47 
  48 import compiler.jvmci.compilerToVM.ConstantPoolTestCase.ConstantTypes;
  49 import compiler.jvmci.compilerToVM.ConstantPoolTestCase.TestedCPEntry;
  50 import compiler.jvmci.compilerToVM.ConstantPoolTestCase.Validator;
  51 import compiler.jvmci.compilerToVM.ConstantPoolTestsHelper.DummyClasses;
  52 import jdk.internal.misc.Unsafe;
  53 import jdk.internal.org.objectweb.asm.Opcodes;
  54 import jdk.test.lib.Asserts;
  55 import jdk.vm.ci.hotspot.CompilerToVMHelper;
  56 import jdk.vm.ci.hotspot.HotSpotResolvedObjectType;
  57 import jdk.vm.ci.meta.ConstantPool;
  58 
  59 import java.lang.reflect.Field;
  60 import java.util.HashMap;
  61 import java.util.Map;
  62 
  63 import static compiler.jvmci.compilerToVM.ConstantPoolTestCase.ConstantTypes.CONSTANT_FIELDREF;
  64 
  65 /**
  66  * Test for {@code jdk.vm.ci.hotspot.CompilerToVM.resolveFieldInPool} method
  67  */
  68 public class ResolveFieldInPoolTest {
  69 
  70     private static final Unsafe UNSAFE = Unsafe.getUnsafe();
  71 
  72     public static void main(String[] args) throws Exception {
  73         Map<ConstantTypes, Validator> typeTests = new HashMap<>();
  74         typeTests.put(CONSTANT_FIELDREF, ResolveFieldInPoolTest::validate);
  75         ConstantPoolTestCase testCase = new ConstantPoolTestCase(typeTests);
  76         testCase.test();
  77         // The next "Class.forName" and repeating "testCase.test()"
  78         // are here for the following reason.
  79         // The first test run is without dummy class initialization,
  80         // which means no constant pool cache exists.
  81         // The second run is with initialized class (with constant pool cache available).
  82         // Some CompilerToVM methods require different input
  83         // depending on whether CP cache exists or not.
  84         for (DummyClasses dummy : DummyClasses.values()) {
  85             Class.forName(dummy.klass.getName());
  86         }
  87         testCase.test();
  88     }
  89 
  90     private static void validate(ConstantPool constantPoolCTVM,
  91                                  ConstantTypes cpType,
  92                                  DummyClasses dummyClass,
  93                                  int cpi) {
  94         TestedCPEntry entry = cpType.getTestedCPEntry(dummyClass, cpi);
  95         if (entry == null) {
  96             return;
  97         }
  98         int index = cpi;
  99         String cached = "";
 100         int cpci = dummyClass.getCPCacheIndex(cpi);
 101         if (cpci != ConstantPoolTestsHelper.NO_CP_CACHE_PRESENT) {
 102             index = cpci;
 103             cached = "cached ";
 104         }
 105         for (int j = 0; j < entry.opcodes.length; j++) {
 106             int[] info = new int[3];
 107             HotSpotResolvedObjectType fieldToVerify
 108                     = CompilerToVMHelper.resolveFieldInPool(constantPoolCTVM,
 109                                                            index,
 110                                                            entry.methods == null ? null : entry.methods[j],
 111                                                            entry.opcodes[j],
 112                                                            info);
 113             String msg = String.format("Object returned by resolveFieldInPool method"
 114                                                + " for %sindex %d  should not be null",
 115                                        cached,
 116                                        index);
 117             Asserts.assertNotNull(fieldToVerify, msg);
 118             String classNameToRefer = entry.klass;
 119             String fieldToVerifyKlassToString = fieldToVerify.klass().toValueString();
 120             if (!fieldToVerifyKlassToString.contains(classNameToRefer)) {
 121                 msg = String.format("String representation \"%s\" of the object"
 122                                             + " returned by resolveFieldInPool method"
 123                                             + " for index %d does not contain a field's class name,"
 124                                             + " should contain %s",
 125                                     fieldToVerifyKlassToString,
 126                                     index,
 127                                     classNameToRefer);
 128                 throw new AssertionError(msg);
 129             }
 130             msg = String.format("Access flags returned by resolveFieldInPool"
 131                                         + " method are wrong for the field %s.%s"
 132                                         + " at %sindex %d",
 133                                 entry.klass,
 134                                 entry.name,
 135                                 cached,
 136                                 index);
 137             Asserts.assertEQ(info[0], entry.accFlags, msg);
 138             if (cpci == -1) {
 139                 return;
 140             }
 141             Class classOfTheField = null;
 142             Field fieldToRefer = null;
 143             try {
 144                 classOfTheField = Class.forName(classNameToRefer.replaceAll("/", "\\."));
 145                 fieldToRefer = classOfTheField.getDeclaredField(entry.name);
 146                 fieldToRefer.setAccessible(true);
 147             } catch (Exception ex) {
 148                 throw new Error("Unexpected exception", ex);
 149             }
 150             int offsetToRefer;
 151             if ((entry.accFlags & Opcodes.ACC_STATIC) != 0) {
 152                 offsetToRefer = (int) UNSAFE.staticFieldOffset(fieldToRefer);
 153             } else {
 154                 offsetToRefer = (int) UNSAFE.objectFieldOffset(fieldToRefer);
 155             }
 156             msg = String.format("Field offset returned by resolveFieldInPool"
 157                                         + " method is wrong for the field %s.%s"
 158                                         + " at %sindex %d",
 159                                 entry.klass,
 160                                 entry.name,
 161                                 cached,
 162                                 index);
 163             Asserts.assertEQ(info[1], offsetToRefer, msg);
 164         }
 165     }
 166 }
--- EOF ---