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 (os.simpleArch == "x64" | os.simpleArch == "sparcv9" | os.simpleArch == "aarch64")
  28  * @library /testlibrary /test/lib /
  29  * @library ../common/patches
  30  * @modules java.base/jdk.internal.misc
  31  *          java.base/jdk.internal.org.objectweb.asm
  32  *          java.base/jdk.internal.org.objectweb.asm.tree

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