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.runtime 36 * jdk.internal.vm.ci/jdk.vm.ci.meta 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 * -Djvmci.Compiler=null 44 * compiler.jvmci.compilerToVM.ResolvePossiblyCachedConstantInPoolTest 45 */ 46 47 package compiler.jvmci.compilerToVM; 48 49 import compiler.jvmci.compilerToVM.ConstantPoolTestCase.ConstantTypes; 50 import compiler.jvmci.compilerToVM.ConstantPoolTestCase.TestedCPEntry; 51 import compiler.jvmci.compilerToVM.ConstantPoolTestCase.Validator; 52 import compiler.jvmci.compilerToVM.ConstantPoolTestsHelper.DummyClasses; 53 import jdk.test.lib.Asserts; 54 import jdk.vm.ci.hotspot.CompilerToVMHelper; 55 import jdk.vm.ci.meta.ConstantPool; 56 57 import java.util.HashMap; 58 import java.util.Map; 59 60 import static compiler.jvmci.compilerToVM.ConstantPoolTestCase.ConstantTypes.CONSTANT_STRING; 61 62 /** 63 * Test for {@code jdk.vm.ci.hotspot.CompilerToVM.resolvePossiblyCachedConstantInPool} method 64 */ 65 public class ResolvePossiblyCachedConstantInPoolTest { 66 67 public static void main(String[] args) throws Exception { 68 Map<ConstantTypes, Validator> typeTests = new HashMap<>(); 69 typeTests.put(CONSTANT_STRING, ResolvePossiblyCachedConstantInPoolTest::validateString); 70 ConstantPoolTestCase testCase = new ConstantPoolTestCase(typeTests); 71 // The next "Class.forName" is here for the following reason. 72 // When class is initialized, constant pool cache is available. 73 // This method works only with cached constant pool. 74 for (DummyClasses dummy : DummyClasses.values()) { 75 Class.forName(dummy.klass.getName()); 76 } 77 testCase.test(); 78 } 79 80 private static void validateString(ConstantPool constantPoolCTVM, 81 ConstantTypes cpType, 82 DummyClasses dummyClass, 83 int cpi) { 84 TestedCPEntry entry = cpType.getTestedCPEntry(dummyClass, cpi); 85 if (entry == null) { 86 return; 87 } 88 int index = cpi; 89 String cached = ""; 90 int cpci = dummyClass.getCPCacheIndex(cpi); 91 if (cpci != ConstantPoolTestsHelper.NO_CP_CACHE_PRESENT) { 92 index = cpci; 93 cached = "cached "; 94 } 95 Object constantInPool = CompilerToVMHelper.resolvePossiblyCachedConstantInPool(constantPoolCTVM, index); 96 String stringToVerify = (String) constantInPool; 97 String stringToRefer = entry.name; 98 if (stringToRefer.equals("") && cpci != ConstantPoolTestsHelper.NO_CP_CACHE_PRESENT) { 99 stringToRefer = null; // tested method returns null for cached empty strings 100 } 101 String msg = String.format("Wrong string accessed by %sconstant pool index %d", cached, index); 102 Asserts.assertEQ(stringToRefer, stringToVerify, msg); 103 } 104 }