1 /* 2 * Copyright (c) 2015, 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 8136421 27 * @requires vm.jvmci 28 * @library / /test/lib 29 * @library ../common/patches 30 * @modules java.base/jdk.internal.misc:+open 31 * @modules jdk.internal.vm.ci/jdk.vm.ci.hotspot:+open 32 * 33 * @build jdk.internal.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper 34 * jdk.internal.vm.ci/jdk.vm.ci.hotspot.PublicMetaspaceWrapperObject 35 * sun.hotspot.WhiteBox 36 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 37 * sun.hotspot.WhiteBox$WhiteBoxPermission 38 * @run main/othervm -Xbootclasspath/a:. 39 * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI 40 * -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI 41 * compiler.jvmci.compilerToVM.GetResolvedJavaMethodTest 42 */ 43 44 package compiler.jvmci.compilerToVM; 45 46 import jdk.internal.misc.Unsafe; 47 import jdk.test.lib.Asserts; 48 import jdk.vm.ci.hotspot.CompilerToVMHelper; 49 import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod; 50 import jdk.vm.ci.hotspot.PublicMetaspaceWrapperObject; 51 import sun.hotspot.WhiteBox; 52 53 import java.lang.reflect.Field; 54 import java.lang.reflect.Method; 55 56 public class GetResolvedJavaMethodTest { 57 private static enum TestCase { 58 NULL_BASE { 59 @Override 60 HotSpotResolvedJavaMethod getResolvedJavaMethod() { 61 return CompilerToVMHelper.getResolvedJavaMethod( 62 null, getPtrToMethod()); 63 } 64 }, 65 JAVA_METHOD_BASE { 66 @Override 67 HotSpotResolvedJavaMethod getResolvedJavaMethod() { 68 HotSpotResolvedJavaMethod methodInstance = TEST_METHOD; 69 try { 70 METASPACE_METHOD_FIELD.set(methodInstance, 71 getPtrToMethod()); 72 } catch (ReflectiveOperationException e) { 73 throw new Error("TEST BUG : " + e, e); 74 } 75 return CompilerToVMHelper.getResolvedJavaMethod( 76 methodInstance, 0L); 77 } 78 }, 79 JAVA_METHOD_BASE_IN_TWO { 80 @Override 81 HotSpotResolvedJavaMethod getResolvedJavaMethod() { 82 long ptr = getPtrToMethod(); 83 HotSpotResolvedJavaMethod methodInstance = TEST_METHOD; 84 try { 85 METASPACE_METHOD_FIELD.set(methodInstance, ptr / 2L); 86 } catch (ReflectiveOperationException e) { 87 throw new Error("TESTBUG : " + e, e); 88 } 89 return CompilerToVMHelper.getResolvedJavaMethod(methodInstance, 90 ptr - ptr / 2L); 91 } 92 }, 93 JAVA_METHOD_BASE_ZERO { 94 @Override 95 HotSpotResolvedJavaMethod getResolvedJavaMethod() { 96 long ptr = getPtrToMethod(); 97 HotSpotResolvedJavaMethod methodInstance = TEST_METHOD; 98 try { 99 METASPACE_METHOD_FIELD.set(methodInstance, 0L); 100 } catch (ReflectiveOperationException e) { 101 throw new Error("TESTBUG : " + e, e); 102 } 103 return CompilerToVMHelper.getResolvedJavaMethod(methodInstance, 104 ptr); 105 } 106 } 107 ; 108 abstract HotSpotResolvedJavaMethod getResolvedJavaMethod(); 109 } 110 111 private static final Unsafe UNSAFE = Unsafe.getUnsafe(); 112 private static final WhiteBox WB = WhiteBox.getWhiteBox(); 113 private static final Field METASPACE_METHOD_FIELD; 114 private static final Class<?> TEST_CLASS = GetResolvedJavaMethodTest.class; 115 private static final HotSpotResolvedJavaMethod TEST_METHOD; 116 private static final long PTR; 117 static { 118 try { 119 Method method = TEST_CLASS.getDeclaredMethod("test", TestCase.class); 120 TEST_METHOD = CompilerToVMHelper.asResolvedJavaMethod(method); 121 } catch (NoSuchMethodException e) { 122 throw new Error("TESTBUG : " + e, e); 123 } 124 try { 125 // jdk.vm.ci.hotspot.HotSpotResolvedJavaMethodImpl.metaspaceMethod 126 METASPACE_METHOD_FIELD = TEST_METHOD.getClass() 127 .getDeclaredField("metaspaceMethod"); 128 METASPACE_METHOD_FIELD.setAccessible(true); 129 PTR = (long) METASPACE_METHOD_FIELD.get(TEST_METHOD); 130 } catch (ReflectiveOperationException e) { 131 throw new Error("TESTBUG : " + e, e); 132 } 133 134 } 135 136 private static long getPtrToMethod() { 137 Field field; 138 try { 139 field = TEST_CLASS.getDeclaredField("PTR"); 140 } catch (NoSuchFieldException e) { 141 throw new Error("TEST BUG : " + e, e); 142 } 143 Object base = UNSAFE.staticFieldBase(field); 144 return WB.getObjectAddress(base) + UNSAFE.staticFieldOffset(field); 145 } 146 147 public void test(TestCase testCase) { 148 System.out.println(testCase.name()); 149 HotSpotResolvedJavaMethod result = testCase.getResolvedJavaMethod(); 150 Asserts.assertNotNull(result, testCase + " : got null"); 151 Asserts.assertEQ(TEST_CLASS, 152 CompilerToVMHelper.getMirror(result.getDeclaringClass()), 153 testCase + " : unexpected declaring class"); 154 } 155 156 public static void main(String[] args) { 157 GetResolvedJavaMethodTest test = new GetResolvedJavaMethodTest(); 158 for (TestCase testCase : TestCase.values()) { 159 test.test(testCase); 160 } 161 testObjectBase(); 162 testMetaspaceWrapperBase(); 163 } 164 165 private static void testMetaspaceWrapperBase() { 166 try { 167 HotSpotResolvedJavaMethod method 168 = CompilerToVMHelper.getResolvedJavaMethod( 169 new PublicMetaspaceWrapperObject() { 170 @Override 171 public long getMetaspacePointer() { 172 return getPtrToMethod(); 173 } 174 }, 0L); 175 throw new AssertionError("Test METASPACE_WRAPPER_BASE." 176 + " Expected IllegalArgumentException has not been caught"); 177 } catch (IllegalArgumentException e) { 178 // expected 179 } 180 } 181 182 private static void testObjectBase() { 183 try { 184 HotSpotResolvedJavaMethod method 185 = CompilerToVMHelper.getResolvedJavaMethod(new Object(), 0L); 186 throw new AssertionError("Test OBJECT_BASE." 187 + " Expected IllegalArgumentException has not been caught"); 188 } catch (IllegalArgumentException e) { 189 // expected 190 } 191 } 192 }