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 package org.graalvm.compiler.core.test;
24
25 import java.lang.invoke.MethodHandle;
26 import java.lang.invoke.MethodHandles;
27 import java.lang.invoke.MethodType;
28
29 import org.junit.Test;
30
31 import org.graalvm.compiler.code.CompilationResult;
32 import org.graalvm.compiler.test.ExportingClassLoader;
33
34 import jdk.internal.org.objectweb.asm.ClassWriter;
35 import jdk.internal.org.objectweb.asm.Label;
36 import jdk.internal.org.objectweb.asm.MethodVisitor;
37 import jdk.internal.org.objectweb.asm.Opcodes;
38 import jdk.vm.ci.code.InstalledCode;
39 import jdk.vm.ci.meta.ResolvedJavaMethod;
40
41 public final class InterfaceMethodHandleTest extends GraalCompilerTest implements Opcodes {
42 private static final MethodHandle INTERFACE_HANDLE_M;
43 private static final MethodHandle INTERFACE_HANDLE_M2;
44
45 public interface I {
46 int m();
47
48 int m2(int a, int b, int c, int d, int e, int f, int g, int h, int i, int j);
49 }
50
51 static class A implements I {
52 @Override
53 public int m() {
54 return 0;
55 }
56
57 @Override
58 public int m2(int a, int b, int c, int d, int e, int f, int g, int h, int i, int j) {
59 return 1;
60 }
61
62 }
63
64 static class M2Thrower implements I {
65 @Override
66 public int m() {
67 return 0;
68 }
69
70 @Override
71 public int m2(int a, int b, int c, int d, int e, int f, int g, int h, int i, int j) {
72 throw new InternalError();
73 }
74
75 }
76
77 static {
78 try {
79 MethodType type = MethodType.fromMethodDescriptorString("()I", I.class.getClassLoader());
80 INTERFACE_HANDLE_M = MethodHandles.lookup().findVirtual(I.class, "m", type);
81 MethodType type2 = MethodType.fromMethodDescriptorString("(IIIIIIIIII)I", I.class.getClassLoader());
82 INTERFACE_HANDLE_M2 = MethodHandles.lookup().findVirtual(I.class, "m2", type2);
83 } catch (IllegalAccessException | NoSuchMethodException e) {
84 throw new RuntimeException("unable to initialize method handle", e);
85 }
86 }
87
88 public static Object invokeInterfaceHandle(I o) throws Throwable {
89 return (int) INTERFACE_HANDLE_M.invokeExact(o);
90 }
91
92 @Test
93 public void testInvokeInterface01() {
94 test("invokeInterfaceHandle", new A());
95
96 }
97
98 @Test
99 public void testInvokeInterface02() throws InstantiationException, IllegalAccessException, ClassNotFoundException {
100 test("invokeInterfaceHandle", loader.findClass(NAME).newInstance());
101 }
102
103 public static Object invokeInterfaceHandle2(I o, int a, int b, int c, int d, int e, int f, int g, int h, int i, int j) throws Throwable {
104 return (int) INTERFACE_HANDLE_M2.invokeExact(o, a, b, c, d, e, f, g, h, i, j);
105 }
106
107 @Override
108 protected InstalledCode addMethod(ResolvedJavaMethod method, CompilationResult compResult) {
109 if (method.getDeclaringClass().equals(getMetaAccess().lookupJavaType(M2Thrower.class))) {
110 // Make sure M2Thrower.m2 is invoked from normal code
111 return getBackend().createDefaultInstalledCode(method, compResult);
112 }
113 return super.addMethod(method, compResult);
114 }
115
116 /**
117 * Try to exercise a mixed calling sequence with regular JIT code calling a method handle that
118 * can't be inlined with an implementation compiled by Graal that throws an exception.
119 */
120 @Test
121 public void testInvokeInterface03() throws Throwable {
122 A goodInstance = new A();
123 I badInstance = new M2Thrower();
124 getCode(getMetaAccess().lookupJavaMethod(getMethod(M2Thrower.class, "m2")));
125 for (int x = 0; x < 1000; x++) {
126 final int limit = 20000;
127 for (int i = 0; i <= limit; i++) {
128 try {
129 invokeInterfaceHandle2(i < limit - 1 ? goodInstance : badInstance, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
130 } catch (InternalError e) {
131
132 }
133 }
134 }
135 }
136
137 private static final String BASENAME = InterfaceMethodHandleTest.class.getName();
138 private static final String NAME = BASENAME + "_B";
139 private AsmLoader loader = new AsmLoader(UnbalancedMonitorsTest.class.getClassLoader());
140
141 /**
142 * Construct a type which claims to implement {@link I} but with incorrect access on {@link I#m}
143 * so that an exception must be thrown.
144 */
145 public static byte[] bytesForB() {
146
147 ClassWriter cw = new ClassWriter(0);
148 MethodVisitor mv;
149 String jvmName = NAME.replace('.', '/');
150 cw.visit(52, ACC_SUPER | ACC_PUBLIC, jvmName, null, "java/lang/Object", new String[]{BASENAME.replace('.', '/') + "$I"});
151
152 mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
153 mv.visitCode();
154 Label l0 = new Label();
155 mv.visitLabel(l0);
156 mv.visitVarInsn(ALOAD, 0);
157 mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
158 mv.visitInsn(RETURN);
159 Label l1 = new Label();
160 mv.visitLabel(l1);
161 mv.visitMaxs(1, 1);
162 mv.visitEnd();
163
164 mv = cw.visitMethod(ACC_PRIVATE, "m", "()I", null, null);
165 mv.visitCode();
166 l0 = new Label();
167 mv.visitLabel(l0);
168 mv.visitInsn(ICONST_0);
169 mv.visitInsn(IRETURN);
170 l1 = new Label();
171 mv.visitLabel(l1);
172 mv.visitMaxs(1, 1);
173 mv.visitEnd();
174
175 cw.visitEnd();
176
177 mv = cw.visitMethod(ACC_PRIVATE, "m2", "(IIIIIIIIII)I", null, null);
178 mv.visitCode();
179 l0 = new Label();
180 mv.visitLabel(l0);
181 mv.visitInsn(ICONST_0);
182 mv.visitInsn(IRETURN);
183 l1 = new Label();
184 mv.visitLabel(l1);
185 mv.visitMaxs(1, 11);
186 mv.visitEnd();
187
188 cw.visitEnd();
189
190 return cw.toByteArray();
191 }
192
193 public static class AsmLoader extends ExportingClassLoader {
194 Class<?> loaded;
195
196 public AsmLoader(ClassLoader parent) {
197 super(parent);
198 }
199
200 @Override
201 protected Class<?> findClass(String name) throws ClassNotFoundException {
202 if (name.equals(NAME)) {
203 if (loaded != null) {
204 return loaded;
205 }
206 byte[] bytes = bytesForB();
207 return (loaded = defineClass(name, bytes, 0, bytes.length));
208 } else {
209 return super.findClass(name);
210 }
211 }
212 }
213 }