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