1 /*
2 * Copyright (c) 2010, 2011, 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 /* @test
25 * @summary smoke test for invokedynamic instructions
26 * @build indify.Indify
27 * @compile InvokeDynamicPrintArgs.java
28 * @run main/othervm
29 * indify.Indify
30 * --verify-specifier-count=3
31 * --expand-properties --classpath ${test.classes}
32 * --java test.java.lang.invoke.InvokeDynamicPrintArgs --check-output
33 * @run main/othervm
34 * indify.Indify
35 * --expand-properties --classpath ${test.classes}
36 * --java test.java.lang.invoke.InvokeDynamicPrintArgs --security-manager
37 */
38
39 package test.java.lang.invoke;
40
41 import java.util.*;
42 import java.io.*;
43
44 import java.lang.invoke.*;
45 import static java.lang.invoke.MethodHandles.*;
46 import static java.lang.invoke.MethodType.*;
47
48 public class InvokeDynamicPrintArgs {
49 public static void main(String... av) throws Throwable {
50 if (av.length > 0 && av[0].equals("--check-output")) openBuf();
51 if (av.length > 0 && av[0].equals("--security-manager")) setSM();
52 System.out.println("Printing some argument lists, starting with a empty one:");
53 INDY_nothing().invokeExact(); // BSM specifier #0 = {bsm}
54 INDY_bar().invokeExact("bar arg", 1); // BSM specifier #1 = {bsm2, Void.class, "void type"}
55 INDY_bar2().invokeExact("bar2 arg", 222); // BSM specifier #1 = (same)
56 INDY_baz().invokeExact("baz arg", 2, 3.14); // BSM specifier #2 = {bsm2, 1234.5}
57 INDY_foo().invokeExact("foo arg"); // BSM specifier #0 = (same)
58 // Hence, BSM specifier count should be 3. See "--verify-specifier-count=3" above.
59 System.out.println("Done printing argument lists.");
60 closeBuf();
61 checkConstantRefs();
62 }
63
64 private static void checkConstantRefs() throws Throwable {
65 // check some constant references:
66 assertEquals(MT_bsm(), MH_bsm().type());
67 assertEquals(MT_bsm2(), MH_bsm2().type());
68 try {
69 assertEquals(MT_bsm(), non_MH_bsm().type());
70 // if SM is installed, must throw before this point
71 assertEquals(false, System.getSecurityManager() != null);
72 } catch (SecurityException ex) {
73 // if SM is installed, must throw to this point
74 assertEquals(true, System.getSecurityManager() != null);
75 }
76 }
77 private static void assertEquals(Object exp, Object act) {
78 if (exp == act || (exp != null && exp.equals(act))) return;
79 throw new AssertionError("not equal: "+exp+", "+act);
80 }
81
82 private static void setSM() {
83 // Test for severe security manager interactions (7050328).
84 class SM extends SecurityManager {
85 public void checkPackageAccess(String pkg) {
86 if (pkg.startsWith("test."))
87 throw new SecurityException("checkPackageAccess "+pkg);
88 }
89 public void checkMemberAccess(Class<?> clazz, int which) {
90 if (clazz == InvokeDynamicPrintArgs.class)
91 throw new SecurityException("checkMemberAccess "+clazz.getName()+" #"+which);
92 }
93 // allow these others:
94 public void checkPermission(java.security.Permission perm) {
95 }
96 }
97 System.setSecurityManager(new SM());
98 }
99
100 private static PrintStream oldOut;
101 private static ByteArrayOutputStream buf;
102 private static void openBuf() {
103 oldOut = System.out;
104 buf = new ByteArrayOutputStream();
105 System.setOut(new PrintStream(buf));
106 }
107 private static void closeBuf() {
108 if (buf == null) return;
109 System.out.flush();
110 System.setOut(oldOut);
111 String[] haveLines = new String(buf.toByteArray()).split("[\n\r]+");
112 for (String line : haveLines) System.out.println(line);
113 Iterator<String> iter = Arrays.asList(haveLines).iterator();
114 for (String want : EXPECT_OUTPUT) {
115 String have = iter.hasNext() ? iter.next() : "[EOF]";
116 if (want.equals(have)) continue;
117 System.err.println("want line: "+want);
118 System.err.println("have line: "+have);
119 throw new AssertionError("unexpected output: "+have);
120 }
121 if (iter.hasNext())
122 throw new AssertionError("unexpected output: "+iter.next());
123 }
124 private static final String[] EXPECT_OUTPUT = {
125 "Printing some argument lists, starting with a empty one:",
126 "[test.java.lang.invoke.InvokeDynamicPrintArgs, nothing, ()void][]",
127 "[test.java.lang.invoke.InvokeDynamicPrintArgs, bar, (String,int)void, class java.lang.Void, void type!, 1, 234.5, 67.5, 89][bar arg, 1]",
128 "[test.java.lang.invoke.InvokeDynamicPrintArgs, bar2, (String,int)void, class java.lang.Void, void type!, 1, 234.5, 67.5, 89][bar2 arg, 222]",
129 "[test.java.lang.invoke.InvokeDynamicPrintArgs, baz, (String,int,double)void, 1234.5][baz arg, 2, 3.14]",
130 "[test.java.lang.invoke.InvokeDynamicPrintArgs, foo, (String)void][foo arg]",
131 "Done printing argument lists."
132 };
133
134 private static boolean doPrint = true;
135 private static void printArgs(Object bsmInfo, Object... args) {
136 String message = bsmInfo+Arrays.deepToString(args);
137 if (doPrint) System.out.println(message);
138 }
139 private static MethodHandle MH_printArgs() throws ReflectiveOperationException {
140 shouldNotCallThis();
141 return lookup().findStatic(lookup().lookupClass(),
142 "printArgs", methodType(void.class, Object.class, Object[].class));
143 }
144
145 private static CallSite bsm(Lookup caller, String name, MethodType type) throws ReflectiveOperationException {
146 // ignore caller and name, but match the type:
147 Object bsmInfo = Arrays.asList(caller, name, type);
148 return new ConstantCallSite(MH_printArgs().bindTo(bsmInfo).asCollector(Object[].class, type.parameterCount()).asType(type));
149 }
150 private static MethodType MT_bsm() {
151 shouldNotCallThis();
152 return methodType(CallSite.class, Lookup.class, String.class, MethodType.class);
153 }
154 private static MethodHandle MH_bsm() throws ReflectiveOperationException {
155 shouldNotCallThis();
156 return lookup().findStatic(lookup().lookupClass(), "bsm", MT_bsm());
157 }
158 private static MethodHandle non_MH_bsm() throws ReflectiveOperationException {
159 return lookup().findStatic(lookup().lookupClass(), "bsm", MT_bsm());
160 }
161
162 /* Example of a constant call site with user-data.
163 * In this case, the user data is exactly the BSM data.
164 * Note that a CCS with user data must use the "hooked" constructor
165 * to bind the CCS itself into the resulting target.
166 * A normal constructor would not allow a circular relation
167 * between the CCS and its target.
168 */
169 public static class PrintingCallSite extends ConstantCallSite {
170 final Lookup caller;
171 final String name;
172 final Object[] staticArgs;
173
174 PrintingCallSite(Lookup caller, String name, MethodType type, Object... staticArgs) throws Throwable {
175 super(type, MH_createTarget());
176 this.caller = caller;
177 this.name = name;
178 this.staticArgs = staticArgs;
179 }
180
181 public MethodHandle createTarget() {
182 try {
183 return lookup().bind(this, "runTarget", genericMethodType(0, true)).asType(type());
184 } catch (ReflectiveOperationException ex) {
185 throw new RuntimeException(ex);
186 }
187 }
188
189 public Object runTarget(Object... dynamicArgs) {
190 List<Object> bsmInfo = new ArrayList<>(Arrays.asList(caller, name, type()));
191 bsmInfo.addAll(Arrays.asList(staticArgs));
192 printArgs(bsmInfo, dynamicArgs);
193 return null;
194 }
195
196 private static MethodHandle MH_createTarget() throws ReflectiveOperationException {
197 shouldNotCallThis();
198 return lookup().findVirtual(lookup().lookupClass(), "createTarget", methodType(MethodHandle.class));
199 }
200 }
201 private static CallSite bsm2(Lookup caller, String name, MethodType type, Object... arg) throws Throwable {
202 // ignore caller and name, but match the type:
203 return new PrintingCallSite(caller, name, type, arg);
204 }
205 private static MethodType MT_bsm2() {
206 shouldNotCallThis();
207 return methodType(CallSite.class, Lookup.class, String.class, MethodType.class, Object[].class);
208 }
209 private static MethodHandle MH_bsm2() throws ReflectiveOperationException {
210 shouldNotCallThis();
211 return lookup().findStatic(lookup().lookupClass(), "bsm2", MT_bsm2());
212 }
213
214 private static MethodHandle INDY_nothing() throws Throwable {
215 shouldNotCallThis();
216 return ((CallSite) MH_bsm().invoke(lookup(),
217 "nothing", methodType(void.class)
218 )).dynamicInvoker();
219 }
220 private static MethodHandle INDY_foo() throws Throwable {
221 shouldNotCallThis();
222 return ((CallSite) MH_bsm().invoke(lookup(),
223 "foo", methodType(void.class, String.class)
224 )).dynamicInvoker();
225 }
226 private static MethodHandle INDY_bar() throws Throwable {
227 shouldNotCallThis();
228 return ((CallSite) MH_bsm2().invoke(lookup(),
229 "bar", methodType(void.class, String.class, int.class)
230 , Void.class, "void type!", 1, 234.5F, 67.5, (long)89
231 )).dynamicInvoker();
232 }
233 private static MethodHandle INDY_bar2() throws Throwable {
234 shouldNotCallThis();
235 return ((CallSite) MH_bsm2().invoke(lookup(),
236 "bar2", methodType(void.class, String.class, int.class)
237 , Void.class, "void type!", 1, 234.5F, 67.5, (long)89
238 )).dynamicInvoker();
239 }
240 private static MethodHandle INDY_baz() throws Throwable {
241 shouldNotCallThis();
242 return ((CallSite) MH_bsm2().invoke(lookup(),
243 "baz", methodType(void.class, String.class, int.class, double.class)
244 , 1234.5
245 )).dynamicInvoker();
246 }
247
248 private static void shouldNotCallThis() {
249 // if this gets called, the transformation has not taken place
250 if (System.getProperty("InvokeDynamicPrintArgs.allow-untransformed") != null) return;
251 throw new AssertionError("this code should be statically transformed away by Indify");
252 }
253 }