1 /* 2 * Copyright (c) 2010, 2013, 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 * @bug 7050328 8007035 26 * @summary smoke test for invokedynamic instructions 27 * @build indify.Indify 28 * @compile InvokeDynamicPrintArgs.java 29 * @run main/othervm 30 * indify.Indify 31 * --verify-specifier-count=8 32 * --expand-properties --classpath ${test.classes} 33 * --java test.java.lang.invoke.InvokeDynamicPrintArgs --check-output 34 * @run main/othervm 35 * indify.Indify 36 * --expand-properties --classpath ${test.classes} 37 * --java test.java.lang.invoke.InvokeDynamicPrintArgs --security-manager 38 */ 39 40 package test.java.lang.invoke; 41 42 import java.util.*; 43 import java.io.*; 44 45 import java.lang.invoke.*; 46 import java.security.*; 47 import static java.lang.invoke.MethodHandles.*; 48 import static java.lang.invoke.MethodType.*; 49 50 public class InvokeDynamicPrintArgs { 51 public static void main(String... av) throws Throwable { 52 if (av.length > 0 && av[0].equals("--check-output")) openBuf(); 53 if (av.length > 0 && av[0].equals("--security-manager")) setSM(); 54 System.out.println("Printing some argument lists, starting with a empty one:"); 55 INDY_nothing().invokeExact(); // BSM specifier #0 = {bsm} 56 INDY_bar().invokeExact("bar arg", 1); // BSM specifier #1 = {bsm2, Void.class, "void type"} 57 INDY_bar2().invokeExact("bar2 arg", 222); // BSM specifier #1 = (same) 58 INDY_baz().invokeExact("baz arg", 2, 3.14); // BSM specifier #2 = {bsm2, 1234.5} 59 INDY_foo().invokeExact("foo arg"); // BSM specifier #0 = (same) 60 // Hence, BSM specifier count should be 3. See "--verify-specifier-count=3" above. 61 System.out.println("Done printing argument lists."); 62 closeBuf(); 63 checkConstantRefs(); 64 } 65 66 private static void checkConstantRefs() throws Throwable { 67 // check some constant references to its self class 68 assertEquals(MT_bsm(), MH_bsm().type()); 69 assertEquals(MT_bsm2(), MH_bsm2().type()); 70 assertEquals(MT_bsm(), non_MH_bsm().type()); 71 } 72 private static void assertEquals(Object exp, Object act) { 73 if (exp == act || (exp != null && exp.equals(act))) return; 74 throw new AssertionError("not equal: "+exp+", "+act); 75 } 76 77 private static void setSM() { 78 Policy.setPolicy(new TestPolicy()); 79 System.setSecurityManager(new SecurityManager()); 80 } 81 82 private static PrintStream oldOut; 83 private static ByteArrayOutputStream buf; 84 private static void openBuf() { 85 oldOut = System.out; 86 buf = new ByteArrayOutputStream(); 87 System.setOut(new PrintStream(buf)); 88 } 89 private static void closeBuf() { 90 if (buf == null) return; 91 System.out.flush(); 92 System.setOut(oldOut); 93 String[] haveLines = new String(buf.toByteArray()).split("[\n\r]+"); 94 for (String line : haveLines) System.out.println(line); 95 Iterator<String> iter = Arrays.asList(haveLines).iterator(); 96 for (String want : EXPECT_OUTPUT) { 97 String have = iter.hasNext() ? iter.next() : "[EOF]"; 98 if (want.equals(have)) continue; 99 System.err.println("want line: "+want); 100 System.err.println("have line: "+have); 101 throw new AssertionError("unexpected output: "+have); 102 } 103 if (iter.hasNext()) 104 throw new AssertionError("unexpected output: "+iter.next()); 105 } 106 private static final String[] EXPECT_OUTPUT = { 107 "Printing some argument lists, starting with a empty one:", 108 "[test.java.lang.invoke.InvokeDynamicPrintArgs, nothing, ()void][]", 109 "[test.java.lang.invoke.InvokeDynamicPrintArgs, bar, (String,int)void, class java.lang.Void, void type!, 1, 234.5, 67.5, 89][bar arg, 1]", 110 "[test.java.lang.invoke.InvokeDynamicPrintArgs, bar2, (String,int)void, class java.lang.Void, void type!, 1, 234.5, 67.5, 89][bar2 arg, 222]", 111 "[test.java.lang.invoke.InvokeDynamicPrintArgs, baz, (String,int,double)void, 1234.5][baz arg, 2, 3.14]", 112 "[test.java.lang.invoke.InvokeDynamicPrintArgs, foo, (String)void][foo arg]", 113 "Done printing argument lists." 114 }; 115 116 private static boolean doPrint = true; 117 private static void printArgs(Object bsmInfo, Object... args) { 118 String message = bsmInfo+Arrays.deepToString(args); 119 if (doPrint) System.out.println(message); 120 } 121 private static MethodHandle MH_printArgs() throws ReflectiveOperationException { 122 shouldNotCallThis(); 123 return lookup().findStatic(lookup().lookupClass(), 124 "printArgs", methodType(void.class, Object.class, Object[].class)); 125 } 126 127 private static CallSite bsm(Lookup caller, String name, MethodType type) throws ReflectiveOperationException { 128 // ignore caller and name, but match the type: 129 Object bsmInfo = Arrays.asList(caller, name, type); 130 return new ConstantCallSite(MH_printArgs().bindTo(bsmInfo).asCollector(Object[].class, type.parameterCount()).asType(type)); 131 } 132 private static MethodType MT_bsm() { 133 shouldNotCallThis(); 134 return methodType(CallSite.class, Lookup.class, String.class, MethodType.class); 135 } 136 private static MethodHandle MH_bsm() throws ReflectiveOperationException { 137 shouldNotCallThis(); 138 return lookup().findStatic(lookup().lookupClass(), "bsm", MT_bsm()); 139 } 140 private static MethodHandle non_MH_bsm() throws ReflectiveOperationException { 141 return lookup().findStatic(lookup().lookupClass(), "bsm", MT_bsm()); 142 } 143 144 /* Example of a constant call site with user-data. 145 * In this case, the user data is exactly the BSM data. 146 * Note that a CCS with user data must use the "hooked" constructor 147 * to bind the CCS itself into the resulting target. 148 * A normal constructor would not allow a circular relation 149 * between the CCS and its target. 150 */ 151 public static class PrintingCallSite extends ConstantCallSite { 152 final Lookup caller; 153 final String name; 154 final Object[] staticArgs; 155 156 PrintingCallSite(Lookup caller, String name, MethodType type, Object... staticArgs) throws Throwable { 157 super(type, MH_createTarget()); 158 this.caller = caller; 159 this.name = name; 160 this.staticArgs = staticArgs; 161 } 162 163 public MethodHandle createTarget() { 164 try { 165 return lookup().bind(this, "runTarget", genericMethodType(0, true)).asType(type()); 166 } catch (ReflectiveOperationException ex) { 167 throw new RuntimeException(ex); 168 } 169 } 170 171 public Object runTarget(Object... dynamicArgs) { 172 List<Object> bsmInfo = new ArrayList<>(Arrays.asList(caller, name, type())); 173 bsmInfo.addAll(Arrays.asList(staticArgs)); 174 printArgs(bsmInfo, dynamicArgs); 175 return null; 176 } 177 178 private static MethodHandle MH_createTarget() throws ReflectiveOperationException { 179 shouldNotCallThis(); 180 return lookup().findVirtual(lookup().lookupClass(), "createTarget", methodType(MethodHandle.class)); 181 } 182 } 183 private static CallSite bsm2(Lookup caller, String name, MethodType type, Object... arg) throws Throwable { 184 // ignore caller and name, but match the type: 185 return new PrintingCallSite(caller, name, type, arg); 186 } 187 private static MethodType MT_bsm2() { 188 shouldNotCallThis(); 189 return methodType(CallSite.class, Lookup.class, String.class, MethodType.class, Object[].class); 190 } 191 private static MethodHandle MH_bsm2() throws ReflectiveOperationException { 192 shouldNotCallThis(); 193 return lookup().findStatic(lookup().lookupClass(), "bsm2", MT_bsm2()); 194 } 195 196 private static MethodHandle INDY_nothing() throws Throwable { 197 shouldNotCallThis(); 198 return ((CallSite) MH_bsm().invoke(lookup(), 199 "nothing", methodType(void.class) 200 )).dynamicInvoker(); 201 } 202 private static MethodHandle INDY_foo() throws Throwable { 203 shouldNotCallThis(); 204 return ((CallSite) MH_bsm().invoke(lookup(), 205 "foo", methodType(void.class, String.class) 206 )).dynamicInvoker(); 207 } 208 private static MethodHandle INDY_bar() throws Throwable { 209 shouldNotCallThis(); 210 return ((CallSite) MH_bsm2().invoke(lookup(), 211 "bar", methodType(void.class, String.class, int.class) 212 , Void.class, "void type!", 1, 234.5F, 67.5, (long)89 213 )).dynamicInvoker(); 214 } 215 private static MethodHandle INDY_bar2() throws Throwable { 216 shouldNotCallThis(); 217 return ((CallSite) MH_bsm2().invoke(lookup(), 218 "bar2", methodType(void.class, String.class, int.class) 219 , Void.class, "void type!", 1, 234.5F, 67.5, (long)89 220 )).dynamicInvoker(); 221 } 222 private static MethodHandle INDY_baz() throws Throwable { 223 shouldNotCallThis(); 224 return ((CallSite) MH_bsm2().invoke(lookup(), 225 "baz", methodType(void.class, String.class, int.class, double.class) 226 , 1234.5 227 )).dynamicInvoker(); 228 } 229 230 private static void shouldNotCallThis() { 231 // if this gets called, the transformation has not taken place 232 if (System.getProperty("InvokeDynamicPrintArgs.allow-untransformed") != null) return; 233 throw new AssertionError("this code should be statically transformed away by Indify"); 234 } 235 236 static class TestPolicy extends Policy { 237 final PermissionCollection permissions = new Permissions(); 238 TestPolicy() { 239 permissions.add(new java.io.FilePermission("<<ALL FILES>>", "read")); 240 } 241 public PermissionCollection getPermissions(ProtectionDomain domain) { 242 return permissions; 243 } 244 245 public PermissionCollection getPermissions(CodeSource codesource) { 246 return permissions; 247 } 248 249 public boolean implies(ProtectionDomain domain, Permission perm) { 250 return permissions.implies(perm); 251 } 252 } 253 }