Mercurial > hg > truffle
annotate src/share/vm/runtime/reflection.cpp @ 51:1ffa5cdd0b7e
6667089: 3/3 multiple redefinitions of a class break reflection
Summary: Use instanceKlass::method_with_idnum() instead of slot() to work with RedefineClasses().
Reviewed-by: sspitsyn
| author | dcubed |
|---|---|
| date | Wed, 12 Mar 2008 18:39:05 -0700 |
| parents | a61af66fc99e |
| children | e7a91a357527 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * Copyright 1997-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #include "incls/_precompiled.incl" | |
| 26 #include "incls/_reflection.cpp.incl" | |
| 27 | |
| 28 #define JAVA_1_5_VERSION 49 | |
| 29 | |
| 30 static void trace_class_resolution(klassOop to_class) { | |
| 31 ResourceMark rm; | |
| 32 int line_number = -1; | |
| 33 const char * source_file = NULL; | |
| 34 klassOop caller = NULL; | |
| 35 JavaThread* jthread = JavaThread::current(); | |
| 36 if (jthread->has_last_Java_frame()) { | |
| 37 vframeStream vfst(jthread); | |
| 38 // skip over any frames belonging to java.lang.Class | |
| 39 while (!vfst.at_end() && | |
| 40 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class()) { | |
| 41 vfst.next(); | |
| 42 } | |
| 43 if (!vfst.at_end()) { | |
| 44 // this frame is a likely suspect | |
| 45 caller = vfst.method()->method_holder(); | |
| 46 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
| 47 symbolOop s = instanceKlass::cast(vfst.method()->method_holder())->source_file_name(); | |
| 48 if (s != NULL) { | |
| 49 source_file = s->as_C_string(); | |
| 50 } | |
| 51 } | |
| 52 } | |
| 53 if (caller != NULL) { | |
| 54 const char * from = Klass::cast(caller)->external_name(); | |
| 55 const char * to = Klass::cast(to_class)->external_name(); | |
| 56 // print in a single call to reduce interleaving between threads | |
| 57 if (source_file != NULL) { | |
| 58 tty->print("RESOLVE %s %s %s:%d (reflection)\n", from, to, source_file, line_number); | |
| 59 } else { | |
| 60 tty->print("RESOLVE %s %s (reflection)\n", from, to); | |
| 61 } | |
| 62 } | |
| 63 } | |
| 64 | |
| 65 | |
| 66 oop Reflection::box(jvalue* value, BasicType type, TRAPS) { | |
| 67 if (type == T_VOID) { | |
| 68 return NULL; | |
| 69 } | |
| 70 if (type == T_OBJECT || type == T_ARRAY) { | |
| 71 // regular objects are not boxed | |
| 72 return (oop) value->l; | |
| 73 } | |
| 74 oop result = java_lang_boxing_object::create(type, value, CHECK_NULL); | |
| 75 if (result == NULL) { | |
| 76 THROW_(vmSymbols::java_lang_IllegalArgumentException(), result); | |
| 77 } | |
| 78 return result; | |
| 79 } | |
| 80 | |
| 81 | |
| 82 BasicType Reflection::unbox_for_primitive(oop box, jvalue* value, TRAPS) { | |
| 83 if (box == NULL) { | |
| 84 THROW_(vmSymbols::java_lang_IllegalArgumentException(), T_ILLEGAL); | |
| 85 } | |
| 86 return java_lang_boxing_object::get_value(box, value); | |
| 87 } | |
| 88 | |
| 89 BasicType Reflection::unbox_for_regular_object(oop box, jvalue* value) { | |
| 90 // Note: box is really the unboxed oop. It might even be a Short, etc.! | |
| 91 value->l = (jobject) box; | |
| 92 return T_OBJECT; | |
| 93 } | |
| 94 | |
| 95 | |
| 96 void Reflection::widen(jvalue* value, BasicType current_type, BasicType wide_type, TRAPS) { | |
| 97 assert(wide_type != current_type, "widen should not be called with identical types"); | |
| 98 switch (wide_type) { | |
| 99 case T_BOOLEAN: | |
| 100 case T_BYTE: | |
| 101 case T_CHAR: | |
| 102 break; // fail | |
| 103 case T_SHORT: | |
| 104 switch (current_type) { | |
| 105 case T_BYTE: | |
| 106 value->s = (jshort) value->b; | |
| 107 return; | |
| 108 } | |
| 109 break; // fail | |
| 110 case T_INT: | |
| 111 switch (current_type) { | |
| 112 case T_BYTE: | |
| 113 value->i = (jint) value->b; | |
| 114 return; | |
| 115 case T_CHAR: | |
| 116 value->i = (jint) value->c; | |
| 117 return; | |
| 118 case T_SHORT: | |
| 119 value->i = (jint) value->s; | |
| 120 return; | |
| 121 } | |
| 122 break; // fail | |
| 123 case T_LONG: | |
| 124 switch (current_type) { | |
| 125 case T_BYTE: | |
| 126 value->j = (jlong) value->b; | |
| 127 return; | |
| 128 case T_CHAR: | |
| 129 value->j = (jlong) value->c; | |
| 130 return; | |
| 131 case T_SHORT: | |
| 132 value->j = (jlong) value->s; | |
| 133 return; | |
| 134 case T_INT: | |
| 135 value->j = (jlong) value->i; | |
| 136 return; | |
| 137 } | |
| 138 break; // fail | |
| 139 case T_FLOAT: | |
| 140 switch (current_type) { | |
| 141 case T_BYTE: | |
| 142 value->f = (jfloat) value->b; | |
| 143 return; | |
| 144 case T_CHAR: | |
| 145 value->f = (jfloat) value->c; | |
| 146 return; | |
| 147 case T_SHORT: | |
| 148 value->f = (jfloat) value->s; | |
| 149 return; | |
| 150 case T_INT: | |
| 151 value->f = (jfloat) value->i; | |
| 152 return; | |
| 153 case T_LONG: | |
| 154 value->f = (jfloat) value->j; | |
| 155 return; | |
| 156 } | |
| 157 break; // fail | |
| 158 case T_DOUBLE: | |
| 159 switch (current_type) { | |
| 160 case T_BYTE: | |
| 161 value->d = (jdouble) value->b; | |
| 162 return; | |
| 163 case T_CHAR: | |
| 164 value->d = (jdouble) value->c; | |
| 165 return; | |
| 166 case T_SHORT: | |
| 167 value->d = (jdouble) value->s; | |
| 168 return; | |
| 169 case T_INT: | |
| 170 value->d = (jdouble) value->i; | |
| 171 return; | |
| 172 case T_FLOAT: | |
| 173 value->d = (jdouble) value->f; | |
| 174 return; | |
| 175 case T_LONG: | |
| 176 value->d = (jdouble) value->j; | |
| 177 return; | |
| 178 } | |
| 179 break; // fail | |
| 180 default: | |
| 181 break; // fail | |
| 182 } | |
| 183 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
| 184 } | |
| 185 | |
| 186 | |
| 187 BasicType Reflection::array_get(jvalue* value, arrayOop a, int index, TRAPS) { | |
| 188 if (!a->is_within_bounds(index)) { | |
| 189 THROW_(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), T_ILLEGAL); | |
| 190 } | |
| 191 if (a->is_objArray()) { | |
| 192 value->l = (jobject) objArrayOop(a)->obj_at(index); | |
| 193 return T_OBJECT; | |
| 194 } else { | |
| 195 assert(a->is_typeArray(), "just checking"); | |
| 196 BasicType type = typeArrayKlass::cast(a->klass())->element_type(); | |
| 197 switch (type) { | |
| 198 case T_BOOLEAN: | |
| 199 value->z = typeArrayOop(a)->bool_at(index); | |
| 200 break; | |
| 201 case T_CHAR: | |
| 202 value->c = typeArrayOop(a)->char_at(index); | |
| 203 break; | |
| 204 case T_FLOAT: | |
| 205 value->f = typeArrayOop(a)->float_at(index); | |
| 206 break; | |
| 207 case T_DOUBLE: | |
| 208 value->d = typeArrayOop(a)->double_at(index); | |
| 209 break; | |
| 210 case T_BYTE: | |
| 211 value->b = typeArrayOop(a)->byte_at(index); | |
| 212 break; | |
| 213 case T_SHORT: | |
| 214 value->s = typeArrayOop(a)->short_at(index); | |
| 215 break; | |
| 216 case T_INT: | |
| 217 value->i = typeArrayOop(a)->int_at(index); | |
| 218 break; | |
| 219 case T_LONG: | |
| 220 value->j = typeArrayOop(a)->long_at(index); | |
| 221 break; | |
| 222 default: | |
| 223 return T_ILLEGAL; | |
| 224 } | |
| 225 return type; | |
| 226 } | |
| 227 } | |
| 228 | |
| 229 | |
| 230 void Reflection::array_set(jvalue* value, arrayOop a, int index, BasicType value_type, TRAPS) { | |
| 231 if (!a->is_within_bounds(index)) { | |
| 232 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 233 } | |
| 234 if (a->is_objArray()) { | |
| 235 if (value_type == T_OBJECT) { | |
| 236 oop obj = (oop) value->l; | |
| 237 if (obj != NULL) { | |
| 238 klassOop element_klass = objArrayKlass::cast(a->klass())->element_klass(); | |
| 239 if (!obj->is_a(element_klass)) { | |
| 240 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "array element type mismatch"); | |
| 241 } | |
| 242 } | |
| 243 objArrayOop(a)->obj_at_put(index, obj); | |
| 244 } | |
| 245 } else { | |
| 246 assert(a->is_typeArray(), "just checking"); | |
| 247 BasicType array_type = typeArrayKlass::cast(a->klass())->element_type(); | |
| 248 if (array_type != value_type) { | |
| 249 // The widen operation can potentially throw an exception, but cannot block, | |
| 250 // so typeArrayOop a is safe if the call succeeds. | |
| 251 widen(value, value_type, array_type, CHECK); | |
| 252 } | |
| 253 switch (array_type) { | |
| 254 case T_BOOLEAN: | |
| 255 typeArrayOop(a)->bool_at_put(index, value->z); | |
| 256 break; | |
| 257 case T_CHAR: | |
| 258 typeArrayOop(a)->char_at_put(index, value->c); | |
| 259 break; | |
| 260 case T_FLOAT: | |
| 261 typeArrayOop(a)->float_at_put(index, value->f); | |
| 262 break; | |
| 263 case T_DOUBLE: | |
| 264 typeArrayOop(a)->double_at_put(index, value->d); | |
| 265 break; | |
| 266 case T_BYTE: | |
| 267 typeArrayOop(a)->byte_at_put(index, value->b); | |
| 268 break; | |
| 269 case T_SHORT: | |
| 270 typeArrayOop(a)->short_at_put(index, value->s); | |
| 271 break; | |
| 272 case T_INT: | |
| 273 typeArrayOop(a)->int_at_put(index, value->i); | |
| 274 break; | |
| 275 case T_LONG: | |
| 276 typeArrayOop(a)->long_at_put(index, value->j); | |
| 277 break; | |
| 278 default: | |
| 279 THROW(vmSymbols::java_lang_IllegalArgumentException()); | |
| 280 } | |
| 281 } | |
| 282 } | |
| 283 | |
| 284 | |
| 285 klassOop Reflection::basic_type_mirror_to_arrayklass(oop basic_type_mirror, TRAPS) { | |
| 286 assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking"); | |
| 287 BasicType type = java_lang_Class::primitive_type(basic_type_mirror); | |
| 288 if (type == T_VOID) { | |
| 289 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
| 290 } else { | |
| 291 return Universe::typeArrayKlassObj(type); | |
| 292 } | |
| 293 } | |
| 294 | |
| 295 | |
| 296 oop Reflection:: basic_type_arrayklass_to_mirror(klassOop basic_type_arrayklass, TRAPS) { | |
| 297 BasicType type = typeArrayKlass::cast(basic_type_arrayklass)->element_type(); | |
| 298 return Universe::java_mirror(type); | |
| 299 } | |
| 300 | |
| 301 | |
| 302 arrayOop Reflection::reflect_new_array(oop element_mirror, jint length, TRAPS) { | |
| 303 if (element_mirror == NULL) { | |
| 304 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 305 } | |
| 306 if (length < 0) { | |
| 307 THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); | |
| 308 } | |
| 309 if (java_lang_Class::is_primitive(element_mirror)) { | |
| 310 klassOop tak = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL); | |
| 311 return typeArrayKlass::cast(tak)->allocate(length, THREAD); | |
| 312 } else { | |
| 313 klassOop k = java_lang_Class::as_klassOop(element_mirror); | |
| 314 if (Klass::cast(k)->oop_is_array() && arrayKlass::cast(k)->dimension() >= MAX_DIM) { | |
| 315 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
| 316 } | |
| 317 return oopFactory::new_objArray(k, length, THREAD); | |
| 318 } | |
| 319 } | |
| 320 | |
| 321 | |
| 322 arrayOop Reflection::reflect_new_multi_array(oop element_mirror, typeArrayOop dim_array, TRAPS) { | |
| 323 assert(dim_array->is_typeArray(), "just checking"); | |
| 324 assert(typeArrayKlass::cast(dim_array->klass())->element_type() == T_INT, "just checking"); | |
| 325 | |
| 326 if (element_mirror == NULL) { | |
| 327 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 328 } | |
| 329 | |
| 330 int len = dim_array->length(); | |
| 331 if (len <= 0 || len > MAX_DIM) { | |
| 332 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
| 333 } | |
| 334 | |
| 335 jint dimensions[MAX_DIM]; // C array copy of intArrayOop | |
| 336 for (int i = 0; i < len; i++) { | |
| 337 int d = dim_array->int_at(i); | |
| 338 if (d < 0) { | |
| 339 THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); | |
| 340 } | |
| 341 dimensions[i] = d; | |
| 342 } | |
| 343 | |
| 344 klassOop klass; | |
| 345 int dim = len; | |
| 346 if (java_lang_Class::is_primitive(element_mirror)) { | |
| 347 klass = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL); | |
| 348 } else { | |
| 349 klass = java_lang_Class::as_klassOop(element_mirror); | |
| 350 if (Klass::cast(klass)->oop_is_array()) { | |
| 351 int k_dim = arrayKlass::cast(klass)->dimension(); | |
| 352 if (k_dim + len > MAX_DIM) { | |
| 353 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
| 354 } | |
| 355 dim += k_dim; | |
| 356 } | |
| 357 } | |
| 358 klass = Klass::cast(klass)->array_klass(dim, CHECK_NULL); | |
| 359 oop obj = arrayKlass::cast(klass)->multi_allocate(len, dimensions, THREAD); | |
| 360 assert(obj->is_array(), "just checking"); | |
| 361 return arrayOop(obj); | |
| 362 } | |
| 363 | |
| 364 | |
| 365 oop Reflection::array_component_type(oop mirror, TRAPS) { | |
| 366 if (java_lang_Class::is_primitive(mirror)) { | |
| 367 return NULL; | |
| 368 } | |
| 369 | |
| 370 klassOop klass = java_lang_Class::as_klassOop(mirror); | |
| 371 if (!Klass::cast(klass)->oop_is_array()) { | |
| 372 return NULL; | |
| 373 } | |
| 374 | |
| 375 oop result = arrayKlass::cast(klass)->component_mirror(); | |
| 376 #ifdef ASSERT | |
| 377 oop result2 = NULL; | |
| 378 if (arrayKlass::cast(klass)->dimension() == 1) { | |
| 379 if (Klass::cast(klass)->oop_is_typeArray()) { | |
| 380 result2 = basic_type_arrayklass_to_mirror(klass, CHECK_NULL); | |
| 381 } else { | |
| 382 result2 = Klass::cast(objArrayKlass::cast(klass)->element_klass())->java_mirror(); | |
| 383 } | |
| 384 } else { | |
| 385 klassOop lower_dim = arrayKlass::cast(klass)->lower_dimension(); | |
| 386 assert(Klass::cast(lower_dim)->oop_is_array(), "just checking"); | |
| 387 result2 = Klass::cast(lower_dim)->java_mirror(); | |
| 388 } | |
| 389 assert(result == result2, "results must be consistent"); | |
| 390 #endif //ASSERT | |
| 391 return result; | |
| 392 } | |
| 393 | |
| 394 | |
| 395 bool Reflection::reflect_check_access(klassOop field_class, AccessFlags acc, klassOop target_class, bool is_method_invoke, TRAPS) { | |
| 396 // field_class : declaring class | |
| 397 // acc : declared field access | |
| 398 // target_class : for protected | |
| 399 | |
| 400 // Check if field or method is accessible to client. Throw an | |
| 401 // IllegalAccessException and return false if not. | |
| 402 | |
| 403 // The "client" is the class associated with the nearest real frame | |
| 404 // getCallerClass already skips Method.invoke frames, so pass 0 in | |
| 405 // that case (same as classic). | |
| 406 ResourceMark rm(THREAD); | |
| 407 assert(THREAD->is_Java_thread(), "sanity check"); | |
| 408 klassOop client_class = ((JavaThread *)THREAD)->security_get_caller_class(is_method_invoke ? 0 : 1); | |
| 409 | |
| 410 if (client_class != field_class) { | |
| 411 if (!verify_class_access(client_class, field_class, false) | |
| 412 || !verify_field_access(client_class, | |
| 413 field_class, | |
| 414 field_class, | |
| 415 acc, | |
| 416 false)) { | |
| 417 THROW_(vmSymbols::java_lang_IllegalAccessException(), false); | |
| 418 } | |
| 419 } | |
| 420 | |
| 421 // Additional test for protected members: JLS 6.6.2 | |
| 422 | |
| 423 if (acc.is_protected()) { | |
| 424 if (target_class != client_class) { | |
| 425 if (!is_same_class_package(client_class, field_class)) { | |
| 426 if (!Klass::cast(target_class)->is_subclass_of(client_class)) { | |
| 427 THROW_(vmSymbols::java_lang_IllegalAccessException(), false); | |
| 428 } | |
| 429 } | |
| 430 } | |
| 431 } | |
| 432 | |
| 433 // Passed all tests | |
| 434 return true; | |
| 435 } | |
| 436 | |
| 437 | |
| 438 bool Reflection::verify_class_access(klassOop current_class, klassOop new_class, bool classloader_only) { | |
| 439 // Verify that current_class can access new_class. If the classloader_only | |
| 440 // flag is set, we automatically allow any accesses in which current_class | |
| 441 // doesn't have a classloader. | |
| 442 if ((current_class == NULL) || | |
| 443 (current_class == new_class) || | |
| 444 (instanceKlass::cast(new_class)->is_public()) || | |
| 445 is_same_class_package(current_class, new_class)) { | |
| 446 return true; | |
| 447 } | |
| 448 // New (1.4) reflection implementation. Allow all accesses from | |
| 449 // sun/reflect/MagicAccessorImpl subclasses to succeed trivially. | |
| 450 if ( JDK_Version::is_gte_jdk14x_version() | |
| 451 && UseNewReflection | |
| 452 && Klass::cast(current_class)->is_subclass_of(SystemDictionary::reflect_magic_klass())) { | |
| 453 return true; | |
| 454 } | |
| 455 | |
| 456 return can_relax_access_check_for(current_class, new_class, classloader_only); | |
| 457 } | |
| 458 | |
| 459 bool Reflection::can_relax_access_check_for( | |
| 460 klassOop accessor, klassOop accessee, bool classloader_only) { | |
| 461 instanceKlass* accessor_ik = instanceKlass::cast(accessor); | |
| 462 instanceKlass* accessee_ik = instanceKlass::cast(accessee); | |
| 463 if (RelaxAccessControlCheck || | |
| 464 (accessor_ik->major_version() < JAVA_1_5_VERSION && | |
| 465 accessee_ik->major_version() < JAVA_1_5_VERSION)) { | |
| 466 return classloader_only && | |
| 467 Verifier::relax_verify_for(accessor_ik->class_loader()) && | |
| 468 accessor_ik->protection_domain() == accessee_ik->protection_domain() && | |
| 469 accessor_ik->class_loader() == accessee_ik->class_loader(); | |
| 470 } else { | |
| 471 return false; | |
| 472 } | |
| 473 } | |
| 474 | |
| 475 bool Reflection::verify_field_access(klassOop current_class, | |
| 476 klassOop resolved_class, | |
| 477 klassOop field_class, | |
| 478 AccessFlags access, | |
| 479 bool classloader_only, | |
| 480 bool protected_restriction) { | |
| 481 // Verify that current_class can access a field of field_class, where that | |
| 482 // field's access bits are "access". We assume that we've already verified | |
| 483 // that current_class can access field_class. | |
| 484 // | |
| 485 // If the classloader_only flag is set, we automatically allow any accesses | |
| 486 // in which current_class doesn't have a classloader. | |
| 487 // | |
| 488 // "resolved_class" is the runtime type of "field_class". Sometimes we don't | |
| 489 // need this distinction (e.g. if all we have is the runtime type, or during | |
| 490 // class file parsing when we only care about the static type); in that case | |
| 491 // callers should ensure that resolved_class == field_class. | |
| 492 // | |
| 493 if ((current_class == NULL) || | |
| 494 (current_class == field_class) || | |
| 495 access.is_public()) { | |
| 496 return true; | |
| 497 } | |
| 498 | |
| 499 if (access.is_protected()) { | |
| 500 if (!protected_restriction) { | |
| 501 // See if current_class is a subclass of field_class | |
| 502 if (Klass::cast(current_class)->is_subclass_of(field_class)) { | |
| 503 if (current_class == resolved_class || | |
| 504 field_class == resolved_class || | |
| 505 Klass::cast(current_class)->is_subclass_of(resolved_class) || | |
| 506 Klass::cast(resolved_class)->is_subclass_of(current_class)) { | |
| 507 return true; | |
| 508 } | |
| 509 } | |
| 510 } | |
| 511 } | |
| 512 | |
| 513 if (!access.is_private() && is_same_class_package(current_class, field_class)) { | |
| 514 return true; | |
| 515 } | |
| 516 | |
| 517 // New (1.4) reflection implementation. Allow all accesses from | |
| 518 // sun/reflect/MagicAccessorImpl subclasses to succeed trivially. | |
| 519 if ( JDK_Version::is_gte_jdk14x_version() | |
| 520 && UseNewReflection | |
| 521 && Klass::cast(current_class)->is_subclass_of(SystemDictionary::reflect_magic_klass())) { | |
| 522 return true; | |
| 523 } | |
| 524 | |
| 525 return can_relax_access_check_for( | |
| 526 current_class, field_class, classloader_only); | |
| 527 } | |
| 528 | |
| 529 | |
| 530 bool Reflection::is_same_class_package(klassOop class1, klassOop class2) { | |
| 531 return instanceKlass::cast(class1)->is_same_class_package(class2); | |
| 532 } | |
| 533 | |
| 534 | |
| 535 // Checks that the 'outer' klass has declared 'inner' as being an inner klass. If not, | |
| 536 // throw an incompatible class change exception | |
| 537 void Reflection::check_for_inner_class(instanceKlassHandle outer, instanceKlassHandle inner, TRAPS) { | |
| 538 const int inner_class_info_index = 0; | |
| 539 const int outer_class_info_index = 1; | |
| 540 | |
| 541 typeArrayHandle icls (THREAD, outer->inner_classes()); | |
| 542 constantPoolHandle cp (THREAD, outer->constants()); | |
| 543 for(int i = 0; i < icls->length(); i += 4) { | |
| 544 int ioff = icls->ushort_at(i + inner_class_info_index); | |
| 545 int ooff = icls->ushort_at(i + outer_class_info_index); | |
| 546 | |
| 547 if (ioff != 0 && ooff != 0) { | |
| 548 klassOop o = cp->klass_at(ooff, CHECK); | |
| 549 if (o == outer()) { | |
| 550 klassOop i = cp->klass_at(ioff, CHECK); | |
| 551 if (i == inner()) { | |
| 552 return; | |
| 553 } | |
| 554 } | |
| 555 } | |
| 556 } | |
| 557 | |
| 558 // 'inner' not declared as an inner klass in outer | |
| 559 ResourceMark rm(THREAD); | |
| 560 Exceptions::fthrow( | |
| 561 THREAD_AND_LOCATION, | |
| 562 vmSymbolHandles::java_lang_IncompatibleClassChangeError(), | |
| 563 "%s and %s disagree on InnerClasses attribute", | |
| 564 outer->external_name(), | |
| 565 inner->external_name() | |
| 566 ); | |
| 567 } | |
| 568 | |
| 569 // Utility method converting a single SignatureStream element into java.lang.Class instance | |
| 570 | |
| 571 oop get_mirror_from_signature(methodHandle method, SignatureStream* ss, TRAPS) { | |
| 572 switch (ss->type()) { | |
| 573 default: | |
| 574 assert(ss->type() != T_VOID || ss->at_return_type(), "T_VOID should only appear as return type"); | |
| 575 return java_lang_Class::primitive_mirror(ss->type()); | |
| 576 case T_OBJECT: | |
| 577 case T_ARRAY: | |
| 578 symbolOop name = ss->as_symbol(CHECK_NULL); | |
| 579 oop loader = instanceKlass::cast(method->method_holder())->class_loader(); | |
| 580 oop protection_domain = instanceKlass::cast(method->method_holder())->protection_domain(); | |
| 581 klassOop k = SystemDictionary::resolve_or_fail( | |
| 582 symbolHandle(THREAD, name), | |
| 583 Handle(THREAD, loader), | |
| 584 Handle(THREAD, protection_domain), | |
| 585 true, CHECK_NULL); | |
| 586 if (TraceClassResolution) { | |
| 587 trace_class_resolution(k); | |
| 588 } | |
| 589 return k->klass_part()->java_mirror(); | |
| 590 }; | |
| 591 } | |
| 592 | |
| 593 | |
| 594 objArrayHandle Reflection::get_parameter_types(methodHandle method, int parameter_count, oop* return_type, TRAPS) { | |
| 595 // Allocate array holding parameter types (java.lang.Class instances) | |
| 596 objArrayOop m = oopFactory::new_objArray(SystemDictionary::class_klass(), parameter_count, CHECK_(objArrayHandle())); | |
| 597 objArrayHandle mirrors (THREAD, m); | |
| 598 int index = 0; | |
| 599 // Collect parameter types | |
| 600 symbolHandle signature (THREAD, method->signature()); | |
| 601 SignatureStream ss(signature); | |
| 602 while (!ss.at_return_type()) { | |
| 603 oop mirror = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle())); | |
| 604 mirrors->obj_at_put(index++, mirror); | |
| 605 ss.next(); | |
| 606 } | |
| 607 assert(index == parameter_count, "invalid parameter count"); | |
| 608 if (return_type != NULL) { | |
| 609 // Collect return type as well | |
| 610 assert(ss.at_return_type(), "return type should be present"); | |
| 611 *return_type = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle())); | |
| 612 } | |
| 613 return mirrors; | |
| 614 } | |
| 615 | |
| 616 objArrayHandle Reflection::get_exception_types(methodHandle method, TRAPS) { | |
| 617 return method->resolved_checked_exceptions(CHECK_(objArrayHandle())); | |
| 618 } | |
| 619 | |
| 620 | |
| 621 Handle Reflection::new_type(symbolHandle signature, KlassHandle k, TRAPS) { | |
| 622 // Basic types | |
| 623 BasicType type = vmSymbols::signature_type(signature()); | |
| 624 if (type != T_OBJECT) { | |
| 625 return Handle(THREAD, Universe::java_mirror(type)); | |
| 626 } | |
| 627 | |
| 628 oop loader = instanceKlass::cast(k())->class_loader(); | |
| 629 oop protection_domain = Klass::cast(k())->protection_domain(); | |
| 630 klassOop result = SystemDictionary::resolve_or_fail(signature, | |
| 631 Handle(THREAD, loader), | |
| 632 Handle(THREAD, protection_domain), | |
| 633 true, CHECK_(Handle())); | |
| 634 | |
| 635 if (TraceClassResolution) { | |
| 636 trace_class_resolution(result); | |
| 637 } | |
| 638 | |
| 639 oop nt = Klass::cast(result)->java_mirror(); | |
| 640 return Handle(THREAD, nt); | |
| 641 } | |
| 642 | |
| 643 | |
| 644 oop Reflection::new_method(methodHandle method, bool intern_name, bool for_constant_pool_access, TRAPS) { | |
| 645 // In jdk1.2.x, getMethods on an interface erroneously includes <clinit>, thus the complicated assert. | |
| 646 // Also allow sun.reflect.ConstantPool to refer to <clinit> methods as java.lang.reflect.Methods. | |
| 647 assert(!method()->is_initializer() || | |
| 648 (for_constant_pool_access && method()->is_static()) || | |
| 649 (method()->name() == vmSymbols::class_initializer_name() | |
| 650 && Klass::cast(method()->method_holder())->is_interface() && JDK_Version::is_jdk12x_version()), "should call new_constructor instead"); | |
| 651 instanceKlassHandle holder (THREAD, method->method_holder()); | |
| 652 int slot = method->method_idnum(); | |
| 653 | |
| 654 symbolHandle signature (THREAD, method->signature()); | |
| 655 int parameter_count = ArgumentCount(signature).size(); | |
| 656 oop return_type_oop = NULL; | |
| 657 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, &return_type_oop, CHECK_NULL); | |
| 658 if (parameter_types.is_null() || return_type_oop == NULL) return NULL; | |
| 659 | |
| 660 Handle return_type(THREAD, return_type_oop); | |
| 661 | |
| 662 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL); | |
| 663 | |
| 664 if (exception_types.is_null()) return NULL; | |
| 665 | |
| 666 symbolHandle method_name(THREAD, method->name()); | |
| 667 Handle name; | |
| 668 if (intern_name) { | |
| 669 // intern_name is only true with UseNewReflection | |
| 670 oop name_oop = StringTable::intern(method_name(), CHECK_NULL); | |
| 671 name = Handle(THREAD, name_oop); | |
| 672 } else { | |
| 673 name = java_lang_String::create_from_symbol(method_name, CHECK_NULL); | |
| 674 } | |
| 675 if (name.is_null()) return NULL; | |
| 676 | |
| 677 int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 678 | |
| 679 Handle mh = java_lang_reflect_Method::create(CHECK_NULL); | |
| 680 | |
| 681 java_lang_reflect_Method::set_clazz(mh(), holder->java_mirror()); | |
| 682 java_lang_reflect_Method::set_slot(mh(), slot); | |
| 683 java_lang_reflect_Method::set_name(mh(), name()); | |
| 684 java_lang_reflect_Method::set_return_type(mh(), return_type()); | |
| 685 java_lang_reflect_Method::set_parameter_types(mh(), parameter_types()); | |
| 686 java_lang_reflect_Method::set_exception_types(mh(), exception_types()); | |
| 687 java_lang_reflect_Method::set_modifiers(mh(), modifiers); | |
| 688 java_lang_reflect_Method::set_override(mh(), false); | |
| 689 if (java_lang_reflect_Method::has_signature_field() && | |
| 690 method->generic_signature() != NULL) { | |
| 691 symbolHandle gs(THREAD, method->generic_signature()); | |
| 692 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); | |
| 693 java_lang_reflect_Method::set_signature(mh(), sig()); | |
| 694 } | |
| 695 if (java_lang_reflect_Method::has_annotations_field()) { | |
| 696 java_lang_reflect_Method::set_annotations(mh(), method->annotations()); | |
| 697 } | |
| 698 if (java_lang_reflect_Method::has_parameter_annotations_field()) { | |
| 699 java_lang_reflect_Method::set_parameter_annotations(mh(), method->parameter_annotations()); | |
| 700 } | |
| 701 if (java_lang_reflect_Method::has_annotation_default_field()) { | |
| 702 java_lang_reflect_Method::set_annotation_default(mh(), method->annotation_default()); | |
| 703 } | |
| 704 return mh(); | |
| 705 } | |
| 706 | |
| 707 | |
| 708 oop Reflection::new_constructor(methodHandle method, TRAPS) { | |
| 709 assert(method()->is_initializer(), "should call new_method instead"); | |
| 710 | |
| 711 instanceKlassHandle holder (THREAD, method->method_holder()); | |
| 712 int slot = method->method_idnum(); | |
| 713 | |
| 714 symbolHandle signature (THREAD, method->signature()); | |
| 715 int parameter_count = ArgumentCount(signature).size(); | |
| 716 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, NULL, CHECK_NULL); | |
| 717 if (parameter_types.is_null()) return NULL; | |
| 718 | |
| 719 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL); | |
| 720 if (exception_types.is_null()) return NULL; | |
| 721 | |
| 722 int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 723 | |
| 724 Handle ch = java_lang_reflect_Constructor::create(CHECK_NULL); | |
| 725 | |
| 726 java_lang_reflect_Constructor::set_clazz(ch(), holder->java_mirror()); | |
| 727 java_lang_reflect_Constructor::set_slot(ch(), slot); | |
| 728 java_lang_reflect_Constructor::set_parameter_types(ch(), parameter_types()); | |
| 729 java_lang_reflect_Constructor::set_exception_types(ch(), exception_types()); | |
| 730 java_lang_reflect_Constructor::set_modifiers(ch(), modifiers); | |
| 731 java_lang_reflect_Constructor::set_override(ch(), false); | |
| 732 if (java_lang_reflect_Constructor::has_signature_field() && | |
| 733 method->generic_signature() != NULL) { | |
| 734 symbolHandle gs(THREAD, method->generic_signature()); | |
| 735 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); | |
| 736 java_lang_reflect_Constructor::set_signature(ch(), sig()); | |
| 737 } | |
| 738 if (java_lang_reflect_Constructor::has_annotations_field()) { | |
| 739 java_lang_reflect_Constructor::set_annotations(ch(), method->annotations()); | |
| 740 } | |
| 741 if (java_lang_reflect_Constructor::has_parameter_annotations_field()) { | |
| 742 java_lang_reflect_Constructor::set_parameter_annotations(ch(), method->parameter_annotations()); | |
| 743 } | |
| 744 return ch(); | |
| 745 } | |
| 746 | |
| 747 | |
| 748 oop Reflection::new_field(fieldDescriptor* fd, bool intern_name, TRAPS) { | |
| 749 symbolHandle field_name(THREAD, fd->name()); | |
| 750 Handle name; | |
| 751 if (intern_name) { | |
| 752 // intern_name is only true with UseNewReflection | |
| 753 oop name_oop = StringTable::intern(field_name(), CHECK_NULL); | |
| 754 name = Handle(THREAD, name_oop); | |
| 755 } else { | |
| 756 name = java_lang_String::create_from_symbol(field_name, CHECK_NULL); | |
| 757 } | |
| 758 symbolHandle signature (THREAD, fd->signature()); | |
| 759 KlassHandle holder (THREAD, fd->field_holder()); | |
| 760 Handle type = new_type(signature, holder, CHECK_NULL); | |
| 761 Handle rh = java_lang_reflect_Field::create(CHECK_NULL); | |
| 762 | |
| 763 java_lang_reflect_Field::set_clazz(rh(), Klass::cast(fd->field_holder())->java_mirror()); | |
| 764 java_lang_reflect_Field::set_slot(rh(), fd->index()); | |
| 765 java_lang_reflect_Field::set_name(rh(), name()); | |
| 766 java_lang_reflect_Field::set_type(rh(), type()); | |
| 767 // Note the ACC_ANNOTATION bit, which is a per-class access flag, is never set here. | |
| 768 java_lang_reflect_Field::set_modifiers(rh(), fd->access_flags().as_int() & JVM_RECOGNIZED_FIELD_MODIFIERS); | |
| 769 java_lang_reflect_Field::set_override(rh(), false); | |
| 770 if (java_lang_reflect_Field::has_signature_field() && | |
| 771 fd->generic_signature() != NULL) { | |
| 772 symbolHandle gs(THREAD, fd->generic_signature()); | |
| 773 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); | |
| 774 java_lang_reflect_Field::set_signature(rh(), sig()); | |
| 775 } | |
| 776 if (java_lang_reflect_Field::has_annotations_field()) { | |
| 777 java_lang_reflect_Field::set_annotations(rh(), fd->annotations()); | |
| 778 } | |
| 779 return rh(); | |
| 780 } | |
| 781 | |
| 782 | |
| 783 //--------------------------------------------------------------------------- | |
| 784 // | |
| 785 // Supporting routines for old native code-based reflection (pre-JDK 1.4). | |
| 786 // | |
| 787 // See reflection.hpp for details. | |
| 788 // | |
| 789 //--------------------------------------------------------------------------- | |
| 790 | |
| 791 #ifdef SUPPORT_OLD_REFLECTION | |
| 792 | |
| 793 methodHandle Reflection::resolve_interface_call(instanceKlassHandle klass, methodHandle method, | |
| 794 KlassHandle recv_klass, Handle receiver, TRAPS) { | |
| 795 assert(!method.is_null() , "method should not be null"); | |
| 796 | |
| 797 CallInfo info; | |
| 798 symbolHandle signature (THREAD, method->signature()); | |
| 799 symbolHandle name (THREAD, method->name()); | |
| 800 LinkResolver::resolve_interface_call(info, receiver, recv_klass, klass, | |
| 801 name, signature, | |
| 802 KlassHandle(), false, true, | |
| 803 CHECK_(methodHandle())); | |
| 804 return info.selected_method(); | |
| 805 } | |
| 806 | |
| 807 | |
| 808 oop Reflection::invoke(instanceKlassHandle klass, methodHandle reflected_method, | |
| 809 Handle receiver, bool override, objArrayHandle ptypes, | |
| 810 BasicType rtype, objArrayHandle args, bool is_method_invoke, TRAPS) { | |
| 811 ResourceMark rm(THREAD); | |
| 812 | |
| 813 methodHandle method; // actual method to invoke | |
| 814 KlassHandle target_klass; // target klass, receiver's klass for non-static | |
| 815 | |
| 816 // Ensure klass is initialized | |
| 817 klass->initialize(CHECK_NULL); | |
| 818 | |
| 819 bool is_static = reflected_method->is_static(); | |
| 820 if (is_static) { | |
| 821 // ignore receiver argument | |
| 822 method = reflected_method; | |
| 823 target_klass = klass; | |
| 824 } else { | |
| 825 // check for null receiver | |
| 826 if (receiver.is_null()) { | |
| 827 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 828 } | |
| 829 // Check class of receiver against class declaring method | |
| 830 if (!receiver->is_a(klass())) { | |
| 831 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "object is not an instance of declaring class"); | |
| 832 } | |
| 833 // target klass is receiver's klass | |
| 834 target_klass = KlassHandle(THREAD, receiver->klass()); | |
| 835 // no need to resolve if method is private or <init> | |
| 836 if (reflected_method->is_private() || reflected_method->name() == vmSymbols::object_initializer_name()) { | |
| 837 method = reflected_method; | |
| 838 } else { | |
| 839 // resolve based on the receiver | |
| 840 if (instanceKlass::cast(reflected_method->method_holder())->is_interface()) { | |
| 841 // resolve interface call | |
| 842 if (ReflectionWrapResolutionErrors) { | |
| 843 // new default: 6531596 | |
| 844 // Match resolution errors with those thrown due to reflection inlining | |
| 845 // Linktime resolution & IllegalAccessCheck already done by Class.getMethod() | |
| 846 method = resolve_interface_call(klass, reflected_method, target_klass, receiver, THREAD); | |
| 847 if (HAS_PENDING_EXCEPTION) { | |
| 848 // Method resolution threw an exception; wrap it in an InvocationTargetException | |
| 849 oop resolution_exception = PENDING_EXCEPTION; | |
| 850 CLEAR_PENDING_EXCEPTION; | |
| 851 JavaCallArguments args(Handle(THREAD, resolution_exception)); | |
| 852 THROW_ARG_0(vmSymbolHandles::java_lang_reflect_InvocationTargetException(), | |
| 853 vmSymbolHandles::throwable_void_signature(), | |
| 854 &args); | |
| 855 } | |
| 856 } else { | |
| 857 method = resolve_interface_call(klass, reflected_method, target_klass, receiver, CHECK_(NULL)); | |
| 858 } | |
| 859 } else { | |
| 860 // if the method can be overridden, we resolve using the vtable index. | |
| 861 int index = reflected_method->vtable_index(); | |
| 862 method = reflected_method; | |
| 863 if (index != methodOopDesc::nonvirtual_vtable_index) { | |
| 864 // target_klass might be an arrayKlassOop but all vtables start at | |
| 865 // the same place. The cast is to avoid virtual call and assertion. | |
| 866 instanceKlass* inst = (instanceKlass*)target_klass()->klass_part(); | |
| 867 method = methodHandle(THREAD, inst->method_at_vtable(index)); | |
| 868 } | |
| 869 if (!method.is_null()) { | |
| 870 // Check for abstract methods as well | |
| 871 if (method->is_abstract()) { | |
| 872 // new default: 6531596 | |
| 873 if (ReflectionWrapResolutionErrors) { | |
| 874 ResourceMark rm(THREAD); | |
| 875 Handle h_origexception = Exceptions::new_exception(THREAD, | |
| 876 vmSymbols::java_lang_AbstractMethodError(), | |
| 877 methodOopDesc::name_and_sig_as_C_string(Klass::cast(target_klass()), | |
| 878 method->name(), | |
| 879 method->signature())); | |
| 880 JavaCallArguments args(h_origexception); | |
| 881 THROW_ARG_0(vmSymbolHandles::java_lang_reflect_InvocationTargetException(), | |
| 882 vmSymbolHandles::throwable_void_signature(), | |
| 883 &args); | |
| 884 } else { | |
| 885 ResourceMark rm(THREAD); | |
| 886 THROW_MSG_0(vmSymbols::java_lang_AbstractMethodError(), | |
| 887 methodOopDesc::name_and_sig_as_C_string(Klass::cast(target_klass()), | |
| 888 method->name(), | |
| 889 method->signature())); | |
| 890 } | |
| 891 } | |
| 892 } | |
| 893 } | |
| 894 } | |
| 895 } | |
| 896 | |
| 897 // I believe this is a ShouldNotGetHere case which requires | |
| 898 // an internal vtable bug. If you ever get this please let Karen know. | |
| 899 if (method.is_null()) { | |
| 900 ResourceMark rm(THREAD); | |
| 901 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
| 902 methodOopDesc::name_and_sig_as_C_string(Klass::cast(klass()), | |
| 903 reflected_method->name(), | |
| 904 reflected_method->signature())); | |
| 905 } | |
| 906 | |
| 907 // In the JDK 1.4 reflection implementation, the security check is | |
| 908 // done at the Java level | |
| 909 if (!(JDK_Version::is_gte_jdk14x_version() && UseNewReflection)) { | |
| 910 | |
| 911 // Access checking (unless overridden by Method) | |
| 912 if (!override) { | |
| 913 if (!(klass->is_public() && reflected_method->is_public())) { | |
| 914 bool access = Reflection::reflect_check_access(klass(), reflected_method->access_flags(), target_klass(), is_method_invoke, CHECK_NULL); | |
| 915 if (!access) { | |
| 916 return NULL; // exception | |
| 917 } | |
| 918 } | |
| 919 } | |
| 920 | |
| 921 } // !(Universe::is_gte_jdk14x_version() && UseNewReflection) | |
| 922 | |
| 923 assert(ptypes->is_objArray(), "just checking"); | |
| 924 int args_len = args.is_null() ? 0 : args->length(); | |
| 925 // Check number of arguments | |
| 926 if (ptypes->length() != args_len) { | |
| 927 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "wrong number of arguments"); | |
| 928 } | |
| 929 | |
| 930 // Create object to contain parameters for the JavaCall | |
| 931 JavaCallArguments java_args(method->size_of_parameters()); | |
| 932 | |
| 933 if (!is_static) { | |
| 934 java_args.push_oop(receiver); | |
| 935 } | |
| 936 | |
| 937 for (int i = 0; i < args_len; i++) { | |
| 938 oop type_mirror = ptypes->obj_at(i); | |
| 939 oop arg = args->obj_at(i); | |
| 940 if (java_lang_Class::is_primitive(type_mirror)) { | |
| 941 jvalue value; | |
| 942 BasicType ptype = basic_type_mirror_to_basic_type(type_mirror, CHECK_NULL); | |
| 943 BasicType atype = unbox_for_primitive(arg, &value, CHECK_NULL); | |
| 944 if (ptype != atype) { | |
| 945 widen(&value, atype, ptype, CHECK_NULL); | |
| 946 } | |
| 947 switch (ptype) { | |
| 948 case T_BOOLEAN: java_args.push_int(value.z); break; | |
| 949 case T_CHAR: java_args.push_int(value.c); break; | |
| 950 case T_BYTE: java_args.push_int(value.b); break; | |
| 951 case T_SHORT: java_args.push_int(value.s); break; | |
| 952 case T_INT: java_args.push_int(value.i); break; | |
| 953 case T_LONG: java_args.push_long(value.j); break; | |
| 954 case T_FLOAT: java_args.push_float(value.f); break; | |
| 955 case T_DOUBLE: java_args.push_double(value.d); break; | |
| 956 default: | |
| 957 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
| 958 } | |
| 959 } else { | |
| 960 if (arg != NULL) { | |
| 961 klassOop k = java_lang_Class::as_klassOop(type_mirror); | |
| 962 if (!arg->is_a(k)) { | |
| 963 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
| 964 } | |
| 965 } | |
| 966 Handle arg_handle(THREAD, arg); // Create handle for argument | |
| 967 java_args.push_oop(arg_handle); // Push handle | |
| 968 } | |
| 969 } | |
| 970 | |
| 971 assert(java_args.size_of_parameters() == method->size_of_parameters(), "just checking"); | |
| 972 | |
| 973 // All oops (including receiver) is passed in as Handles. An potential oop is returned as an | |
| 974 // oop (i.e., NOT as an handle) | |
| 975 JavaValue result(rtype); | |
| 976 JavaCalls::call(&result, method, &java_args, THREAD); | |
| 977 | |
| 978 if (HAS_PENDING_EXCEPTION) { | |
| 979 // Method threw an exception; wrap it in an InvocationTargetException | |
| 980 oop target_exception = PENDING_EXCEPTION; | |
| 981 CLEAR_PENDING_EXCEPTION; | |
| 982 JavaCallArguments args(Handle(THREAD, target_exception)); | |
| 983 THROW_ARG_0(vmSymbolHandles::java_lang_reflect_InvocationTargetException(), | |
| 984 vmSymbolHandles::throwable_void_signature(), | |
| 985 &args); | |
| 986 } else { | |
| 987 if (rtype == T_BOOLEAN || rtype == T_BYTE || rtype == T_CHAR || rtype == T_SHORT) | |
| 988 narrow((jvalue*) result.get_value_addr(), rtype, CHECK_NULL); | |
| 989 return box((jvalue*) result.get_value_addr(), rtype, CHECK_NULL); | |
| 990 } | |
| 991 } | |
| 992 | |
| 993 | |
| 994 void Reflection::narrow(jvalue* value, BasicType narrow_type, TRAPS) { | |
| 995 switch (narrow_type) { | |
| 996 case T_BOOLEAN: | |
| 997 value->z = (jboolean) value->i; | |
| 998 return; | |
| 999 case T_BYTE: | |
| 1000 value->b = (jbyte) value->i; | |
| 1001 return; | |
| 1002 case T_CHAR: | |
| 1003 value->c = (jchar) value->i; | |
| 1004 return; | |
| 1005 case T_SHORT: | |
| 1006 value->s = (jshort) value->i; | |
| 1007 return; | |
| 1008 default: | |
| 1009 break; // fail | |
| 1010 } | |
| 1011 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
| 1012 } | |
| 1013 | |
| 1014 | |
| 1015 BasicType Reflection::basic_type_mirror_to_basic_type(oop basic_type_mirror, TRAPS) { | |
| 1016 assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking"); | |
| 1017 return java_lang_Class::primitive_type(basic_type_mirror); | |
| 1018 } | |
| 1019 | |
| 1020 | |
| 1021 bool Reflection::match_parameter_types(methodHandle method, objArrayHandle types, int parameter_count, TRAPS) { | |
| 1022 int types_len = types.is_null() ? 0 : types->length(); | |
| 1023 if (types_len != parameter_count) return false; | |
| 1024 if (parameter_count > 0) { | |
| 1025 objArrayHandle method_types = get_parameter_types(method, parameter_count, NULL, CHECK_false); | |
| 1026 for (int index = 0; index < parameter_count; index++) { | |
| 1027 if (types->obj_at(index) != method_types->obj_at(index)) { | |
| 1028 return false; | |
| 1029 } | |
| 1030 } | |
| 1031 } | |
| 1032 return true; | |
| 1033 } | |
| 1034 | |
| 1035 | |
| 1036 oop Reflection::new_field(FieldStream* st, TRAPS) { | |
| 1037 symbolHandle field_name(THREAD, st->name()); | |
| 1038 Handle name = java_lang_String::create_from_symbol(field_name, CHECK_NULL); | |
| 1039 symbolHandle signature(THREAD, st->signature()); | |
| 1040 Handle type = new_type(signature, st->klass(), CHECK_NULL); | |
| 1041 Handle rh = java_lang_reflect_Field::create(CHECK_NULL); | |
| 1042 oop result = rh(); | |
| 1043 | |
| 1044 java_lang_reflect_Field::set_clazz(result, st->klass()->java_mirror()); | |
| 1045 java_lang_reflect_Field::set_slot(result, st->index()); | |
| 1046 java_lang_reflect_Field::set_name(result, name()); | |
| 1047 java_lang_reflect_Field::set_type(result, type()); | |
| 1048 // Note the ACC_ANNOTATION bit, which is a per-class access flag, is never set here. | |
| 1049 java_lang_reflect_Field::set_modifiers(result, st->access_flags().as_int() & JVM_RECOGNIZED_FIELD_MODIFIERS); | |
| 1050 java_lang_reflect_Field::set_override(result, false); | |
| 1051 return result; | |
| 1052 } | |
| 1053 | |
| 1054 | |
| 1055 bool Reflection::resolve_field(Handle field_mirror, Handle& receiver, fieldDescriptor* fd, bool check_final, TRAPS) { | |
| 1056 if (field_mirror.is_null()) { | |
| 1057 THROW_(vmSymbols::java_lang_NullPointerException(), false); | |
| 1058 } | |
| 1059 | |
| 1060 instanceKlassHandle klass (THREAD, java_lang_Class::as_klassOop(java_lang_reflect_Field::clazz(field_mirror()))); | |
| 1061 int slot = java_lang_reflect_Field::slot(field_mirror()); | |
| 1062 | |
| 1063 // Ensure klass is initialized | |
| 1064 klass->initialize(CHECK_false); | |
| 1065 fd->initialize(klass(), slot); | |
| 1066 | |
| 1067 bool is_static = fd->is_static(); | |
| 1068 KlassHandle receiver_klass; | |
| 1069 | |
| 1070 if (is_static) { | |
| 1071 receiver = KlassHandle(THREAD, klass()); | |
| 1072 receiver_klass = klass; | |
| 1073 } else { | |
| 1074 // Check object is a non-null instance of declaring class | |
| 1075 if (receiver.is_null()) { | |
| 1076 THROW_(vmSymbols::java_lang_NullPointerException(), false); | |
| 1077 } | |
| 1078 if (!receiver->is_a(klass())) { | |
| 1079 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), "object is not an instance of declaring class", false); | |
| 1080 } | |
| 1081 receiver_klass = KlassHandle(THREAD, receiver->klass()); | |
| 1082 } | |
| 1083 | |
| 1084 // Access checking (unless overridden by Field) | |
| 1085 if (!java_lang_reflect_Field::override(field_mirror())) { | |
| 1086 if (!(klass->is_public() && fd->is_public())) { | |
| 1087 bool access_check = reflect_check_access(klass(), fd->access_flags(), receiver_klass(), false, CHECK_false); | |
| 1088 if (!access_check) { | |
| 1089 return false; // exception | |
| 1090 } | |
| 1091 } | |
| 1092 } | |
| 1093 | |
| 1094 if (check_final && fd->is_final()) { | |
| 1095 // In 1.3 we always throw an error when attempting to set a final field. | |
| 1096 // In 1.2.x, this was allowed in the override bit was set by calling Field.setAccessible(true). | |
| 1097 // We currently maintain backwards compatibility. See bug 4250960. | |
| 1098 bool strict_final_check = !JDK_Version::is_jdk12x_version(); | |
| 1099 if (strict_final_check || !java_lang_reflect_Field::override(field_mirror())) { | |
| 1100 THROW_MSG_(vmSymbols::java_lang_IllegalAccessException(), "field is final", false); | |
| 1101 } | |
| 1102 } | |
| 1103 return true; | |
| 1104 } | |
| 1105 | |
| 1106 | |
| 1107 BasicType Reflection::field_get(jvalue* value, fieldDescriptor* fd, Handle receiver) { | |
| 1108 BasicType field_type = fd->field_type(); | |
| 1109 int offset = fd->offset(); | |
| 1110 switch (field_type) { | |
| 1111 case T_BOOLEAN: | |
| 1112 value->z = receiver->bool_field(offset); | |
| 1113 break; | |
| 1114 case T_CHAR: | |
| 1115 value->c = receiver->char_field(offset); | |
| 1116 break; | |
| 1117 case T_FLOAT: | |
| 1118 value->f = receiver->float_field(offset); | |
| 1119 break; | |
| 1120 case T_DOUBLE: | |
| 1121 value->d = receiver->double_field(offset); | |
| 1122 break; | |
| 1123 case T_BYTE: | |
| 1124 value->b = receiver->byte_field(offset); | |
| 1125 break; | |
| 1126 case T_SHORT: | |
| 1127 value->s = receiver->short_field(offset); | |
| 1128 break; | |
| 1129 case T_INT: | |
| 1130 value->i = receiver->int_field(offset); | |
| 1131 break; | |
| 1132 case T_LONG: | |
| 1133 value->j = receiver->long_field(offset); | |
| 1134 break; | |
| 1135 case T_OBJECT: | |
| 1136 case T_ARRAY: | |
| 1137 value->l = (jobject) receiver->obj_field(offset); | |
| 1138 break; | |
| 1139 default: | |
| 1140 return T_ILLEGAL; | |
| 1141 } | |
| 1142 return field_type; | |
| 1143 } | |
| 1144 | |
| 1145 | |
| 1146 void Reflection::field_set(jvalue* value, fieldDescriptor* fd, Handle receiver, BasicType value_type, TRAPS) { | |
| 1147 BasicType field_type = fd->field_type(); | |
| 1148 if (field_type != value_type) { | |
| 1149 widen(value, value_type, field_type, CHECK); | |
| 1150 } | |
| 1151 | |
| 1152 int offset = fd->offset(); | |
| 1153 switch (field_type) { | |
| 1154 case T_BOOLEAN: | |
| 1155 receiver->bool_field_put(offset, value->z); | |
| 1156 break; | |
| 1157 case T_CHAR: | |
| 1158 receiver->char_field_put(offset, value->c); | |
| 1159 break; | |
| 1160 case T_FLOAT: | |
| 1161 receiver->float_field_put(offset, value->f); | |
| 1162 break; | |
| 1163 case T_DOUBLE: | |
| 1164 receiver->double_field_put(offset, value->d); | |
| 1165 break; | |
| 1166 case T_BYTE: | |
| 1167 receiver->byte_field_put(offset, value->b); | |
| 1168 break; | |
| 1169 case T_SHORT: | |
| 1170 receiver->short_field_put(offset, value->s); | |
| 1171 break; | |
| 1172 case T_INT: | |
| 1173 receiver->int_field_put(offset, value->i); | |
| 1174 break; | |
| 1175 case T_LONG: | |
| 1176 receiver->long_field_put(offset, value->j); | |
| 1177 break; | |
| 1178 case T_OBJECT: | |
| 1179 case T_ARRAY: { | |
| 1180 Handle obj(THREAD, (oop) value->l); | |
| 1181 if (obj.not_null()) { | |
| 1182 symbolHandle signature(THREAD, fd->signature()); | |
| 1183 Handle loader (THREAD, fd->loader()); | |
| 1184 Handle protect (THREAD, Klass::cast(fd->field_holder())->protection_domain()); | |
| 1185 klassOop k = SystemDictionary::resolve_or_fail(signature, loader, protect, true, CHECK); // may block | |
| 1186 if (!obj->is_a(k)) { | |
| 1187 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "field type mismatch"); | |
| 1188 } | |
| 1189 } | |
| 1190 receiver->obj_field_put(offset, obj()); | |
| 1191 break; | |
| 1192 } | |
| 1193 default: | |
| 1194 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "field type mismatch"); | |
| 1195 } | |
| 1196 } | |
| 1197 | |
| 1198 | |
| 1199 oop Reflection::reflect_field(oop mirror, symbolOop field_name, jint which, TRAPS) { | |
| 1200 // Exclude primitive types and array types | |
| 1201 if (java_lang_Class::is_primitive(mirror)) return NULL; | |
| 1202 if (Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array()) return NULL; | |
| 1203 | |
| 1204 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(mirror)); | |
| 1205 bool local_fields_only = (which == DECLARED); | |
| 1206 | |
| 1207 // Ensure class is linked | |
| 1208 k->link_class(CHECK_NULL); | |
| 1209 | |
| 1210 // Search class and interface fields | |
| 1211 for (FieldStream st(k, local_fields_only, false); !st.eos(); st.next()) { | |
| 1212 if (st.name() == field_name) { | |
| 1213 if (local_fields_only || st.access_flags().is_public()) { | |
| 1214 return new_field(&st, THREAD); | |
| 1215 } | |
| 1216 } | |
| 1217 } | |
| 1218 | |
| 1219 return NULL; | |
| 1220 } | |
| 1221 | |
| 1222 | |
| 1223 objArrayOop Reflection::reflect_fields(oop mirror, jint which, TRAPS) { | |
| 1224 // Exclude primitive types and array types | |
| 1225 if (java_lang_Class::is_primitive(mirror) | |
| 1226 || Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array()) { | |
| 1227 symbolHandle name = vmSymbolHandles::java_lang_reflect_Field(); | |
| 1228 klassOop klass = SystemDictionary::resolve_or_fail(name, true, CHECK_NULL); | |
| 1229 return oopFactory::new_objArray(klass, 0, CHECK_NULL); // Return empty array | |
| 1230 } | |
| 1231 | |
| 1232 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(mirror)); | |
| 1233 | |
| 1234 // Ensure class is linked | |
| 1235 k->link_class(CHECK_NULL); | |
| 1236 | |
| 1237 bool local_fields_only = (which == DECLARED); | |
| 1238 int count = 0; | |
| 1239 { // Compute fields count for class and interface fields | |
| 1240 for (FieldStream st(k, local_fields_only, false); !st.eos(); st.next()) { | |
| 1241 if (local_fields_only || st.access_flags().is_public()) { | |
| 1242 count++; | |
| 1243 } | |
| 1244 } | |
| 1245 } | |
| 1246 | |
| 1247 // Allocate result | |
| 1248 symbolHandle name = vmSymbolHandles::java_lang_reflect_Field(); | |
| 1249 klassOop klass = SystemDictionary::resolve_or_fail(name, true, CHECK_NULL); | |
| 1250 objArrayOop r = oopFactory::new_objArray(klass, count, CHECK_NULL); | |
| 1251 objArrayHandle result (THREAD, r); | |
| 1252 | |
| 1253 // Fill in results backwards | |
| 1254 { | |
| 1255 for (FieldStream st(k, local_fields_only, false); !st.eos(); st.next()) { | |
| 1256 if (local_fields_only || st.access_flags().is_public()) { | |
| 1257 oop field = new_field(&st, CHECK_NULL); | |
| 1258 result->obj_at_put(--count, field); | |
| 1259 } | |
| 1260 } | |
| 1261 assert(count == 0, "just checking"); | |
| 1262 } | |
| 1263 return result(); | |
| 1264 } | |
| 1265 | |
| 1266 | |
| 1267 oop Reflection::reflect_method(oop mirror, symbolHandle method_name, objArrayHandle types, jint which, TRAPS) { | |
| 1268 if (java_lang_Class::is_primitive(mirror)) return NULL; | |
| 1269 klassOop klass = java_lang_Class::as_klassOop(mirror); | |
| 1270 if (Klass::cast(klass)->oop_is_array() && which == MEMBER_DECLARED) return NULL; | |
| 1271 | |
| 1272 if (Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array()) { | |
| 1273 klass = SystemDictionary::object_klass(); | |
| 1274 } | |
| 1275 instanceKlassHandle h_k(THREAD, klass); | |
| 1276 | |
| 1277 // Ensure klass is linked (need not be initialized) | |
| 1278 h_k->link_class(CHECK_NULL); | |
| 1279 | |
| 1280 // For interfaces include static initializers under jdk1.2.x (since classic does that) | |
| 1281 bool include_clinit = JDK_Version::is_jdk12x_version() && h_k->is_interface(); | |
| 1282 | |
| 1283 switch (which) { | |
| 1284 case MEMBER_PUBLIC: | |
| 1285 // First the public non-static methods (works if method holder is an interface) | |
| 1286 // Note that we can ignore checks for overridden methods, since we go up the hierarchy. | |
| 1287 { | |
| 1288 for (MethodStream st(h_k, false, false); !st.eos(); st.next()) { | |
| 1289 methodHandle m(THREAD, st.method()); | |
| 1290 // For interfaces include static initializers since classic does that! | |
| 1291 if (method_name() == m->name() && (include_clinit || (m->is_public() && !m->is_static() && !m->is_initializer()))) { | |
| 1292 symbolHandle signature(THREAD, m->signature()); | |
| 1293 bool parameter_match = match_parameter_types(m, types, ArgumentCount(signature).size(), CHECK_NULL); | |
| 1294 if (parameter_match) { | |
| 1295 return new_method(m, false, false, THREAD); | |
| 1296 } | |
| 1297 } | |
| 1298 } | |
| 1299 } | |
| 1300 // Then the public static methods (works if method holder is an interface) | |
| 1301 { | |
| 1302 for (MethodStream st(h_k, false, false); !st.eos(); st.next()) { | |
| 1303 methodHandle m(THREAD, st.method()); | |
| 1304 if (method_name() == m->name() && m->is_public() && m->is_static() && !m->is_initializer()) { | |
| 1305 symbolHandle signature(THREAD, m->signature()); | |
| 1306 bool parameter_match = match_parameter_types(m, types, ArgumentCount(signature).size(), CHECK_NULL); | |
| 1307 if (parameter_match) { | |
| 1308 return new_method(m, false, false, THREAD); | |
| 1309 } | |
| 1310 } | |
| 1311 } | |
| 1312 } | |
| 1313 break; | |
| 1314 case MEMBER_DECLARED: | |
| 1315 // All local methods | |
| 1316 { | |
| 1317 for (MethodStream st(h_k, true, true); !st.eos(); st.next()) { | |
| 1318 methodHandle m(THREAD, st.method()); | |
| 1319 if (method_name() == m->name() && !m->is_initializer()) { | |
| 1320 symbolHandle signature(THREAD, m->signature()); | |
| 1321 bool parameter_match = match_parameter_types(m, types, ArgumentCount(signature).size(), CHECK_NULL); | |
| 1322 if (parameter_match) { | |
| 1323 return new_method(m, false, false, THREAD); | |
| 1324 } | |
| 1325 } | |
| 1326 } | |
| 1327 } | |
| 1328 break; | |
| 1329 default: | |
| 1330 break; | |
| 1331 } | |
| 1332 return NULL; | |
| 1333 } | |
| 1334 | |
| 1335 | |
| 1336 objArrayOop Reflection::reflect_methods(oop mirror, jint which, TRAPS) { | |
| 1337 // Exclude primitive types | |
| 1338 if (java_lang_Class::is_primitive(mirror) || | |
| 1339 (Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array() && (which == MEMBER_DECLARED))) { | |
| 1340 klassOop klass = SystemDictionary::reflect_method_klass(); | |
| 1341 return oopFactory::new_objArray(klass, 0, CHECK_NULL); // Return empty array | |
| 1342 } | |
| 1343 | |
| 1344 klassOop klass = java_lang_Class::as_klassOop(mirror); | |
| 1345 if (Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array()) { | |
| 1346 klass = SystemDictionary::object_klass(); | |
| 1347 } | |
| 1348 instanceKlassHandle h_k(THREAD, klass); | |
| 1349 | |
| 1350 // Ensure klass is linked (need not be initialized) | |
| 1351 h_k->link_class(CHECK_NULL); | |
| 1352 | |
| 1353 // We search the (super)interfaces only if h_k is an interface itself | |
| 1354 bool is_interface = h_k->is_interface(); | |
| 1355 | |
| 1356 // For interfaces include static initializers under jdk1.2.x (since classic does that) | |
| 1357 bool include_clinit = JDK_Version::is_jdk12x_version() && is_interface; | |
| 1358 | |
| 1359 switch (which) { | |
| 1360 case MEMBER_PUBLIC: | |
| 1361 { | |
| 1362 | |
| 1363 // Count public methods (non-static and static) | |
| 1364 int count = 0; | |
| 1365 { | |
| 1366 for (MethodStream st(h_k, false, false); !st.eos(); st.next()) { | |
| 1367 methodOop m = st.method(); | |
| 1368 // For interfaces include static initializers since classic does that! | |
| 1369 if (include_clinit || (!m->is_initializer() && m->is_public() && !m->is_overridden_in(h_k()))) { | |
| 1370 count++; | |
| 1371 } | |
| 1372 } | |
| 1373 } | |
| 1374 | |
| 1375 // Allocate result | |
| 1376 klassOop klass = SystemDictionary::reflect_method_klass(); | |
| 1377 objArrayOop r = oopFactory::new_objArray(klass, count, CHECK_NULL); | |
| 1378 objArrayHandle h_result (THREAD, r); | |
| 1379 | |
| 1380 // Fill in results backwards | |
| 1381 { | |
| 1382 // First the non-static public methods | |
| 1383 for (MethodStream st(h_k, false, false); !st.eos(); st.next()) { | |
| 1384 methodHandle m (THREAD, st.method()); | |
| 1385 if (!m->is_static() && !m->is_initializer() && m->is_public() && !m->is_overridden_in(h_k())) { | |
| 1386 oop method = new_method(m, false, false, CHECK_NULL); | |
| 1387 if (method == NULL) { | |
| 1388 return NULL; | |
| 1389 } else { | |
| 1390 h_result->obj_at_put(--count, method); | |
| 1391 } | |
| 1392 } | |
| 1393 } | |
| 1394 } | |
| 1395 { | |
| 1396 // Then the static public methods | |
| 1397 for (MethodStream st(h_k, false, !is_interface); !st.eos(); st.next()) { | |
| 1398 methodHandle m (THREAD, st.method()); | |
| 1399 if (m->is_static() && (include_clinit || (!m->is_initializer()) && m->is_public() && !m->is_overridden_in(h_k()))) { | |
| 1400 oop method = new_method(m, false, false, CHECK_NULL); | |
| 1401 if (method == NULL) { | |
| 1402 return NULL; | |
| 1403 } else { | |
| 1404 h_result->obj_at_put(--count, method); | |
| 1405 } | |
| 1406 } | |
| 1407 } | |
| 1408 } | |
| 1409 | |
| 1410 assert(count == 0, "just checking"); | |
| 1411 return h_result(); | |
| 1412 } | |
| 1413 | |
| 1414 case MEMBER_DECLARED: | |
| 1415 { | |
| 1416 // Count all methods | |
| 1417 int count = 0; | |
| 1418 { | |
| 1419 for (MethodStream st(h_k, true, !is_interface); !st.eos(); st.next()) { | |
| 1420 methodOop m = st.method(); | |
| 1421 if (!m->is_initializer()) { | |
| 1422 count++; | |
| 1423 } | |
| 1424 } | |
| 1425 } | |
| 1426 // Allocate result | |
| 1427 klassOop klass = SystemDictionary::reflect_method_klass(); | |
| 1428 objArrayOop r = oopFactory::new_objArray(klass, count, CHECK_NULL); | |
| 1429 objArrayHandle h_result (THREAD, r); | |
| 1430 | |
| 1431 // Fill in results backwards | |
| 1432 { | |
| 1433 for (MethodStream st(h_k, true, true); !st.eos(); st.next()) { | |
| 1434 methodHandle m (THREAD, st.method()); | |
| 1435 if (!m->is_initializer()) { | |
| 1436 oop method = new_method(m, false, false, CHECK_NULL); | |
| 1437 if (method == NULL) { | |
| 1438 return NULL; | |
| 1439 } else { | |
| 1440 h_result->obj_at_put(--count, method); | |
| 1441 } | |
| 1442 } | |
| 1443 } | |
| 1444 } | |
| 1445 assert(count == 0, "just checking"); | |
| 1446 return h_result(); | |
| 1447 } | |
| 1448 } | |
| 1449 ShouldNotReachHere(); | |
| 1450 return NULL; | |
| 1451 } | |
| 1452 | |
| 1453 | |
| 1454 oop Reflection::reflect_constructor(oop mirror, objArrayHandle types, jint which, TRAPS) { | |
| 1455 | |
| 1456 // Exclude primitive, interface and array types | |
| 1457 bool prim = java_lang_Class::is_primitive(mirror); | |
| 1458 Klass* klass = prim ? NULL : Klass::cast(java_lang_Class::as_klassOop(mirror)); | |
| 1459 if (prim || klass->is_interface() || klass->oop_is_array()) return NULL; | |
| 1460 | |
| 1461 // Must be instance klass | |
| 1462 instanceKlassHandle h_k(THREAD, java_lang_Class::as_klassOop(mirror)); | |
| 1463 | |
| 1464 // Ensure klass is linked (need not be initialized) | |
| 1465 h_k->link_class(CHECK_NULL); | |
| 1466 | |
| 1467 bool local_only = (which == MEMBER_DECLARED); | |
| 1468 for (MethodStream st(h_k, true, true); !st.eos(); st.next()) { | |
| 1469 methodHandle m(THREAD, st.method()); | |
| 1470 if (m->name() == vmSymbols::object_initializer_name() && (local_only || m->is_public())) { | |
| 1471 symbolHandle signature(THREAD, m->signature()); | |
| 1472 bool parameter_match = match_parameter_types(m, types, ArgumentCount(signature).size(), CHECK_NULL); | |
| 1473 if (parameter_match) { | |
| 1474 return new_constructor(m, THREAD); | |
| 1475 } | |
| 1476 } | |
| 1477 } | |
| 1478 | |
| 1479 return NULL; | |
| 1480 } | |
| 1481 | |
| 1482 | |
| 1483 objArrayOop Reflection::reflect_constructors(oop mirror, jint which, TRAPS) { | |
| 1484 // Exclude primitive, interface and array types | |
| 1485 bool prim = java_lang_Class::is_primitive(mirror); | |
| 1486 Klass* k = prim ? NULL : Klass::cast(java_lang_Class::as_klassOop(mirror)); | |
| 1487 if (prim || k->is_interface() || k->oop_is_array()) { | |
| 1488 return oopFactory::new_objArray(SystemDictionary::reflect_constructor_klass(), 0, CHECK_NULL); // Return empty array | |
| 1489 } | |
| 1490 | |
| 1491 // Must be instanceKlass at this point | |
| 1492 instanceKlassHandle h_k(THREAD, java_lang_Class::as_klassOop(mirror)); | |
| 1493 | |
| 1494 // Ensure klass is linked (need not be initialized) | |
| 1495 h_k->link_class(CHECK_NULL); | |
| 1496 | |
| 1497 bool local_only = (which == MEMBER_DECLARED); | |
| 1498 int count = 0; | |
| 1499 { | |
| 1500 for (MethodStream st(h_k, true, true); !st.eos(); st.next()) { | |
| 1501 methodOop m = st.method(); | |
| 1502 if (m->name() == vmSymbols::object_initializer_name() && (local_only || m->is_public())) { | |
| 1503 count++; | |
| 1504 } | |
| 1505 } | |
| 1506 } | |
| 1507 | |
| 1508 // Allocate result | |
| 1509 symbolHandle name = vmSymbolHandles::java_lang_reflect_Constructor(); | |
| 1510 klassOop klass = SystemDictionary::resolve_or_fail(name, true, CHECK_NULL); | |
| 1511 objArrayOop r = oopFactory::new_objArray(klass, count, CHECK_NULL); | |
| 1512 objArrayHandle h_result (THREAD, r); | |
| 1513 | |
| 1514 // Fill in results backwards | |
| 1515 { | |
| 1516 for (MethodStream st(h_k, true, true); !st.eos(); st.next()) { | |
| 1517 methodHandle m (THREAD, st.method()); | |
| 1518 if (m->name() == vmSymbols::object_initializer_name() && (local_only || m->is_public())) { | |
| 1519 oop constr = new_constructor(m, CHECK_NULL); | |
| 1520 if (constr == NULL) { | |
| 1521 return NULL; | |
| 1522 } else { | |
| 1523 h_result->obj_at_put(--count, constr); | |
| 1524 } | |
| 1525 } | |
| 1526 } | |
| 1527 assert(count == 0, "just checking"); | |
| 1528 } | |
| 1529 return h_result(); | |
| 1530 } | |
| 1531 | |
| 1532 | |
| 1533 // This would be nicer if, say, java.lang.reflect.Method was a subclass | |
| 1534 // of java.lang.reflect.Constructor | |
| 1535 | |
| 1536 oop Reflection::invoke_method(oop method_mirror, Handle receiver, objArrayHandle args, TRAPS) { | |
| 1537 oop mirror = java_lang_reflect_Method::clazz(method_mirror); | |
| 1538 int slot = java_lang_reflect_Method::slot(method_mirror); | |
| 1539 bool override = java_lang_reflect_Method::override(method_mirror) != 0; | |
| 1540 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Method::parameter_types(method_mirror))); | |
| 1541 | |
| 1542 oop return_type_mirror = java_lang_reflect_Method::return_type(method_mirror); | |
| 1543 BasicType rtype; | |
| 1544 if (java_lang_Class::is_primitive(return_type_mirror)) { | |
| 1545 rtype = basic_type_mirror_to_basic_type(return_type_mirror, CHECK_NULL); | |
| 1546 } else { | |
| 1547 rtype = T_OBJECT; | |
| 1548 } | |
| 1549 | |
| 1550 instanceKlassHandle klass(THREAD, java_lang_Class::as_klassOop(mirror)); | |
|
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1551 methodOop m = klass->method_with_idnum(slot); |
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1552 if (m == NULL) { |
| 0 | 1553 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke"); |
| 1554 } | |
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1555 methodHandle method(THREAD, m); |
| 0 | 1556 |
| 1557 return invoke(klass, method, receiver, override, ptypes, rtype, args, true, THREAD); | |
| 1558 } | |
| 1559 | |
| 1560 | |
| 1561 oop Reflection::invoke_constructor(oop constructor_mirror, objArrayHandle args, TRAPS) { | |
| 1562 oop mirror = java_lang_reflect_Constructor::clazz(constructor_mirror); | |
| 1563 int slot = java_lang_reflect_Constructor::slot(constructor_mirror); | |
| 1564 bool override = java_lang_reflect_Constructor::override(constructor_mirror) != 0; | |
| 1565 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Constructor::parameter_types(constructor_mirror))); | |
| 1566 | |
| 1567 instanceKlassHandle klass(THREAD, java_lang_Class::as_klassOop(mirror)); | |
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1568 methodOop m = klass->method_with_idnum(slot); |
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1569 if (m == NULL) { |
| 0 | 1570 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke"); |
| 1571 } | |
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1572 methodHandle method(THREAD, m); |
| 0 | 1573 assert(method->name() == vmSymbols::object_initializer_name(), "invalid constructor"); |
| 1574 | |
| 1575 // Make sure klass gets initialize | |
| 1576 klass->initialize(CHECK_NULL); | |
| 1577 | |
| 1578 // Create new instance (the receiver) | |
| 1579 klass->check_valid_for_instantiation(false, CHECK_NULL); | |
| 1580 Handle receiver = klass->allocate_instance_handle(CHECK_NULL); | |
| 1581 | |
| 1582 // Ignore result from call and return receiver | |
| 1583 invoke(klass, method, receiver, override, ptypes, T_VOID, args, false, CHECK_NULL); | |
| 1584 return receiver(); | |
| 1585 } | |
| 1586 | |
| 1587 | |
| 1588 #endif /* SUPPORT_OLD_REFLECTION */ |