Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/runtime/reflection.cpp@c89f86385056 (annotated)

src/share/vm/runtime/reflection.cpp

Fri, 20 Mar 2009 23:19:36 -0700

author
jrose
date
Fri, 20 Mar 2009 23:19:36 -0700
changeset 1100
c89f86385056
parent 866
a45484ea312d
child 1577
4ce7240d622c
permissions
-rw-r--r--

6814659: separable cleanups and subroutines for 6655638
Summary: preparatory but separable changes for method handles
Reviewed-by: kvn, never

duke@435 1 /*
jrose@1100 2 * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
duke@435 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435 4 *
duke@435 5 * This code is free software; you can redistribute it and/or modify it
duke@435 6 * under the terms of the GNU General Public License version 2 only, as
duke@435 7 * published by the Free Software Foundation.
duke@435 8 *
duke@435 9 * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435 12 * version 2 for more details (a copy is included in the LICENSE file that
duke@435 13 * accompanied this code).
duke@435 14 *
duke@435 15 * You should have received a copy of the GNU General Public License version
duke@435 16 * 2 along with this work; if not, write to the Free Software Foundation,
duke@435 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435 18 *
duke@435 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435 20 * CA 95054 USA or visit www.sun.com if you need additional information or
duke@435 21 * have any questions.
duke@435 22 *
duke@435 23 */
duke@435 24
duke@435 25 #include "incls/_precompiled.incl"
duke@435 26 #include "incls/_reflection.cpp.incl"
duke@435 27
duke@435 28 #define JAVA_1_5_VERSION 49
duke@435 29
duke@435 30 static void trace_class_resolution(klassOop to_class) {
duke@435 31 ResourceMark rm;
duke@435 32 int line_number = -1;
duke@435 33 const char * source_file = NULL;
duke@435 34 klassOop caller = NULL;
duke@435 35 JavaThread* jthread = JavaThread::current();
duke@435 36 if (jthread->has_last_Java_frame()) {
duke@435 37 vframeStream vfst(jthread);
duke@435 38 // skip over any frames belonging to java.lang.Class
duke@435 39 while (!vfst.at_end() &&
duke@435 40 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class()) {
duke@435 41 vfst.next();
duke@435 42 }
duke@435 43 if (!vfst.at_end()) {
duke@435 44 // this frame is a likely suspect
duke@435 45 caller = vfst.method()->method_holder();
duke@435 46 line_number = vfst.method()->line_number_from_bci(vfst.bci());
duke@435 47 symbolOop s = instanceKlass::cast(vfst.method()->method_holder())->source_file_name();
duke@435 48 if (s != NULL) {
duke@435 49 source_file = s->as_C_string();
duke@435 50 }
duke@435 51 }
duke@435 52 }
duke@435 53 if (caller != NULL) {
duke@435 54 const char * from = Klass::cast(caller)->external_name();
duke@435 55 const char * to = Klass::cast(to_class)->external_name();
duke@435 56 // print in a single call to reduce interleaving between threads
duke@435 57 if (source_file != NULL) {
duke@435 58 tty->print("RESOLVE %s %s %s:%d (reflection)\n", from, to, source_file, line_number);
duke@435 59 } else {
duke@435 60 tty->print("RESOLVE %s %s (reflection)\n", from, to);
duke@435 61 }
duke@435 62 }
duke@435 63 }
duke@435 64
duke@435 65
duke@435 66 oop Reflection::box(jvalue* value, BasicType type, TRAPS) {
duke@435 67 if (type == T_VOID) {
duke@435 68 return NULL;
duke@435 69 }
duke@435 70 if (type == T_OBJECT || type == T_ARRAY) {
duke@435 71 // regular objects are not boxed
duke@435 72 return (oop) value->l;
duke@435 73 }
duke@435 74 oop result = java_lang_boxing_object::create(type, value, CHECK_NULL);
duke@435 75 if (result == NULL) {
duke@435 76 THROW_(vmSymbols::java_lang_IllegalArgumentException(), result);
duke@435 77 }
duke@435 78 return result;
duke@435 79 }
duke@435 80
duke@435 81
duke@435 82 BasicType Reflection::unbox_for_primitive(oop box, jvalue* value, TRAPS) {
duke@435 83 if (box == NULL) {
duke@435 84 THROW_(vmSymbols::java_lang_IllegalArgumentException(), T_ILLEGAL);
duke@435 85 }
duke@435 86 return java_lang_boxing_object::get_value(box, value);
duke@435 87 }
duke@435 88
duke@435 89 BasicType Reflection::unbox_for_regular_object(oop box, jvalue* value) {
duke@435 90 // Note: box is really the unboxed oop. It might even be a Short, etc.!
duke@435 91 value->l = (jobject) box;
duke@435 92 return T_OBJECT;
duke@435 93 }
duke@435 94
duke@435 95
duke@435 96 void Reflection::widen(jvalue* value, BasicType current_type, BasicType wide_type, TRAPS) {
duke@435 97 assert(wide_type != current_type, "widen should not be called with identical types");
duke@435 98 switch (wide_type) {
duke@435 99 case T_BOOLEAN:
duke@435 100 case T_BYTE:
duke@435 101 case T_CHAR:
duke@435 102 break; // fail
duke@435 103 case T_SHORT:
duke@435 104 switch (current_type) {
duke@435 105 case T_BYTE:
duke@435 106 value->s = (jshort) value->b;
duke@435 107 return;
duke@435 108 }
duke@435 109 break; // fail
duke@435 110 case T_INT:
duke@435 111 switch (current_type) {
duke@435 112 case T_BYTE:
duke@435 113 value->i = (jint) value->b;
duke@435 114 return;
duke@435 115 case T_CHAR:
duke@435 116 value->i = (jint) value->c;
duke@435 117 return;
duke@435 118 case T_SHORT:
duke@435 119 value->i = (jint) value->s;
duke@435 120 return;
duke@435 121 }
duke@435 122 break; // fail
duke@435 123 case T_LONG:
duke@435 124 switch (current_type) {
duke@435 125 case T_BYTE:
duke@435 126 value->j = (jlong) value->b;
duke@435 127 return;
duke@435 128 case T_CHAR:
duke@435 129 value->j = (jlong) value->c;
duke@435 130 return;
duke@435 131 case T_SHORT:
duke@435 132 value->j = (jlong) value->s;
duke@435 133 return;
duke@435 134 case T_INT:
duke@435 135 value->j = (jlong) value->i;
duke@435 136 return;
duke@435 137 }
duke@435 138 break; // fail
duke@435 139 case T_FLOAT:
duke@435 140 switch (current_type) {
duke@435 141 case T_BYTE:
duke@435 142 value->f = (jfloat) value->b;
duke@435 143 return;
duke@435 144 case T_CHAR:
duke@435 145 value->f = (jfloat) value->c;
duke@435 146 return;
duke@435 147 case T_SHORT:
duke@435 148 value->f = (jfloat) value->s;
duke@435 149 return;
duke@435 150 case T_INT:
duke@435 151 value->f = (jfloat) value->i;
duke@435 152 return;
duke@435 153 case T_LONG:
duke@435 154 value->f = (jfloat) value->j;
duke@435 155 return;
duke@435 156 }
duke@435 157 break; // fail
duke@435 158 case T_DOUBLE:
duke@435 159 switch (current_type) {
duke@435 160 case T_BYTE:
duke@435 161 value->d = (jdouble) value->b;
duke@435 162 return;
duke@435 163 case T_CHAR:
duke@435 164 value->d = (jdouble) value->c;
duke@435 165 return;
duke@435 166 case T_SHORT:
duke@435 167 value->d = (jdouble) value->s;
duke@435 168 return;
duke@435 169 case T_INT:
duke@435 170 value->d = (jdouble) value->i;
duke@435 171 return;
duke@435 172 case T_FLOAT:
duke@435 173 value->d = (jdouble) value->f;
duke@435 174 return;
duke@435 175 case T_LONG:
duke@435 176 value->d = (jdouble) value->j;
duke@435 177 return;
duke@435 178 }
duke@435 179 break; // fail
duke@435 180 default:
duke@435 181 break; // fail
duke@435 182 }
duke@435 183 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");
duke@435 184 }
duke@435 185
duke@435 186
duke@435 187 BasicType Reflection::array_get(jvalue* value, arrayOop a, int index, TRAPS) {
duke@435 188 if (!a->is_within_bounds(index)) {
duke@435 189 THROW_(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), T_ILLEGAL);
duke@435 190 }
duke@435 191 if (a->is_objArray()) {
duke@435 192 value->l = (jobject) objArrayOop(a)->obj_at(index);
duke@435 193 return T_OBJECT;
duke@435 194 } else {
duke@435 195 assert(a->is_typeArray(), "just checking");
duke@435 196 BasicType type = typeArrayKlass::cast(a->klass())->element_type();
duke@435 197 switch (type) {
duke@435 198 case T_BOOLEAN:
duke@435 199 value->z = typeArrayOop(a)->bool_at(index);
duke@435 200 break;
duke@435 201 case T_CHAR:
duke@435 202 value->c = typeArrayOop(a)->char_at(index);
duke@435 203 break;
duke@435 204 case T_FLOAT:
duke@435 205 value->f = typeArrayOop(a)->float_at(index);
duke@435 206 break;
duke@435 207 case T_DOUBLE:
duke@435 208 value->d = typeArrayOop(a)->double_at(index);
duke@435 209 break;
duke@435 210 case T_BYTE:
duke@435 211 value->b = typeArrayOop(a)->byte_at(index);
duke@435 212 break;
duke@435 213 case T_SHORT:
duke@435 214 value->s = typeArrayOop(a)->short_at(index);
duke@435 215 break;
duke@435 216 case T_INT:
duke@435 217 value->i = typeArrayOop(a)->int_at(index);
duke@435 218 break;
duke@435 219 case T_LONG:
duke@435 220 value->j = typeArrayOop(a)->long_at(index);
duke@435 221 break;
duke@435 222 default:
duke@435 223 return T_ILLEGAL;
duke@435 224 }
duke@435 225 return type;
duke@435 226 }
duke@435 227 }
duke@435 228
duke@435 229
duke@435 230 void Reflection::array_set(jvalue* value, arrayOop a, int index, BasicType value_type, TRAPS) {
duke@435 231 if (!a->is_within_bounds(index)) {
duke@435 232 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
duke@435 233 }
duke@435 234 if (a->is_objArray()) {
duke@435 235 if (value_type == T_OBJECT) {
duke@435 236 oop obj = (oop) value->l;
duke@435 237 if (obj != NULL) {
duke@435 238 klassOop element_klass = objArrayKlass::cast(a->klass())->element_klass();
duke@435 239 if (!obj->is_a(element_klass)) {
duke@435 240 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "array element type mismatch");
duke@435 241 }
duke@435 242 }
duke@435 243 objArrayOop(a)->obj_at_put(index, obj);
duke@435 244 }
duke@435 245 } else {
duke@435 246 assert(a->is_typeArray(), "just checking");
duke@435 247 BasicType array_type = typeArrayKlass::cast(a->klass())->element_type();
duke@435 248 if (array_type != value_type) {
duke@435 249 // The widen operation can potentially throw an exception, but cannot block,
duke@435 250 // so typeArrayOop a is safe if the call succeeds.
duke@435 251 widen(value, value_type, array_type, CHECK);
duke@435 252 }
duke@435 253 switch (array_type) {
duke@435 254 case T_BOOLEAN:
duke@435 255 typeArrayOop(a)->bool_at_put(index, value->z);
duke@435 256 break;
duke@435 257 case T_CHAR:
duke@435 258 typeArrayOop(a)->char_at_put(index, value->c);
duke@435 259 break;
duke@435 260 case T_FLOAT:
duke@435 261 typeArrayOop(a)->float_at_put(index, value->f);
duke@435 262 break;
duke@435 263 case T_DOUBLE:
duke@435 264 typeArrayOop(a)->double_at_put(index, value->d);
duke@435 265 break;
duke@435 266 case T_BYTE:
duke@435 267 typeArrayOop(a)->byte_at_put(index, value->b);
duke@435 268 break;
duke@435 269 case T_SHORT:
duke@435 270 typeArrayOop(a)->short_at_put(index, value->s);
duke@435 271 break;
duke@435 272 case T_INT:
duke@435 273 typeArrayOop(a)->int_at_put(index, value->i);
duke@435 274 break;
duke@435 275 case T_LONG:
duke@435 276 typeArrayOop(a)->long_at_put(index, value->j);
duke@435 277 break;
duke@435 278 default:
duke@435 279 THROW(vmSymbols::java_lang_IllegalArgumentException());
duke@435 280 }
duke@435 281 }
duke@435 282 }
duke@435 283
duke@435 284
duke@435 285 klassOop Reflection::basic_type_mirror_to_arrayklass(oop basic_type_mirror, TRAPS) {
duke@435 286 assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking");
duke@435 287 BasicType type = java_lang_Class::primitive_type(basic_type_mirror);
duke@435 288 if (type == T_VOID) {
duke@435 289 THROW_0(vmSymbols::java_lang_IllegalArgumentException());
duke@435 290 } else {
duke@435 291 return Universe::typeArrayKlassObj(type);
duke@435 292 }
duke@435 293 }
duke@435 294
duke@435 295
duke@435 296 oop Reflection:: basic_type_arrayklass_to_mirror(klassOop basic_type_arrayklass, TRAPS) {
duke@435 297 BasicType type = typeArrayKlass::cast(basic_type_arrayklass)->element_type();
duke@435 298 return Universe::java_mirror(type);
duke@435 299 }
duke@435 300
duke@435 301
duke@435 302 arrayOop Reflection::reflect_new_array(oop element_mirror, jint length, TRAPS) {
duke@435 303 if (element_mirror == NULL) {
duke@435 304 THROW_0(vmSymbols::java_lang_NullPointerException());
duke@435 305 }
duke@435 306 if (length < 0) {
duke@435 307 THROW_0(vmSymbols::java_lang_NegativeArraySizeException());
duke@435 308 }
duke@435 309 if (java_lang_Class::is_primitive(element_mirror)) {
duke@435 310 klassOop tak = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL);
duke@435 311 return typeArrayKlass::cast(tak)->allocate(length, THREAD);
duke@435 312 } else {
duke@435 313 klassOop k = java_lang_Class::as_klassOop(element_mirror);
duke@435 314 if (Klass::cast(k)->oop_is_array() && arrayKlass::cast(k)->dimension() >= MAX_DIM) {
duke@435 315 THROW_0(vmSymbols::java_lang_IllegalArgumentException());
duke@435 316 }
duke@435 317 return oopFactory::new_objArray(k, length, THREAD);
duke@435 318 }
duke@435 319 }
duke@435 320
duke@435 321
duke@435 322 arrayOop Reflection::reflect_new_multi_array(oop element_mirror, typeArrayOop dim_array, TRAPS) {
duke@435 323 assert(dim_array->is_typeArray(), "just checking");
duke@435 324 assert(typeArrayKlass::cast(dim_array->klass())->element_type() == T_INT, "just checking");
duke@435 325
duke@435 326 if (element_mirror == NULL) {
duke@435 327 THROW_0(vmSymbols::java_lang_NullPointerException());
duke@435 328 }
duke@435 329
duke@435 330 int len = dim_array->length();
duke@435 331 if (len <= 0 || len > MAX_DIM) {
duke@435 332 THROW_0(vmSymbols::java_lang_IllegalArgumentException());
duke@435 333 }
duke@435 334
duke@435 335 jint dimensions[MAX_DIM]; // C array copy of intArrayOop
duke@435 336 for (int i = 0; i < len; i++) {
duke@435 337 int d = dim_array->int_at(i);
duke@435 338 if (d < 0) {
duke@435 339 THROW_0(vmSymbols::java_lang_NegativeArraySizeException());
duke@435 340 }
duke@435 341 dimensions[i] = d;
duke@435 342 }
duke@435 343
duke@435 344 klassOop klass;
duke@435 345 int dim = len;
duke@435 346 if (java_lang_Class::is_primitive(element_mirror)) {
duke@435 347 klass = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL);
duke@435 348 } else {
duke@435 349 klass = java_lang_Class::as_klassOop(element_mirror);
duke@435 350 if (Klass::cast(klass)->oop_is_array()) {
duke@435 351 int k_dim = arrayKlass::cast(klass)->dimension();
duke@435 352 if (k_dim + len > MAX_DIM) {
duke@435 353 THROW_0(vmSymbols::java_lang_IllegalArgumentException());
duke@435 354 }
duke@435 355 dim += k_dim;
duke@435 356 }
duke@435 357 }
duke@435 358 klass = Klass::cast(klass)->array_klass(dim, CHECK_NULL);
duke@435 359 oop obj = arrayKlass::cast(klass)->multi_allocate(len, dimensions, THREAD);
duke@435 360 assert(obj->is_array(), "just checking");
duke@435 361 return arrayOop(obj);
duke@435 362 }
duke@435 363
duke@435 364
duke@435 365 oop Reflection::array_component_type(oop mirror, TRAPS) {
duke@435 366 if (java_lang_Class::is_primitive(mirror)) {
duke@435 367 return NULL;
duke@435 368 }
duke@435 369
duke@435 370 klassOop klass = java_lang_Class::as_klassOop(mirror);
duke@435 371 if (!Klass::cast(klass)->oop_is_array()) {
duke@435 372 return NULL;
duke@435 373 }
duke@435 374
duke@435 375 oop result = arrayKlass::cast(klass)->component_mirror();
duke@435 376 #ifdef ASSERT
duke@435 377 oop result2 = NULL;
duke@435 378 if (arrayKlass::cast(klass)->dimension() == 1) {
duke@435 379 if (Klass::cast(klass)->oop_is_typeArray()) {
duke@435 380 result2 = basic_type_arrayklass_to_mirror(klass, CHECK_NULL);
duke@435 381 } else {
duke@435 382 result2 = Klass::cast(objArrayKlass::cast(klass)->element_klass())->java_mirror();
duke@435 383 }
duke@435 384 } else {
duke@435 385 klassOop lower_dim = arrayKlass::cast(klass)->lower_dimension();
duke@435 386 assert(Klass::cast(lower_dim)->oop_is_array(), "just checking");
duke@435 387 result2 = Klass::cast(lower_dim)->java_mirror();
duke@435 388 }
duke@435 389 assert(result == result2, "results must be consistent");
duke@435 390 #endif //ASSERT
duke@435 391 return result;
duke@435 392 }
duke@435 393
duke@435 394
duke@435 395 bool Reflection::reflect_check_access(klassOop field_class, AccessFlags acc, klassOop target_class, bool is_method_invoke, TRAPS) {
duke@435 396 // field_class : declaring class
duke@435 397 // acc : declared field access
duke@435 398 // target_class : for protected
duke@435 399
duke@435 400 // Check if field or method is accessible to client. Throw an
duke@435 401 // IllegalAccessException and return false if not.
duke@435 402
duke@435 403 // The "client" is the class associated with the nearest real frame
duke@435 404 // getCallerClass already skips Method.invoke frames, so pass 0 in
duke@435 405 // that case (same as classic).
duke@435 406 ResourceMark rm(THREAD);
duke@435 407 assert(THREAD->is_Java_thread(), "sanity check");
duke@435 408 klassOop client_class = ((JavaThread *)THREAD)->security_get_caller_class(is_method_invoke ? 0 : 1);
duke@435 409
duke@435 410 if (client_class != field_class) {
duke@435 411 if (!verify_class_access(client_class, field_class, false)
duke@435 412 || !verify_field_access(client_class,
duke@435 413 field_class,
duke@435 414 field_class,
duke@435 415 acc,
duke@435 416 false)) {
duke@435 417 THROW_(vmSymbols::java_lang_IllegalAccessException(), false);
duke@435 418 }
duke@435 419 }
duke@435 420
duke@435 421 // Additional test for protected members: JLS 6.6.2
duke@435 422
duke@435 423 if (acc.is_protected()) {
duke@435 424 if (target_class != client_class) {
duke@435 425 if (!is_same_class_package(client_class, field_class)) {
duke@435 426 if (!Klass::cast(target_class)->is_subclass_of(client_class)) {
duke@435 427 THROW_(vmSymbols::java_lang_IllegalAccessException(), false);
duke@435 428 }
duke@435 429 }
duke@435 430 }
duke@435 431 }
duke@435 432
duke@435 433 // Passed all tests
duke@435 434 return true;
duke@435 435 }
duke@435 436
duke@435 437
duke@435 438 bool Reflection::verify_class_access(klassOop current_class, klassOop new_class, bool classloader_only) {
duke@435 439 // Verify that current_class can access new_class. If the classloader_only
duke@435 440 // flag is set, we automatically allow any accesses in which current_class
duke@435 441 // doesn't have a classloader.
duke@435 442 if ((current_class == NULL) ||
duke@435 443 (current_class == new_class) ||
duke@435 444 (instanceKlass::cast(new_class)->is_public()) ||
duke@435 445 is_same_class_package(current_class, new_class)) {
duke@435 446 return true;
duke@435 447 }
duke@435 448 // New (1.4) reflection implementation. Allow all accesses from
duke@435 449 // sun/reflect/MagicAccessorImpl subclasses to succeed trivially.
duke@435 450 if ( JDK_Version::is_gte_jdk14x_version()
duke@435 451 && UseNewReflection
duke@435 452 && Klass::cast(current_class)->is_subclass_of(SystemDictionary::reflect_magic_klass())) {
duke@435 453 return true;
duke@435 454 }
duke@435 455
duke@435 456 return can_relax_access_check_for(current_class, new_class, classloader_only);
duke@435 457 }
duke@435 458
jrose@866 459 static bool under_host_klass(instanceKlass* ik, klassOop host_klass) {
jrose@866 460 DEBUG_ONLY(int inf_loop_check = 1000 * 1000 * 1000);
jrose@866 461 for (;;) {
jrose@866 462 klassOop hc = (klassOop) ik->host_klass();
jrose@866 463 if (hc == NULL) return false;
jrose@866 464 if (hc == host_klass) return true;
jrose@866 465 ik = instanceKlass::cast(hc);
jrose@866 466
jrose@866 467 // There's no way to make a host class loop short of patching memory.
jrose@866 468 // Therefore there cannot be a loop here unles there's another bug.
jrose@866 469 // Still, let's check for it.
jrose@866 470 assert(--inf_loop_check > 0, "no host_klass loop");
jrose@866 471 }
jrose@866 472 }
jrose@866 473
duke@435 474 bool Reflection::can_relax_access_check_for(
duke@435 475 klassOop accessor, klassOop accessee, bool classloader_only) {
duke@435 476 instanceKlass* accessor_ik = instanceKlass::cast(accessor);
duke@435 477 instanceKlass* accessee_ik = instanceKlass::cast(accessee);
jrose@866 478
jrose@866 479 // If either is on the other's host_klass chain, access is OK,
jrose@866 480 // because one is inside the other.
jrose@866 481 if (under_host_klass(accessor_ik, accessee) ||
jrose@866 482 under_host_klass(accessee_ik, accessor))
jrose@866 483 return true;
jrose@866 484
duke@435 485 if (RelaxAccessControlCheck ||
duke@435 486 (accessor_ik->major_version() < JAVA_1_5_VERSION &&
duke@435 487 accessee_ik->major_version() < JAVA_1_5_VERSION)) {
duke@435 488 return classloader_only &&
duke@435 489 Verifier::relax_verify_for(accessor_ik->class_loader()) &&
duke@435 490 accessor_ik->protection_domain() == accessee_ik->protection_domain() &&
duke@435 491 accessor_ik->class_loader() == accessee_ik->class_loader();
duke@435 492 } else {
duke@435 493 return false;
duke@435 494 }
duke@435 495 }
duke@435 496
duke@435 497 bool Reflection::verify_field_access(klassOop current_class,
duke@435 498 klassOop resolved_class,
duke@435 499 klassOop field_class,
duke@435 500 AccessFlags access,
duke@435 501 bool classloader_only,
duke@435 502 bool protected_restriction) {
duke@435 503 // Verify that current_class can access a field of field_class, where that
duke@435 504 // field's access bits are "access". We assume that we've already verified
duke@435 505 // that current_class can access field_class.
duke@435 506 //
duke@435 507 // If the classloader_only flag is set, we automatically allow any accesses
duke@435 508 // in which current_class doesn't have a classloader.
duke@435 509 //
duke@435 510 // "resolved_class" is the runtime type of "field_class". Sometimes we don't
duke@435 511 // need this distinction (e.g. if all we have is the runtime type, or during
duke@435 512 // class file parsing when we only care about the static type); in that case
duke@435 513 // callers should ensure that resolved_class == field_class.
duke@435 514 //
duke@435 515 if ((current_class == NULL) ||
duke@435 516 (current_class == field_class) ||
duke@435 517 access.is_public()) {
duke@435 518 return true;
duke@435 519 }
duke@435 520
duke@435 521 if (access.is_protected()) {
duke@435 522 if (!protected_restriction) {
duke@435 523 // See if current_class is a subclass of field_class
duke@435 524 if (Klass::cast(current_class)->is_subclass_of(field_class)) {
kamg@550 525 if (access.is_static() || // static fields are ok, see 6622385
kamg@550 526 current_class == resolved_class ||
duke@435 527 field_class == resolved_class ||
duke@435 528 Klass::cast(current_class)->is_subclass_of(resolved_class) ||
duke@435 529 Klass::cast(resolved_class)->is_subclass_of(current_class)) {
duke@435 530 return true;
duke@435 531 }
duke@435 532 }
duke@435 533 }
duke@435 534 }
duke@435 535
duke@435 536 if (!access.is_private() && is_same_class_package(current_class, field_class)) {
duke@435 537 return true;
duke@435 538 }
duke@435 539
duke@435 540 // New (1.4) reflection implementation. Allow all accesses from
duke@435 541 // sun/reflect/MagicAccessorImpl subclasses to succeed trivially.
duke@435 542 if ( JDK_Version::is_gte_jdk14x_version()
duke@435 543 && UseNewReflection
duke@435 544 && Klass::cast(current_class)->is_subclass_of(SystemDictionary::reflect_magic_klass())) {
duke@435 545 return true;
duke@435 546 }
duke@435 547
duke@435 548 return can_relax_access_check_for(
duke@435 549 current_class, field_class, classloader_only);
duke@435 550 }
duke@435 551
duke@435 552
duke@435 553 bool Reflection::is_same_class_package(klassOop class1, klassOop class2) {
duke@435 554 return instanceKlass::cast(class1)->is_same_class_package(class2);
duke@435 555 }
duke@435 556
jrose@1100 557 bool Reflection::is_same_package_member(klassOop class1, klassOop class2, TRAPS) {
jrose@1100 558 return instanceKlass::cast(class1)->is_same_package_member(class2, THREAD);
jrose@1100 559 }
jrose@1100 560
duke@435 561
duke@435 562 // Checks that the 'outer' klass has declared 'inner' as being an inner klass. If not,
duke@435 563 // throw an incompatible class change exception
jrose@1100 564 // If inner_is_member, require the inner to be a member of the outer.
jrose@1100 565 // If !inner_is_member, require the inner to be anonymous (a non-member).
jrose@1100 566 // Caller is responsible for figuring out in advance which case must be true.
jrose@1100 567 void Reflection::check_for_inner_class(instanceKlassHandle outer, instanceKlassHandle inner,
jrose@1100 568 bool inner_is_member, TRAPS) {
duke@435 569 const int inner_class_info_index = 0;
duke@435 570 const int outer_class_info_index = 1;
duke@435 571
duke@435 572 typeArrayHandle icls (THREAD, outer->inner_classes());
duke@435 573 constantPoolHandle cp (THREAD, outer->constants());
duke@435 574 for(int i = 0; i < icls->length(); i += 4) {
duke@435 575 int ioff = icls->ushort_at(i + inner_class_info_index);
duke@435 576 int ooff = icls->ushort_at(i + outer_class_info_index);
duke@435 577
jrose@1100 578 if (inner_is_member && ioff != 0 && ooff != 0) {
duke@435 579 klassOop o = cp->klass_at(ooff, CHECK);
duke@435 580 if (o == outer()) {
duke@435 581 klassOop i = cp->klass_at(ioff, CHECK);
duke@435 582 if (i == inner()) {
duke@435 583 return;
duke@435 584 }
duke@435 585 }
duke@435 586 }
jrose@1100 587 if (!inner_is_member && ioff != 0 && ooff == 0 &&
jrose@1100 588 cp->klass_name_at_matches(inner, ioff)) {
jrose@1100 589 klassOop i = cp->klass_at(ioff, CHECK);
jrose@1100 590 if (i == inner()) {
jrose@1100 591 return;
jrose@1100 592 }
jrose@1100 593 }
duke@435 594 }
duke@435 595
duke@435 596 // 'inner' not declared as an inner klass in outer
duke@435 597 ResourceMark rm(THREAD);
duke@435 598 Exceptions::fthrow(
duke@435 599 THREAD_AND_LOCATION,
duke@435 600 vmSymbolHandles::java_lang_IncompatibleClassChangeError(),
duke@435 601 "%s and %s disagree on InnerClasses attribute",
duke@435 602 outer->external_name(),
duke@435 603 inner->external_name()
duke@435 604 );
duke@435 605 }
duke@435 606
duke@435 607 // Utility method converting a single SignatureStream element into java.lang.Class instance
duke@435 608
duke@435 609 oop get_mirror_from_signature(methodHandle method, SignatureStream* ss, TRAPS) {
duke@435 610 switch (ss->type()) {
duke@435 611 default:
duke@435 612 assert(ss->type() != T_VOID || ss->at_return_type(), "T_VOID should only appear as return type");
duke@435 613 return java_lang_Class::primitive_mirror(ss->type());
duke@435 614 case T_OBJECT:
duke@435 615 case T_ARRAY:
duke@435 616 symbolOop name = ss->as_symbol(CHECK_NULL);
duke@435 617 oop loader = instanceKlass::cast(method->method_holder())->class_loader();
duke@435 618 oop protection_domain = instanceKlass::cast(method->method_holder())->protection_domain();
duke@435 619 klassOop k = SystemDictionary::resolve_or_fail(
duke@435 620 symbolHandle(THREAD, name),
duke@435 621 Handle(THREAD, loader),
duke@435 622 Handle(THREAD, protection_domain),
duke@435 623 true, CHECK_NULL);
duke@435 624 if (TraceClassResolution) {
duke@435 625 trace_class_resolution(k);
duke@435 626 }
duke@435 627 return k->klass_part()->java_mirror();
duke@435 628 };
duke@435 629 }
duke@435 630
duke@435 631
duke@435 632 objArrayHandle Reflection::get_parameter_types(methodHandle method, int parameter_count, oop* return_type, TRAPS) {
duke@435 633 // Allocate array holding parameter types (java.lang.Class instances)
duke@435 634 objArrayOop m = oopFactory::new_objArray(SystemDictionary::class_klass(), parameter_count, CHECK_(objArrayHandle()));
duke@435 635 objArrayHandle mirrors (THREAD, m);
duke@435 636 int index = 0;
duke@435 637 // Collect parameter types
duke@435 638 symbolHandle signature (THREAD, method->signature());
duke@435 639 SignatureStream ss(signature);
duke@435 640 while (!ss.at_return_type()) {
duke@435 641 oop mirror = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle()));
duke@435 642 mirrors->obj_at_put(index++, mirror);
duke@435 643 ss.next();
duke@435 644 }
duke@435 645 assert(index == parameter_count, "invalid parameter count");
duke@435 646 if (return_type != NULL) {
duke@435 647 // Collect return type as well
duke@435 648 assert(ss.at_return_type(), "return type should be present");
duke@435 649 *return_type = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle()));
duke@435 650 }
duke@435 651 return mirrors;
duke@435 652 }
duke@435 653
duke@435 654 objArrayHandle Reflection::get_exception_types(methodHandle method, TRAPS) {
duke@435 655 return method->resolved_checked_exceptions(CHECK_(objArrayHandle()));
duke@435 656 }
duke@435 657
duke@435 658
duke@435 659 Handle Reflection::new_type(symbolHandle signature, KlassHandle k, TRAPS) {
duke@435 660 // Basic types
duke@435 661 BasicType type = vmSymbols::signature_type(signature());
duke@435 662 if (type != T_OBJECT) {
duke@435 663 return Handle(THREAD, Universe::java_mirror(type));
duke@435 664 }
duke@435 665
duke@435 666 oop loader = instanceKlass::cast(k())->class_loader();
duke@435 667 oop protection_domain = Klass::cast(k())->protection_domain();
duke@435 668 klassOop result = SystemDictionary::resolve_or_fail(signature,
duke@435 669 Handle(THREAD, loader),
duke@435 670 Handle(THREAD, protection_domain),
duke@435 671 true, CHECK_(Handle()));
duke@435 672
duke@435 673 if (TraceClassResolution) {
duke@435 674 trace_class_resolution(result);
duke@435 675 }
duke@435 676
duke@435 677 oop nt = Klass::cast(result)->java_mirror();
duke@435 678 return Handle(THREAD, nt);
duke@435 679 }
duke@435 680
duke@435 681
duke@435 682 oop Reflection::new_method(methodHandle method, bool intern_name, bool for_constant_pool_access, TRAPS) {
duke@435 683 // In jdk1.2.x, getMethods on an interface erroneously includes <clinit>, thus the complicated assert.
duke@435 684 // Also allow sun.reflect.ConstantPool to refer to <clinit> methods as java.lang.reflect.Methods.
duke@435 685 assert(!method()->is_initializer() ||
duke@435 686 (for_constant_pool_access && method()->is_static()) ||
duke@435 687 (method()->name() == vmSymbols::class_initializer_name()
duke@435 688 && Klass::cast(method()->method_holder())->is_interface() && JDK_Version::is_jdk12x_version()), "should call new_constructor instead");
duke@435 689 instanceKlassHandle holder (THREAD, method->method_holder());
duke@435 690 int slot = method->method_idnum();
duke@435 691
duke@435 692 symbolHandle signature (THREAD, method->signature());
duke@435 693 int parameter_count = ArgumentCount(signature).size();
duke@435 694 oop return_type_oop = NULL;
duke@435 695 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, &return_type_oop, CHECK_NULL);
duke@435 696 if (parameter_types.is_null() || return_type_oop == NULL) return NULL;
duke@435 697
duke@435 698 Handle return_type(THREAD, return_type_oop);
duke@435 699
duke@435 700 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL);
duke@435 701
duke@435 702 if (exception_types.is_null()) return NULL;
duke@435 703
duke@435 704 symbolHandle method_name(THREAD, method->name());
duke@435 705 Handle name;
duke@435 706 if (intern_name) {
duke@435 707 // intern_name is only true with UseNewReflection
duke@435 708 oop name_oop = StringTable::intern(method_name(), CHECK_NULL);
duke@435 709 name = Handle(THREAD, name_oop);
duke@435 710 } else {
duke@435 711 name = java_lang_String::create_from_symbol(method_name, CHECK_NULL);
duke@435 712 }
duke@435 713 if (name.is_null()) return NULL;
duke@435 714
duke@435 715 int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
duke@435 716
duke@435 717 Handle mh = java_lang_reflect_Method::create(CHECK_NULL);
duke@435 718
duke@435 719 java_lang_reflect_Method::set_clazz(mh(), holder->java_mirror());
duke@435 720 java_lang_reflect_Method::set_slot(mh(), slot);
duke@435 721 java_lang_reflect_Method::set_name(mh(), name());
duke@435 722 java_lang_reflect_Method::set_return_type(mh(), return_type());
duke@435 723 java_lang_reflect_Method::set_parameter_types(mh(), parameter_types());
duke@435 724 java_lang_reflect_Method::set_exception_types(mh(), exception_types());
duke@435 725 java_lang_reflect_Method::set_modifiers(mh(), modifiers);
duke@435 726 java_lang_reflect_Method::set_override(mh(), false);
duke@435 727 if (java_lang_reflect_Method::has_signature_field() &&
duke@435 728 method->generic_signature() != NULL) {
duke@435 729 symbolHandle gs(THREAD, method->generic_signature());
duke@435 730 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL);
duke@435 731 java_lang_reflect_Method::set_signature(mh(), sig());
duke@435 732 }
duke@435 733 if (java_lang_reflect_Method::has_annotations_field()) {
duke@435 734 java_lang_reflect_Method::set_annotations(mh(), method->annotations());
duke@435 735 }
duke@435 736 if (java_lang_reflect_Method::has_parameter_annotations_field()) {
duke@435 737 java_lang_reflect_Method::set_parameter_annotations(mh(), method->parameter_annotations());
duke@435 738 }
duke@435 739 if (java_lang_reflect_Method::has_annotation_default_field()) {
duke@435 740 java_lang_reflect_Method::set_annotation_default(mh(), method->annotation_default());
duke@435 741 }
duke@435 742 return mh();
duke@435 743 }
duke@435 744
duke@435 745
duke@435 746 oop Reflection::new_constructor(methodHandle method, TRAPS) {
duke@435 747 assert(method()->is_initializer(), "should call new_method instead");
duke@435 748
duke@435 749 instanceKlassHandle holder (THREAD, method->method_holder());
duke@435 750 int slot = method->method_idnum();
duke@435 751
duke@435 752 symbolHandle signature (THREAD, method->signature());
duke@435 753 int parameter_count = ArgumentCount(signature).size();
duke@435 754 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, NULL, CHECK_NULL);
duke@435 755 if (parameter_types.is_null()) return NULL;
duke@435 756
duke@435 757 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL);
duke@435 758 if (exception_types.is_null()) return NULL;
duke@435 759
duke@435 760 int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
duke@435 761
duke@435 762 Handle ch = java_lang_reflect_Constructor::create(CHECK_NULL);
duke@435 763
duke@435 764 java_lang_reflect_Constructor::set_clazz(ch(), holder->java_mirror());
duke@435 765 java_lang_reflect_Constructor::set_slot(ch(), slot);
duke@435 766 java_lang_reflect_Constructor::set_parameter_types(ch(), parameter_types());
duke@435 767 java_lang_reflect_Constructor::set_exception_types(ch(), exception_types());
duke@435 768 java_lang_reflect_Constructor::set_modifiers(ch(), modifiers);
duke@435 769 java_lang_reflect_Constructor::set_override(ch(), false);
duke@435 770 if (java_lang_reflect_Constructor::has_signature_field() &&
duke@435 771 method->generic_signature() != NULL) {
duke@435 772 symbolHandle gs(THREAD, method->generic_signature());
duke@435 773 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL);
duke@435 774 java_lang_reflect_Constructor::set_signature(ch(), sig());
duke@435 775 }
duke@435 776 if (java_lang_reflect_Constructor::has_annotations_field()) {
duke@435 777 java_lang_reflect_Constructor::set_annotations(ch(), method->annotations());
duke@435 778 }
duke@435 779 if (java_lang_reflect_Constructor::has_parameter_annotations_field()) {
duke@435 780 java_lang_reflect_Constructor::set_parameter_annotations(ch(), method->parameter_annotations());
duke@435 781 }
duke@435 782 return ch();
duke@435 783 }
duke@435 784
duke@435 785
duke@435 786 oop Reflection::new_field(fieldDescriptor* fd, bool intern_name, TRAPS) {
duke@435 787 symbolHandle field_name(THREAD, fd->name());
duke@435 788 Handle name;
duke@435 789 if (intern_name) {
duke@435 790 // intern_name is only true with UseNewReflection
duke@435 791 oop name_oop = StringTable::intern(field_name(), CHECK_NULL);
duke@435 792 name = Handle(THREAD, name_oop);
duke@435 793 } else {
duke@435 794 name = java_lang_String::create_from_symbol(field_name, CHECK_NULL);
duke@435 795 }
duke@435 796 symbolHandle signature (THREAD, fd->signature());
duke@435 797 KlassHandle holder (THREAD, fd->field_holder());
duke@435 798 Handle type = new_type(signature, holder, CHECK_NULL);
duke@435 799 Handle rh = java_lang_reflect_Field::create(CHECK_NULL);
duke@435 800
duke@435 801 java_lang_reflect_Field::set_clazz(rh(), Klass::cast(fd->field_holder())->java_mirror());
duke@435 802 java_lang_reflect_Field::set_slot(rh(), fd->index());
duke@435 803 java_lang_reflect_Field::set_name(rh(), name());
duke@435 804 java_lang_reflect_Field::set_type(rh(), type());
duke@435 805 // Note the ACC_ANNOTATION bit, which is a per-class access flag, is never set here.
duke@435 806 java_lang_reflect_Field::set_modifiers(rh(), fd->access_flags().as_int() & JVM_RECOGNIZED_FIELD_MODIFIERS);
duke@435 807 java_lang_reflect_Field::set_override(rh(), false);
duke@435 808 if (java_lang_reflect_Field::has_signature_field() &&
duke@435 809 fd->generic_signature() != NULL) {
duke@435 810 symbolHandle gs(THREAD, fd->generic_signature());
duke@435 811 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL);
duke@435 812 java_lang_reflect_Field::set_signature(rh(), sig());
duke@435 813 }
duke@435 814 if (java_lang_reflect_Field::has_annotations_field()) {
duke@435 815 java_lang_reflect_Field::set_annotations(rh(), fd->annotations());
duke@435 816 }
duke@435 817 return rh();
duke@435 818 }
duke@435 819
duke@435 820
duke@435 821 //---------------------------------------------------------------------------
duke@435 822 //
duke@435 823 // Supporting routines for old native code-based reflection (pre-JDK 1.4).
duke@435 824 //
duke@435 825 // See reflection.hpp for details.
duke@435 826 //
duke@435 827 //---------------------------------------------------------------------------
duke@435 828
duke@435 829 #ifdef SUPPORT_OLD_REFLECTION
duke@435 830
duke@435 831 methodHandle Reflection::resolve_interface_call(instanceKlassHandle klass, methodHandle method,
duke@435 832 KlassHandle recv_klass, Handle receiver, TRAPS) {
duke@435 833 assert(!method.is_null() , "method should not be null");
duke@435 834
duke@435 835 CallInfo info;
duke@435 836 symbolHandle signature (THREAD, method->signature());
duke@435 837 symbolHandle name (THREAD, method->name());
duke@435 838 LinkResolver::resolve_interface_call(info, receiver, recv_klass, klass,
duke@435 839 name, signature,
duke@435 840 KlassHandle(), false, true,
duke@435 841 CHECK_(methodHandle()));
duke@435 842 return info.selected_method();
duke@435 843 }
duke@435 844
duke@435 845
duke@435 846 oop Reflection::invoke(instanceKlassHandle klass, methodHandle reflected_method,
duke@435 847 Handle receiver, bool override, objArrayHandle ptypes,
duke@435 848 BasicType rtype, objArrayHandle args, bool is_method_invoke, TRAPS) {
duke@435 849 ResourceMark rm(THREAD);
duke@435 850
duke@435 851 methodHandle method; // actual method to invoke
duke@435 852 KlassHandle target_klass; // target klass, receiver's klass for non-static
duke@435 853
duke@435 854 // Ensure klass is initialized
duke@435 855 klass->initialize(CHECK_NULL);
duke@435 856
duke@435 857 bool is_static = reflected_method->is_static();
duke@435 858 if (is_static) {
duke@435 859 // ignore receiver argument
duke@435 860 method = reflected_method;
duke@435 861 target_klass = klass;
duke@435 862 } else {
duke@435 863 // check for null receiver
duke@435 864 if (receiver.is_null()) {
duke@435 865 THROW_0(vmSymbols::java_lang_NullPointerException());
duke@435 866 }
duke@435 867 // Check class of receiver against class declaring method
duke@435 868 if (!receiver->is_a(klass())) {
duke@435 869 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "object is not an instance of declaring class");
duke@435 870 }
duke@435 871 // target klass is receiver's klass
duke@435 872 target_klass = KlassHandle(THREAD, receiver->klass());
duke@435 873 // no need to resolve if method is private or <init>
duke@435 874 if (reflected_method->is_private() || reflected_method->name() == vmSymbols::object_initializer_name()) {
duke@435 875 method = reflected_method;
duke@435 876 } else {
duke@435 877 // resolve based on the receiver
duke@435 878 if (instanceKlass::cast(reflected_method->method_holder())->is_interface()) {
duke@435 879 // resolve interface call
duke@435 880 if (ReflectionWrapResolutionErrors) {
duke@435 881 // new default: 6531596
duke@435 882 // Match resolution errors with those thrown due to reflection inlining
duke@435 883 // Linktime resolution & IllegalAccessCheck already done by Class.getMethod()
duke@435 884 method = resolve_interface_call(klass, reflected_method, target_klass, receiver, THREAD);
duke@435 885 if (HAS_PENDING_EXCEPTION) {
duke@435 886 // Method resolution threw an exception; wrap it in an InvocationTargetException
duke@435 887 oop resolution_exception = PENDING_EXCEPTION;
duke@435 888 CLEAR_PENDING_EXCEPTION;
duke@435 889 JavaCallArguments args(Handle(THREAD, resolution_exception));
duke@435 890 THROW_ARG_0(vmSymbolHandles::java_lang_reflect_InvocationTargetException(),
duke@435 891 vmSymbolHandles::throwable_void_signature(),
duke@435 892 &args);
duke@435 893 }
duke@435 894 } else {
duke@435 895 method = resolve_interface_call(klass, reflected_method, target_klass, receiver, CHECK_(NULL));
duke@435 896 }
duke@435 897 } else {
duke@435 898 // if the method can be overridden, we resolve using the vtable index.
duke@435 899 int index = reflected_method->vtable_index();
duke@435 900 method = reflected_method;
duke@435 901 if (index != methodOopDesc::nonvirtual_vtable_index) {
duke@435 902 // target_klass might be an arrayKlassOop but all vtables start at
duke@435 903 // the same place. The cast is to avoid virtual call and assertion.
duke@435 904 instanceKlass* inst = (instanceKlass*)target_klass()->klass_part();
duke@435 905 method = methodHandle(THREAD, inst->method_at_vtable(index));
duke@435 906 }
duke@435 907 if (!method.is_null()) {
duke@435 908 // Check for abstract methods as well
duke@435 909 if (method->is_abstract()) {
duke@435 910 // new default: 6531596
duke@435 911 if (ReflectionWrapResolutionErrors) {
duke@435 912 ResourceMark rm(THREAD);
duke@435 913 Handle h_origexception = Exceptions::new_exception(THREAD,
duke@435 914 vmSymbols::java_lang_AbstractMethodError(),
duke@435 915 methodOopDesc::name_and_sig_as_C_string(Klass::cast(target_klass()),
duke@435 916 method->name(),
duke@435 917 method->signature()));
duke@435 918 JavaCallArguments args(h_origexception);
duke@435 919 THROW_ARG_0(vmSymbolHandles::java_lang_reflect_InvocationTargetException(),
duke@435 920 vmSymbolHandles::throwable_void_signature(),
duke@435 921 &args);
duke@435 922 } else {
duke@435 923 ResourceMark rm(THREAD);
duke@435 924 THROW_MSG_0(vmSymbols::java_lang_AbstractMethodError(),
duke@435 925 methodOopDesc::name_and_sig_as_C_string(Klass::cast(target_klass()),
duke@435 926 method->name(),
duke@435 927 method->signature()));
duke@435 928 }
duke@435 929 }
duke@435 930 }
duke@435 931 }
duke@435 932 }
duke@435 933 }
duke@435 934
duke@435 935 // I believe this is a ShouldNotGetHere case which requires
duke@435 936 // an internal vtable bug. If you ever get this please let Karen know.
duke@435 937 if (method.is_null()) {
duke@435 938 ResourceMark rm(THREAD);
duke@435 939 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(),
duke@435 940 methodOopDesc::name_and_sig_as_C_string(Klass::cast(klass()),
duke@435 941 reflected_method->name(),
duke@435 942 reflected_method->signature()));
duke@435 943 }
duke@435 944
duke@435 945 // In the JDK 1.4 reflection implementation, the security check is
duke@435 946 // done at the Java level
duke@435 947 if (!(JDK_Version::is_gte_jdk14x_version() && UseNewReflection)) {
duke@435 948
duke@435 949 // Access checking (unless overridden by Method)
duke@435 950 if (!override) {
duke@435 951 if (!(klass->is_public() && reflected_method->is_public())) {
duke@435 952 bool access = Reflection::reflect_check_access(klass(), reflected_method->access_flags(), target_klass(), is_method_invoke, CHECK_NULL);
duke@435 953 if (!access) {
duke@435 954 return NULL; // exception
duke@435 955 }
duke@435 956 }
duke@435 957 }
duke@435 958
duke@435 959 } // !(Universe::is_gte_jdk14x_version() && UseNewReflection)
duke@435 960
duke@435 961 assert(ptypes->is_objArray(), "just checking");
duke@435 962 int args_len = args.is_null() ? 0 : args->length();
duke@435 963 // Check number of arguments
duke@435 964 if (ptypes->length() != args_len) {
duke@435 965 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "wrong number of arguments");
duke@435 966 }
duke@435 967
duke@435 968 // Create object to contain parameters for the JavaCall
duke@435 969 JavaCallArguments java_args(method->size_of_parameters());
duke@435 970
duke@435 971 if (!is_static) {
duke@435 972 java_args.push_oop(receiver);
duke@435 973 }
duke@435 974
duke@435 975 for (int i = 0; i < args_len; i++) {
duke@435 976 oop type_mirror = ptypes->obj_at(i);
duke@435 977 oop arg = args->obj_at(i);
duke@435 978 if (java_lang_Class::is_primitive(type_mirror)) {
duke@435 979 jvalue value;
duke@435 980 BasicType ptype = basic_type_mirror_to_basic_type(type_mirror, CHECK_NULL);
duke@435 981 BasicType atype = unbox_for_primitive(arg, &value, CHECK_NULL);
duke@435 982 if (ptype != atype) {
duke@435 983 widen(&value, atype, ptype, CHECK_NULL);
duke@435 984 }
duke@435 985 switch (ptype) {
duke@435 986 case T_BOOLEAN: java_args.push_int(value.z); break;
duke@435 987 case T_CHAR: java_args.push_int(value.c); break;
duke@435 988 case T_BYTE: java_args.push_int(value.b); break;
duke@435 989 case T_SHORT: java_args.push_int(value.s); break;
duke@435 990 case T_INT: java_args.push_int(value.i); break;
duke@435 991 case T_LONG: java_args.push_long(value.j); break;
duke@435 992 case T_FLOAT: java_args.push_float(value.f); break;
duke@435 993 case T_DOUBLE: java_args.push_double(value.d); break;
duke@435 994 default:
duke@435 995 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");
duke@435 996 }
duke@435 997 } else {
duke@435 998 if (arg != NULL) {
duke@435 999 klassOop k = java_lang_Class::as_klassOop(type_mirror);
duke@435 1000 if (!arg->is_a(k)) {
duke@435 1001 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");
duke@435 1002 }
duke@435 1003 }
duke@435 1004 Handle arg_handle(THREAD, arg); // Create handle for argument
duke@435 1005 java_args.push_oop(arg_handle); // Push handle
duke@435 1006 }
duke@435 1007 }
duke@435 1008
duke@435 1009 assert(java_args.size_of_parameters() == method->size_of_parameters(), "just checking");
duke@435 1010
duke@435 1011 // All oops (including receiver) is passed in as Handles. An potential oop is returned as an
duke@435 1012 // oop (i.e., NOT as an handle)
duke@435 1013 JavaValue result(rtype);
duke@435 1014 JavaCalls::call(&result, method, &java_args, THREAD);
duke@435 1015
duke@435 1016 if (HAS_PENDING_EXCEPTION) {
duke@435 1017 // Method threw an exception; wrap it in an InvocationTargetException
duke@435 1018 oop target_exception = PENDING_EXCEPTION;
duke@435 1019 CLEAR_PENDING_EXCEPTION;
duke@435 1020 JavaCallArguments args(Handle(THREAD, target_exception));
duke@435 1021 THROW_ARG_0(vmSymbolHandles::java_lang_reflect_InvocationTargetException(),
duke@435 1022 vmSymbolHandles::throwable_void_signature(),
duke@435 1023 &args);
duke@435 1024 } else {
duke@435 1025 if (rtype == T_BOOLEAN || rtype == T_BYTE || rtype == T_CHAR || rtype == T_SHORT)
duke@435 1026 narrow((jvalue*) result.get_value_addr(), rtype, CHECK_NULL);
duke@435 1027 return box((jvalue*) result.get_value_addr(), rtype, CHECK_NULL);
duke@435 1028 }
duke@435 1029 }
duke@435 1030
duke@435 1031
duke@435 1032 void Reflection::narrow(jvalue* value, BasicType narrow_type, TRAPS) {
duke@435 1033 switch (narrow_type) {
duke@435 1034 case T_BOOLEAN:
duke@435 1035 value->z = (jboolean) value->i;
duke@435 1036 return;
duke@435 1037 case T_BYTE:
duke@435 1038 value->b = (jbyte) value->i;
duke@435 1039 return;
duke@435 1040 case T_CHAR:
duke@435 1041 value->c = (jchar) value->i;
duke@435 1042 return;
duke@435 1043 case T_SHORT:
duke@435 1044 value->s = (jshort) value->i;
duke@435 1045 return;
duke@435 1046 default:
duke@435 1047 break; // fail
duke@435 1048 }
duke@435 1049 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");
duke@435 1050 }
duke@435 1051
duke@435 1052
duke@435 1053 BasicType Reflection::basic_type_mirror_to_basic_type(oop basic_type_mirror, TRAPS) {
duke@435 1054 assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking");
duke@435 1055 return java_lang_Class::primitive_type(basic_type_mirror);
duke@435 1056 }
duke@435 1057
duke@435 1058
duke@435 1059 bool Reflection::match_parameter_types(methodHandle method, objArrayHandle types, int parameter_count, TRAPS) {
duke@435 1060 int types_len = types.is_null() ? 0 : types->length();
duke@435 1061 if (types_len != parameter_count) return false;
duke@435 1062 if (parameter_count > 0) {
duke@435 1063 objArrayHandle method_types = get_parameter_types(method, parameter_count, NULL, CHECK_false);
duke@435 1064 for (int index = 0; index < parameter_count; index++) {
duke@435 1065 if (types->obj_at(index) != method_types->obj_at(index)) {
duke@435 1066 return false;
duke@435 1067 }
duke@435 1068 }
duke@435 1069 }
duke@435 1070 return true;
duke@435 1071 }
duke@435 1072
duke@435 1073
duke@435 1074 oop Reflection::new_field(FieldStream* st, TRAPS) {
duke@435 1075 symbolHandle field_name(THREAD, st->name());
duke@435 1076 Handle name = java_lang_String::create_from_symbol(field_name, CHECK_NULL);
duke@435 1077 symbolHandle signature(THREAD, st->signature());
duke@435 1078 Handle type = new_type(signature, st->klass(), CHECK_NULL);
duke@435 1079 Handle rh = java_lang_reflect_Field::create(CHECK_NULL);
duke@435 1080 oop result = rh();
duke@435 1081
duke@435 1082 java_lang_reflect_Field::set_clazz(result, st->klass()->java_mirror());
duke@435 1083 java_lang_reflect_Field::set_slot(result, st->index());
duke@435 1084 java_lang_reflect_Field::set_name(result, name());
duke@435 1085 java_lang_reflect_Field::set_type(result, type());
duke@435 1086 // Note the ACC_ANNOTATION bit, which is a per-class access flag, is never set here.
duke@435 1087 java_lang_reflect_Field::set_modifiers(result, st->access_flags().as_int() & JVM_RECOGNIZED_FIELD_MODIFIERS);
duke@435 1088 java_lang_reflect_Field::set_override(result, false);
duke@435 1089 return result;
duke@435 1090 }
duke@435 1091
duke@435 1092
duke@435 1093 bool Reflection::resolve_field(Handle field_mirror, Handle& receiver, fieldDescriptor* fd, bool check_final, TRAPS) {
duke@435 1094 if (field_mirror.is_null()) {
duke@435 1095 THROW_(vmSymbols::java_lang_NullPointerException(), false);
duke@435 1096 }
duke@435 1097
duke@435 1098 instanceKlassHandle klass (THREAD, java_lang_Class::as_klassOop(java_lang_reflect_Field::clazz(field_mirror())));
duke@435 1099 int slot = java_lang_reflect_Field::slot(field_mirror());
duke@435 1100
duke@435 1101 // Ensure klass is initialized
duke@435 1102 klass->initialize(CHECK_false);
duke@435 1103 fd->initialize(klass(), slot);
duke@435 1104
duke@435 1105 bool is_static = fd->is_static();
duke@435 1106 KlassHandle receiver_klass;
duke@435 1107
duke@435 1108 if (is_static) {
duke@435 1109 receiver = KlassHandle(THREAD, klass());
duke@435 1110 receiver_klass = klass;
duke@435 1111 } else {
duke@435 1112 // Check object is a non-null instance of declaring class
duke@435 1113 if (receiver.is_null()) {
duke@435 1114 THROW_(vmSymbols::java_lang_NullPointerException(), false);
duke@435 1115 }
duke@435 1116 if (!receiver->is_a(klass())) {
duke@435 1117 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), "object is not an instance of declaring class", false);
duke@435 1118 }
duke@435 1119 receiver_klass = KlassHandle(THREAD, receiver->klass());
duke@435 1120 }
duke@435 1121
duke@435 1122 // Access checking (unless overridden by Field)
duke@435 1123 if (!java_lang_reflect_Field::override(field_mirror())) {
duke@435 1124 if (!(klass->is_public() && fd->is_public())) {
duke@435 1125 bool access_check = reflect_check_access(klass(), fd->access_flags(), receiver_klass(), false, CHECK_false);
duke@435 1126 if (!access_check) {
duke@435 1127 return false; // exception
duke@435 1128 }
duke@435 1129 }
duke@435 1130 }
duke@435 1131
duke@435 1132 if (check_final && fd->is_final()) {
duke@435 1133 // In 1.3 we always throw an error when attempting to set a final field.
duke@435 1134 // In 1.2.x, this was allowed in the override bit was set by calling Field.setAccessible(true).
duke@435 1135 // We currently maintain backwards compatibility. See bug 4250960.
duke@435 1136 bool strict_final_check = !JDK_Version::is_jdk12x_version();
duke@435 1137 if (strict_final_check || !java_lang_reflect_Field::override(field_mirror())) {
duke@435 1138 THROW_MSG_(vmSymbols::java_lang_IllegalAccessException(), "field is final", false);
duke@435 1139 }
duke@435 1140 }
duke@435 1141 return true;
duke@435 1142 }
duke@435 1143
duke@435 1144
duke@435 1145 BasicType Reflection::field_get(jvalue* value, fieldDescriptor* fd, Handle receiver) {
duke@435 1146 BasicType field_type = fd->field_type();
duke@435 1147 int offset = fd->offset();
duke@435 1148 switch (field_type) {
duke@435 1149 case T_BOOLEAN:
duke@435 1150 value->z = receiver->bool_field(offset);
duke@435 1151 break;
duke@435 1152 case T_CHAR:
duke@435 1153 value->c = receiver->char_field(offset);
duke@435 1154 break;
duke@435 1155 case T_FLOAT:
duke@435 1156 value->f = receiver->float_field(offset);
duke@435 1157 break;
duke@435 1158 case T_DOUBLE:
duke@435 1159 value->d = receiver->double_field(offset);
duke@435 1160 break;
duke@435 1161 case T_BYTE:
duke@435 1162 value->b = receiver->byte_field(offset);
duke@435 1163 break;
duke@435 1164 case T_SHORT:
duke@435 1165 value->s = receiver->short_field(offset);
duke@435 1166 break;
duke@435 1167 case T_INT:
duke@435 1168 value->i = receiver->int_field(offset);
duke@435 1169 break;
duke@435 1170 case T_LONG:
duke@435 1171 value->j = receiver->long_field(offset);
duke@435 1172 break;
duke@435 1173 case T_OBJECT:
duke@435 1174 case T_ARRAY:
duke@435 1175 value->l = (jobject) receiver->obj_field(offset);
duke@435 1176 break;
duke@435 1177 default:
duke@435 1178 return T_ILLEGAL;
duke@435 1179 }
duke@435 1180 return field_type;
duke@435 1181 }
duke@435 1182
duke@435 1183
duke@435 1184 void Reflection::field_set(jvalue* value, fieldDescriptor* fd, Handle receiver, BasicType value_type, TRAPS) {
duke@435 1185 BasicType field_type = fd->field_type();
duke@435 1186 if (field_type != value_type) {
duke@435 1187 widen(value, value_type, field_type, CHECK);
duke@435 1188 }
duke@435 1189
duke@435 1190 int offset = fd->offset();
duke@435 1191 switch (field_type) {
duke@435 1192 case T_BOOLEAN:
duke@435 1193 receiver->bool_field_put(offset, value->z);
duke@435 1194 break;
duke@435 1195 case T_CHAR:
duke@435 1196 receiver->char_field_put(offset, value->c);
duke@435 1197 break;
duke@435 1198 case T_FLOAT:
duke@435 1199 receiver->float_field_put(offset, value->f);
duke@435 1200 break;
duke@435 1201 case T_DOUBLE:
duke@435 1202 receiver->double_field_put(offset, value->d);
duke@435 1203 break;
duke@435 1204 case T_BYTE:
duke@435 1205 receiver->byte_field_put(offset, value->b);
duke@435 1206 break;
duke@435 1207 case T_SHORT:
duke@435 1208 receiver->short_field_put(offset, value->s);
duke@435 1209 break;
duke@435 1210 case T_INT:
duke@435 1211 receiver->int_field_put(offset, value->i);
duke@435 1212 break;
duke@435 1213 case T_LONG:
duke@435 1214 receiver->long_field_put(offset, value->j);
duke@435 1215 break;
duke@435 1216 case T_OBJECT:
duke@435 1217 case T_ARRAY: {
duke@435 1218 Handle obj(THREAD, (oop) value->l);
duke@435 1219 if (obj.not_null()) {
duke@435 1220 symbolHandle signature(THREAD, fd->signature());
duke@435 1221 Handle loader (THREAD, fd->loader());
duke@435 1222 Handle protect (THREAD, Klass::cast(fd->field_holder())->protection_domain());
duke@435 1223 klassOop k = SystemDictionary::resolve_or_fail(signature, loader, protect, true, CHECK); // may block
duke@435 1224 if (!obj->is_a(k)) {
duke@435 1225 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "field type mismatch");
duke@435 1226 }
duke@435 1227 }
duke@435 1228 receiver->obj_field_put(offset, obj());
duke@435 1229 break;
duke@435 1230 }
duke@435 1231 default:
duke@435 1232 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "field type mismatch");
duke@435 1233 }
duke@435 1234 }
duke@435 1235
duke@435 1236
duke@435 1237 oop Reflection::reflect_field(oop mirror, symbolOop field_name, jint which, TRAPS) {
duke@435 1238 // Exclude primitive types and array types
duke@435 1239 if (java_lang_Class::is_primitive(mirror)) return NULL;
duke@435 1240 if (Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array()) return NULL;
duke@435 1241
duke@435 1242 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(mirror));
duke@435 1243 bool local_fields_only = (which == DECLARED);
duke@435 1244
duke@435 1245 // Ensure class is linked
duke@435 1246 k->link_class(CHECK_NULL);
duke@435 1247
duke@435 1248 // Search class and interface fields
duke@435 1249 for (FieldStream st(k, local_fields_only, false); !st.eos(); st.next()) {
duke@435 1250 if (st.name() == field_name) {
duke@435 1251 if (local_fields_only || st.access_flags().is_public()) {
duke@435 1252 return new_field(&st, THREAD);
duke@435 1253 }
duke@435 1254 }
duke@435 1255 }
duke@435 1256
duke@435 1257 return NULL;
duke@435 1258 }
duke@435 1259
duke@435 1260
duke@435 1261 objArrayOop Reflection::reflect_fields(oop mirror, jint which, TRAPS) {
duke@435 1262 // Exclude primitive types and array types
duke@435 1263 if (java_lang_Class::is_primitive(mirror)
duke@435 1264 || Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array()) {
duke@435 1265 symbolHandle name = vmSymbolHandles::java_lang_reflect_Field();
duke@435 1266 klassOop klass = SystemDictionary::resolve_or_fail(name, true, CHECK_NULL);
duke@435 1267 return oopFactory::new_objArray(klass, 0, CHECK_NULL); // Return empty array
duke@435 1268 }
duke@435 1269
duke@435 1270 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(mirror));
duke@435 1271
duke@435 1272 // Ensure class is linked
duke@435 1273 k->link_class(CHECK_NULL);
duke@435 1274
duke@435 1275 bool local_fields_only = (which == DECLARED);
duke@435 1276 int count = 0;
duke@435 1277 { // Compute fields count for class and interface fields
duke@435 1278 for (FieldStream st(k, local_fields_only, false); !st.eos(); st.next()) {
duke@435 1279 if (local_fields_only || st.access_flags().is_public()) {
duke@435 1280 count++;
duke@435 1281 }
duke@435 1282 }
duke@435 1283 }
duke@435 1284
duke@435 1285 // Allocate result
duke@435 1286 symbolHandle name = vmSymbolHandles::java_lang_reflect_Field();
duke@435 1287 klassOop klass = SystemDictionary::resolve_or_fail(name, true, CHECK_NULL);
duke@435 1288 objArrayOop r = oopFactory::new_objArray(klass, count, CHECK_NULL);
duke@435 1289 objArrayHandle result (THREAD, r);
duke@435 1290
duke@435 1291 // Fill in results backwards
duke@435 1292 {
duke@435 1293 for (FieldStream st(k, local_fields_only, false); !st.eos(); st.next()) {
duke@435 1294 if (local_fields_only || st.access_flags().is_public()) {
duke@435 1295 oop field = new_field(&st, CHECK_NULL);
duke@435 1296 result->obj_at_put(--count, field);
duke@435 1297 }
duke@435 1298 }
duke@435 1299 assert(count == 0, "just checking");
duke@435 1300 }
duke@435 1301 return result();
duke@435 1302 }
duke@435 1303
duke@435 1304
duke@435 1305 oop Reflection::reflect_method(oop mirror, symbolHandle method_name, objArrayHandle types, jint which, TRAPS) {
duke@435 1306 if (java_lang_Class::is_primitive(mirror)) return NULL;
duke@435 1307 klassOop klass = java_lang_Class::as_klassOop(mirror);
duke@435 1308 if (Klass::cast(klass)->oop_is_array() && which == MEMBER_DECLARED) return NULL;
duke@435 1309
duke@435 1310 if (Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array()) {
duke@435 1311 klass = SystemDictionary::object_klass();
duke@435 1312 }
duke@435 1313 instanceKlassHandle h_k(THREAD, klass);
duke@435 1314
duke@435 1315 // Ensure klass is linked (need not be initialized)
duke@435 1316 h_k->link_class(CHECK_NULL);
duke@435 1317
duke@435 1318 // For interfaces include static initializers under jdk1.2.x (since classic does that)
duke@435 1319 bool include_clinit = JDK_Version::is_jdk12x_version() && h_k->is_interface();
duke@435 1320
duke@435 1321 switch (which) {
duke@435 1322 case MEMBER_PUBLIC:
duke@435 1323 // First the public non-static methods (works if method holder is an interface)
duke@435 1324 // Note that we can ignore checks for overridden methods, since we go up the hierarchy.
duke@435 1325 {
duke@435 1326 for (MethodStream st(h_k, false, false); !st.eos(); st.next()) {
duke@435 1327 methodHandle m(THREAD, st.method());
duke@435 1328 // For interfaces include static initializers since classic does that!
duke@435 1329 if (method_name() == m->name() && (include_clinit || (m->is_public() && !m->is_static() && !m->is_initializer()))) {
duke@435 1330 symbolHandle signature(THREAD, m->signature());
duke@435 1331 bool parameter_match = match_parameter_types(m, types, ArgumentCount(signature).size(), CHECK_NULL);
duke@435 1332 if (parameter_match) {
duke@435 1333 return new_method(m, false, false, THREAD);
duke@435 1334 }
duke@435 1335 }
duke@435 1336 }
duke@435 1337 }
duke@435 1338 // Then the public static methods (works if method holder is an interface)
duke@435 1339 {
duke@435 1340 for (MethodStream st(h_k, false, false); !st.eos(); st.next()) {
duke@435 1341 methodHandle m(THREAD, st.method());
duke@435 1342 if (method_name() == m->name() && m->is_public() && m->is_static() && !m->is_initializer()) {
duke@435 1343 symbolHandle signature(THREAD, m->signature());
duke@435 1344 bool parameter_match = match_parameter_types(m, types, ArgumentCount(signature).size(), CHECK_NULL);
duke@435 1345 if (parameter_match) {
duke@435 1346 return new_method(m, false, false, THREAD);
duke@435 1347 }
duke@435 1348 }
duke@435 1349 }
duke@435 1350 }
duke@435 1351 break;
duke@435 1352 case MEMBER_DECLARED:
duke@435 1353 // All local methods
duke@435 1354 {
duke@435 1355 for (MethodStream st(h_k, true, true); !st.eos(); st.next()) {
duke@435 1356 methodHandle m(THREAD, st.method());
duke@435 1357 if (method_name() == m->name() && !m->is_initializer()) {
duke@435 1358 symbolHandle signature(THREAD, m->signature());
duke@435 1359 bool parameter_match = match_parameter_types(m, types, ArgumentCount(signature).size(), CHECK_NULL);
duke@435 1360 if (parameter_match) {
duke@435 1361 return new_method(m, false, false, THREAD);
duke@435 1362 }
duke@435 1363 }
duke@435 1364 }
duke@435 1365 }
duke@435 1366 break;
duke@435 1367 default:
duke@435 1368 break;
duke@435 1369 }
duke@435 1370 return NULL;
duke@435 1371 }
duke@435 1372
duke@435 1373
duke@435 1374 objArrayOop Reflection::reflect_methods(oop mirror, jint which, TRAPS) {
duke@435 1375 // Exclude primitive types
duke@435 1376 if (java_lang_Class::is_primitive(mirror) ||
duke@435 1377 (Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array() && (which == MEMBER_DECLARED))) {
duke@435 1378 klassOop klass = SystemDictionary::reflect_method_klass();
duke@435 1379 return oopFactory::new_objArray(klass, 0, CHECK_NULL); // Return empty array
duke@435 1380 }
duke@435 1381
duke@435 1382 klassOop klass = java_lang_Class::as_klassOop(mirror);
duke@435 1383 if (Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array()) {
duke@435 1384 klass = SystemDictionary::object_klass();
duke@435 1385 }
duke@435 1386 instanceKlassHandle h_k(THREAD, klass);
duke@435 1387
duke@435 1388 // Ensure klass is linked (need not be initialized)
duke@435 1389 h_k->link_class(CHECK_NULL);
duke@435 1390
duke@435 1391 // We search the (super)interfaces only if h_k is an interface itself
duke@435 1392 bool is_interface = h_k->is_interface();
duke@435 1393
duke@435 1394 // For interfaces include static initializers under jdk1.2.x (since classic does that)
duke@435 1395 bool include_clinit = JDK_Version::is_jdk12x_version() && is_interface;
duke@435 1396
duke@435 1397 switch (which) {
duke@435 1398 case MEMBER_PUBLIC:
duke@435 1399 {
duke@435 1400
duke@435 1401 // Count public methods (non-static and static)
duke@435 1402 int count = 0;
duke@435 1403 {
duke@435 1404 for (MethodStream st(h_k, false, false); !st.eos(); st.next()) {
duke@435 1405 methodOop m = st.method();
duke@435 1406 // For interfaces include static initializers since classic does that!
duke@435 1407 if (include_clinit || (!m->is_initializer() && m->is_public() && !m->is_overridden_in(h_k()))) {
duke@435 1408 count++;
duke@435 1409 }
duke@435 1410 }
duke@435 1411 }
duke@435 1412
duke@435 1413 // Allocate result
duke@435 1414 klassOop klass = SystemDictionary::reflect_method_klass();
duke@435 1415 objArrayOop r = oopFactory::new_objArray(klass, count, CHECK_NULL);
duke@435 1416 objArrayHandle h_result (THREAD, r);
duke@435 1417
duke@435 1418 // Fill in results backwards
duke@435 1419 {
duke@435 1420 // First the non-static public methods
duke@435 1421 for (MethodStream st(h_k, false, false); !st.eos(); st.next()) {
duke@435 1422 methodHandle m (THREAD, st.method());
duke@435 1423 if (!m->is_static() && !m->is_initializer() && m->is_public() && !m->is_overridden_in(h_k())) {
duke@435 1424 oop method = new_method(m, false, false, CHECK_NULL);
duke@435 1425 if (method == NULL) {
duke@435 1426 return NULL;
duke@435 1427 } else {
duke@435 1428 h_result->obj_at_put(--count, method);
duke@435 1429 }
duke@435 1430 }
duke@435 1431 }
duke@435 1432 }
duke@435 1433 {
duke@435 1434 // Then the static public methods
duke@435 1435 for (MethodStream st(h_k, false, !is_interface); !st.eos(); st.next()) {
duke@435 1436 methodHandle m (THREAD, st.method());
duke@435 1437 if (m->is_static() && (include_clinit || (!m->is_initializer()) && m->is_public() && !m->is_overridden_in(h_k()))) {
duke@435 1438 oop method = new_method(m, false, false, CHECK_NULL);
duke@435 1439 if (method == NULL) {
duke@435 1440 return NULL;
duke@435 1441 } else {
duke@435 1442 h_result->obj_at_put(--count, method);
duke@435 1443 }
duke@435 1444 }
duke@435 1445 }
duke@435 1446 }
duke@435 1447
duke@435 1448 assert(count == 0, "just checking");
duke@435 1449 return h_result();
duke@435 1450 }
duke@435 1451
duke@435 1452 case MEMBER_DECLARED:
duke@435 1453 {
duke@435 1454 // Count all methods
duke@435 1455 int count = 0;
duke@435 1456 {
duke@435 1457 for (MethodStream st(h_k, true, !is_interface); !st.eos(); st.next()) {
duke@435 1458 methodOop m = st.method();
duke@435 1459 if (!m->is_initializer()) {
duke@435 1460 count++;
duke@435 1461 }
duke@435 1462 }
duke@435 1463 }
duke@435 1464 // Allocate result
duke@435 1465 klassOop klass = SystemDictionary::reflect_method_klass();
duke@435 1466 objArrayOop r = oopFactory::new_objArray(klass, count, CHECK_NULL);
duke@435 1467 objArrayHandle h_result (THREAD, r);
duke@435 1468
duke@435 1469 // Fill in results backwards
duke@435 1470 {
duke@435 1471 for (MethodStream st(h_k, true, true); !st.eos(); st.next()) {
duke@435 1472 methodHandle m (THREAD, st.method());
duke@435 1473 if (!m->is_initializer()) {
duke@435 1474 oop method = new_method(m, false, false, CHECK_NULL);
duke@435 1475 if (method == NULL) {
duke@435 1476 return NULL;
duke@435 1477 } else {
duke@435 1478 h_result->obj_at_put(--count, method);
duke@435 1479 }
duke@435 1480 }
duke@435 1481 }
duke@435 1482 }
duke@435 1483 assert(count == 0, "just checking");
duke@435 1484 return h_result();
duke@435 1485 }
duke@435 1486 }
duke@435 1487 ShouldNotReachHere();
duke@435 1488 return NULL;
duke@435 1489 }
duke@435 1490
duke@435 1491
duke@435 1492 oop Reflection::reflect_constructor(oop mirror, objArrayHandle types, jint which, TRAPS) {
duke@435 1493
duke@435 1494 // Exclude primitive, interface and array types
duke@435 1495 bool prim = java_lang_Class::is_primitive(mirror);
duke@435 1496 Klass* klass = prim ? NULL : Klass::cast(java_lang_Class::as_klassOop(mirror));
duke@435 1497 if (prim || klass->is_interface() || klass->oop_is_array()) return NULL;
duke@435 1498
duke@435 1499 // Must be instance klass
duke@435 1500 instanceKlassHandle h_k(THREAD, java_lang_Class::as_klassOop(mirror));
duke@435 1501
duke@435 1502 // Ensure klass is linked (need not be initialized)
duke@435 1503 h_k->link_class(CHECK_NULL);
duke@435 1504
duke@435 1505 bool local_only = (which == MEMBER_DECLARED);
duke@435 1506 for (MethodStream st(h_k, true, true); !st.eos(); st.next()) {
duke@435 1507 methodHandle m(THREAD, st.method());
duke@435 1508 if (m->name() == vmSymbols::object_initializer_name() && (local_only || m->is_public())) {
duke@435 1509 symbolHandle signature(THREAD, m->signature());
duke@435 1510 bool parameter_match = match_parameter_types(m, types, ArgumentCount(signature).size(), CHECK_NULL);
duke@435 1511 if (parameter_match) {
duke@435 1512 return new_constructor(m, THREAD);
duke@435 1513 }
duke@435 1514 }
duke@435 1515 }
duke@435 1516
duke@435 1517 return NULL;
duke@435 1518 }
duke@435 1519
duke@435 1520
duke@435 1521 objArrayOop Reflection::reflect_constructors(oop mirror, jint which, TRAPS) {
duke@435 1522 // Exclude primitive, interface and array types
duke@435 1523 bool prim = java_lang_Class::is_primitive(mirror);
duke@435 1524 Klass* k = prim ? NULL : Klass::cast(java_lang_Class::as_klassOop(mirror));
duke@435 1525 if (prim || k->is_interface() || k->oop_is_array()) {
duke@435 1526 return oopFactory::new_objArray(SystemDictionary::reflect_constructor_klass(), 0, CHECK_NULL); // Return empty array
duke@435 1527 }
duke@435 1528
duke@435 1529 // Must be instanceKlass at this point
duke@435 1530 instanceKlassHandle h_k(THREAD, java_lang_Class::as_klassOop(mirror));
duke@435 1531
duke@435 1532 // Ensure klass is linked (need not be initialized)
duke@435 1533 h_k->link_class(CHECK_NULL);
duke@435 1534
duke@435 1535 bool local_only = (which == MEMBER_DECLARED);
duke@435 1536 int count = 0;
duke@435 1537 {
duke@435 1538 for (MethodStream st(h_k, true, true); !st.eos(); st.next()) {
duke@435 1539 methodOop m = st.method();
duke@435 1540 if (m->name() == vmSymbols::object_initializer_name() && (local_only || m->is_public())) {
duke@435 1541 count++;
duke@435 1542 }
duke@435 1543 }
duke@435 1544 }
duke@435 1545
duke@435 1546 // Allocate result
duke@435 1547 symbolHandle name = vmSymbolHandles::java_lang_reflect_Constructor();
duke@435 1548 klassOop klass = SystemDictionary::resolve_or_fail(name, true, CHECK_NULL);
duke@435 1549 objArrayOop r = oopFactory::new_objArray(klass, count, CHECK_NULL);
duke@435 1550 objArrayHandle h_result (THREAD, r);
duke@435 1551
duke@435 1552 // Fill in results backwards
duke@435 1553 {
duke@435 1554 for (MethodStream st(h_k, true, true); !st.eos(); st.next()) {
duke@435 1555 methodHandle m (THREAD, st.method());
duke@435 1556 if (m->name() == vmSymbols::object_initializer_name() && (local_only || m->is_public())) {
duke@435 1557 oop constr = new_constructor(m, CHECK_NULL);
duke@435 1558 if (constr == NULL) {
duke@435 1559 return NULL;
duke@435 1560 } else {
duke@435 1561 h_result->obj_at_put(--count, constr);
duke@435 1562 }
duke@435 1563 }
duke@435 1564 }
duke@435 1565 assert(count == 0, "just checking");
duke@435 1566 }
duke@435 1567 return h_result();
duke@435 1568 }
duke@435 1569
duke@435 1570
duke@435 1571 // This would be nicer if, say, java.lang.reflect.Method was a subclass
duke@435 1572 // of java.lang.reflect.Constructor
duke@435 1573
duke@435 1574 oop Reflection::invoke_method(oop method_mirror, Handle receiver, objArrayHandle args, TRAPS) {
duke@435 1575 oop mirror = java_lang_reflect_Method::clazz(method_mirror);
duke@435 1576 int slot = java_lang_reflect_Method::slot(method_mirror);
duke@435 1577 bool override = java_lang_reflect_Method::override(method_mirror) != 0;
duke@435 1578 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Method::parameter_types(method_mirror)));
duke@435 1579
duke@435 1580 oop return_type_mirror = java_lang_reflect_Method::return_type(method_mirror);
duke@435 1581 BasicType rtype;
duke@435 1582 if (java_lang_Class::is_primitive(return_type_mirror)) {
duke@435 1583 rtype = basic_type_mirror_to_basic_type(return_type_mirror, CHECK_NULL);
duke@435 1584 } else {
duke@435 1585 rtype = T_OBJECT;
duke@435 1586 }
duke@435 1587
duke@435 1588 instanceKlassHandle klass(THREAD, java_lang_Class::as_klassOop(mirror));
dcubed@486 1589 methodOop m = klass->method_with_idnum(slot);
dcubed@486 1590 if (m == NULL) {
duke@435 1591 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke");
duke@435 1592 }
dcubed@486 1593 methodHandle method(THREAD, m);
duke@435 1594
duke@435 1595 return invoke(klass, method, receiver, override, ptypes, rtype, args, true, THREAD);
duke@435 1596 }
duke@435 1597
duke@435 1598
duke@435 1599 oop Reflection::invoke_constructor(oop constructor_mirror, objArrayHandle args, TRAPS) {
duke@435 1600 oop mirror = java_lang_reflect_Constructor::clazz(constructor_mirror);
duke@435 1601 int slot = java_lang_reflect_Constructor::slot(constructor_mirror);
duke@435 1602 bool override = java_lang_reflect_Constructor::override(constructor_mirror) != 0;
duke@435 1603 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Constructor::parameter_types(constructor_mirror)));
duke@435 1604
duke@435 1605 instanceKlassHandle klass(THREAD, java_lang_Class::as_klassOop(mirror));
dcubed@486 1606 methodOop m = klass->method_with_idnum(slot);
dcubed@486 1607 if (m == NULL) {
duke@435 1608 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke");
duke@435 1609 }
dcubed@486 1610 methodHandle method(THREAD, m);
duke@435 1611 assert(method->name() == vmSymbols::object_initializer_name(), "invalid constructor");
duke@435 1612
duke@435 1613 // Make sure klass gets initialize
duke@435 1614 klass->initialize(CHECK_NULL);
duke@435 1615
duke@435 1616 // Create new instance (the receiver)
duke@435 1617 klass->check_valid_for_instantiation(false, CHECK_NULL);
duke@435 1618 Handle receiver = klass->allocate_instance_handle(CHECK_NULL);
duke@435 1619
duke@435 1620 // Ignore result from call and return receiver
duke@435 1621 invoke(klass, method, receiver, override, ptypes, T_VOID, args, false, CHECK_NULL);
duke@435 1622 return receiver();
duke@435 1623 }
duke@435 1624
duke@435 1625
duke@435 1626 #endif /* SUPPORT_OLD_REFLECTION */

Mercurial Repository: jdk8-mips64-public/hotspot

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