Mercurial > hg > graal-jvmci-8
annotate src/share/vm/runtime/reflection.cpp @ 24234:ea6f94ab283b default tip
Added tag jvmci-0.36 for changeset 8128b98d4736
| author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
|---|---|
| date | Mon, 18 Sep 2017 18:49:45 +0200 |
| parents | b5f3a471e646 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 23614 | 2 * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/javaClasses.hpp" | |
| 27 #include "classfile/symbolTable.hpp" | |
| 28 #include "classfile/systemDictionary.hpp" | |
| 29 #include "classfile/verifier.hpp" | |
| 30 #include "classfile/vmSymbols.hpp" | |
| 31 #include "interpreter/linkResolver.hpp" | |
| 32 #include "memory/oopFactory.hpp" | |
| 33 #include "memory/resourceArea.hpp" | |
| 34 #include "memory/universe.inline.hpp" | |
| 35 #include "oops/instanceKlass.hpp" | |
| 36 #include "oops/objArrayKlass.hpp" | |
| 37 #include "oops/objArrayOop.hpp" | |
| 38 #include "prims/jvm.h" | |
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39 #include "prims/jvmtiExport.hpp" |
| 1972 | 40 #include "runtime/arguments.hpp" |
| 41 #include "runtime/handles.inline.hpp" | |
| 42 #include "runtime/javaCalls.hpp" | |
| 43 #include "runtime/reflection.hpp" | |
| 44 #include "runtime/reflectionUtils.hpp" | |
| 45 #include "runtime/signature.hpp" | |
| 46 #include "runtime/vframe.hpp" | |
| 0 | 47 |
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48 static void trace_class_resolution(Klass* to_class) { |
| 0 | 49 ResourceMark rm; |
| 50 int line_number = -1; | |
| 51 const char * source_file = NULL; | |
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52 Klass* caller = NULL; |
| 0 | 53 JavaThread* jthread = JavaThread::current(); |
| 54 if (jthread->has_last_Java_frame()) { | |
| 55 vframeStream vfst(jthread); | |
| 56 // skip over any frames belonging to java.lang.Class | |
| 57 while (!vfst.at_end() && | |
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58 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class()) { |
| 0 | 59 vfst.next(); |
| 60 } | |
| 61 if (!vfst.at_end()) { | |
| 62 // this frame is a likely suspect | |
| 63 caller = vfst.method()->method_holder(); | |
| 64 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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65 Symbol* s = vfst.method()->method_holder()->source_file_name(); |
| 0 | 66 if (s != NULL) { |
| 67 source_file = s->as_C_string(); | |
| 68 } | |
| 69 } | |
| 70 } | |
| 71 if (caller != NULL) { | |
| 6983 | 72 const char * from = caller->external_name(); |
| 73 const char * to = to_class->external_name(); | |
| 0 | 74 // print in a single call to reduce interleaving between threads |
| 75 if (source_file != NULL) { | |
| 76 tty->print("RESOLVE %s %s %s:%d (reflection)\n", from, to, source_file, line_number); | |
| 77 } else { | |
| 78 tty->print("RESOLVE %s %s (reflection)\n", from, to); | |
| 79 } | |
| 80 } | |
| 81 } | |
| 82 | |
| 83 | |
| 84 oop Reflection::box(jvalue* value, BasicType type, TRAPS) { | |
| 85 if (type == T_VOID) { | |
| 86 return NULL; | |
| 87 } | |
| 88 if (type == T_OBJECT || type == T_ARRAY) { | |
| 89 // regular objects are not boxed | |
| 90 return (oop) value->l; | |
| 91 } | |
| 92 oop result = java_lang_boxing_object::create(type, value, CHECK_NULL); | |
| 93 if (result == NULL) { | |
| 94 THROW_(vmSymbols::java_lang_IllegalArgumentException(), result); | |
| 95 } | |
| 96 return result; | |
| 97 } | |
| 98 | |
| 99 | |
| 100 BasicType Reflection::unbox_for_primitive(oop box, jvalue* value, TRAPS) { | |
| 101 if (box == NULL) { | |
| 102 THROW_(vmSymbols::java_lang_IllegalArgumentException(), T_ILLEGAL); | |
| 103 } | |
| 104 return java_lang_boxing_object::get_value(box, value); | |
| 105 } | |
| 106 | |
| 107 BasicType Reflection::unbox_for_regular_object(oop box, jvalue* value) { | |
| 108 // Note: box is really the unboxed oop. It might even be a Short, etc.! | |
| 109 value->l = (jobject) box; | |
| 110 return T_OBJECT; | |
| 111 } | |
| 112 | |
| 113 | |
| 114 void Reflection::widen(jvalue* value, BasicType current_type, BasicType wide_type, TRAPS) { | |
| 115 assert(wide_type != current_type, "widen should not be called with identical types"); | |
| 116 switch (wide_type) { | |
| 117 case T_BOOLEAN: | |
| 118 case T_BYTE: | |
| 119 case T_CHAR: | |
| 120 break; // fail | |
| 121 case T_SHORT: | |
| 122 switch (current_type) { | |
| 123 case T_BYTE: | |
| 124 value->s = (jshort) value->b; | |
| 125 return; | |
| 126 } | |
| 127 break; // fail | |
| 128 case T_INT: | |
| 129 switch (current_type) { | |
| 130 case T_BYTE: | |
| 131 value->i = (jint) value->b; | |
| 132 return; | |
| 133 case T_CHAR: | |
| 134 value->i = (jint) value->c; | |
| 135 return; | |
| 136 case T_SHORT: | |
| 137 value->i = (jint) value->s; | |
| 138 return; | |
| 139 } | |
| 140 break; // fail | |
| 141 case T_LONG: | |
| 142 switch (current_type) { | |
| 143 case T_BYTE: | |
| 144 value->j = (jlong) value->b; | |
| 145 return; | |
| 146 case T_CHAR: | |
| 147 value->j = (jlong) value->c; | |
| 148 return; | |
| 149 case T_SHORT: | |
| 150 value->j = (jlong) value->s; | |
| 151 return; | |
| 152 case T_INT: | |
| 153 value->j = (jlong) value->i; | |
| 154 return; | |
| 155 } | |
| 156 break; // fail | |
| 157 case T_FLOAT: | |
| 158 switch (current_type) { | |
| 159 case T_BYTE: | |
| 160 value->f = (jfloat) value->b; | |
| 161 return; | |
| 162 case T_CHAR: | |
| 163 value->f = (jfloat) value->c; | |
| 164 return; | |
| 165 case T_SHORT: | |
| 166 value->f = (jfloat) value->s; | |
| 167 return; | |
| 168 case T_INT: | |
| 169 value->f = (jfloat) value->i; | |
| 170 return; | |
| 171 case T_LONG: | |
| 172 value->f = (jfloat) value->j; | |
| 173 return; | |
| 174 } | |
| 175 break; // fail | |
| 176 case T_DOUBLE: | |
| 177 switch (current_type) { | |
| 178 case T_BYTE: | |
| 179 value->d = (jdouble) value->b; | |
| 180 return; | |
| 181 case T_CHAR: | |
| 182 value->d = (jdouble) value->c; | |
| 183 return; | |
| 184 case T_SHORT: | |
| 185 value->d = (jdouble) value->s; | |
| 186 return; | |
| 187 case T_INT: | |
| 188 value->d = (jdouble) value->i; | |
| 189 return; | |
| 190 case T_FLOAT: | |
| 191 value->d = (jdouble) value->f; | |
| 192 return; | |
| 193 case T_LONG: | |
| 194 value->d = (jdouble) value->j; | |
| 195 return; | |
| 196 } | |
| 197 break; // fail | |
| 198 default: | |
| 199 break; // fail | |
| 200 } | |
| 201 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
| 202 } | |
| 203 | |
| 204 | |
| 205 BasicType Reflection::array_get(jvalue* value, arrayOop a, int index, TRAPS) { | |
| 206 if (!a->is_within_bounds(index)) { | |
| 207 THROW_(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), T_ILLEGAL); | |
| 208 } | |
| 209 if (a->is_objArray()) { | |
| 210 value->l = (jobject) objArrayOop(a)->obj_at(index); | |
| 211 return T_OBJECT; | |
| 212 } else { | |
| 213 assert(a->is_typeArray(), "just checking"); | |
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214 BasicType type = TypeArrayKlass::cast(a->klass())->element_type(); |
| 0 | 215 switch (type) { |
| 216 case T_BOOLEAN: | |
| 217 value->z = typeArrayOop(a)->bool_at(index); | |
| 218 break; | |
| 219 case T_CHAR: | |
| 220 value->c = typeArrayOop(a)->char_at(index); | |
| 221 break; | |
| 222 case T_FLOAT: | |
| 223 value->f = typeArrayOop(a)->float_at(index); | |
| 224 break; | |
| 225 case T_DOUBLE: | |
| 226 value->d = typeArrayOop(a)->double_at(index); | |
| 227 break; | |
| 228 case T_BYTE: | |
| 229 value->b = typeArrayOop(a)->byte_at(index); | |
| 230 break; | |
| 231 case T_SHORT: | |
| 232 value->s = typeArrayOop(a)->short_at(index); | |
| 233 break; | |
| 234 case T_INT: | |
| 235 value->i = typeArrayOop(a)->int_at(index); | |
| 236 break; | |
| 237 case T_LONG: | |
| 238 value->j = typeArrayOop(a)->long_at(index); | |
| 239 break; | |
| 240 default: | |
| 241 return T_ILLEGAL; | |
| 242 } | |
| 243 return type; | |
| 244 } | |
| 245 } | |
| 246 | |
| 247 | |
| 248 void Reflection::array_set(jvalue* value, arrayOop a, int index, BasicType value_type, TRAPS) { | |
| 249 if (!a->is_within_bounds(index)) { | |
| 250 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 251 } | |
| 252 if (a->is_objArray()) { | |
| 253 if (value_type == T_OBJECT) { | |
| 254 oop obj = (oop) value->l; | |
| 255 if (obj != NULL) { | |
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256 Klass* element_klass = ObjArrayKlass::cast(a->klass())->element_klass(); |
| 0 | 257 if (!obj->is_a(element_klass)) { |
| 258 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "array element type mismatch"); | |
| 259 } | |
| 260 } | |
| 261 objArrayOop(a)->obj_at_put(index, obj); | |
| 262 } | |
| 263 } else { | |
| 264 assert(a->is_typeArray(), "just checking"); | |
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265 BasicType array_type = TypeArrayKlass::cast(a->klass())->element_type(); |
| 0 | 266 if (array_type != value_type) { |
| 267 // The widen operation can potentially throw an exception, but cannot block, | |
| 268 // so typeArrayOop a is safe if the call succeeds. | |
| 269 widen(value, value_type, array_type, CHECK); | |
| 270 } | |
| 271 switch (array_type) { | |
| 272 case T_BOOLEAN: | |
| 273 typeArrayOop(a)->bool_at_put(index, value->z); | |
| 274 break; | |
| 275 case T_CHAR: | |
| 276 typeArrayOop(a)->char_at_put(index, value->c); | |
| 277 break; | |
| 278 case T_FLOAT: | |
| 279 typeArrayOop(a)->float_at_put(index, value->f); | |
| 280 break; | |
| 281 case T_DOUBLE: | |
| 282 typeArrayOop(a)->double_at_put(index, value->d); | |
| 283 break; | |
| 284 case T_BYTE: | |
| 285 typeArrayOop(a)->byte_at_put(index, value->b); | |
| 286 break; | |
| 287 case T_SHORT: | |
| 288 typeArrayOop(a)->short_at_put(index, value->s); | |
| 289 break; | |
| 290 case T_INT: | |
| 291 typeArrayOop(a)->int_at_put(index, value->i); | |
| 292 break; | |
| 293 case T_LONG: | |
| 294 typeArrayOop(a)->long_at_put(index, value->j); | |
| 295 break; | |
| 296 default: | |
| 297 THROW(vmSymbols::java_lang_IllegalArgumentException()); | |
| 298 } | |
| 299 } | |
| 300 } | |
| 301 | |
| 302 | |
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303 Klass* Reflection::basic_type_mirror_to_arrayklass(oop basic_type_mirror, TRAPS) { |
| 0 | 304 assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking"); |
| 305 BasicType type = java_lang_Class::primitive_type(basic_type_mirror); | |
| 306 if (type == T_VOID) { | |
| 307 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
| 308 } else { | |
| 309 return Universe::typeArrayKlassObj(type); | |
| 310 } | |
| 311 } | |
| 312 | |
| 313 | |
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314 oop Reflection:: basic_type_arrayklass_to_mirror(Klass* basic_type_arrayklass, TRAPS) { |
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315 BasicType type = TypeArrayKlass::cast(basic_type_arrayklass)->element_type(); |
| 0 | 316 return Universe::java_mirror(type); |
| 317 } | |
| 318 | |
| 319 | |
| 320 arrayOop Reflection::reflect_new_array(oop element_mirror, jint length, TRAPS) { | |
| 321 if (element_mirror == NULL) { | |
| 322 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 323 } | |
| 324 if (length < 0) { | |
| 325 THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); | |
| 326 } | |
| 327 if (java_lang_Class::is_primitive(element_mirror)) { | |
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328 Klass* tak = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL); |
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329 return TypeArrayKlass::cast(tak)->allocate(length, THREAD); |
| 0 | 330 } else { |
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331 Klass* k = java_lang_Class::as_Klass(element_mirror); |
| 6983 | 332 if (k->oop_is_array() && ArrayKlass::cast(k)->dimension() >= MAX_DIM) { |
| 0 | 333 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); |
| 334 } | |
| 335 return oopFactory::new_objArray(k, length, THREAD); | |
| 336 } | |
| 337 } | |
| 338 | |
| 339 | |
| 340 arrayOop Reflection::reflect_new_multi_array(oop element_mirror, typeArrayOop dim_array, TRAPS) { | |
| 341 assert(dim_array->is_typeArray(), "just checking"); | |
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342 assert(TypeArrayKlass::cast(dim_array->klass())->element_type() == T_INT, "just checking"); |
| 0 | 343 |
| 344 if (element_mirror == NULL) { | |
| 345 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 346 } | |
| 347 | |
| 348 int len = dim_array->length(); | |
| 349 if (len <= 0 || len > MAX_DIM) { | |
| 350 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
| 351 } | |
| 352 | |
| 353 jint dimensions[MAX_DIM]; // C array copy of intArrayOop | |
| 354 for (int i = 0; i < len; i++) { | |
| 355 int d = dim_array->int_at(i); | |
| 356 if (d < 0) { | |
| 357 THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); | |
| 358 } | |
| 359 dimensions[i] = d; | |
| 360 } | |
| 361 | |
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362 Klass* klass; |
| 0 | 363 int dim = len; |
| 364 if (java_lang_Class::is_primitive(element_mirror)) { | |
| 365 klass = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL); | |
| 366 } else { | |
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367 klass = java_lang_Class::as_Klass(element_mirror); |
| 6983 | 368 if (klass->oop_is_array()) { |
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369 int k_dim = ArrayKlass::cast(klass)->dimension(); |
| 0 | 370 if (k_dim + len > MAX_DIM) { |
| 371 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
| 372 } | |
| 373 dim += k_dim; | |
| 374 } | |
| 375 } | |
| 6983 | 376 klass = klass->array_klass(dim, CHECK_NULL); |
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377 oop obj = ArrayKlass::cast(klass)->multi_allocate(len, dimensions, CHECK_NULL); |
| 0 | 378 assert(obj->is_array(), "just checking"); |
| 379 return arrayOop(obj); | |
| 380 } | |
| 381 | |
| 382 | |
| 383 oop Reflection::array_component_type(oop mirror, TRAPS) { | |
| 384 if (java_lang_Class::is_primitive(mirror)) { | |
| 385 return NULL; | |
| 386 } | |
| 387 | |
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388 Klass* klass = java_lang_Class::as_Klass(mirror); |
| 6983 | 389 if (!klass->oop_is_array()) { |
| 0 | 390 return NULL; |
| 391 } | |
| 392 | |
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393 oop result = ArrayKlass::cast(klass)->component_mirror(); |
| 0 | 394 #ifdef ASSERT |
| 395 oop result2 = NULL; | |
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396 if (ArrayKlass::cast(klass)->dimension() == 1) { |
| 6983 | 397 if (klass->oop_is_typeArray()) { |
| 0 | 398 result2 = basic_type_arrayklass_to_mirror(klass, CHECK_NULL); |
| 399 } else { | |
| 6983 | 400 result2 = ObjArrayKlass::cast(klass)->element_klass()->java_mirror(); |
| 0 | 401 } |
| 402 } else { | |
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403 Klass* lower_dim = ArrayKlass::cast(klass)->lower_dimension(); |
| 6983 | 404 assert(lower_dim->oop_is_array(), "just checking"); |
| 405 result2 = lower_dim->java_mirror(); | |
| 0 | 406 } |
| 407 assert(result == result2, "results must be consistent"); | |
| 408 #endif //ASSERT | |
| 409 return result; | |
| 410 } | |
| 411 | |
| 412 | |
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413 bool Reflection::reflect_check_access(Klass* field_class, AccessFlags acc, Klass* target_class, bool is_method_invoke, TRAPS) { |
| 0 | 414 // field_class : declaring class |
| 415 // acc : declared field access | |
| 416 // target_class : for protected | |
| 417 | |
| 418 // Check if field or method is accessible to client. Throw an | |
| 419 // IllegalAccessException and return false if not. | |
| 420 | |
| 421 // The "client" is the class associated with the nearest real frame | |
| 422 // getCallerClass already skips Method.invoke frames, so pass 0 in | |
| 423 // that case (same as classic). | |
| 424 ResourceMark rm(THREAD); | |
| 425 assert(THREAD->is_Java_thread(), "sanity check"); | |
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426 Klass* client_class = ((JavaThread *)THREAD)->security_get_caller_class(is_method_invoke ? 0 : 1); |
| 0 | 427 |
| 428 if (client_class != field_class) { | |
| 429 if (!verify_class_access(client_class, field_class, false) | |
| 430 || !verify_field_access(client_class, | |
| 431 field_class, | |
| 432 field_class, | |
| 433 acc, | |
| 434 false)) { | |
| 435 THROW_(vmSymbols::java_lang_IllegalAccessException(), false); | |
| 436 } | |
| 437 } | |
| 438 | |
| 439 // Additional test for protected members: JLS 6.6.2 | |
| 440 | |
| 441 if (acc.is_protected()) { | |
| 442 if (target_class != client_class) { | |
| 443 if (!is_same_class_package(client_class, field_class)) { | |
| 6983 | 444 if (!target_class->is_subclass_of(client_class)) { |
| 0 | 445 THROW_(vmSymbols::java_lang_IllegalAccessException(), false); |
| 446 } | |
| 447 } | |
| 448 } | |
| 449 } | |
| 450 | |
| 451 // Passed all tests | |
| 452 return true; | |
| 453 } | |
| 454 | |
| 455 | |
|
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456 bool Reflection::verify_class_access(Klass* current_class, Klass* new_class, bool classloader_only) { |
| 0 | 457 // Verify that current_class can access new_class. If the classloader_only |
| 458 // flag is set, we automatically allow any accesses in which current_class | |
| 459 // doesn't have a classloader. | |
| 460 if ((current_class == NULL) || | |
| 461 (current_class == new_class) || | |
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462 (new_class->is_public()) || |
| 0 | 463 is_same_class_package(current_class, new_class)) { |
| 464 return true; | |
| 465 } | |
| 466 // New (1.4) reflection implementation. Allow all accesses from | |
| 467 // sun/reflect/MagicAccessorImpl subclasses to succeed trivially. | |
| 468 if ( JDK_Version::is_gte_jdk14x_version() | |
| 469 && UseNewReflection | |
| 6983 | 470 && current_class->is_subclass_of(SystemDictionary::reflect_MagicAccessorImpl_klass())) { |
| 0 | 471 return true; |
| 472 } | |
| 473 | |
| 474 return can_relax_access_check_for(current_class, new_class, classloader_only); | |
| 475 } | |
| 476 | |
|
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477 static bool under_host_klass(InstanceKlass* ik, Klass* host_klass) { |
|
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478 DEBUG_ONLY(int inf_loop_check = 1000 * 1000 * 1000); |
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479 for (;;) { |
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480 Klass* hc = (Klass*) ik->host_klass(); |
|
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481 if (hc == NULL) return false; |
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482 if (hc == host_klass) return true; |
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483 ik = InstanceKlass::cast(hc); |
|
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484 |
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485 // There's no way to make a host class loop short of patching memory. |
| 18052 | 486 // Therefore there cannot be a loop here unless there's another bug. |
|
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487 // Still, let's check for it. |
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488 assert(--inf_loop_check > 0, "no host_klass loop"); |
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489 } |
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490 } |
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491 |
| 0 | 492 bool Reflection::can_relax_access_check_for( |
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493 Klass* accessor, Klass* accessee, bool classloader_only) { |
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494 InstanceKlass* accessor_ik = InstanceKlass::cast(accessor); |
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495 InstanceKlass* accessee_ik = InstanceKlass::cast(accessee); |
|
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496 |
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497 // If either is on the other's host_klass chain, access is OK, |
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498 // because one is inside the other. |
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499 if (under_host_klass(accessor_ik, accessee) || |
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500 under_host_klass(accessee_ik, accessor)) |
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501 return true; |
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502 |
|
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503 if ((RelaxAccessControlCheck && |
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504 accessor_ik->major_version() < Verifier::NO_RELAX_ACCESS_CTRL_CHECK_VERSION && |
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505 accessee_ik->major_version() < Verifier::NO_RELAX_ACCESS_CTRL_CHECK_VERSION) || |
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506 (accessor_ik->major_version() < Verifier::STRICTER_ACCESS_CTRL_CHECK_VERSION && |
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507 accessee_ik->major_version() < Verifier::STRICTER_ACCESS_CTRL_CHECK_VERSION)) { |
| 0 | 508 return classloader_only && |
| 509 Verifier::relax_verify_for(accessor_ik->class_loader()) && | |
| 510 accessor_ik->protection_domain() == accessee_ik->protection_domain() && | |
| 511 accessor_ik->class_loader() == accessee_ik->class_loader(); | |
| 512 } else { | |
| 513 return false; | |
| 514 } | |
| 515 } | |
| 516 | |
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517 bool Reflection::verify_field_access(Klass* current_class, |
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518 Klass* resolved_class, |
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519 Klass* field_class, |
| 0 | 520 AccessFlags access, |
| 521 bool classloader_only, | |
| 522 bool protected_restriction) { | |
| 523 // Verify that current_class can access a field of field_class, where that | |
| 524 // field's access bits are "access". We assume that we've already verified | |
| 525 // that current_class can access field_class. | |
| 526 // | |
| 527 // If the classloader_only flag is set, we automatically allow any accesses | |
| 528 // in which current_class doesn't have a classloader. | |
| 529 // | |
| 530 // "resolved_class" is the runtime type of "field_class". Sometimes we don't | |
| 531 // need this distinction (e.g. if all we have is the runtime type, or during | |
| 532 // class file parsing when we only care about the static type); in that case | |
| 533 // callers should ensure that resolved_class == field_class. | |
| 534 // | |
| 535 if ((current_class == NULL) || | |
| 536 (current_class == field_class) || | |
| 537 access.is_public()) { | |
| 538 return true; | |
| 539 } | |
| 540 | |
|
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541 Klass* host_class = current_class; |
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542 while (host_class->oop_is_instance() && |
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543 InstanceKlass::cast(host_class)->is_anonymous()) { |
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544 Klass* next_host_class = InstanceKlass::cast(host_class)->host_klass(); |
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545 if (next_host_class == NULL) break; |
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546 host_class = next_host_class; |
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547 } |
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548 if (host_class == field_class) { |
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549 return true; |
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550 } |
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551 |
| 0 | 552 if (access.is_protected()) { |
| 553 if (!protected_restriction) { | |
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554 // See if current_class (or outermost host class) is a subclass of field_class |
| 18052 | 555 // An interface may not access protected members of j.l.Object |
| 556 if (!host_class->is_interface() && host_class->is_subclass_of(field_class)) { | |
| 115 | 557 if (access.is_static() || // static fields are ok, see 6622385 |
| 558 current_class == resolved_class || | |
| 0 | 559 field_class == resolved_class || |
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560 host_class->is_subclass_of(resolved_class) || |
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561 resolved_class->is_subclass_of(host_class)) { |
| 0 | 562 return true; |
| 563 } | |
| 564 } | |
| 565 } | |
| 566 } | |
| 567 | |
| 568 if (!access.is_private() && is_same_class_package(current_class, field_class)) { | |
| 569 return true; | |
| 570 } | |
| 571 | |
| 572 // New (1.4) reflection implementation. Allow all accesses from | |
| 573 // sun/reflect/MagicAccessorImpl subclasses to succeed trivially. | |
| 574 if ( JDK_Version::is_gte_jdk14x_version() | |
| 575 && UseNewReflection | |
| 6983 | 576 && current_class->is_subclass_of(SystemDictionary::reflect_MagicAccessorImpl_klass())) { |
| 0 | 577 return true; |
| 578 } | |
| 579 | |
| 580 return can_relax_access_check_for( | |
| 581 current_class, field_class, classloader_only); | |
| 582 } | |
| 583 | |
| 584 | |
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585 bool Reflection::is_same_class_package(Klass* class1, Klass* class2) { |
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586 return InstanceKlass::cast(class1)->is_same_class_package(class2); |
| 0 | 587 } |
| 588 | |
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589 bool Reflection::is_same_package_member(Klass* class1, Klass* class2, TRAPS) { |
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590 return InstanceKlass::cast(class1)->is_same_package_member(class2, THREAD); |
|
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591 } |
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592 |
| 0 | 593 |
| 594 // Checks that the 'outer' klass has declared 'inner' as being an inner klass. If not, | |
| 595 // throw an incompatible class change exception | |
|
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596 // If inner_is_member, require the inner to be a member of the outer. |
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597 // If !inner_is_member, require the inner to be anonymous (a non-member). |
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598 // Caller is responsible for figuring out in advance which case must be true. |
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599 void Reflection::check_for_inner_class(instanceKlassHandle outer, instanceKlassHandle inner, |
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600 bool inner_is_member, TRAPS) { |
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601 InnerClassesIterator iter(outer); |
| 0 | 602 constantPoolHandle cp (THREAD, outer->constants()); |
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603 for (; !iter.done(); iter.next()) { |
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604 int ioff = iter.inner_class_info_index(); |
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605 int ooff = iter.outer_class_info_index(); |
| 0 | 606 |
|
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607 if (inner_is_member && ioff != 0 && ooff != 0) { |
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608 Klass* o = cp->klass_at(ooff, CHECK); |
| 0 | 609 if (o == outer()) { |
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610 Klass* i = cp->klass_at(ioff, CHECK); |
| 0 | 611 if (i == inner()) { |
| 612 return; | |
| 613 } | |
| 614 } | |
| 615 } | |
|
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616 if (!inner_is_member && ioff != 0 && ooff == 0 && |
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617 cp->klass_name_at_matches(inner, ioff)) { |
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618 Klass* i = cp->klass_at(ioff, CHECK); |
|
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619 if (i == inner()) { |
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620 return; |
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621 } |
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622 } |
| 0 | 623 } |
| 624 | |
| 625 // 'inner' not declared as an inner klass in outer | |
| 626 ResourceMark rm(THREAD); | |
| 627 Exceptions::fthrow( | |
| 628 THREAD_AND_LOCATION, | |
|
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629 vmSymbols::java_lang_IncompatibleClassChangeError(), |
| 0 | 630 "%s and %s disagree on InnerClasses attribute", |
| 631 outer->external_name(), | |
| 632 inner->external_name() | |
| 633 ); | |
| 634 } | |
| 635 | |
| 636 // Utility method converting a single SignatureStream element into java.lang.Class instance | |
| 637 | |
| 638 oop get_mirror_from_signature(methodHandle method, SignatureStream* ss, TRAPS) { | |
| 639 switch (ss->type()) { | |
| 640 default: | |
| 641 assert(ss->type() != T_VOID || ss->at_return_type(), "T_VOID should only appear as return type"); | |
| 642 return java_lang_Class::primitive_mirror(ss->type()); | |
| 643 case T_OBJECT: | |
| 644 case T_ARRAY: | |
|
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645 Symbol* name = ss->as_symbol(CHECK_NULL); |
|
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646 oop loader = method->method_holder()->class_loader(); |
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647 oop protection_domain = method->method_holder()->protection_domain(); |
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648 Klass* k = SystemDictionary::resolve_or_fail( |
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649 name, |
| 0 | 650 Handle(THREAD, loader), |
| 651 Handle(THREAD, protection_domain), | |
| 652 true, CHECK_NULL); | |
| 653 if (TraceClassResolution) { | |
| 654 trace_class_resolution(k); | |
| 655 } | |
|
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656 return k->java_mirror(); |
| 0 | 657 }; |
| 658 } | |
| 659 | |
| 660 | |
| 661 objArrayHandle Reflection::get_parameter_types(methodHandle method, int parameter_count, oop* return_type, TRAPS) { | |
| 662 // Allocate array holding parameter types (java.lang.Class instances) | |
| 1142 | 663 objArrayOop m = oopFactory::new_objArray(SystemDictionary::Class_klass(), parameter_count, CHECK_(objArrayHandle())); |
| 0 | 664 objArrayHandle mirrors (THREAD, m); |
| 665 int index = 0; | |
| 666 // Collect parameter types | |
|
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667 ResourceMark rm(THREAD); |
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668 Symbol* signature = method->signature(); |
| 0 | 669 SignatureStream ss(signature); |
| 670 while (!ss.at_return_type()) { | |
| 671 oop mirror = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle())); | |
| 672 mirrors->obj_at_put(index++, mirror); | |
| 673 ss.next(); | |
| 674 } | |
| 675 assert(index == parameter_count, "invalid parameter count"); | |
| 676 if (return_type != NULL) { | |
| 677 // Collect return type as well | |
| 678 assert(ss.at_return_type(), "return type should be present"); | |
| 679 *return_type = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle())); | |
| 680 } | |
| 681 return mirrors; | |
| 682 } | |
| 683 | |
| 684 objArrayHandle Reflection::get_exception_types(methodHandle method, TRAPS) { | |
| 685 return method->resolved_checked_exceptions(CHECK_(objArrayHandle())); | |
| 686 } | |
| 687 | |
| 688 | |
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689 Handle Reflection::new_type(Symbol* signature, KlassHandle k, TRAPS) { |
| 0 | 690 // Basic types |
|
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691 BasicType type = vmSymbols::signature_type(signature); |
| 0 | 692 if (type != T_OBJECT) { |
| 693 return Handle(THREAD, Universe::java_mirror(type)); | |
| 694 } | |
| 695 | |
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696 oop loader = InstanceKlass::cast(k())->class_loader(); |
| 6983 | 697 oop protection_domain = k()->protection_domain(); |
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698 Klass* result = SystemDictionary::resolve_or_fail(signature, |
| 0 | 699 Handle(THREAD, loader), |
| 700 Handle(THREAD, protection_domain), | |
| 701 true, CHECK_(Handle())); | |
| 702 | |
| 703 if (TraceClassResolution) { | |
| 704 trace_class_resolution(result); | |
| 705 } | |
| 706 | |
| 6983 | 707 oop nt = result->java_mirror(); |
| 0 | 708 return Handle(THREAD, nt); |
| 709 } | |
| 710 | |
| 711 | |
| 712 oop Reflection::new_method(methodHandle method, bool intern_name, bool for_constant_pool_access, TRAPS) { | |
| 713 // In jdk1.2.x, getMethods on an interface erroneously includes <clinit>, thus the complicated assert. | |
| 714 // Also allow sun.reflect.ConstantPool to refer to <clinit> methods as java.lang.reflect.Methods. | |
| 715 assert(!method()->is_initializer() || | |
| 716 (for_constant_pool_access && method()->is_static()) || | |
| 717 (method()->name() == vmSymbols::class_initializer_name() | |
|
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718 && method()->method_holder()->is_interface() && JDK_Version::is_jdk12x_version()), "should call new_constructor instead"); |
| 0 | 719 instanceKlassHandle holder (THREAD, method->method_holder()); |
| 720 int slot = method->method_idnum(); | |
| 721 | |
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722 Symbol* signature = method->signature(); |
| 0 | 723 int parameter_count = ArgumentCount(signature).size(); |
| 724 oop return_type_oop = NULL; | |
| 725 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, &return_type_oop, CHECK_NULL); | |
| 726 if (parameter_types.is_null() || return_type_oop == NULL) return NULL; | |
| 727 | |
| 728 Handle return_type(THREAD, return_type_oop); | |
| 729 | |
| 730 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL); | |
| 731 | |
| 732 if (exception_types.is_null()) return NULL; | |
| 733 | |
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734 Symbol* method_name = method->name(); |
| 0 | 735 Handle name; |
| 736 if (intern_name) { | |
| 737 // intern_name is only true with UseNewReflection | |
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738 oop name_oop = StringTable::intern(method_name, CHECK_NULL); |
| 0 | 739 name = Handle(THREAD, name_oop); |
| 740 } else { | |
| 741 name = java_lang_String::create_from_symbol(method_name, CHECK_NULL); | |
| 742 } | |
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743 if (name == NULL) return NULL; |
| 0 | 744 |
| 745 int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 746 | |
| 747 Handle mh = java_lang_reflect_Method::create(CHECK_NULL); | |
| 748 | |
| 749 java_lang_reflect_Method::set_clazz(mh(), holder->java_mirror()); | |
| 750 java_lang_reflect_Method::set_slot(mh(), slot); | |
| 751 java_lang_reflect_Method::set_name(mh(), name()); | |
| 752 java_lang_reflect_Method::set_return_type(mh(), return_type()); | |
| 753 java_lang_reflect_Method::set_parameter_types(mh(), parameter_types()); | |
| 754 java_lang_reflect_Method::set_exception_types(mh(), exception_types()); | |
| 755 java_lang_reflect_Method::set_modifiers(mh(), modifiers); | |
| 756 java_lang_reflect_Method::set_override(mh(), false); | |
| 757 if (java_lang_reflect_Method::has_signature_field() && | |
| 758 method->generic_signature() != NULL) { | |
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759 Symbol* gs = method->generic_signature(); |
| 0 | 760 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); |
| 761 java_lang_reflect_Method::set_signature(mh(), sig()); | |
| 762 } | |
| 763 if (java_lang_reflect_Method::has_annotations_field()) { | |
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764 typeArrayOop an_oop = Annotations::make_java_array(method->annotations(), CHECK_NULL); |
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765 java_lang_reflect_Method::set_annotations(mh(), an_oop); |
| 0 | 766 } |
| 767 if (java_lang_reflect_Method::has_parameter_annotations_field()) { | |
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768 typeArrayOop an_oop = Annotations::make_java_array(method->parameter_annotations(), CHECK_NULL); |
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769 java_lang_reflect_Method::set_parameter_annotations(mh(), an_oop); |
| 0 | 770 } |
| 771 if (java_lang_reflect_Method::has_annotation_default_field()) { | |
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772 typeArrayOop an_oop = Annotations::make_java_array(method->annotation_default(), CHECK_NULL); |
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773 java_lang_reflect_Method::set_annotation_default(mh(), an_oop); |
| 0 | 774 } |
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775 if (java_lang_reflect_Method::has_type_annotations_field()) { |
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776 typeArrayOop an_oop = Annotations::make_java_array(method->type_annotations(), CHECK_NULL); |
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777 java_lang_reflect_Method::set_type_annotations(mh(), an_oop); |
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778 } |
| 0 | 779 return mh(); |
| 780 } | |
| 781 | |
| 782 | |
| 783 oop Reflection::new_constructor(methodHandle method, TRAPS) { | |
| 784 assert(method()->is_initializer(), "should call new_method instead"); | |
| 785 | |
| 786 instanceKlassHandle holder (THREAD, method->method_holder()); | |
| 787 int slot = method->method_idnum(); | |
| 788 | |
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789 Symbol* signature = method->signature(); |
| 0 | 790 int parameter_count = ArgumentCount(signature).size(); |
| 791 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, NULL, CHECK_NULL); | |
| 792 if (parameter_types.is_null()) return NULL; | |
| 793 | |
| 794 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL); | |
| 795 if (exception_types.is_null()) return NULL; | |
| 796 | |
| 797 int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 798 | |
| 799 Handle ch = java_lang_reflect_Constructor::create(CHECK_NULL); | |
| 800 | |
| 801 java_lang_reflect_Constructor::set_clazz(ch(), holder->java_mirror()); | |
| 802 java_lang_reflect_Constructor::set_slot(ch(), slot); | |
| 803 java_lang_reflect_Constructor::set_parameter_types(ch(), parameter_types()); | |
| 804 java_lang_reflect_Constructor::set_exception_types(ch(), exception_types()); | |
| 805 java_lang_reflect_Constructor::set_modifiers(ch(), modifiers); | |
| 806 java_lang_reflect_Constructor::set_override(ch(), false); | |
| 807 if (java_lang_reflect_Constructor::has_signature_field() && | |
| 808 method->generic_signature() != NULL) { | |
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809 Symbol* gs = method->generic_signature(); |
| 0 | 810 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); |
| 811 java_lang_reflect_Constructor::set_signature(ch(), sig()); | |
| 812 } | |
| 813 if (java_lang_reflect_Constructor::has_annotations_field()) { | |
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814 typeArrayOop an_oop = Annotations::make_java_array(method->annotations(), CHECK_NULL); |
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815 java_lang_reflect_Constructor::set_annotations(ch(), an_oop); |
| 0 | 816 } |
| 817 if (java_lang_reflect_Constructor::has_parameter_annotations_field()) { | |
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818 typeArrayOop an_oop = Annotations::make_java_array(method->parameter_annotations(), CHECK_NULL); |
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819 java_lang_reflect_Constructor::set_parameter_annotations(ch(), an_oop); |
| 0 | 820 } |
|
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821 if (java_lang_reflect_Constructor::has_type_annotations_field()) { |
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822 typeArrayOop an_oop = Annotations::make_java_array(method->type_annotations(), CHECK_NULL); |
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823 java_lang_reflect_Constructor::set_type_annotations(ch(), an_oop); |
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824 } |
| 0 | 825 return ch(); |
| 826 } | |
| 827 | |
| 828 | |
| 829 oop Reflection::new_field(fieldDescriptor* fd, bool intern_name, TRAPS) { | |
|
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830 Symbol* field_name = fd->name(); |
| 0 | 831 Handle name; |
| 832 if (intern_name) { | |
| 833 // intern_name is only true with UseNewReflection | |
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834 oop name_oop = StringTable::intern(field_name, CHECK_NULL); |
| 0 | 835 name = Handle(THREAD, name_oop); |
| 836 } else { | |
| 837 name = java_lang_String::create_from_symbol(field_name, CHECK_NULL); | |
| 838 } | |
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839 Symbol* signature = fd->signature(); |
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840 instanceKlassHandle holder (THREAD, fd->field_holder()); |
| 0 | 841 Handle type = new_type(signature, holder, CHECK_NULL); |
| 842 Handle rh = java_lang_reflect_Field::create(CHECK_NULL); | |
| 843 | |
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844 java_lang_reflect_Field::set_clazz(rh(), fd->field_holder()->java_mirror()); |
| 0 | 845 java_lang_reflect_Field::set_slot(rh(), fd->index()); |
| 846 java_lang_reflect_Field::set_name(rh(), name()); | |
| 847 java_lang_reflect_Field::set_type(rh(), type()); | |
| 848 // Note the ACC_ANNOTATION bit, which is a per-class access flag, is never set here. | |
| 849 java_lang_reflect_Field::set_modifiers(rh(), fd->access_flags().as_int() & JVM_RECOGNIZED_FIELD_MODIFIERS); | |
| 850 java_lang_reflect_Field::set_override(rh(), false); | |
| 851 if (java_lang_reflect_Field::has_signature_field() && | |
|
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852 fd->has_generic_signature()) { |
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853 Symbol* gs = fd->generic_signature(); |
| 0 | 854 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); |
| 855 java_lang_reflect_Field::set_signature(rh(), sig()); | |
| 856 } | |
| 857 if (java_lang_reflect_Field::has_annotations_field()) { | |
|
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858 typeArrayOop an_oop = Annotations::make_java_array(fd->annotations(), CHECK_NULL); |
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859 java_lang_reflect_Field::set_annotations(rh(), an_oop); |
| 0 | 860 } |
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861 if (java_lang_reflect_Field::has_type_annotations_field()) { |
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862 typeArrayOop an_oop = Annotations::make_java_array(fd->type_annotations(), CHECK_NULL); |
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863 java_lang_reflect_Field::set_type_annotations(rh(), an_oop); |
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864 } |
| 0 | 865 return rh(); |
| 866 } | |
| 867 | |
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868 oop Reflection::new_parameter(Handle method, int index, Symbol* sym, |
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869 int flags, TRAPS) { |
|
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870 Handle name; |
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871 |
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872 // A null symbol here translates to the empty string |
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873 if(NULL != sym) { |
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874 name = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
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875 } else { |
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876 name = java_lang_String::create_from_str("", CHECK_NULL); |
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877 } |
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878 |
|
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879 Handle rh = java_lang_reflect_Parameter::create(CHECK_NULL); |
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880 java_lang_reflect_Parameter::set_name(rh(), name()); |
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881 java_lang_reflect_Parameter::set_modifiers(rh(), flags); |
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882 java_lang_reflect_Parameter::set_executable(rh(), method()); |
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883 java_lang_reflect_Parameter::set_index(rh(), index); |
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884 return rh(); |
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885 } |
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886 |
| 0 | 887 |
| 888 methodHandle Reflection::resolve_interface_call(instanceKlassHandle klass, methodHandle method, | |
| 889 KlassHandle recv_klass, Handle receiver, TRAPS) { | |
| 890 assert(!method.is_null() , "method should not be null"); | |
| 891 | |
| 892 CallInfo info; | |
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893 Symbol* signature = method->signature(); |
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894 Symbol* name = method->name(); |
| 0 | 895 LinkResolver::resolve_interface_call(info, receiver, recv_klass, klass, |
| 896 name, signature, | |
| 897 KlassHandle(), false, true, | |
| 898 CHECK_(methodHandle())); | |
| 899 return info.selected_method(); | |
| 900 } | |
| 901 | |
| 902 | |
| 903 oop Reflection::invoke(instanceKlassHandle klass, methodHandle reflected_method, | |
| 904 Handle receiver, bool override, objArrayHandle ptypes, | |
| 905 BasicType rtype, objArrayHandle args, bool is_method_invoke, TRAPS) { | |
| 906 ResourceMark rm(THREAD); | |
| 907 | |
| 908 methodHandle method; // actual method to invoke | |
| 909 KlassHandle target_klass; // target klass, receiver's klass for non-static | |
| 910 | |
| 911 // Ensure klass is initialized | |
| 912 klass->initialize(CHECK_NULL); | |
| 913 | |
| 914 bool is_static = reflected_method->is_static(); | |
| 915 if (is_static) { | |
| 916 // ignore receiver argument | |
| 917 method = reflected_method; | |
| 918 target_klass = klass; | |
| 919 } else { | |
| 920 // check for null receiver | |
| 921 if (receiver.is_null()) { | |
| 922 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 923 } | |
| 924 // Check class of receiver against class declaring method | |
| 925 if (!receiver->is_a(klass())) { | |
| 926 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "object is not an instance of declaring class"); | |
| 927 } | |
| 928 // target klass is receiver's klass | |
| 929 target_klass = KlassHandle(THREAD, receiver->klass()); | |
| 930 // no need to resolve if method is private or <init> | |
| 931 if (reflected_method->is_private() || reflected_method->name() == vmSymbols::object_initializer_name()) { | |
| 932 method = reflected_method; | |
| 933 } else { | |
| 934 // resolve based on the receiver | |
|
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935 if (reflected_method->method_holder()->is_interface()) { |
| 0 | 936 // resolve interface call |
| 937 if (ReflectionWrapResolutionErrors) { | |
| 938 // new default: 6531596 | |
| 939 // Match resolution errors with those thrown due to reflection inlining | |
| 940 // Linktime resolution & IllegalAccessCheck already done by Class.getMethod() | |
| 941 method = resolve_interface_call(klass, reflected_method, target_klass, receiver, THREAD); | |
| 942 if (HAS_PENDING_EXCEPTION) { | |
| 943 // Method resolution threw an exception; wrap it in an InvocationTargetException | |
| 944 oop resolution_exception = PENDING_EXCEPTION; | |
| 945 CLEAR_PENDING_EXCEPTION; | |
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946 // JVMTI has already reported the pending exception |
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947 // JVMTI internal flag reset is needed in order to report InvocationTargetException |
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948 if (THREAD->is_Java_thread()) { |
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949 JvmtiExport::clear_detected_exception((JavaThread*) THREAD); |
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950 } |
| 0 | 951 JavaCallArguments args(Handle(THREAD, resolution_exception)); |
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952 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(), |
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953 vmSymbols::throwable_void_signature(), |
| 0 | 954 &args); |
| 955 } | |
| 956 } else { | |
| 957 method = resolve_interface_call(klass, reflected_method, target_klass, receiver, CHECK_(NULL)); | |
| 958 } | |
| 959 } else { | |
| 960 // if the method can be overridden, we resolve using the vtable index. | |
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961 assert(!reflected_method->has_itable_index(), ""); |
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962 int index = reflected_method->vtable_index(); |
| 0 | 963 method = reflected_method; |
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964 if (index != Method::nonvirtual_vtable_index) { |
| 0 | 965 // target_klass might be an arrayKlassOop but all vtables start at |
| 966 // the same place. The cast is to avoid virtual call and assertion. | |
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967 InstanceKlass* inst = (InstanceKlass*)target_klass(); |
| 0 | 968 method = methodHandle(THREAD, inst->method_at_vtable(index)); |
| 969 } | |
| 970 if (!method.is_null()) { | |
| 971 // Check for abstract methods as well | |
| 972 if (method->is_abstract()) { | |
| 973 // new default: 6531596 | |
| 974 if (ReflectionWrapResolutionErrors) { | |
| 975 ResourceMark rm(THREAD); | |
| 976 Handle h_origexception = Exceptions::new_exception(THREAD, | |
| 977 vmSymbols::java_lang_AbstractMethodError(), | |
| 6983 | 978 Method::name_and_sig_as_C_string(target_klass(), |
| 0 | 979 method->name(), |
| 980 method->signature())); | |
| 981 JavaCallArguments args(h_origexception); | |
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982 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(), |
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983 vmSymbols::throwable_void_signature(), |
| 0 | 984 &args); |
| 985 } else { | |
| 986 ResourceMark rm(THREAD); | |
| 987 THROW_MSG_0(vmSymbols::java_lang_AbstractMethodError(), | |
| 6983 | 988 Method::name_and_sig_as_C_string(target_klass(), |
| 0 | 989 method->name(), |
| 990 method->signature())); | |
| 991 } | |
| 992 } | |
| 993 } | |
| 994 } | |
| 995 } | |
| 996 } | |
| 997 | |
| 998 // I believe this is a ShouldNotGetHere case which requires | |
| 999 // an internal vtable bug. If you ever get this please let Karen know. | |
| 1000 if (method.is_null()) { | |
| 1001 ResourceMark rm(THREAD); | |
| 1002 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
| 6983 | 1003 Method::name_and_sig_as_C_string(klass(), |
| 0 | 1004 reflected_method->name(), |
| 1005 reflected_method->signature())); | |
| 1006 } | |
| 1007 | |
| 1008 // In the JDK 1.4 reflection implementation, the security check is | |
| 1009 // done at the Java level | |
| 1010 if (!(JDK_Version::is_gte_jdk14x_version() && UseNewReflection)) { | |
| 1011 | |
| 1012 // Access checking (unless overridden by Method) | |
| 1013 if (!override) { | |
| 1014 if (!(klass->is_public() && reflected_method->is_public())) { | |
| 1015 bool access = Reflection::reflect_check_access(klass(), reflected_method->access_flags(), target_klass(), is_method_invoke, CHECK_NULL); | |
| 1016 if (!access) { | |
| 1017 return NULL; // exception | |
| 1018 } | |
| 1019 } | |
| 1020 } | |
| 1021 | |
| 1022 } // !(Universe::is_gte_jdk14x_version() && UseNewReflection) | |
| 1023 | |
| 1024 assert(ptypes->is_objArray(), "just checking"); | |
| 1025 int args_len = args.is_null() ? 0 : args->length(); | |
| 1026 // Check number of arguments | |
| 1027 if (ptypes->length() != args_len) { | |
| 1028 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "wrong number of arguments"); | |
| 1029 } | |
| 1030 | |
| 1031 // Create object to contain parameters for the JavaCall | |
| 1032 JavaCallArguments java_args(method->size_of_parameters()); | |
| 1033 | |
| 1034 if (!is_static) { | |
| 1035 java_args.push_oop(receiver); | |
| 1036 } | |
| 1037 | |
| 1038 for (int i = 0; i < args_len; i++) { | |
| 1039 oop type_mirror = ptypes->obj_at(i); | |
| 1040 oop arg = args->obj_at(i); | |
| 1041 if (java_lang_Class::is_primitive(type_mirror)) { | |
| 1042 jvalue value; | |
| 1043 BasicType ptype = basic_type_mirror_to_basic_type(type_mirror, CHECK_NULL); | |
| 1044 BasicType atype = unbox_for_primitive(arg, &value, CHECK_NULL); | |
| 1045 if (ptype != atype) { | |
| 1046 widen(&value, atype, ptype, CHECK_NULL); | |
| 1047 } | |
| 1048 switch (ptype) { | |
| 1049 case T_BOOLEAN: java_args.push_int(value.z); break; | |
| 1050 case T_CHAR: java_args.push_int(value.c); break; | |
| 1051 case T_BYTE: java_args.push_int(value.b); break; | |
| 1052 case T_SHORT: java_args.push_int(value.s); break; | |
| 1053 case T_INT: java_args.push_int(value.i); break; | |
| 1054 case T_LONG: java_args.push_long(value.j); break; | |
| 1055 case T_FLOAT: java_args.push_float(value.f); break; | |
| 1056 case T_DOUBLE: java_args.push_double(value.d); break; | |
| 1057 default: | |
| 1058 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
| 1059 } | |
| 1060 } else { | |
| 1061 if (arg != NULL) { | |
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1062 Klass* k = java_lang_Class::as_Klass(type_mirror); |
| 0 | 1063 if (!arg->is_a(k)) { |
| 1064 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
| 1065 } | |
| 1066 } | |
| 1067 Handle arg_handle(THREAD, arg); // Create handle for argument | |
| 1068 java_args.push_oop(arg_handle); // Push handle | |
| 1069 } | |
| 1070 } | |
| 1071 | |
| 1072 assert(java_args.size_of_parameters() == method->size_of_parameters(), "just checking"); | |
| 1073 | |
| 1074 // All oops (including receiver) is passed in as Handles. An potential oop is returned as an | |
| 1075 // oop (i.e., NOT as an handle) | |
| 1076 JavaValue result(rtype); | |
| 1077 JavaCalls::call(&result, method, &java_args, THREAD); | |
| 1078 | |
| 1079 if (HAS_PENDING_EXCEPTION) { | |
| 1080 // Method threw an exception; wrap it in an InvocationTargetException | |
| 1081 oop target_exception = PENDING_EXCEPTION; | |
| 1082 CLEAR_PENDING_EXCEPTION; | |
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1083 // JVMTI has already reported the pending exception |
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1084 // JVMTI internal flag reset is needed in order to report InvocationTargetException |
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1085 if (THREAD->is_Java_thread()) { |
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1086 JvmtiExport::clear_detected_exception((JavaThread*) THREAD); |
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1087 } |
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1088 |
| 0 | 1089 JavaCallArguments args(Handle(THREAD, target_exception)); |
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1090 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(), |
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1091 vmSymbols::throwable_void_signature(), |
| 0 | 1092 &args); |
| 1093 } else { | |
| 1094 if (rtype == T_BOOLEAN || rtype == T_BYTE || rtype == T_CHAR || rtype == T_SHORT) | |
| 1095 narrow((jvalue*) result.get_value_addr(), rtype, CHECK_NULL); | |
| 1096 return box((jvalue*) result.get_value_addr(), rtype, CHECK_NULL); | |
| 1097 } | |
| 1098 } | |
| 1099 | |
| 1100 | |
| 1101 void Reflection::narrow(jvalue* value, BasicType narrow_type, TRAPS) { | |
| 1102 switch (narrow_type) { | |
| 1103 case T_BOOLEAN: | |
| 23614 | 1104 value->z = (jboolean) (value->i & 1); |
| 0 | 1105 return; |
| 1106 case T_BYTE: | |
| 1107 value->b = (jbyte) value->i; | |
| 1108 return; | |
| 1109 case T_CHAR: | |
| 1110 value->c = (jchar) value->i; | |
| 1111 return; | |
| 1112 case T_SHORT: | |
| 1113 value->s = (jshort) value->i; | |
| 1114 return; | |
| 1115 default: | |
| 1116 break; // fail | |
| 1117 } | |
| 1118 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
| 1119 } | |
| 1120 | |
| 1121 | |
| 1122 BasicType Reflection::basic_type_mirror_to_basic_type(oop basic_type_mirror, TRAPS) { | |
| 1123 assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking"); | |
| 1124 return java_lang_Class::primitive_type(basic_type_mirror); | |
| 1125 } | |
| 1126 | |
| 1127 // This would be nicer if, say, java.lang.reflect.Method was a subclass | |
| 1128 // of java.lang.reflect.Constructor | |
| 1129 | |
| 1130 oop Reflection::invoke_method(oop method_mirror, Handle receiver, objArrayHandle args, TRAPS) { | |
| 1131 oop mirror = java_lang_reflect_Method::clazz(method_mirror); | |
| 1132 int slot = java_lang_reflect_Method::slot(method_mirror); | |
| 1133 bool override = java_lang_reflect_Method::override(method_mirror) != 0; | |
| 1134 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Method::parameter_types(method_mirror))); | |
| 1135 | |
| 1136 oop return_type_mirror = java_lang_reflect_Method::return_type(method_mirror); | |
| 1137 BasicType rtype; | |
| 1138 if (java_lang_Class::is_primitive(return_type_mirror)) { | |
| 1139 rtype = basic_type_mirror_to_basic_type(return_type_mirror, CHECK_NULL); | |
| 1140 } else { | |
| 1141 rtype = T_OBJECT; | |
| 1142 } | |
| 1143 | |
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1144 instanceKlassHandle klass(THREAD, java_lang_Class::as_Klass(mirror)); |
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1145 Method* m = klass->method_with_idnum(slot); |
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1146 if (m == NULL) { |
| 0 | 1147 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke"); |
| 1148 } | |
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1149 methodHandle method(THREAD, m); |
| 0 | 1150 |
| 1151 return invoke(klass, method, receiver, override, ptypes, rtype, args, true, THREAD); | |
| 1152 } | |
| 1153 | |
| 1154 | |
| 1155 oop Reflection::invoke_constructor(oop constructor_mirror, objArrayHandle args, TRAPS) { | |
| 1156 oop mirror = java_lang_reflect_Constructor::clazz(constructor_mirror); | |
| 1157 int slot = java_lang_reflect_Constructor::slot(constructor_mirror); | |
| 1158 bool override = java_lang_reflect_Constructor::override(constructor_mirror) != 0; | |
| 1159 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Constructor::parameter_types(constructor_mirror))); | |
| 1160 | |
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1161 instanceKlassHandle klass(THREAD, java_lang_Class::as_Klass(mirror)); |
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1162 Method* m = klass->method_with_idnum(slot); |
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1163 if (m == NULL) { |
| 0 | 1164 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke"); |
| 1165 } | |
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1166 methodHandle method(THREAD, m); |
| 0 | 1167 assert(method->name() == vmSymbols::object_initializer_name(), "invalid constructor"); |
| 1168 | |
| 1169 // Make sure klass gets initialize | |
| 1170 klass->initialize(CHECK_NULL); | |
| 1171 | |
| 1172 // Create new instance (the receiver) | |
| 1173 klass->check_valid_for_instantiation(false, CHECK_NULL); | |
| 1174 Handle receiver = klass->allocate_instance_handle(CHECK_NULL); | |
| 1175 | |
| 1176 // Ignore result from call and return receiver | |
| 1177 invoke(klass, method, receiver, override, ptypes, T_VOID, args, false, CHECK_NULL); | |
| 1178 return receiver(); | |
| 1179 } |