Mercurial > hg > truffle
annotate src/share/vm/runtime/reflection.cpp @ 13212:eb03a7335eb0
Use fixed instead of virtual register for target in far foreign call, since the register allocator does not support virtual registers to be used at call sites.
| author | Christian Wimmer <christian.wimmer@oracle.com> |
|---|---|
| date | Mon, 02 Dec 2013 14:20:32 -0800 |
| parents | b2e698d2276c |
| children | cdf20166ec45 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2013, 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" | |
| 39 #include "runtime/arguments.hpp" | |
| 40 #include "runtime/handles.inline.hpp" | |
| 41 #include "runtime/javaCalls.hpp" | |
| 42 #include "runtime/reflection.hpp" | |
| 43 #include "runtime/reflectionUtils.hpp" | |
| 44 #include "runtime/signature.hpp" | |
| 45 #include "runtime/vframe.hpp" | |
| 0 | 46 |
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47 static void trace_class_resolution(Klass* to_class) { |
| 0 | 48 ResourceMark rm; |
| 49 int line_number = -1; | |
| 50 const char * source_file = NULL; | |
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51 Klass* caller = NULL; |
| 0 | 52 JavaThread* jthread = JavaThread::current(); |
| 53 if (jthread->has_last_Java_frame()) { | |
| 54 vframeStream vfst(jthread); | |
| 55 // skip over any frames belonging to java.lang.Class | |
| 56 while (!vfst.at_end() && | |
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57 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class()) { |
| 0 | 58 vfst.next(); |
| 59 } | |
| 60 if (!vfst.at_end()) { | |
| 61 // this frame is a likely suspect | |
| 62 caller = vfst.method()->method_holder(); | |
| 63 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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64 Symbol* s = vfst.method()->method_holder()->source_file_name(); |
| 0 | 65 if (s != NULL) { |
| 66 source_file = s->as_C_string(); | |
| 67 } | |
| 68 } | |
| 69 } | |
| 70 if (caller != NULL) { | |
| 6983 | 71 const char * from = caller->external_name(); |
| 72 const char * to = to_class->external_name(); | |
| 0 | 73 // print in a single call to reduce interleaving between threads |
| 74 if (source_file != NULL) { | |
| 75 tty->print("RESOLVE %s %s %s:%d (reflection)\n", from, to, source_file, line_number); | |
| 76 } else { | |
| 77 tty->print("RESOLVE %s %s (reflection)\n", from, to); | |
| 78 } | |
| 79 } | |
| 80 } | |
| 81 | |
| 82 | |
| 83 oop Reflection::box(jvalue* value, BasicType type, TRAPS) { | |
| 84 if (type == T_VOID) { | |
| 85 return NULL; | |
| 86 } | |
| 87 if (type == T_OBJECT || type == T_ARRAY) { | |
| 88 // regular objects are not boxed | |
| 89 return (oop) value->l; | |
| 90 } | |
| 91 oop result = java_lang_boxing_object::create(type, value, CHECK_NULL); | |
| 92 if (result == NULL) { | |
| 93 THROW_(vmSymbols::java_lang_IllegalArgumentException(), result); | |
| 94 } | |
| 95 return result; | |
| 96 } | |
| 97 | |
| 98 | |
| 99 BasicType Reflection::unbox_for_primitive(oop box, jvalue* value, TRAPS) { | |
| 100 if (box == NULL) { | |
| 101 THROW_(vmSymbols::java_lang_IllegalArgumentException(), T_ILLEGAL); | |
| 102 } | |
| 103 return java_lang_boxing_object::get_value(box, value); | |
| 104 } | |
| 105 | |
| 106 BasicType Reflection::unbox_for_regular_object(oop box, jvalue* value) { | |
| 107 // Note: box is really the unboxed oop. It might even be a Short, etc.! | |
| 108 value->l = (jobject) box; | |
| 109 return T_OBJECT; | |
| 110 } | |
| 111 | |
| 112 | |
| 113 void Reflection::widen(jvalue* value, BasicType current_type, BasicType wide_type, TRAPS) { | |
| 114 assert(wide_type != current_type, "widen should not be called with identical types"); | |
| 115 switch (wide_type) { | |
| 116 case T_BOOLEAN: | |
| 117 case T_BYTE: | |
| 118 case T_CHAR: | |
| 119 break; // fail | |
| 120 case T_SHORT: | |
| 121 switch (current_type) { | |
| 122 case T_BYTE: | |
| 123 value->s = (jshort) value->b; | |
| 124 return; | |
| 125 } | |
| 126 break; // fail | |
| 127 case T_INT: | |
| 128 switch (current_type) { | |
| 129 case T_BYTE: | |
| 130 value->i = (jint) value->b; | |
| 131 return; | |
| 132 case T_CHAR: | |
| 133 value->i = (jint) value->c; | |
| 134 return; | |
| 135 case T_SHORT: | |
| 136 value->i = (jint) value->s; | |
| 137 return; | |
| 138 } | |
| 139 break; // fail | |
| 140 case T_LONG: | |
| 141 switch (current_type) { | |
| 142 case T_BYTE: | |
| 143 value->j = (jlong) value->b; | |
| 144 return; | |
| 145 case T_CHAR: | |
| 146 value->j = (jlong) value->c; | |
| 147 return; | |
| 148 case T_SHORT: | |
| 149 value->j = (jlong) value->s; | |
| 150 return; | |
| 151 case T_INT: | |
| 152 value->j = (jlong) value->i; | |
| 153 return; | |
| 154 } | |
| 155 break; // fail | |
| 156 case T_FLOAT: | |
| 157 switch (current_type) { | |
| 158 case T_BYTE: | |
| 159 value->f = (jfloat) value->b; | |
| 160 return; | |
| 161 case T_CHAR: | |
| 162 value->f = (jfloat) value->c; | |
| 163 return; | |
| 164 case T_SHORT: | |
| 165 value->f = (jfloat) value->s; | |
| 166 return; | |
| 167 case T_INT: | |
| 168 value->f = (jfloat) value->i; | |
| 169 return; | |
| 170 case T_LONG: | |
| 171 value->f = (jfloat) value->j; | |
| 172 return; | |
| 173 } | |
| 174 break; // fail | |
| 175 case T_DOUBLE: | |
| 176 switch (current_type) { | |
| 177 case T_BYTE: | |
| 178 value->d = (jdouble) value->b; | |
| 179 return; | |
| 180 case T_CHAR: | |
| 181 value->d = (jdouble) value->c; | |
| 182 return; | |
| 183 case T_SHORT: | |
| 184 value->d = (jdouble) value->s; | |
| 185 return; | |
| 186 case T_INT: | |
| 187 value->d = (jdouble) value->i; | |
| 188 return; | |
| 189 case T_FLOAT: | |
| 190 value->d = (jdouble) value->f; | |
| 191 return; | |
| 192 case T_LONG: | |
| 193 value->d = (jdouble) value->j; | |
| 194 return; | |
| 195 } | |
| 196 break; // fail | |
| 197 default: | |
| 198 break; // fail | |
| 199 } | |
| 200 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
| 201 } | |
| 202 | |
| 203 | |
| 204 BasicType Reflection::array_get(jvalue* value, arrayOop a, int index, TRAPS) { | |
| 205 if (!a->is_within_bounds(index)) { | |
| 206 THROW_(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), T_ILLEGAL); | |
| 207 } | |
| 208 if (a->is_objArray()) { | |
| 209 value->l = (jobject) objArrayOop(a)->obj_at(index); | |
| 210 return T_OBJECT; | |
| 211 } else { | |
| 212 assert(a->is_typeArray(), "just checking"); | |
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213 BasicType type = TypeArrayKlass::cast(a->klass())->element_type(); |
| 0 | 214 switch (type) { |
| 215 case T_BOOLEAN: | |
| 216 value->z = typeArrayOop(a)->bool_at(index); | |
| 217 break; | |
| 218 case T_CHAR: | |
| 219 value->c = typeArrayOop(a)->char_at(index); | |
| 220 break; | |
| 221 case T_FLOAT: | |
| 222 value->f = typeArrayOop(a)->float_at(index); | |
| 223 break; | |
| 224 case T_DOUBLE: | |
| 225 value->d = typeArrayOop(a)->double_at(index); | |
| 226 break; | |
| 227 case T_BYTE: | |
| 228 value->b = typeArrayOop(a)->byte_at(index); | |
| 229 break; | |
| 230 case T_SHORT: | |
| 231 value->s = typeArrayOop(a)->short_at(index); | |
| 232 break; | |
| 233 case T_INT: | |
| 234 value->i = typeArrayOop(a)->int_at(index); | |
| 235 break; | |
| 236 case T_LONG: | |
| 237 value->j = typeArrayOop(a)->long_at(index); | |
| 238 break; | |
| 239 default: | |
| 240 return T_ILLEGAL; | |
| 241 } | |
| 242 return type; | |
| 243 } | |
| 244 } | |
| 245 | |
| 246 | |
| 247 void Reflection::array_set(jvalue* value, arrayOop a, int index, BasicType value_type, TRAPS) { | |
| 248 if (!a->is_within_bounds(index)) { | |
| 249 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 250 } | |
| 251 if (a->is_objArray()) { | |
| 252 if (value_type == T_OBJECT) { | |
| 253 oop obj = (oop) value->l; | |
| 254 if (obj != NULL) { | |
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255 Klass* element_klass = ObjArrayKlass::cast(a->klass())->element_klass(); |
| 0 | 256 if (!obj->is_a(element_klass)) { |
| 257 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "array element type mismatch"); | |
| 258 } | |
| 259 } | |
| 260 objArrayOop(a)->obj_at_put(index, obj); | |
| 261 } | |
| 262 } else { | |
| 263 assert(a->is_typeArray(), "just checking"); | |
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264 BasicType array_type = TypeArrayKlass::cast(a->klass())->element_type(); |
| 0 | 265 if (array_type != value_type) { |
| 266 // The widen operation can potentially throw an exception, but cannot block, | |
| 267 // so typeArrayOop a is safe if the call succeeds. | |
| 268 widen(value, value_type, array_type, CHECK); | |
| 269 } | |
| 270 switch (array_type) { | |
| 271 case T_BOOLEAN: | |
| 272 typeArrayOop(a)->bool_at_put(index, value->z); | |
| 273 break; | |
| 274 case T_CHAR: | |
| 275 typeArrayOop(a)->char_at_put(index, value->c); | |
| 276 break; | |
| 277 case T_FLOAT: | |
| 278 typeArrayOop(a)->float_at_put(index, value->f); | |
| 279 break; | |
| 280 case T_DOUBLE: | |
| 281 typeArrayOop(a)->double_at_put(index, value->d); | |
| 282 break; | |
| 283 case T_BYTE: | |
| 284 typeArrayOop(a)->byte_at_put(index, value->b); | |
| 285 break; | |
| 286 case T_SHORT: | |
| 287 typeArrayOop(a)->short_at_put(index, value->s); | |
| 288 break; | |
| 289 case T_INT: | |
| 290 typeArrayOop(a)->int_at_put(index, value->i); | |
| 291 break; | |
| 292 case T_LONG: | |
| 293 typeArrayOop(a)->long_at_put(index, value->j); | |
| 294 break; | |
| 295 default: | |
| 296 THROW(vmSymbols::java_lang_IllegalArgumentException()); | |
| 297 } | |
| 298 } | |
| 299 } | |
| 300 | |
| 301 | |
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302 Klass* Reflection::basic_type_mirror_to_arrayklass(oop basic_type_mirror, TRAPS) { |
| 0 | 303 assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking"); |
| 304 BasicType type = java_lang_Class::primitive_type(basic_type_mirror); | |
| 305 if (type == T_VOID) { | |
| 306 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
| 307 } else { | |
| 308 return Universe::typeArrayKlassObj(type); | |
| 309 } | |
| 310 } | |
| 311 | |
| 312 | |
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313 oop Reflection:: basic_type_arrayklass_to_mirror(Klass* basic_type_arrayklass, TRAPS) { |
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314 BasicType type = TypeArrayKlass::cast(basic_type_arrayklass)->element_type(); |
| 0 | 315 return Universe::java_mirror(type); |
| 316 } | |
| 317 | |
| 318 | |
| 319 arrayOop Reflection::reflect_new_array(oop element_mirror, jint length, TRAPS) { | |
| 320 if (element_mirror == NULL) { | |
| 321 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 322 } | |
| 323 if (length < 0) { | |
| 324 THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); | |
| 325 } | |
| 326 if (java_lang_Class::is_primitive(element_mirror)) { | |
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327 Klass* tak = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL); |
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328 return TypeArrayKlass::cast(tak)->allocate(length, THREAD); |
| 0 | 329 } else { |
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330 Klass* k = java_lang_Class::as_Klass(element_mirror); |
| 6983 | 331 if (k->oop_is_array() && ArrayKlass::cast(k)->dimension() >= MAX_DIM) { |
| 0 | 332 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); |
| 333 } | |
| 334 return oopFactory::new_objArray(k, length, THREAD); | |
| 335 } | |
| 336 } | |
| 337 | |
| 338 | |
| 339 arrayOop Reflection::reflect_new_multi_array(oop element_mirror, typeArrayOop dim_array, TRAPS) { | |
| 340 assert(dim_array->is_typeArray(), "just checking"); | |
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341 assert(TypeArrayKlass::cast(dim_array->klass())->element_type() == T_INT, "just checking"); |
| 0 | 342 |
| 343 if (element_mirror == NULL) { | |
| 344 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 345 } | |
| 346 | |
| 347 int len = dim_array->length(); | |
| 348 if (len <= 0 || len > MAX_DIM) { | |
| 349 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
| 350 } | |
| 351 | |
| 352 jint dimensions[MAX_DIM]; // C array copy of intArrayOop | |
| 353 for (int i = 0; i < len; i++) { | |
| 354 int d = dim_array->int_at(i); | |
| 355 if (d < 0) { | |
| 356 THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); | |
| 357 } | |
| 358 dimensions[i] = d; | |
| 359 } | |
| 360 | |
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361 Klass* klass; |
| 0 | 362 int dim = len; |
| 363 if (java_lang_Class::is_primitive(element_mirror)) { | |
| 364 klass = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL); | |
| 365 } else { | |
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366 klass = java_lang_Class::as_Klass(element_mirror); |
| 6983 | 367 if (klass->oop_is_array()) { |
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368 int k_dim = ArrayKlass::cast(klass)->dimension(); |
| 0 | 369 if (k_dim + len > MAX_DIM) { |
| 370 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
| 371 } | |
| 372 dim += k_dim; | |
| 373 } | |
| 374 } | |
| 6983 | 375 klass = klass->array_klass(dim, CHECK_NULL); |
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376 oop obj = ArrayKlass::cast(klass)->multi_allocate(len, dimensions, CHECK_NULL); |
| 0 | 377 assert(obj->is_array(), "just checking"); |
| 378 return arrayOop(obj); | |
| 379 } | |
| 380 | |
| 381 | |
| 382 oop Reflection::array_component_type(oop mirror, TRAPS) { | |
| 383 if (java_lang_Class::is_primitive(mirror)) { | |
| 384 return NULL; | |
| 385 } | |
| 386 | |
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387 Klass* klass = java_lang_Class::as_Klass(mirror); |
| 6983 | 388 if (!klass->oop_is_array()) { |
| 0 | 389 return NULL; |
| 390 } | |
| 391 | |
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392 oop result = ArrayKlass::cast(klass)->component_mirror(); |
| 0 | 393 #ifdef ASSERT |
| 394 oop result2 = NULL; | |
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395 if (ArrayKlass::cast(klass)->dimension() == 1) { |
| 6983 | 396 if (klass->oop_is_typeArray()) { |
| 0 | 397 result2 = basic_type_arrayklass_to_mirror(klass, CHECK_NULL); |
| 398 } else { | |
| 6983 | 399 result2 = ObjArrayKlass::cast(klass)->element_klass()->java_mirror(); |
| 0 | 400 } |
| 401 } else { | |
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402 Klass* lower_dim = ArrayKlass::cast(klass)->lower_dimension(); |
| 6983 | 403 assert(lower_dim->oop_is_array(), "just checking"); |
| 404 result2 = lower_dim->java_mirror(); | |
| 0 | 405 } |
| 406 assert(result == result2, "results must be consistent"); | |
| 407 #endif //ASSERT | |
| 408 return result; | |
| 409 } | |
| 410 | |
| 411 | |
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412 bool Reflection::reflect_check_access(Klass* field_class, AccessFlags acc, Klass* target_class, bool is_method_invoke, TRAPS) { |
| 0 | 413 // field_class : declaring class |
| 414 // acc : declared field access | |
| 415 // target_class : for protected | |
| 416 | |
| 417 // Check if field or method is accessible to client. Throw an | |
| 418 // IllegalAccessException and return false if not. | |
| 419 | |
| 420 // The "client" is the class associated with the nearest real frame | |
| 421 // getCallerClass already skips Method.invoke frames, so pass 0 in | |
| 422 // that case (same as classic). | |
| 423 ResourceMark rm(THREAD); | |
| 424 assert(THREAD->is_Java_thread(), "sanity check"); | |
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425 Klass* client_class = ((JavaThread *)THREAD)->security_get_caller_class(is_method_invoke ? 0 : 1); |
| 0 | 426 |
| 427 if (client_class != field_class) { | |
| 428 if (!verify_class_access(client_class, field_class, false) | |
| 429 || !verify_field_access(client_class, | |
| 430 field_class, | |
| 431 field_class, | |
| 432 acc, | |
| 433 false)) { | |
| 434 THROW_(vmSymbols::java_lang_IllegalAccessException(), false); | |
| 435 } | |
| 436 } | |
| 437 | |
| 438 // Additional test for protected members: JLS 6.6.2 | |
| 439 | |
| 440 if (acc.is_protected()) { | |
| 441 if (target_class != client_class) { | |
| 442 if (!is_same_class_package(client_class, field_class)) { | |
| 6983 | 443 if (!target_class->is_subclass_of(client_class)) { |
| 0 | 444 THROW_(vmSymbols::java_lang_IllegalAccessException(), false); |
| 445 } | |
| 446 } | |
| 447 } | |
| 448 } | |
| 449 | |
| 450 // Passed all tests | |
| 451 return true; | |
| 452 } | |
| 453 | |
| 454 | |
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455 bool Reflection::verify_class_access(Klass* current_class, Klass* new_class, bool classloader_only) { |
| 0 | 456 // Verify that current_class can access new_class. If the classloader_only |
| 457 // flag is set, we automatically allow any accesses in which current_class | |
| 458 // doesn't have a classloader. | |
| 459 if ((current_class == NULL) || | |
| 460 (current_class == new_class) || | |
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461 (new_class->is_public()) || |
| 0 | 462 is_same_class_package(current_class, new_class)) { |
| 463 return true; | |
| 464 } | |
| 465 // New (1.4) reflection implementation. Allow all accesses from | |
| 466 // sun/reflect/MagicAccessorImpl subclasses to succeed trivially. | |
| 467 if ( JDK_Version::is_gte_jdk14x_version() | |
| 468 && UseNewReflection | |
| 6983 | 469 && current_class->is_subclass_of(SystemDictionary::reflect_MagicAccessorImpl_klass())) { |
| 0 | 470 return true; |
| 471 } | |
| 472 | |
| 6934 | 473 // Also allow all accesses from |
| 474 // java/lang/invoke/MagicLambdaImpl subclasses to succeed trivially. | |
| 475 if (current_class->is_subclass_of(SystemDictionary::lambda_MagicLambdaImpl_klass())) { | |
| 476 return true; | |
| 477 } | |
| 478 | |
| 0 | 479 return can_relax_access_check_for(current_class, new_class, classloader_only); |
| 480 } | |
| 481 | |
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482 static bool under_host_klass(InstanceKlass* ik, Klass* host_klass) { |
|
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483 DEBUG_ONLY(int inf_loop_check = 1000 * 1000 * 1000); |
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484 for (;;) { |
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485 Klass* hc = (Klass*) ik->host_klass(); |
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486 if (hc == NULL) return false; |
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487 if (hc == host_klass) return true; |
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488 ik = InstanceKlass::cast(hc); |
|
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489 |
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490 // There's no way to make a host class loop short of patching memory. |
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491 // Therefore there cannot be a loop here unles there's another bug. |
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492 // Still, let's check for it. |
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493 assert(--inf_loop_check > 0, "no host_klass loop"); |
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494 } |
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495 } |
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496 |
| 0 | 497 bool Reflection::can_relax_access_check_for( |
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498 Klass* accessor, Klass* accessee, bool classloader_only) { |
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499 InstanceKlass* accessor_ik = InstanceKlass::cast(accessor); |
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500 InstanceKlass* accessee_ik = InstanceKlass::cast(accessee); |
|
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501 |
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502 // If either is on the other's host_klass chain, access is OK, |
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503 // because one is inside the other. |
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504 if (under_host_klass(accessor_ik, accessee) || |
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505 under_host_klass(accessee_ik, accessor)) |
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506 return true; |
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507 |
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508 if ((RelaxAccessControlCheck && |
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509 accessor_ik->major_version() < Verifier::NO_RELAX_ACCESS_CTRL_CHECK_VERSION && |
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510 accessee_ik->major_version() < Verifier::NO_RELAX_ACCESS_CTRL_CHECK_VERSION) || |
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511 (accessor_ik->major_version() < Verifier::STRICTER_ACCESS_CTRL_CHECK_VERSION && |
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512 accessee_ik->major_version() < Verifier::STRICTER_ACCESS_CTRL_CHECK_VERSION)) { |
| 0 | 513 return classloader_only && |
| 514 Verifier::relax_verify_for(accessor_ik->class_loader()) && | |
| 515 accessor_ik->protection_domain() == accessee_ik->protection_domain() && | |
| 516 accessor_ik->class_loader() == accessee_ik->class_loader(); | |
| 517 } else { | |
| 518 return false; | |
| 519 } | |
| 520 } | |
| 521 | |
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522 bool Reflection::verify_field_access(Klass* current_class, |
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523 Klass* resolved_class, |
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524 Klass* field_class, |
| 0 | 525 AccessFlags access, |
| 526 bool classloader_only, | |
| 527 bool protected_restriction) { | |
| 528 // Verify that current_class can access a field of field_class, where that | |
| 529 // field's access bits are "access". We assume that we've already verified | |
| 530 // that current_class can access field_class. | |
| 531 // | |
| 532 // If the classloader_only flag is set, we automatically allow any accesses | |
| 533 // in which current_class doesn't have a classloader. | |
| 534 // | |
| 535 // "resolved_class" is the runtime type of "field_class". Sometimes we don't | |
| 536 // need this distinction (e.g. if all we have is the runtime type, or during | |
| 537 // class file parsing when we only care about the static type); in that case | |
| 538 // callers should ensure that resolved_class == field_class. | |
| 539 // | |
| 540 if ((current_class == NULL) || | |
| 541 (current_class == field_class) || | |
| 542 access.is_public()) { | |
| 543 return true; | |
| 544 } | |
| 545 | |
| 546 if (access.is_protected()) { | |
| 547 if (!protected_restriction) { | |
| 548 // See if current_class is a subclass of field_class | |
| 6983 | 549 if (current_class->is_subclass_of(field_class)) { |
| 115 | 550 if (access.is_static() || // static fields are ok, see 6622385 |
| 551 current_class == resolved_class || | |
| 0 | 552 field_class == resolved_class || |
| 6983 | 553 current_class->is_subclass_of(resolved_class) || |
| 554 resolved_class->is_subclass_of(current_class)) { | |
| 0 | 555 return true; |
| 556 } | |
| 557 } | |
| 558 } | |
| 559 } | |
| 560 | |
| 561 if (!access.is_private() && is_same_class_package(current_class, field_class)) { | |
| 562 return true; | |
| 563 } | |
| 564 | |
| 565 // New (1.4) reflection implementation. Allow all accesses from | |
| 566 // sun/reflect/MagicAccessorImpl subclasses to succeed trivially. | |
| 567 if ( JDK_Version::is_gte_jdk14x_version() | |
| 568 && UseNewReflection | |
| 6983 | 569 && current_class->is_subclass_of(SystemDictionary::reflect_MagicAccessorImpl_klass())) { |
| 0 | 570 return true; |
| 571 } | |
| 572 | |
| 6934 | 573 // Also allow all accesses from |
| 574 // java/lang/invoke/MagicLambdaImpl subclasses to succeed trivially. | |
| 575 if (current_class->is_subclass_of(SystemDictionary::lambda_MagicLambdaImpl_klass())) { | |
| 576 return true; | |
| 577 } | |
| 578 | |
| 0 | 579 return can_relax_access_check_for( |
| 580 current_class, field_class, classloader_only); | |
| 581 } | |
| 582 | |
| 583 | |
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584 bool Reflection::is_same_class_package(Klass* class1, Klass* class2) { |
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585 return InstanceKlass::cast(class1)->is_same_class_package(class2); |
| 0 | 586 } |
| 587 | |
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588 bool Reflection::is_same_package_member(Klass* class1, Klass* class2, TRAPS) { |
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589 return InstanceKlass::cast(class1)->is_same_package_member(class2, THREAD); |
|
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590 } |
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591 |
| 0 | 592 |
| 593 // Checks that the 'outer' klass has declared 'inner' as being an inner klass. If not, | |
| 594 // throw an incompatible class change exception | |
|
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595 // If inner_is_member, require the inner to be a member of the outer. |
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596 // If !inner_is_member, require the inner to be anonymous (a non-member). |
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597 // Caller is responsible for figuring out in advance which case must be true. |
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598 void Reflection::check_for_inner_class(instanceKlassHandle outer, instanceKlassHandle inner, |
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599 bool inner_is_member, TRAPS) { |
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600 InnerClassesIterator iter(outer); |
| 0 | 601 constantPoolHandle cp (THREAD, outer->constants()); |
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602 for (; !iter.done(); iter.next()) { |
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603 int ioff = iter.inner_class_info_index(); |
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604 int ooff = iter.outer_class_info_index(); |
| 0 | 605 |
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606 if (inner_is_member && ioff != 0 && ooff != 0) { |
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607 Klass* o = cp->klass_at(ooff, CHECK); |
| 0 | 608 if (o == outer()) { |
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609 Klass* i = cp->klass_at(ioff, CHECK); |
| 0 | 610 if (i == inner()) { |
| 611 return; | |
| 612 } | |
| 613 } | |
| 614 } | |
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615 if (!inner_is_member && ioff != 0 && ooff == 0 && |
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616 cp->klass_name_at_matches(inner, ioff)) { |
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617 Klass* i = cp->klass_at(ioff, CHECK); |
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618 if (i == inner()) { |
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619 return; |
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620 } |
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621 } |
| 0 | 622 } |
| 623 | |
| 624 // 'inner' not declared as an inner klass in outer | |
| 625 ResourceMark rm(THREAD); | |
| 626 Exceptions::fthrow( | |
| 627 THREAD_AND_LOCATION, | |
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628 vmSymbols::java_lang_IncompatibleClassChangeError(), |
| 0 | 629 "%s and %s disagree on InnerClasses attribute", |
| 630 outer->external_name(), | |
| 631 inner->external_name() | |
| 632 ); | |
| 633 } | |
| 634 | |
| 635 // Utility method converting a single SignatureStream element into java.lang.Class instance | |
| 636 | |
| 637 oop get_mirror_from_signature(methodHandle method, SignatureStream* ss, TRAPS) { | |
| 638 switch (ss->type()) { | |
| 639 default: | |
| 640 assert(ss->type() != T_VOID || ss->at_return_type(), "T_VOID should only appear as return type"); | |
| 641 return java_lang_Class::primitive_mirror(ss->type()); | |
| 642 case T_OBJECT: | |
| 643 case T_ARRAY: | |
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644 Symbol* name = ss->as_symbol(CHECK_NULL); |
|
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645 oop loader = method->method_holder()->class_loader(); |
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646 oop protection_domain = method->method_holder()->protection_domain(); |
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647 Klass* k = SystemDictionary::resolve_or_fail( |
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648 name, |
| 0 | 649 Handle(THREAD, loader), |
| 650 Handle(THREAD, protection_domain), | |
| 651 true, CHECK_NULL); | |
| 652 if (TraceClassResolution) { | |
| 653 trace_class_resolution(k); | |
| 654 } | |
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655 return k->java_mirror(); |
| 0 | 656 }; |
| 657 } | |
| 658 | |
| 659 | |
| 660 objArrayHandle Reflection::get_parameter_types(methodHandle method, int parameter_count, oop* return_type, TRAPS) { | |
| 661 // Allocate array holding parameter types (java.lang.Class instances) | |
| 1142 | 662 objArrayOop m = oopFactory::new_objArray(SystemDictionary::Class_klass(), parameter_count, CHECK_(objArrayHandle())); |
| 0 | 663 objArrayHandle mirrors (THREAD, m); |
| 664 int index = 0; | |
| 665 // Collect parameter types | |
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666 ResourceMark rm(THREAD); |
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667 Symbol* signature = method->signature(); |
| 0 | 668 SignatureStream ss(signature); |
| 669 while (!ss.at_return_type()) { | |
| 670 oop mirror = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle())); | |
| 671 mirrors->obj_at_put(index++, mirror); | |
| 672 ss.next(); | |
| 673 } | |
| 674 assert(index == parameter_count, "invalid parameter count"); | |
| 675 if (return_type != NULL) { | |
| 676 // Collect return type as well | |
| 677 assert(ss.at_return_type(), "return type should be present"); | |
| 678 *return_type = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle())); | |
| 679 } | |
| 680 return mirrors; | |
| 681 } | |
| 682 | |
| 683 objArrayHandle Reflection::get_exception_types(methodHandle method, TRAPS) { | |
| 684 return method->resolved_checked_exceptions(CHECK_(objArrayHandle())); | |
| 685 } | |
| 686 | |
| 687 | |
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688 Handle Reflection::new_type(Symbol* signature, KlassHandle k, TRAPS) { |
| 0 | 689 // Basic types |
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690 BasicType type = vmSymbols::signature_type(signature); |
| 0 | 691 if (type != T_OBJECT) { |
| 692 return Handle(THREAD, Universe::java_mirror(type)); | |
| 693 } | |
| 694 | |
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695 oop loader = InstanceKlass::cast(k())->class_loader(); |
| 6983 | 696 oop protection_domain = k()->protection_domain(); |
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697 Klass* result = SystemDictionary::resolve_or_fail(signature, |
| 0 | 698 Handle(THREAD, loader), |
| 699 Handle(THREAD, protection_domain), | |
| 700 true, CHECK_(Handle())); | |
| 701 | |
| 702 if (TraceClassResolution) { | |
| 703 trace_class_resolution(result); | |
| 704 } | |
| 705 | |
| 6983 | 706 oop nt = result->java_mirror(); |
| 0 | 707 return Handle(THREAD, nt); |
| 708 } | |
| 709 | |
| 710 | |
| 711 oop Reflection::new_method(methodHandle method, bool intern_name, bool for_constant_pool_access, TRAPS) { | |
| 712 // In jdk1.2.x, getMethods on an interface erroneously includes <clinit>, thus the complicated assert. | |
| 713 // Also allow sun.reflect.ConstantPool to refer to <clinit> methods as java.lang.reflect.Methods. | |
| 714 assert(!method()->is_initializer() || | |
| 715 (for_constant_pool_access && method()->is_static()) || | |
| 716 (method()->name() == vmSymbols::class_initializer_name() | |
|
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717 && method()->method_holder()->is_interface() && JDK_Version::is_jdk12x_version()), "should call new_constructor instead"); |
| 0 | 718 instanceKlassHandle holder (THREAD, method->method_holder()); |
| 719 int slot = method->method_idnum(); | |
| 720 | |
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721 Symbol* signature = method->signature(); |
| 0 | 722 int parameter_count = ArgumentCount(signature).size(); |
| 723 oop return_type_oop = NULL; | |
| 724 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, &return_type_oop, CHECK_NULL); | |
| 725 if (parameter_types.is_null() || return_type_oop == NULL) return NULL; | |
| 726 | |
| 727 Handle return_type(THREAD, return_type_oop); | |
| 728 | |
| 729 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL); | |
| 730 | |
| 731 if (exception_types.is_null()) return NULL; | |
| 732 | |
|
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733 Symbol* method_name = method->name(); |
| 0 | 734 Handle name; |
| 735 if (intern_name) { | |
| 736 // intern_name is only true with UseNewReflection | |
|
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737 oop name_oop = StringTable::intern(method_name, CHECK_NULL); |
| 0 | 738 name = Handle(THREAD, name_oop); |
| 739 } else { | |
| 740 name = java_lang_String::create_from_symbol(method_name, CHECK_NULL); | |
| 741 } | |
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742 if (name == NULL) return NULL; |
| 0 | 743 |
| 744 int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 745 | |
| 746 Handle mh = java_lang_reflect_Method::create(CHECK_NULL); | |
| 747 | |
| 748 java_lang_reflect_Method::set_clazz(mh(), holder->java_mirror()); | |
| 749 java_lang_reflect_Method::set_slot(mh(), slot); | |
| 750 java_lang_reflect_Method::set_name(mh(), name()); | |
| 751 java_lang_reflect_Method::set_return_type(mh(), return_type()); | |
| 752 java_lang_reflect_Method::set_parameter_types(mh(), parameter_types()); | |
| 753 java_lang_reflect_Method::set_exception_types(mh(), exception_types()); | |
| 754 java_lang_reflect_Method::set_modifiers(mh(), modifiers); | |
| 755 java_lang_reflect_Method::set_override(mh(), false); | |
| 756 if (java_lang_reflect_Method::has_signature_field() && | |
| 757 method->generic_signature() != NULL) { | |
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758 Symbol* gs = method->generic_signature(); |
| 0 | 759 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); |
| 760 java_lang_reflect_Method::set_signature(mh(), sig()); | |
| 761 } | |
| 762 if (java_lang_reflect_Method::has_annotations_field()) { | |
|
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763 typeArrayOop an_oop = Annotations::make_java_array(method->annotations(), CHECK_NULL); |
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764 java_lang_reflect_Method::set_annotations(mh(), an_oop); |
| 0 | 765 } |
| 766 if (java_lang_reflect_Method::has_parameter_annotations_field()) { | |
|
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767 typeArrayOop an_oop = Annotations::make_java_array(method->parameter_annotations(), CHECK_NULL); |
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768 java_lang_reflect_Method::set_parameter_annotations(mh(), an_oop); |
| 0 | 769 } |
| 770 if (java_lang_reflect_Method::has_annotation_default_field()) { | |
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771 typeArrayOop an_oop = Annotations::make_java_array(method->annotation_default(), CHECK_NULL); |
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772 java_lang_reflect_Method::set_annotation_default(mh(), an_oop); |
| 0 | 773 } |
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774 if (java_lang_reflect_Method::has_type_annotations_field()) { |
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775 typeArrayOop an_oop = Annotations::make_java_array(method->type_annotations(), CHECK_NULL); |
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776 java_lang_reflect_Method::set_type_annotations(mh(), an_oop); |
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777 } |
| 0 | 778 return mh(); |
| 779 } | |
| 780 | |
| 781 | |
| 782 oop Reflection::new_constructor(methodHandle method, TRAPS) { | |
| 783 assert(method()->is_initializer(), "should call new_method instead"); | |
| 784 | |
| 785 instanceKlassHandle holder (THREAD, method->method_holder()); | |
| 786 int slot = method->method_idnum(); | |
| 787 | |
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788 Symbol* signature = method->signature(); |
| 0 | 789 int parameter_count = ArgumentCount(signature).size(); |
| 790 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, NULL, CHECK_NULL); | |
| 791 if (parameter_types.is_null()) return NULL; | |
| 792 | |
| 793 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL); | |
| 794 if (exception_types.is_null()) return NULL; | |
| 795 | |
| 796 int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 797 | |
| 798 Handle ch = java_lang_reflect_Constructor::create(CHECK_NULL); | |
| 799 | |
| 800 java_lang_reflect_Constructor::set_clazz(ch(), holder->java_mirror()); | |
| 801 java_lang_reflect_Constructor::set_slot(ch(), slot); | |
| 802 java_lang_reflect_Constructor::set_parameter_types(ch(), parameter_types()); | |
| 803 java_lang_reflect_Constructor::set_exception_types(ch(), exception_types()); | |
| 804 java_lang_reflect_Constructor::set_modifiers(ch(), modifiers); | |
| 805 java_lang_reflect_Constructor::set_override(ch(), false); | |
| 806 if (java_lang_reflect_Constructor::has_signature_field() && | |
| 807 method->generic_signature() != NULL) { | |
|
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808 Symbol* gs = method->generic_signature(); |
| 0 | 809 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); |
| 810 java_lang_reflect_Constructor::set_signature(ch(), sig()); | |
| 811 } | |
| 812 if (java_lang_reflect_Constructor::has_annotations_field()) { | |
|
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813 typeArrayOop an_oop = Annotations::make_java_array(method->annotations(), CHECK_NULL); |
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814 java_lang_reflect_Constructor::set_annotations(ch(), an_oop); |
| 0 | 815 } |
| 816 if (java_lang_reflect_Constructor::has_parameter_annotations_field()) { | |
|
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817 typeArrayOop an_oop = Annotations::make_java_array(method->parameter_annotations(), CHECK_NULL); |
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818 java_lang_reflect_Constructor::set_parameter_annotations(ch(), an_oop); |
| 0 | 819 } |
|
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820 if (java_lang_reflect_Constructor::has_type_annotations_field()) { |
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821 typeArrayOop an_oop = Annotations::make_java_array(method->type_annotations(), CHECK_NULL); |
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822 java_lang_reflect_Constructor::set_type_annotations(ch(), an_oop); |
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|
823 } |
| 0 | 824 return ch(); |
| 825 } | |
| 826 | |
| 827 | |
| 828 oop Reflection::new_field(fieldDescriptor* fd, bool intern_name, TRAPS) { | |
|
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829 Symbol* field_name = fd->name(); |
| 0 | 830 Handle name; |
| 831 if (intern_name) { | |
| 832 // intern_name is only true with UseNewReflection | |
|
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833 oop name_oop = StringTable::intern(field_name, CHECK_NULL); |
| 0 | 834 name = Handle(THREAD, name_oop); |
| 835 } else { | |
| 836 name = java_lang_String::create_from_symbol(field_name, CHECK_NULL); | |
| 837 } | |
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838 Symbol* signature = fd->signature(); |
|
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839 instanceKlassHandle holder (THREAD, fd->field_holder()); |
| 0 | 840 Handle type = new_type(signature, holder, CHECK_NULL); |
| 841 Handle rh = java_lang_reflect_Field::create(CHECK_NULL); | |
| 842 | |
|
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843 java_lang_reflect_Field::set_clazz(rh(), fd->field_holder()->java_mirror()); |
| 0 | 844 java_lang_reflect_Field::set_slot(rh(), fd->index()); |
| 845 java_lang_reflect_Field::set_name(rh(), name()); | |
| 846 java_lang_reflect_Field::set_type(rh(), type()); | |
| 847 // Note the ACC_ANNOTATION bit, which is a per-class access flag, is never set here. | |
| 848 java_lang_reflect_Field::set_modifiers(rh(), fd->access_flags().as_int() & JVM_RECOGNIZED_FIELD_MODIFIERS); | |
| 849 java_lang_reflect_Field::set_override(rh(), false); | |
| 850 if (java_lang_reflect_Field::has_signature_field() && | |
|
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851 fd->has_generic_signature()) { |
|
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852 Symbol* gs = fd->generic_signature(); |
| 0 | 853 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); |
| 854 java_lang_reflect_Field::set_signature(rh(), sig()); | |
| 855 } | |
| 856 if (java_lang_reflect_Field::has_annotations_field()) { | |
|
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857 typeArrayOop an_oop = Annotations::make_java_array(fd->annotations(), CHECK_NULL); |
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858 java_lang_reflect_Field::set_annotations(rh(), an_oop); |
| 0 | 859 } |
|
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860 if (java_lang_reflect_Field::has_type_annotations_field()) { |
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861 typeArrayOop an_oop = Annotations::make_java_array(fd->type_annotations(), CHECK_NULL); |
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862 java_lang_reflect_Field::set_type_annotations(rh(), an_oop); |
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863 } |
| 0 | 864 return rh(); |
| 865 } | |
| 866 | |
|
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867 oop Reflection::new_parameter(Handle method, int index, Symbol* sym, |
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868 int flags, TRAPS) { |
|
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869 Handle name; |
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870 |
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871 // A null symbol here translates to the empty string |
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872 if(NULL != sym) { |
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873 name = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
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874 } else { |
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875 name = java_lang_String::create_from_str("", CHECK_NULL); |
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876 } |
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877 |
|
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878 Handle rh = java_lang_reflect_Parameter::create(CHECK_NULL); |
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879 java_lang_reflect_Parameter::set_name(rh(), name()); |
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880 java_lang_reflect_Parameter::set_modifiers(rh(), flags); |
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881 java_lang_reflect_Parameter::set_executable(rh(), method()); |
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882 java_lang_reflect_Parameter::set_index(rh(), index); |
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883 return rh(); |
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884 } |
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885 |
| 0 | 886 |
| 887 methodHandle Reflection::resolve_interface_call(instanceKlassHandle klass, methodHandle method, | |
| 888 KlassHandle recv_klass, Handle receiver, TRAPS) { | |
| 889 assert(!method.is_null() , "method should not be null"); | |
| 890 | |
| 891 CallInfo info; | |
|
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892 Symbol* signature = method->signature(); |
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|
893 Symbol* name = method->name(); |
| 0 | 894 LinkResolver::resolve_interface_call(info, receiver, recv_klass, klass, |
| 895 name, signature, | |
| 896 KlassHandle(), false, true, | |
| 897 CHECK_(methodHandle())); | |
| 898 return info.selected_method(); | |
| 899 } | |
| 900 | |
| 901 | |
| 902 oop Reflection::invoke(instanceKlassHandle klass, methodHandle reflected_method, | |
| 903 Handle receiver, bool override, objArrayHandle ptypes, | |
| 904 BasicType rtype, objArrayHandle args, bool is_method_invoke, TRAPS) { | |
| 905 ResourceMark rm(THREAD); | |
| 906 | |
| 907 methodHandle method; // actual method to invoke | |
| 908 KlassHandle target_klass; // target klass, receiver's klass for non-static | |
| 909 | |
| 910 // Ensure klass is initialized | |
| 911 klass->initialize(CHECK_NULL); | |
| 912 | |
| 913 bool is_static = reflected_method->is_static(); | |
| 914 if (is_static) { | |
| 915 // ignore receiver argument | |
| 916 method = reflected_method; | |
| 917 target_klass = klass; | |
| 918 } else { | |
| 919 // check for null receiver | |
| 920 if (receiver.is_null()) { | |
| 921 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 922 } | |
| 923 // Check class of receiver against class declaring method | |
| 924 if (!receiver->is_a(klass())) { | |
| 925 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "object is not an instance of declaring class"); | |
| 926 } | |
| 927 // target klass is receiver's klass | |
| 928 target_klass = KlassHandle(THREAD, receiver->klass()); | |
| 929 // no need to resolve if method is private or <init> | |
| 930 if (reflected_method->is_private() || reflected_method->name() == vmSymbols::object_initializer_name()) { | |
| 931 method = reflected_method; | |
| 932 } else { | |
| 933 // resolve based on the receiver | |
|
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934 if (reflected_method->method_holder()->is_interface()) { |
| 0 | 935 // resolve interface call |
| 936 if (ReflectionWrapResolutionErrors) { | |
| 937 // new default: 6531596 | |
| 938 // Match resolution errors with those thrown due to reflection inlining | |
| 939 // Linktime resolution & IllegalAccessCheck already done by Class.getMethod() | |
| 940 method = resolve_interface_call(klass, reflected_method, target_klass, receiver, THREAD); | |
| 941 if (HAS_PENDING_EXCEPTION) { | |
| 942 // Method resolution threw an exception; wrap it in an InvocationTargetException | |
| 943 oop resolution_exception = PENDING_EXCEPTION; | |
| 944 CLEAR_PENDING_EXCEPTION; | |
| 945 JavaCallArguments args(Handle(THREAD, resolution_exception)); | |
|
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946 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(), |
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947 vmSymbols::throwable_void_signature(), |
| 0 | 948 &args); |
| 949 } | |
| 950 } else { | |
| 951 method = resolve_interface_call(klass, reflected_method, target_klass, receiver, CHECK_(NULL)); | |
| 952 } | |
| 953 } else { | |
| 954 // if the method can be overridden, we resolve using the vtable index. | |
|
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955 assert(!reflected_method->has_itable_index(), ""); |
|
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956 int index = reflected_method->vtable_index(); |
| 0 | 957 method = reflected_method; |
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958 if (index != Method::nonvirtual_vtable_index) { |
| 0 | 959 // target_klass might be an arrayKlassOop but all vtables start at |
| 960 // the same place. The cast is to avoid virtual call and assertion. | |
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961 InstanceKlass* inst = (InstanceKlass*)target_klass(); |
| 0 | 962 method = methodHandle(THREAD, inst->method_at_vtable(index)); |
| 963 } | |
| 964 if (!method.is_null()) { | |
| 965 // Check for abstract methods as well | |
| 966 if (method->is_abstract()) { | |
| 967 // new default: 6531596 | |
| 968 if (ReflectionWrapResolutionErrors) { | |
| 969 ResourceMark rm(THREAD); | |
| 970 Handle h_origexception = Exceptions::new_exception(THREAD, | |
| 971 vmSymbols::java_lang_AbstractMethodError(), | |
| 6983 | 972 Method::name_and_sig_as_C_string(target_klass(), |
| 0 | 973 method->name(), |
| 974 method->signature())); | |
| 975 JavaCallArguments args(h_origexception); | |
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976 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(), |
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977 vmSymbols::throwable_void_signature(), |
| 0 | 978 &args); |
| 979 } else { | |
| 980 ResourceMark rm(THREAD); | |
| 981 THROW_MSG_0(vmSymbols::java_lang_AbstractMethodError(), | |
| 6983 | 982 Method::name_and_sig_as_C_string(target_klass(), |
| 0 | 983 method->name(), |
| 984 method->signature())); | |
| 985 } | |
| 986 } | |
| 987 } | |
| 988 } | |
| 989 } | |
| 990 } | |
| 991 | |
| 992 // I believe this is a ShouldNotGetHere case which requires | |
| 993 // an internal vtable bug. If you ever get this please let Karen know. | |
| 994 if (method.is_null()) { | |
| 995 ResourceMark rm(THREAD); | |
| 996 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
| 6983 | 997 Method::name_and_sig_as_C_string(klass(), |
| 0 | 998 reflected_method->name(), |
| 999 reflected_method->signature())); | |
| 1000 } | |
| 1001 | |
| 1002 // In the JDK 1.4 reflection implementation, the security check is | |
| 1003 // done at the Java level | |
| 1004 if (!(JDK_Version::is_gte_jdk14x_version() && UseNewReflection)) { | |
| 1005 | |
| 1006 // Access checking (unless overridden by Method) | |
| 1007 if (!override) { | |
| 1008 if (!(klass->is_public() && reflected_method->is_public())) { | |
| 1009 bool access = Reflection::reflect_check_access(klass(), reflected_method->access_flags(), target_klass(), is_method_invoke, CHECK_NULL); | |
| 1010 if (!access) { | |
| 1011 return NULL; // exception | |
| 1012 } | |
| 1013 } | |
| 1014 } | |
| 1015 | |
| 1016 } // !(Universe::is_gte_jdk14x_version() && UseNewReflection) | |
| 1017 | |
| 1018 assert(ptypes->is_objArray(), "just checking"); | |
| 1019 int args_len = args.is_null() ? 0 : args->length(); | |
| 1020 // Check number of arguments | |
| 1021 if (ptypes->length() != args_len) { | |
| 1022 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "wrong number of arguments"); | |
| 1023 } | |
| 1024 | |
| 1025 // Create object to contain parameters for the JavaCall | |
| 1026 JavaCallArguments java_args(method->size_of_parameters()); | |
| 1027 | |
| 1028 if (!is_static) { | |
| 1029 java_args.push_oop(receiver); | |
| 1030 } | |
| 1031 | |
| 1032 for (int i = 0; i < args_len; i++) { | |
| 1033 oop type_mirror = ptypes->obj_at(i); | |
| 1034 oop arg = args->obj_at(i); | |
| 1035 if (java_lang_Class::is_primitive(type_mirror)) { | |
| 1036 jvalue value; | |
| 1037 BasicType ptype = basic_type_mirror_to_basic_type(type_mirror, CHECK_NULL); | |
| 1038 BasicType atype = unbox_for_primitive(arg, &value, CHECK_NULL); | |
| 1039 if (ptype != atype) { | |
| 1040 widen(&value, atype, ptype, CHECK_NULL); | |
| 1041 } | |
| 1042 switch (ptype) { | |
| 1043 case T_BOOLEAN: java_args.push_int(value.z); break; | |
| 1044 case T_CHAR: java_args.push_int(value.c); break; | |
| 1045 case T_BYTE: java_args.push_int(value.b); break; | |
| 1046 case T_SHORT: java_args.push_int(value.s); break; | |
| 1047 case T_INT: java_args.push_int(value.i); break; | |
| 1048 case T_LONG: java_args.push_long(value.j); break; | |
| 1049 case T_FLOAT: java_args.push_float(value.f); break; | |
| 1050 case T_DOUBLE: java_args.push_double(value.d); break; | |
| 1051 default: | |
| 1052 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
| 1053 } | |
| 1054 } else { | |
| 1055 if (arg != NULL) { | |
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1056 Klass* k = java_lang_Class::as_Klass(type_mirror); |
| 0 | 1057 if (!arg->is_a(k)) { |
| 1058 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
| 1059 } | |
| 1060 } | |
| 1061 Handle arg_handle(THREAD, arg); // Create handle for argument | |
| 1062 java_args.push_oop(arg_handle); // Push handle | |
| 1063 } | |
| 1064 } | |
| 1065 | |
| 1066 assert(java_args.size_of_parameters() == method->size_of_parameters(), "just checking"); | |
| 1067 | |
| 1068 // All oops (including receiver) is passed in as Handles. An potential oop is returned as an | |
| 1069 // oop (i.e., NOT as an handle) | |
| 1070 JavaValue result(rtype); | |
| 1071 JavaCalls::call(&result, method, &java_args, THREAD); | |
| 1072 | |
| 1073 if (HAS_PENDING_EXCEPTION) { | |
| 1074 // Method threw an exception; wrap it in an InvocationTargetException | |
| 1075 oop target_exception = PENDING_EXCEPTION; | |
| 1076 CLEAR_PENDING_EXCEPTION; | |
| 1077 JavaCallArguments args(Handle(THREAD, target_exception)); | |
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1078 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(), |
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1079 vmSymbols::throwable_void_signature(), |
| 0 | 1080 &args); |
| 1081 } else { | |
| 1082 if (rtype == T_BOOLEAN || rtype == T_BYTE || rtype == T_CHAR || rtype == T_SHORT) | |
| 1083 narrow((jvalue*) result.get_value_addr(), rtype, CHECK_NULL); | |
| 1084 return box((jvalue*) result.get_value_addr(), rtype, CHECK_NULL); | |
| 1085 } | |
| 1086 } | |
| 1087 | |
| 1088 | |
| 1089 void Reflection::narrow(jvalue* value, BasicType narrow_type, TRAPS) { | |
| 1090 switch (narrow_type) { | |
| 1091 case T_BOOLEAN: | |
| 1092 value->z = (jboolean) value->i; | |
| 1093 return; | |
| 1094 case T_BYTE: | |
| 1095 value->b = (jbyte) value->i; | |
| 1096 return; | |
| 1097 case T_CHAR: | |
| 1098 value->c = (jchar) value->i; | |
| 1099 return; | |
| 1100 case T_SHORT: | |
| 1101 value->s = (jshort) value->i; | |
| 1102 return; | |
| 1103 default: | |
| 1104 break; // fail | |
| 1105 } | |
| 1106 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
| 1107 } | |
| 1108 | |
| 1109 | |
| 1110 BasicType Reflection::basic_type_mirror_to_basic_type(oop basic_type_mirror, TRAPS) { | |
| 1111 assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking"); | |
| 1112 return java_lang_Class::primitive_type(basic_type_mirror); | |
| 1113 } | |
| 1114 | |
| 1115 // This would be nicer if, say, java.lang.reflect.Method was a subclass | |
| 1116 // of java.lang.reflect.Constructor | |
| 1117 | |
| 1118 oop Reflection::invoke_method(oop method_mirror, Handle receiver, objArrayHandle args, TRAPS) { | |
| 1119 oop mirror = java_lang_reflect_Method::clazz(method_mirror); | |
| 1120 int slot = java_lang_reflect_Method::slot(method_mirror); | |
| 1121 bool override = java_lang_reflect_Method::override(method_mirror) != 0; | |
| 1122 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Method::parameter_types(method_mirror))); | |
| 1123 | |
| 1124 oop return_type_mirror = java_lang_reflect_Method::return_type(method_mirror); | |
| 1125 BasicType rtype; | |
| 1126 if (java_lang_Class::is_primitive(return_type_mirror)) { | |
| 1127 rtype = basic_type_mirror_to_basic_type(return_type_mirror, CHECK_NULL); | |
| 1128 } else { | |
| 1129 rtype = T_OBJECT; | |
| 1130 } | |
| 1131 | |
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1132 instanceKlassHandle klass(THREAD, java_lang_Class::as_Klass(mirror)); |
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1133 Method* m = klass->method_with_idnum(slot); |
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1134 if (m == NULL) { |
| 0 | 1135 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke"); |
| 1136 } | |
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1137 methodHandle method(THREAD, m); |
| 0 | 1138 |
| 1139 return invoke(klass, method, receiver, override, ptypes, rtype, args, true, THREAD); | |
| 1140 } | |
| 1141 | |
| 1142 | |
| 1143 oop Reflection::invoke_constructor(oop constructor_mirror, objArrayHandle args, TRAPS) { | |
| 1144 oop mirror = java_lang_reflect_Constructor::clazz(constructor_mirror); | |
| 1145 int slot = java_lang_reflect_Constructor::slot(constructor_mirror); | |
| 1146 bool override = java_lang_reflect_Constructor::override(constructor_mirror) != 0; | |
| 1147 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Constructor::parameter_types(constructor_mirror))); | |
| 1148 | |
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1149 instanceKlassHandle klass(THREAD, java_lang_Class::as_Klass(mirror)); |
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1150 Method* m = klass->method_with_idnum(slot); |
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1151 if (m == NULL) { |
| 0 | 1152 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke"); |
| 1153 } | |
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1154 methodHandle method(THREAD, m); |
| 0 | 1155 assert(method->name() == vmSymbols::object_initializer_name(), "invalid constructor"); |
| 1156 | |
| 1157 // Make sure klass gets initialize | |
| 1158 klass->initialize(CHECK_NULL); | |
| 1159 | |
| 1160 // Create new instance (the receiver) | |
| 1161 klass->check_valid_for_instantiation(false, CHECK_NULL); | |
| 1162 Handle receiver = klass->allocate_instance_handle(CHECK_NULL); | |
| 1163 | |
| 1164 // Ignore result from call and return receiver | |
| 1165 invoke(klass, method, receiver, override, ptypes, T_VOID, args, false, CHECK_NULL); | |
| 1166 return receiver(); | |
| 1167 } |