Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/reflection.cpp @ 6266:1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
6984705: JSR 292 method handle creation should not go through JNI
Summary: remove assembly code for JDK 7 chained method handles
Reviewed-by: jrose, twisti, kvn, mhaupt
Contributed-by: John Rose <john.r.rose@oracle.com>, Christian Thalinger <christian.thalinger@oracle.com>, Michael Haupt <michael.haupt@oracle.com>
| author | twisti |
|---|---|
| date | Tue, 24 Jul 2012 10:51:00 -0700 |
| parents | 634b8615a6ba |
| children | da91efe96a93 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
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2 * Copyright (c) 1997, 2011, 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 |
| 47 #define JAVA_1_5_VERSION 49 | |
| 48 | |
| 49 static void trace_class_resolution(klassOop to_class) { | |
| 50 ResourceMark rm; | |
| 51 int line_number = -1; | |
| 52 const char * source_file = NULL; | |
| 53 klassOop caller = NULL; | |
| 54 JavaThread* jthread = JavaThread::current(); | |
| 55 if (jthread->has_last_Java_frame()) { | |
| 56 vframeStream vfst(jthread); | |
| 57 // skip over any frames belonging to java.lang.Class | |
| 58 while (!vfst.at_end() && | |
| 59 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class()) { | |
| 60 vfst.next(); | |
| 61 } | |
| 62 if (!vfst.at_end()) { | |
| 63 // this frame is a likely suspect | |
| 64 caller = vfst.method()->method_holder(); | |
| 65 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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66 Symbol* s = instanceKlass::cast(vfst.method()->method_holder())->source_file_name(); |
| 0 | 67 if (s != NULL) { |
| 68 source_file = s->as_C_string(); | |
| 69 } | |
| 70 } | |
| 71 } | |
| 72 if (caller != NULL) { | |
| 73 const char * from = Klass::cast(caller)->external_name(); | |
| 74 const char * to = Klass::cast(to_class)->external_name(); | |
| 75 // print in a single call to reduce interleaving between threads | |
| 76 if (source_file != NULL) { | |
| 77 tty->print("RESOLVE %s %s %s:%d (reflection)\n", from, to, source_file, line_number); | |
| 78 } else { | |
| 79 tty->print("RESOLVE %s %s (reflection)\n", from, to); | |
| 80 } | |
| 81 } | |
| 82 } | |
| 83 | |
| 84 | |
| 85 oop Reflection::box(jvalue* value, BasicType type, TRAPS) { | |
| 86 if (type == T_VOID) { | |
| 87 return NULL; | |
| 88 } | |
| 89 if (type == T_OBJECT || type == T_ARRAY) { | |
| 90 // regular objects are not boxed | |
| 91 return (oop) value->l; | |
| 92 } | |
| 93 oop result = java_lang_boxing_object::create(type, value, CHECK_NULL); | |
| 94 if (result == NULL) { | |
| 95 THROW_(vmSymbols::java_lang_IllegalArgumentException(), result); | |
| 96 } | |
| 97 return result; | |
| 98 } | |
| 99 | |
| 100 | |
| 101 BasicType Reflection::unbox_for_primitive(oop box, jvalue* value, TRAPS) { | |
| 102 if (box == NULL) { | |
| 103 THROW_(vmSymbols::java_lang_IllegalArgumentException(), T_ILLEGAL); | |
| 104 } | |
| 105 return java_lang_boxing_object::get_value(box, value); | |
| 106 } | |
| 107 | |
| 108 BasicType Reflection::unbox_for_regular_object(oop box, jvalue* value) { | |
| 109 // Note: box is really the unboxed oop. It might even be a Short, etc.! | |
| 110 value->l = (jobject) box; | |
| 111 return T_OBJECT; | |
| 112 } | |
| 113 | |
| 114 | |
| 115 void Reflection::widen(jvalue* value, BasicType current_type, BasicType wide_type, TRAPS) { | |
| 116 assert(wide_type != current_type, "widen should not be called with identical types"); | |
| 117 switch (wide_type) { | |
| 118 case T_BOOLEAN: | |
| 119 case T_BYTE: | |
| 120 case T_CHAR: | |
| 121 break; // fail | |
| 122 case T_SHORT: | |
| 123 switch (current_type) { | |
| 124 case T_BYTE: | |
| 125 value->s = (jshort) value->b; | |
| 126 return; | |
| 127 } | |
| 128 break; // fail | |
| 129 case T_INT: | |
| 130 switch (current_type) { | |
| 131 case T_BYTE: | |
| 132 value->i = (jint) value->b; | |
| 133 return; | |
| 134 case T_CHAR: | |
| 135 value->i = (jint) value->c; | |
| 136 return; | |
| 137 case T_SHORT: | |
| 138 value->i = (jint) value->s; | |
| 139 return; | |
| 140 } | |
| 141 break; // fail | |
| 142 case T_LONG: | |
| 143 switch (current_type) { | |
| 144 case T_BYTE: | |
| 145 value->j = (jlong) value->b; | |
| 146 return; | |
| 147 case T_CHAR: | |
| 148 value->j = (jlong) value->c; | |
| 149 return; | |
| 150 case T_SHORT: | |
| 151 value->j = (jlong) value->s; | |
| 152 return; | |
| 153 case T_INT: | |
| 154 value->j = (jlong) value->i; | |
| 155 return; | |
| 156 } | |
| 157 break; // fail | |
| 158 case T_FLOAT: | |
| 159 switch (current_type) { | |
| 160 case T_BYTE: | |
| 161 value->f = (jfloat) value->b; | |
| 162 return; | |
| 163 case T_CHAR: | |
| 164 value->f = (jfloat) value->c; | |
| 165 return; | |
| 166 case T_SHORT: | |
| 167 value->f = (jfloat) value->s; | |
| 168 return; | |
| 169 case T_INT: | |
| 170 value->f = (jfloat) value->i; | |
| 171 return; | |
| 172 case T_LONG: | |
| 173 value->f = (jfloat) value->j; | |
| 174 return; | |
| 175 } | |
| 176 break; // fail | |
| 177 case T_DOUBLE: | |
| 178 switch (current_type) { | |
| 179 case T_BYTE: | |
| 180 value->d = (jdouble) value->b; | |
| 181 return; | |
| 182 case T_CHAR: | |
| 183 value->d = (jdouble) value->c; | |
| 184 return; | |
| 185 case T_SHORT: | |
| 186 value->d = (jdouble) value->s; | |
| 187 return; | |
| 188 case T_INT: | |
| 189 value->d = (jdouble) value->i; | |
| 190 return; | |
| 191 case T_FLOAT: | |
| 192 value->d = (jdouble) value->f; | |
| 193 return; | |
| 194 case T_LONG: | |
| 195 value->d = (jdouble) value->j; | |
| 196 return; | |
| 197 } | |
| 198 break; // fail | |
| 199 default: | |
| 200 break; // fail | |
| 201 } | |
| 202 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
| 203 } | |
| 204 | |
| 205 | |
| 206 BasicType Reflection::array_get(jvalue* value, arrayOop a, int index, TRAPS) { | |
| 207 if (!a->is_within_bounds(index)) { | |
| 208 THROW_(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), T_ILLEGAL); | |
| 209 } | |
| 210 if (a->is_objArray()) { | |
| 211 value->l = (jobject) objArrayOop(a)->obj_at(index); | |
| 212 return T_OBJECT; | |
| 213 } else { | |
| 214 assert(a->is_typeArray(), "just checking"); | |
| 215 BasicType type = typeArrayKlass::cast(a->klass())->element_type(); | |
| 216 switch (type) { | |
| 217 case T_BOOLEAN: | |
| 218 value->z = typeArrayOop(a)->bool_at(index); | |
| 219 break; | |
| 220 case T_CHAR: | |
| 221 value->c = typeArrayOop(a)->char_at(index); | |
| 222 break; | |
| 223 case T_FLOAT: | |
| 224 value->f = typeArrayOop(a)->float_at(index); | |
| 225 break; | |
| 226 case T_DOUBLE: | |
| 227 value->d = typeArrayOop(a)->double_at(index); | |
| 228 break; | |
| 229 case T_BYTE: | |
| 230 value->b = typeArrayOop(a)->byte_at(index); | |
| 231 break; | |
| 232 case T_SHORT: | |
| 233 value->s = typeArrayOop(a)->short_at(index); | |
| 234 break; | |
| 235 case T_INT: | |
| 236 value->i = typeArrayOop(a)->int_at(index); | |
| 237 break; | |
| 238 case T_LONG: | |
| 239 value->j = typeArrayOop(a)->long_at(index); | |
| 240 break; | |
| 241 default: | |
| 242 return T_ILLEGAL; | |
| 243 } | |
| 244 return type; | |
| 245 } | |
| 246 } | |
| 247 | |
| 248 | |
| 249 void Reflection::array_set(jvalue* value, arrayOop a, int index, BasicType value_type, TRAPS) { | |
| 250 if (!a->is_within_bounds(index)) { | |
| 251 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 252 } | |
| 253 if (a->is_objArray()) { | |
| 254 if (value_type == T_OBJECT) { | |
| 255 oop obj = (oop) value->l; | |
| 256 if (obj != NULL) { | |
| 257 klassOop element_klass = objArrayKlass::cast(a->klass())->element_klass(); | |
| 258 if (!obj->is_a(element_klass)) { | |
| 259 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "array element type mismatch"); | |
| 260 } | |
| 261 } | |
| 262 objArrayOop(a)->obj_at_put(index, obj); | |
| 263 } | |
| 264 } else { | |
| 265 assert(a->is_typeArray(), "just checking"); | |
| 266 BasicType array_type = typeArrayKlass::cast(a->klass())->element_type(); | |
| 267 if (array_type != value_type) { | |
| 268 // The widen operation can potentially throw an exception, but cannot block, | |
| 269 // so typeArrayOop a is safe if the call succeeds. | |
| 270 widen(value, value_type, array_type, CHECK); | |
| 271 } | |
| 272 switch (array_type) { | |
| 273 case T_BOOLEAN: | |
| 274 typeArrayOop(a)->bool_at_put(index, value->z); | |
| 275 break; | |
| 276 case T_CHAR: | |
| 277 typeArrayOop(a)->char_at_put(index, value->c); | |
| 278 break; | |
| 279 case T_FLOAT: | |
| 280 typeArrayOop(a)->float_at_put(index, value->f); | |
| 281 break; | |
| 282 case T_DOUBLE: | |
| 283 typeArrayOop(a)->double_at_put(index, value->d); | |
| 284 break; | |
| 285 case T_BYTE: | |
| 286 typeArrayOop(a)->byte_at_put(index, value->b); | |
| 287 break; | |
| 288 case T_SHORT: | |
| 289 typeArrayOop(a)->short_at_put(index, value->s); | |
| 290 break; | |
| 291 case T_INT: | |
| 292 typeArrayOop(a)->int_at_put(index, value->i); | |
| 293 break; | |
| 294 case T_LONG: | |
| 295 typeArrayOop(a)->long_at_put(index, value->j); | |
| 296 break; | |
| 297 default: | |
| 298 THROW(vmSymbols::java_lang_IllegalArgumentException()); | |
| 299 } | |
| 300 } | |
| 301 } | |
| 302 | |
| 303 | |
| 304 klassOop Reflection::basic_type_mirror_to_arrayklass(oop basic_type_mirror, TRAPS) { | |
| 305 assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking"); | |
| 306 BasicType type = java_lang_Class::primitive_type(basic_type_mirror); | |
| 307 if (type == T_VOID) { | |
| 308 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
| 309 } else { | |
| 310 return Universe::typeArrayKlassObj(type); | |
| 311 } | |
| 312 } | |
| 313 | |
| 314 | |
| 315 oop Reflection:: basic_type_arrayklass_to_mirror(klassOop basic_type_arrayklass, TRAPS) { | |
| 316 BasicType type = typeArrayKlass::cast(basic_type_arrayklass)->element_type(); | |
| 317 return Universe::java_mirror(type); | |
| 318 } | |
| 319 | |
| 320 | |
| 321 arrayOop Reflection::reflect_new_array(oop element_mirror, jint length, TRAPS) { | |
| 322 if (element_mirror == NULL) { | |
| 323 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 324 } | |
| 325 if (length < 0) { | |
| 326 THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); | |
| 327 } | |
| 328 if (java_lang_Class::is_primitive(element_mirror)) { | |
| 329 klassOop tak = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL); | |
| 330 return typeArrayKlass::cast(tak)->allocate(length, THREAD); | |
| 331 } else { | |
| 332 klassOop k = java_lang_Class::as_klassOop(element_mirror); | |
| 333 if (Klass::cast(k)->oop_is_array() && arrayKlass::cast(k)->dimension() >= MAX_DIM) { | |
| 334 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
| 335 } | |
| 336 return oopFactory::new_objArray(k, length, THREAD); | |
| 337 } | |
| 338 } | |
| 339 | |
| 340 | |
| 341 arrayOop Reflection::reflect_new_multi_array(oop element_mirror, typeArrayOop dim_array, TRAPS) { | |
| 342 assert(dim_array->is_typeArray(), "just checking"); | |
| 343 assert(typeArrayKlass::cast(dim_array->klass())->element_type() == T_INT, "just checking"); | |
| 344 | |
| 345 if (element_mirror == NULL) { | |
| 346 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 347 } | |
| 348 | |
| 349 int len = dim_array->length(); | |
| 350 if (len <= 0 || len > MAX_DIM) { | |
| 351 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
| 352 } | |
| 353 | |
| 354 jint dimensions[MAX_DIM]; // C array copy of intArrayOop | |
| 355 for (int i = 0; i < len; i++) { | |
| 356 int d = dim_array->int_at(i); | |
| 357 if (d < 0) { | |
| 358 THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); | |
| 359 } | |
| 360 dimensions[i] = d; | |
| 361 } | |
| 362 | |
| 363 klassOop klass; | |
| 364 int dim = len; | |
| 365 if (java_lang_Class::is_primitive(element_mirror)) { | |
| 366 klass = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL); | |
| 367 } else { | |
| 368 klass = java_lang_Class::as_klassOop(element_mirror); | |
| 369 if (Klass::cast(klass)->oop_is_array()) { | |
| 370 int k_dim = arrayKlass::cast(klass)->dimension(); | |
| 371 if (k_dim + len > MAX_DIM) { | |
| 372 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
| 373 } | |
| 374 dim += k_dim; | |
| 375 } | |
| 376 } | |
| 377 klass = Klass::cast(klass)->array_klass(dim, CHECK_NULL); | |
| 378 oop obj = arrayKlass::cast(klass)->multi_allocate(len, dimensions, THREAD); | |
| 379 assert(obj->is_array(), "just checking"); | |
| 380 return arrayOop(obj); | |
| 381 } | |
| 382 | |
| 383 | |
| 384 oop Reflection::array_component_type(oop mirror, TRAPS) { | |
| 385 if (java_lang_Class::is_primitive(mirror)) { | |
| 386 return NULL; | |
| 387 } | |
| 388 | |
| 389 klassOop klass = java_lang_Class::as_klassOop(mirror); | |
| 390 if (!Klass::cast(klass)->oop_is_array()) { | |
| 391 return NULL; | |
| 392 } | |
| 393 | |
| 394 oop result = arrayKlass::cast(klass)->component_mirror(); | |
| 395 #ifdef ASSERT | |
| 396 oop result2 = NULL; | |
| 397 if (arrayKlass::cast(klass)->dimension() == 1) { | |
| 398 if (Klass::cast(klass)->oop_is_typeArray()) { | |
| 399 result2 = basic_type_arrayklass_to_mirror(klass, CHECK_NULL); | |
| 400 } else { | |
| 401 result2 = Klass::cast(objArrayKlass::cast(klass)->element_klass())->java_mirror(); | |
| 402 } | |
| 403 } else { | |
| 404 klassOop lower_dim = arrayKlass::cast(klass)->lower_dimension(); | |
| 405 assert(Klass::cast(lower_dim)->oop_is_array(), "just checking"); | |
| 406 result2 = Klass::cast(lower_dim)->java_mirror(); | |
| 407 } | |
| 408 assert(result == result2, "results must be consistent"); | |
| 409 #endif //ASSERT | |
| 410 return result; | |
| 411 } | |
| 412 | |
| 413 | |
| 414 bool Reflection::reflect_check_access(klassOop field_class, AccessFlags acc, klassOop target_class, bool is_method_invoke, TRAPS) { | |
| 415 // field_class : declaring class | |
| 416 // acc : declared field access | |
| 417 // target_class : for protected | |
| 418 | |
| 419 // Check if field or method is accessible to client. Throw an | |
| 420 // IllegalAccessException and return false if not. | |
| 421 | |
| 422 // The "client" is the class associated with the nearest real frame | |
| 423 // getCallerClass already skips Method.invoke frames, so pass 0 in | |
| 424 // that case (same as classic). | |
| 425 ResourceMark rm(THREAD); | |
| 426 assert(THREAD->is_Java_thread(), "sanity check"); | |
| 427 klassOop client_class = ((JavaThread *)THREAD)->security_get_caller_class(is_method_invoke ? 0 : 1); | |
| 428 | |
| 429 if (client_class != field_class) { | |
| 430 if (!verify_class_access(client_class, field_class, false) | |
| 431 || !verify_field_access(client_class, | |
| 432 field_class, | |
| 433 field_class, | |
| 434 acc, | |
| 435 false)) { | |
| 436 THROW_(vmSymbols::java_lang_IllegalAccessException(), false); | |
| 437 } | |
| 438 } | |
| 439 | |
| 440 // Additional test for protected members: JLS 6.6.2 | |
| 441 | |
| 442 if (acc.is_protected()) { | |
| 443 if (target_class != client_class) { | |
| 444 if (!is_same_class_package(client_class, field_class)) { | |
| 445 if (!Klass::cast(target_class)->is_subclass_of(client_class)) { | |
| 446 THROW_(vmSymbols::java_lang_IllegalAccessException(), false); | |
| 447 } | |
| 448 } | |
| 449 } | |
| 450 } | |
| 451 | |
| 452 // Passed all tests | |
| 453 return true; | |
| 454 } | |
| 455 | |
| 456 | |
| 457 bool Reflection::verify_class_access(klassOop current_class, klassOop new_class, bool classloader_only) { | |
| 458 // Verify that current_class can access new_class. If the classloader_only | |
| 459 // flag is set, we automatically allow any accesses in which current_class | |
| 460 // doesn't have a classloader. | |
| 461 if ((current_class == NULL) || | |
| 462 (current_class == new_class) || | |
| 463 (instanceKlass::cast(new_class)->is_public()) || | |
| 464 is_same_class_package(current_class, new_class)) { | |
| 465 return true; | |
| 466 } | |
| 467 // New (1.4) reflection implementation. Allow all accesses from | |
| 468 // sun/reflect/MagicAccessorImpl subclasses to succeed trivially. | |
| 469 if ( JDK_Version::is_gte_jdk14x_version() | |
| 470 && UseNewReflection | |
| 1142 | 471 && Klass::cast(current_class)->is_subclass_of(SystemDictionary::reflect_MagicAccessorImpl_klass())) { |
| 0 | 472 return true; |
| 473 } | |
| 474 | |
| 475 return can_relax_access_check_for(current_class, new_class, classloader_only); | |
| 476 } | |
| 477 | |
|
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478 static bool under_host_klass(instanceKlass* ik, klassOop host_klass) { |
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479 DEBUG_ONLY(int inf_loop_check = 1000 * 1000 * 1000); |
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480 for (;;) { |
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481 klassOop hc = (klassOop) ik->host_klass(); |
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482 if (hc == NULL) return false; |
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483 if (hc == host_klass) return true; |
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484 ik = instanceKlass::cast(hc); |
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485 |
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486 // There's no way to make a host class loop short of patching memory. |
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487 // Therefore there cannot be a loop here unles there's another bug. |
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488 // Still, let's check for it. |
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489 assert(--inf_loop_check > 0, "no host_klass loop"); |
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490 } |
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491 } |
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492 |
| 0 | 493 bool Reflection::can_relax_access_check_for( |
| 494 klassOop accessor, klassOop accessee, bool classloader_only) { | |
| 495 instanceKlass* accessor_ik = instanceKlass::cast(accessor); | |
| 496 instanceKlass* accessee_ik = instanceKlass::cast(accessee); | |
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497 |
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498 // If either is on the other's host_klass chain, access is OK, |
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499 // because one is inside the other. |
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500 if (under_host_klass(accessor_ik, accessee) || |
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501 under_host_klass(accessee_ik, accessor)) |
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502 return true; |
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503 |
| 0 | 504 if (RelaxAccessControlCheck || |
| 505 (accessor_ik->major_version() < JAVA_1_5_VERSION && | |
| 506 accessee_ik->major_version() < JAVA_1_5_VERSION)) { | |
| 507 return classloader_only && | |
| 508 Verifier::relax_verify_for(accessor_ik->class_loader()) && | |
| 509 accessor_ik->protection_domain() == accessee_ik->protection_domain() && | |
| 510 accessor_ik->class_loader() == accessee_ik->class_loader(); | |
| 511 } else { | |
| 512 return false; | |
| 513 } | |
| 514 } | |
| 515 | |
| 516 bool Reflection::verify_field_access(klassOop current_class, | |
| 517 klassOop resolved_class, | |
| 518 klassOop field_class, | |
| 519 AccessFlags access, | |
| 520 bool classloader_only, | |
| 521 bool protected_restriction) { | |
| 522 // Verify that current_class can access a field of field_class, where that | |
| 523 // field's access bits are "access". We assume that we've already verified | |
| 524 // that current_class can access field_class. | |
| 525 // | |
| 526 // If the classloader_only flag is set, we automatically allow any accesses | |
| 527 // in which current_class doesn't have a classloader. | |
| 528 // | |
| 529 // "resolved_class" is the runtime type of "field_class". Sometimes we don't | |
| 530 // need this distinction (e.g. if all we have is the runtime type, or during | |
| 531 // class file parsing when we only care about the static type); in that case | |
| 532 // callers should ensure that resolved_class == field_class. | |
| 533 // | |
| 534 if ((current_class == NULL) || | |
| 535 (current_class == field_class) || | |
| 536 access.is_public()) { | |
| 537 return true; | |
| 538 } | |
| 539 | |
| 540 if (access.is_protected()) { | |
| 541 if (!protected_restriction) { | |
| 542 // See if current_class is a subclass of field_class | |
| 543 if (Klass::cast(current_class)->is_subclass_of(field_class)) { | |
| 115 | 544 if (access.is_static() || // static fields are ok, see 6622385 |
| 545 current_class == resolved_class || | |
| 0 | 546 field_class == resolved_class || |
| 547 Klass::cast(current_class)->is_subclass_of(resolved_class) || | |
| 548 Klass::cast(resolved_class)->is_subclass_of(current_class)) { | |
| 549 return true; | |
| 550 } | |
| 551 } | |
| 552 } | |
| 553 } | |
| 554 | |
| 555 if (!access.is_private() && is_same_class_package(current_class, field_class)) { | |
| 556 return true; | |
| 557 } | |
| 558 | |
| 559 // New (1.4) reflection implementation. Allow all accesses from | |
| 560 // sun/reflect/MagicAccessorImpl subclasses to succeed trivially. | |
| 561 if ( JDK_Version::is_gte_jdk14x_version() | |
| 562 && UseNewReflection | |
| 1142 | 563 && Klass::cast(current_class)->is_subclass_of(SystemDictionary::reflect_MagicAccessorImpl_klass())) { |
| 0 | 564 return true; |
| 565 } | |
| 566 | |
| 567 return can_relax_access_check_for( | |
| 568 current_class, field_class, classloader_only); | |
| 569 } | |
| 570 | |
| 571 | |
| 572 bool Reflection::is_same_class_package(klassOop class1, klassOop class2) { | |
| 573 return instanceKlass::cast(class1)->is_same_class_package(class2); | |
| 574 } | |
| 575 | |
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576 bool Reflection::is_same_package_member(klassOop class1, klassOop class2, TRAPS) { |
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577 return instanceKlass::cast(class1)->is_same_package_member(class2, THREAD); |
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578 } |
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579 |
| 0 | 580 |
| 581 // Checks that the 'outer' klass has declared 'inner' as being an inner klass. If not, | |
| 582 // throw an incompatible class change exception | |
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583 // If inner_is_member, require the inner to be a member of the outer. |
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584 // If !inner_is_member, require the inner to be anonymous (a non-member). |
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585 // Caller is responsible for figuring out in advance which case must be true. |
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586 void Reflection::check_for_inner_class(instanceKlassHandle outer, instanceKlassHandle inner, |
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587 bool inner_is_member, TRAPS) { |
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588 InnerClassesIterator iter(outer); |
| 0 | 589 constantPoolHandle cp (THREAD, outer->constants()); |
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590 for (; !iter.done(); iter.next()) { |
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591 int ioff = iter.inner_class_info_index(); |
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592 int ooff = iter.outer_class_info_index(); |
| 0 | 593 |
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594 if (inner_is_member && ioff != 0 && ooff != 0) { |
| 0 | 595 klassOop o = cp->klass_at(ooff, CHECK); |
| 596 if (o == outer()) { | |
| 597 klassOop i = cp->klass_at(ioff, CHECK); | |
| 598 if (i == inner()) { | |
| 599 return; | |
| 600 } | |
| 601 } | |
| 602 } | |
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603 if (!inner_is_member && ioff != 0 && ooff == 0 && |
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604 cp->klass_name_at_matches(inner, ioff)) { |
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605 klassOop i = cp->klass_at(ioff, CHECK); |
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606 if (i == inner()) { |
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607 return; |
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608 } |
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609 } |
| 0 | 610 } |
| 611 | |
| 612 // 'inner' not declared as an inner klass in outer | |
| 613 ResourceMark rm(THREAD); | |
| 614 Exceptions::fthrow( | |
| 615 THREAD_AND_LOCATION, | |
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616 vmSymbols::java_lang_IncompatibleClassChangeError(), |
| 0 | 617 "%s and %s disagree on InnerClasses attribute", |
| 618 outer->external_name(), | |
| 619 inner->external_name() | |
| 620 ); | |
| 621 } | |
| 622 | |
| 623 // Utility method converting a single SignatureStream element into java.lang.Class instance | |
| 624 | |
| 625 oop get_mirror_from_signature(methodHandle method, SignatureStream* ss, TRAPS) { | |
| 626 switch (ss->type()) { | |
| 627 default: | |
| 628 assert(ss->type() != T_VOID || ss->at_return_type(), "T_VOID should only appear as return type"); | |
| 629 return java_lang_Class::primitive_mirror(ss->type()); | |
| 630 case T_OBJECT: | |
| 631 case T_ARRAY: | |
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632 Symbol* name = ss->as_symbol(CHECK_NULL); |
| 0 | 633 oop loader = instanceKlass::cast(method->method_holder())->class_loader(); |
| 634 oop protection_domain = instanceKlass::cast(method->method_holder())->protection_domain(); | |
| 635 klassOop k = SystemDictionary::resolve_or_fail( | |
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636 name, |
| 0 | 637 Handle(THREAD, loader), |
| 638 Handle(THREAD, protection_domain), | |
| 639 true, CHECK_NULL); | |
| 640 if (TraceClassResolution) { | |
| 641 trace_class_resolution(k); | |
| 642 } | |
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643 return k->java_mirror(); |
| 0 | 644 }; |
| 645 } | |
| 646 | |
| 647 | |
| 648 objArrayHandle Reflection::get_parameter_types(methodHandle method, int parameter_count, oop* return_type, TRAPS) { | |
| 649 // Allocate array holding parameter types (java.lang.Class instances) | |
| 1142 | 650 objArrayOop m = oopFactory::new_objArray(SystemDictionary::Class_klass(), parameter_count, CHECK_(objArrayHandle())); |
| 0 | 651 objArrayHandle mirrors (THREAD, m); |
| 652 int index = 0; | |
| 653 // Collect parameter types | |
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654 ResourceMark rm(THREAD); |
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655 Symbol* signature = method->signature(); |
| 0 | 656 SignatureStream ss(signature); |
| 657 while (!ss.at_return_type()) { | |
| 658 oop mirror = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle())); | |
| 659 mirrors->obj_at_put(index++, mirror); | |
| 660 ss.next(); | |
| 661 } | |
| 662 assert(index == parameter_count, "invalid parameter count"); | |
| 663 if (return_type != NULL) { | |
| 664 // Collect return type as well | |
| 665 assert(ss.at_return_type(), "return type should be present"); | |
| 666 *return_type = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle())); | |
| 667 } | |
| 668 return mirrors; | |
| 669 } | |
| 670 | |
| 671 objArrayHandle Reflection::get_exception_types(methodHandle method, TRAPS) { | |
| 672 return method->resolved_checked_exceptions(CHECK_(objArrayHandle())); | |
| 673 } | |
| 674 | |
| 675 | |
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676 Handle Reflection::new_type(Symbol* signature, KlassHandle k, TRAPS) { |
| 0 | 677 // Basic types |
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678 BasicType type = vmSymbols::signature_type(signature); |
| 0 | 679 if (type != T_OBJECT) { |
| 680 return Handle(THREAD, Universe::java_mirror(type)); | |
| 681 } | |
| 682 | |
| 683 oop loader = instanceKlass::cast(k())->class_loader(); | |
| 684 oop protection_domain = Klass::cast(k())->protection_domain(); | |
| 685 klassOop result = SystemDictionary::resolve_or_fail(signature, | |
| 686 Handle(THREAD, loader), | |
| 687 Handle(THREAD, protection_domain), | |
| 688 true, CHECK_(Handle())); | |
| 689 | |
| 690 if (TraceClassResolution) { | |
| 691 trace_class_resolution(result); | |
| 692 } | |
| 693 | |
| 694 oop nt = Klass::cast(result)->java_mirror(); | |
| 695 return Handle(THREAD, nt); | |
| 696 } | |
| 697 | |
| 698 | |
| 699 oop Reflection::new_method(methodHandle method, bool intern_name, bool for_constant_pool_access, TRAPS) { | |
| 700 // In jdk1.2.x, getMethods on an interface erroneously includes <clinit>, thus the complicated assert. | |
| 701 // Also allow sun.reflect.ConstantPool to refer to <clinit> methods as java.lang.reflect.Methods. | |
| 702 assert(!method()->is_initializer() || | |
| 703 (for_constant_pool_access && method()->is_static()) || | |
| 704 (method()->name() == vmSymbols::class_initializer_name() | |
| 705 && Klass::cast(method()->method_holder())->is_interface() && JDK_Version::is_jdk12x_version()), "should call new_constructor instead"); | |
| 706 instanceKlassHandle holder (THREAD, method->method_holder()); | |
| 707 int slot = method->method_idnum(); | |
| 708 | |
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709 Symbol* signature = method->signature(); |
| 0 | 710 int parameter_count = ArgumentCount(signature).size(); |
| 711 oop return_type_oop = NULL; | |
| 712 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, &return_type_oop, CHECK_NULL); | |
| 713 if (parameter_types.is_null() || return_type_oop == NULL) return NULL; | |
| 714 | |
| 715 Handle return_type(THREAD, return_type_oop); | |
| 716 | |
| 717 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL); | |
| 718 | |
| 719 if (exception_types.is_null()) return NULL; | |
| 720 | |
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721 Symbol* method_name = method->name(); |
| 0 | 722 Handle name; |
| 723 if (intern_name) { | |
| 724 // intern_name is only true with UseNewReflection | |
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725 oop name_oop = StringTable::intern(method_name, CHECK_NULL); |
| 0 | 726 name = Handle(THREAD, name_oop); |
| 727 } else { | |
| 728 name = java_lang_String::create_from_symbol(method_name, CHECK_NULL); | |
| 729 } | |
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730 if (name == NULL) return NULL; |
| 0 | 731 |
| 732 int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 733 | |
| 734 Handle mh = java_lang_reflect_Method::create(CHECK_NULL); | |
| 735 | |
| 736 java_lang_reflect_Method::set_clazz(mh(), holder->java_mirror()); | |
| 737 java_lang_reflect_Method::set_slot(mh(), slot); | |
| 738 java_lang_reflect_Method::set_name(mh(), name()); | |
| 739 java_lang_reflect_Method::set_return_type(mh(), return_type()); | |
| 740 java_lang_reflect_Method::set_parameter_types(mh(), parameter_types()); | |
| 741 java_lang_reflect_Method::set_exception_types(mh(), exception_types()); | |
| 742 java_lang_reflect_Method::set_modifiers(mh(), modifiers); | |
| 743 java_lang_reflect_Method::set_override(mh(), false); | |
| 744 if (java_lang_reflect_Method::has_signature_field() && | |
| 745 method->generic_signature() != NULL) { | |
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746 Symbol* gs = method->generic_signature(); |
| 0 | 747 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); |
| 748 java_lang_reflect_Method::set_signature(mh(), sig()); | |
| 749 } | |
| 750 if (java_lang_reflect_Method::has_annotations_field()) { | |
| 751 java_lang_reflect_Method::set_annotations(mh(), method->annotations()); | |
| 752 } | |
| 753 if (java_lang_reflect_Method::has_parameter_annotations_field()) { | |
| 754 java_lang_reflect_Method::set_parameter_annotations(mh(), method->parameter_annotations()); | |
| 755 } | |
| 756 if (java_lang_reflect_Method::has_annotation_default_field()) { | |
| 757 java_lang_reflect_Method::set_annotation_default(mh(), method->annotation_default()); | |
| 758 } | |
| 759 return mh(); | |
| 760 } | |
| 761 | |
| 762 | |
| 763 oop Reflection::new_constructor(methodHandle method, TRAPS) { | |
| 764 assert(method()->is_initializer(), "should call new_method instead"); | |
| 765 | |
| 766 instanceKlassHandle holder (THREAD, method->method_holder()); | |
| 767 int slot = method->method_idnum(); | |
| 768 | |
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769 Symbol* signature = method->signature(); |
| 0 | 770 int parameter_count = ArgumentCount(signature).size(); |
| 771 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, NULL, CHECK_NULL); | |
| 772 if (parameter_types.is_null()) return NULL; | |
| 773 | |
| 774 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL); | |
| 775 if (exception_types.is_null()) return NULL; | |
| 776 | |
| 777 int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 778 | |
| 779 Handle ch = java_lang_reflect_Constructor::create(CHECK_NULL); | |
| 780 | |
| 781 java_lang_reflect_Constructor::set_clazz(ch(), holder->java_mirror()); | |
| 782 java_lang_reflect_Constructor::set_slot(ch(), slot); | |
| 783 java_lang_reflect_Constructor::set_parameter_types(ch(), parameter_types()); | |
| 784 java_lang_reflect_Constructor::set_exception_types(ch(), exception_types()); | |
| 785 java_lang_reflect_Constructor::set_modifiers(ch(), modifiers); | |
| 786 java_lang_reflect_Constructor::set_override(ch(), false); | |
| 787 if (java_lang_reflect_Constructor::has_signature_field() && | |
| 788 method->generic_signature() != NULL) { | |
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789 Symbol* gs = method->generic_signature(); |
| 0 | 790 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); |
| 791 java_lang_reflect_Constructor::set_signature(ch(), sig()); | |
| 792 } | |
| 793 if (java_lang_reflect_Constructor::has_annotations_field()) { | |
| 794 java_lang_reflect_Constructor::set_annotations(ch(), method->annotations()); | |
| 795 } | |
| 796 if (java_lang_reflect_Constructor::has_parameter_annotations_field()) { | |
| 797 java_lang_reflect_Constructor::set_parameter_annotations(ch(), method->parameter_annotations()); | |
| 798 } | |
| 799 return ch(); | |
| 800 } | |
| 801 | |
| 802 | |
| 803 oop Reflection::new_field(fieldDescriptor* fd, bool intern_name, TRAPS) { | |
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804 Symbol* field_name = fd->name(); |
| 0 | 805 Handle name; |
| 806 if (intern_name) { | |
| 807 // intern_name is only true with UseNewReflection | |
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808 oop name_oop = StringTable::intern(field_name, CHECK_NULL); |
| 0 | 809 name = Handle(THREAD, name_oop); |
| 810 } else { | |
| 811 name = java_lang_String::create_from_symbol(field_name, CHECK_NULL); | |
| 812 } | |
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813 Symbol* signature = fd->signature(); |
| 0 | 814 KlassHandle holder (THREAD, fd->field_holder()); |
| 815 Handle type = new_type(signature, holder, CHECK_NULL); | |
| 816 Handle rh = java_lang_reflect_Field::create(CHECK_NULL); | |
| 817 | |
| 818 java_lang_reflect_Field::set_clazz(rh(), Klass::cast(fd->field_holder())->java_mirror()); | |
| 819 java_lang_reflect_Field::set_slot(rh(), fd->index()); | |
| 820 java_lang_reflect_Field::set_name(rh(), name()); | |
| 821 java_lang_reflect_Field::set_type(rh(), type()); | |
| 822 // Note the ACC_ANNOTATION bit, which is a per-class access flag, is never set here. | |
| 823 java_lang_reflect_Field::set_modifiers(rh(), fd->access_flags().as_int() & JVM_RECOGNIZED_FIELD_MODIFIERS); | |
| 824 java_lang_reflect_Field::set_override(rh(), false); | |
| 825 if (java_lang_reflect_Field::has_signature_field() && | |
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826 fd->has_generic_signature()) { |
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827 Symbol* gs = fd->generic_signature(); |
| 0 | 828 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); |
| 829 java_lang_reflect_Field::set_signature(rh(), sig()); | |
| 830 } | |
| 831 if (java_lang_reflect_Field::has_annotations_field()) { | |
| 832 java_lang_reflect_Field::set_annotations(rh(), fd->annotations()); | |
| 833 } | |
| 834 return rh(); | |
| 835 } | |
| 836 | |
| 837 | |
| 838 methodHandle Reflection::resolve_interface_call(instanceKlassHandle klass, methodHandle method, | |
| 839 KlassHandle recv_klass, Handle receiver, TRAPS) { | |
| 840 assert(!method.is_null() , "method should not be null"); | |
| 841 | |
| 842 CallInfo info; | |
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843 Symbol* signature = method->signature(); |
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844 Symbol* name = method->name(); |
| 0 | 845 LinkResolver::resolve_interface_call(info, receiver, recv_klass, klass, |
| 846 name, signature, | |
| 847 KlassHandle(), false, true, | |
| 848 CHECK_(methodHandle())); | |
| 849 return info.selected_method(); | |
| 850 } | |
| 851 | |
| 852 | |
| 853 oop Reflection::invoke(instanceKlassHandle klass, methodHandle reflected_method, | |
| 854 Handle receiver, bool override, objArrayHandle ptypes, | |
| 855 BasicType rtype, objArrayHandle args, bool is_method_invoke, TRAPS) { | |
| 856 ResourceMark rm(THREAD); | |
| 857 | |
| 858 methodHandle method; // actual method to invoke | |
| 859 KlassHandle target_klass; // target klass, receiver's klass for non-static | |
| 860 | |
| 861 // Ensure klass is initialized | |
| 862 klass->initialize(CHECK_NULL); | |
| 863 | |
| 864 bool is_static = reflected_method->is_static(); | |
| 865 if (is_static) { | |
| 866 // ignore receiver argument | |
| 867 method = reflected_method; | |
| 868 target_klass = klass; | |
| 869 } else { | |
| 870 // check for null receiver | |
| 871 if (receiver.is_null()) { | |
| 872 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 873 } | |
| 874 // Check class of receiver against class declaring method | |
| 875 if (!receiver->is_a(klass())) { | |
| 876 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "object is not an instance of declaring class"); | |
| 877 } | |
| 878 // target klass is receiver's klass | |
| 879 target_klass = KlassHandle(THREAD, receiver->klass()); | |
| 880 // no need to resolve if method is private or <init> | |
| 881 if (reflected_method->is_private() || reflected_method->name() == vmSymbols::object_initializer_name()) { | |
| 882 method = reflected_method; | |
| 883 } else { | |
| 884 // resolve based on the receiver | |
| 885 if (instanceKlass::cast(reflected_method->method_holder())->is_interface()) { | |
| 886 // resolve interface call | |
| 887 if (ReflectionWrapResolutionErrors) { | |
| 888 // new default: 6531596 | |
| 889 // Match resolution errors with those thrown due to reflection inlining | |
| 890 // Linktime resolution & IllegalAccessCheck already done by Class.getMethod() | |
| 891 method = resolve_interface_call(klass, reflected_method, target_klass, receiver, THREAD); | |
| 892 if (HAS_PENDING_EXCEPTION) { | |
| 893 // Method resolution threw an exception; wrap it in an InvocationTargetException | |
| 894 oop resolution_exception = PENDING_EXCEPTION; | |
| 895 CLEAR_PENDING_EXCEPTION; | |
| 896 JavaCallArguments args(Handle(THREAD, resolution_exception)); | |
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897 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(), |
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898 vmSymbols::throwable_void_signature(), |
| 0 | 899 &args); |
| 900 } | |
| 901 } else { | |
| 902 method = resolve_interface_call(klass, reflected_method, target_klass, receiver, CHECK_(NULL)); | |
| 903 } | |
| 904 } else { | |
| 905 // if the method can be overridden, we resolve using the vtable index. | |
| 906 int index = reflected_method->vtable_index(); | |
| 907 method = reflected_method; | |
| 908 if (index != methodOopDesc::nonvirtual_vtable_index) { | |
| 909 // target_klass might be an arrayKlassOop but all vtables start at | |
| 910 // the same place. The cast is to avoid virtual call and assertion. | |
| 911 instanceKlass* inst = (instanceKlass*)target_klass()->klass_part(); | |
| 912 method = methodHandle(THREAD, inst->method_at_vtable(index)); | |
| 913 } | |
| 914 if (!method.is_null()) { | |
| 915 // Check for abstract methods as well | |
| 916 if (method->is_abstract()) { | |
| 917 // new default: 6531596 | |
| 918 if (ReflectionWrapResolutionErrors) { | |
| 919 ResourceMark rm(THREAD); | |
| 920 Handle h_origexception = Exceptions::new_exception(THREAD, | |
| 921 vmSymbols::java_lang_AbstractMethodError(), | |
| 922 methodOopDesc::name_and_sig_as_C_string(Klass::cast(target_klass()), | |
| 923 method->name(), | |
| 924 method->signature())); | |
| 925 JavaCallArguments args(h_origexception); | |
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926 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(), |
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927 vmSymbols::throwable_void_signature(), |
| 0 | 928 &args); |
| 929 } else { | |
| 930 ResourceMark rm(THREAD); | |
| 931 THROW_MSG_0(vmSymbols::java_lang_AbstractMethodError(), | |
| 932 methodOopDesc::name_and_sig_as_C_string(Klass::cast(target_klass()), | |
| 933 method->name(), | |
| 934 method->signature())); | |
| 935 } | |
| 936 } | |
| 937 } | |
| 938 } | |
| 939 } | |
| 940 } | |
| 941 | |
| 942 // I believe this is a ShouldNotGetHere case which requires | |
| 943 // an internal vtable bug. If you ever get this please let Karen know. | |
| 944 if (method.is_null()) { | |
| 945 ResourceMark rm(THREAD); | |
| 946 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
| 947 methodOopDesc::name_and_sig_as_C_string(Klass::cast(klass()), | |
| 948 reflected_method->name(), | |
| 949 reflected_method->signature())); | |
| 950 } | |
| 951 | |
| 952 // In the JDK 1.4 reflection implementation, the security check is | |
| 953 // done at the Java level | |
| 954 if (!(JDK_Version::is_gte_jdk14x_version() && UseNewReflection)) { | |
| 955 | |
| 956 // Access checking (unless overridden by Method) | |
| 957 if (!override) { | |
| 958 if (!(klass->is_public() && reflected_method->is_public())) { | |
| 959 bool access = Reflection::reflect_check_access(klass(), reflected_method->access_flags(), target_klass(), is_method_invoke, CHECK_NULL); | |
| 960 if (!access) { | |
| 961 return NULL; // exception | |
| 962 } | |
| 963 } | |
| 964 } | |
| 965 | |
| 966 } // !(Universe::is_gte_jdk14x_version() && UseNewReflection) | |
| 967 | |
| 968 assert(ptypes->is_objArray(), "just checking"); | |
| 969 int args_len = args.is_null() ? 0 : args->length(); | |
| 970 // Check number of arguments | |
| 971 if (ptypes->length() != args_len) { | |
| 972 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "wrong number of arguments"); | |
| 973 } | |
| 974 | |
| 975 // Create object to contain parameters for the JavaCall | |
| 976 JavaCallArguments java_args(method->size_of_parameters()); | |
| 977 | |
| 978 if (!is_static) { | |
| 979 java_args.push_oop(receiver); | |
| 980 } | |
| 981 | |
| 982 for (int i = 0; i < args_len; i++) { | |
| 983 oop type_mirror = ptypes->obj_at(i); | |
| 984 oop arg = args->obj_at(i); | |
| 985 if (java_lang_Class::is_primitive(type_mirror)) { | |
| 986 jvalue value; | |
| 987 BasicType ptype = basic_type_mirror_to_basic_type(type_mirror, CHECK_NULL); | |
| 988 BasicType atype = unbox_for_primitive(arg, &value, CHECK_NULL); | |
| 989 if (ptype != atype) { | |
| 990 widen(&value, atype, ptype, CHECK_NULL); | |
| 991 } | |
| 992 switch (ptype) { | |
| 993 case T_BOOLEAN: java_args.push_int(value.z); break; | |
| 994 case T_CHAR: java_args.push_int(value.c); break; | |
| 995 case T_BYTE: java_args.push_int(value.b); break; | |
| 996 case T_SHORT: java_args.push_int(value.s); break; | |
| 997 case T_INT: java_args.push_int(value.i); break; | |
| 998 case T_LONG: java_args.push_long(value.j); break; | |
| 999 case T_FLOAT: java_args.push_float(value.f); break; | |
| 1000 case T_DOUBLE: java_args.push_double(value.d); break; | |
| 1001 default: | |
| 1002 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
| 1003 } | |
| 1004 } else { | |
| 1005 if (arg != NULL) { | |
| 1006 klassOop k = java_lang_Class::as_klassOop(type_mirror); | |
| 1007 if (!arg->is_a(k)) { | |
| 1008 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
| 1009 } | |
| 1010 } | |
| 1011 Handle arg_handle(THREAD, arg); // Create handle for argument | |
| 1012 java_args.push_oop(arg_handle); // Push handle | |
| 1013 } | |
| 1014 } | |
| 1015 | |
| 1016 assert(java_args.size_of_parameters() == method->size_of_parameters(), "just checking"); | |
| 1017 | |
| 1018 // All oops (including receiver) is passed in as Handles. An potential oop is returned as an | |
| 1019 // oop (i.e., NOT as an handle) | |
| 1020 JavaValue result(rtype); | |
| 1021 JavaCalls::call(&result, method, &java_args, THREAD); | |
| 1022 | |
| 1023 if (HAS_PENDING_EXCEPTION) { | |
| 1024 // Method threw an exception; wrap it in an InvocationTargetException | |
| 1025 oop target_exception = PENDING_EXCEPTION; | |
| 1026 CLEAR_PENDING_EXCEPTION; | |
| 1027 JavaCallArguments args(Handle(THREAD, target_exception)); | |
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1028 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(), |
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1029 vmSymbols::throwable_void_signature(), |
| 0 | 1030 &args); |
| 1031 } else { | |
| 1032 if (rtype == T_BOOLEAN || rtype == T_BYTE || rtype == T_CHAR || rtype == T_SHORT) | |
| 1033 narrow((jvalue*) result.get_value_addr(), rtype, CHECK_NULL); | |
| 1034 return box((jvalue*) result.get_value_addr(), rtype, CHECK_NULL); | |
| 1035 } | |
| 1036 } | |
| 1037 | |
| 1038 | |
| 1039 void Reflection::narrow(jvalue* value, BasicType narrow_type, TRAPS) { | |
| 1040 switch (narrow_type) { | |
| 1041 case T_BOOLEAN: | |
| 1042 value->z = (jboolean) value->i; | |
| 1043 return; | |
| 1044 case T_BYTE: | |
| 1045 value->b = (jbyte) value->i; | |
| 1046 return; | |
| 1047 case T_CHAR: | |
| 1048 value->c = (jchar) value->i; | |
| 1049 return; | |
| 1050 case T_SHORT: | |
| 1051 value->s = (jshort) value->i; | |
| 1052 return; | |
| 1053 default: | |
| 1054 break; // fail | |
| 1055 } | |
| 1056 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
| 1057 } | |
| 1058 | |
| 1059 | |
| 1060 BasicType Reflection::basic_type_mirror_to_basic_type(oop basic_type_mirror, TRAPS) { | |
| 1061 assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking"); | |
| 1062 return java_lang_Class::primitive_type(basic_type_mirror); | |
| 1063 } | |
| 1064 | |
| 1065 // This would be nicer if, say, java.lang.reflect.Method was a subclass | |
| 1066 // of java.lang.reflect.Constructor | |
| 1067 | |
| 1068 oop Reflection::invoke_method(oop method_mirror, Handle receiver, objArrayHandle args, TRAPS) { | |
| 1069 oop mirror = java_lang_reflect_Method::clazz(method_mirror); | |
| 1070 int slot = java_lang_reflect_Method::slot(method_mirror); | |
| 1071 bool override = java_lang_reflect_Method::override(method_mirror) != 0; | |
| 1072 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Method::parameter_types(method_mirror))); | |
| 1073 | |
| 1074 oop return_type_mirror = java_lang_reflect_Method::return_type(method_mirror); | |
| 1075 BasicType rtype; | |
| 1076 if (java_lang_Class::is_primitive(return_type_mirror)) { | |
| 1077 rtype = basic_type_mirror_to_basic_type(return_type_mirror, CHECK_NULL); | |
| 1078 } else { | |
| 1079 rtype = T_OBJECT; | |
| 1080 } | |
| 1081 | |
| 1082 instanceKlassHandle klass(THREAD, java_lang_Class::as_klassOop(mirror)); | |
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1083 methodOop m = klass->method_with_idnum(slot); |
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1084 if (m == NULL) { |
| 0 | 1085 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke"); |
| 1086 } | |
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1087 methodHandle method(THREAD, m); |
| 0 | 1088 |
| 1089 return invoke(klass, method, receiver, override, ptypes, rtype, args, true, THREAD); | |
| 1090 } | |
| 1091 | |
| 1092 | |
| 1093 oop Reflection::invoke_constructor(oop constructor_mirror, objArrayHandle args, TRAPS) { | |
| 1094 oop mirror = java_lang_reflect_Constructor::clazz(constructor_mirror); | |
| 1095 int slot = java_lang_reflect_Constructor::slot(constructor_mirror); | |
| 1096 bool override = java_lang_reflect_Constructor::override(constructor_mirror) != 0; | |
| 1097 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Constructor::parameter_types(constructor_mirror))); | |
| 1098 | |
| 1099 instanceKlassHandle klass(THREAD, java_lang_Class::as_klassOop(mirror)); | |
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1100 methodOop m = klass->method_with_idnum(slot); |
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1101 if (m == NULL) { |
| 0 | 1102 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke"); |
| 1103 } | |
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1104 methodHandle method(THREAD, m); |
| 0 | 1105 assert(method->name() == vmSymbols::object_initializer_name(), "invalid constructor"); |
| 1106 | |
| 1107 // Make sure klass gets initialize | |
| 1108 klass->initialize(CHECK_NULL); | |
| 1109 | |
| 1110 // Create new instance (the receiver) | |
| 1111 klass->check_valid_for_instantiation(false, CHECK_NULL); | |
| 1112 Handle receiver = klass->allocate_instance_handle(CHECK_NULL); | |
| 1113 | |
| 1114 // Ignore result from call and return receiver | |
| 1115 invoke(klass, method, receiver, override, ptypes, T_VOID, args, false, CHECK_NULL); | |
| 1116 return receiver(); | |
| 1117 } |