Mercurial > hg > graal-jvmci-8
annotate src/share/vm/runtime/reflection.cpp @ 95:d05ebaf00ed0
Merge
author | tonyp |
---|---|
date | Thu, 27 Mar 2008 17:22:06 -0700 |
parents | 1ffa5cdd0b7e |
children | e7a91a357527 |
rev | line source |
---|---|
0 | 1 /* |
2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. | |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_reflection.cpp.incl" | |
27 | |
28 #define JAVA_1_5_VERSION 49 | |
29 | |
30 static void trace_class_resolution(klassOop to_class) { | |
31 ResourceMark rm; | |
32 int line_number = -1; | |
33 const char * source_file = NULL; | |
34 klassOop caller = NULL; | |
35 JavaThread* jthread = JavaThread::current(); | |
36 if (jthread->has_last_Java_frame()) { | |
37 vframeStream vfst(jthread); | |
38 // skip over any frames belonging to java.lang.Class | |
39 while (!vfst.at_end() && | |
40 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class()) { | |
41 vfst.next(); | |
42 } | |
43 if (!vfst.at_end()) { | |
44 // this frame is a likely suspect | |
45 caller = vfst.method()->method_holder(); | |
46 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
47 symbolOop s = instanceKlass::cast(vfst.method()->method_holder())->source_file_name(); | |
48 if (s != NULL) { | |
49 source_file = s->as_C_string(); | |
50 } | |
51 } | |
52 } | |
53 if (caller != NULL) { | |
54 const char * from = Klass::cast(caller)->external_name(); | |
55 const char * to = Klass::cast(to_class)->external_name(); | |
56 // print in a single call to reduce interleaving between threads | |
57 if (source_file != NULL) { | |
58 tty->print("RESOLVE %s %s %s:%d (reflection)\n", from, to, source_file, line_number); | |
59 } else { | |
60 tty->print("RESOLVE %s %s (reflection)\n", from, to); | |
61 } | |
62 } | |
63 } | |
64 | |
65 | |
66 oop Reflection::box(jvalue* value, BasicType type, TRAPS) { | |
67 if (type == T_VOID) { | |
68 return NULL; | |
69 } | |
70 if (type == T_OBJECT || type == T_ARRAY) { | |
71 // regular objects are not boxed | |
72 return (oop) value->l; | |
73 } | |
74 oop result = java_lang_boxing_object::create(type, value, CHECK_NULL); | |
75 if (result == NULL) { | |
76 THROW_(vmSymbols::java_lang_IllegalArgumentException(), result); | |
77 } | |
78 return result; | |
79 } | |
80 | |
81 | |
82 BasicType Reflection::unbox_for_primitive(oop box, jvalue* value, TRAPS) { | |
83 if (box == NULL) { | |
84 THROW_(vmSymbols::java_lang_IllegalArgumentException(), T_ILLEGAL); | |
85 } | |
86 return java_lang_boxing_object::get_value(box, value); | |
87 } | |
88 | |
89 BasicType Reflection::unbox_for_regular_object(oop box, jvalue* value) { | |
90 // Note: box is really the unboxed oop. It might even be a Short, etc.! | |
91 value->l = (jobject) box; | |
92 return T_OBJECT; | |
93 } | |
94 | |
95 | |
96 void Reflection::widen(jvalue* value, BasicType current_type, BasicType wide_type, TRAPS) { | |
97 assert(wide_type != current_type, "widen should not be called with identical types"); | |
98 switch (wide_type) { | |
99 case T_BOOLEAN: | |
100 case T_BYTE: | |
101 case T_CHAR: | |
102 break; // fail | |
103 case T_SHORT: | |
104 switch (current_type) { | |
105 case T_BYTE: | |
106 value->s = (jshort) value->b; | |
107 return; | |
108 } | |
109 break; // fail | |
110 case T_INT: | |
111 switch (current_type) { | |
112 case T_BYTE: | |
113 value->i = (jint) value->b; | |
114 return; | |
115 case T_CHAR: | |
116 value->i = (jint) value->c; | |
117 return; | |
118 case T_SHORT: | |
119 value->i = (jint) value->s; | |
120 return; | |
121 } | |
122 break; // fail | |
123 case T_LONG: | |
124 switch (current_type) { | |
125 case T_BYTE: | |
126 value->j = (jlong) value->b; | |
127 return; | |
128 case T_CHAR: | |
129 value->j = (jlong) value->c; | |
130 return; | |
131 case T_SHORT: | |
132 value->j = (jlong) value->s; | |
133 return; | |
134 case T_INT: | |
135 value->j = (jlong) value->i; | |
136 return; | |
137 } | |
138 break; // fail | |
139 case T_FLOAT: | |
140 switch (current_type) { | |
141 case T_BYTE: | |
142 value->f = (jfloat) value->b; | |
143 return; | |
144 case T_CHAR: | |
145 value->f = (jfloat) value->c; | |
146 return; | |
147 case T_SHORT: | |
148 value->f = (jfloat) value->s; | |
149 return; | |
150 case T_INT: | |
151 value->f = (jfloat) value->i; | |
152 return; | |
153 case T_LONG: | |
154 value->f = (jfloat) value->j; | |
155 return; | |
156 } | |
157 break; // fail | |
158 case T_DOUBLE: | |
159 switch (current_type) { | |
160 case T_BYTE: | |
161 value->d = (jdouble) value->b; | |
162 return; | |
163 case T_CHAR: | |
164 value->d = (jdouble) value->c; | |
165 return; | |
166 case T_SHORT: | |
167 value->d = (jdouble) value->s; | |
168 return; | |
169 case T_INT: | |
170 value->d = (jdouble) value->i; | |
171 return; | |
172 case T_FLOAT: | |
173 value->d = (jdouble) value->f; | |
174 return; | |
175 case T_LONG: | |
176 value->d = (jdouble) value->j; | |
177 return; | |
178 } | |
179 break; // fail | |
180 default: | |
181 break; // fail | |
182 } | |
183 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
184 } | |
185 | |
186 | |
187 BasicType Reflection::array_get(jvalue* value, arrayOop a, int index, TRAPS) { | |
188 if (!a->is_within_bounds(index)) { | |
189 THROW_(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), T_ILLEGAL); | |
190 } | |
191 if (a->is_objArray()) { | |
192 value->l = (jobject) objArrayOop(a)->obj_at(index); | |
193 return T_OBJECT; | |
194 } else { | |
195 assert(a->is_typeArray(), "just checking"); | |
196 BasicType type = typeArrayKlass::cast(a->klass())->element_type(); | |
197 switch (type) { | |
198 case T_BOOLEAN: | |
199 value->z = typeArrayOop(a)->bool_at(index); | |
200 break; | |
201 case T_CHAR: | |
202 value->c = typeArrayOop(a)->char_at(index); | |
203 break; | |
204 case T_FLOAT: | |
205 value->f = typeArrayOop(a)->float_at(index); | |
206 break; | |
207 case T_DOUBLE: | |
208 value->d = typeArrayOop(a)->double_at(index); | |
209 break; | |
210 case T_BYTE: | |
211 value->b = typeArrayOop(a)->byte_at(index); | |
212 break; | |
213 case T_SHORT: | |
214 value->s = typeArrayOop(a)->short_at(index); | |
215 break; | |
216 case T_INT: | |
217 value->i = typeArrayOop(a)->int_at(index); | |
218 break; | |
219 case T_LONG: | |
220 value->j = typeArrayOop(a)->long_at(index); | |
221 break; | |
222 default: | |
223 return T_ILLEGAL; | |
224 } | |
225 return type; | |
226 } | |
227 } | |
228 | |
229 | |
230 void Reflection::array_set(jvalue* value, arrayOop a, int index, BasicType value_type, TRAPS) { | |
231 if (!a->is_within_bounds(index)) { | |
232 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
233 } | |
234 if (a->is_objArray()) { | |
235 if (value_type == T_OBJECT) { | |
236 oop obj = (oop) value->l; | |
237 if (obj != NULL) { | |
238 klassOop element_klass = objArrayKlass::cast(a->klass())->element_klass(); | |
239 if (!obj->is_a(element_klass)) { | |
240 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "array element type mismatch"); | |
241 } | |
242 } | |
243 objArrayOop(a)->obj_at_put(index, obj); | |
244 } | |
245 } else { | |
246 assert(a->is_typeArray(), "just checking"); | |
247 BasicType array_type = typeArrayKlass::cast(a->klass())->element_type(); | |
248 if (array_type != value_type) { | |
249 // The widen operation can potentially throw an exception, but cannot block, | |
250 // so typeArrayOop a is safe if the call succeeds. | |
251 widen(value, value_type, array_type, CHECK); | |
252 } | |
253 switch (array_type) { | |
254 case T_BOOLEAN: | |
255 typeArrayOop(a)->bool_at_put(index, value->z); | |
256 break; | |
257 case T_CHAR: | |
258 typeArrayOop(a)->char_at_put(index, value->c); | |
259 break; | |
260 case T_FLOAT: | |
261 typeArrayOop(a)->float_at_put(index, value->f); | |
262 break; | |
263 case T_DOUBLE: | |
264 typeArrayOop(a)->double_at_put(index, value->d); | |
265 break; | |
266 case T_BYTE: | |
267 typeArrayOop(a)->byte_at_put(index, value->b); | |
268 break; | |
269 case T_SHORT: | |
270 typeArrayOop(a)->short_at_put(index, value->s); | |
271 break; | |
272 case T_INT: | |
273 typeArrayOop(a)->int_at_put(index, value->i); | |
274 break; | |
275 case T_LONG: | |
276 typeArrayOop(a)->long_at_put(index, value->j); | |
277 break; | |
278 default: | |
279 THROW(vmSymbols::java_lang_IllegalArgumentException()); | |
280 } | |
281 } | |
282 } | |
283 | |
284 | |
285 klassOop Reflection::basic_type_mirror_to_arrayklass(oop basic_type_mirror, TRAPS) { | |
286 assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking"); | |
287 BasicType type = java_lang_Class::primitive_type(basic_type_mirror); | |
288 if (type == T_VOID) { | |
289 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
290 } else { | |
291 return Universe::typeArrayKlassObj(type); | |
292 } | |
293 } | |
294 | |
295 | |
296 oop Reflection:: basic_type_arrayklass_to_mirror(klassOop basic_type_arrayklass, TRAPS) { | |
297 BasicType type = typeArrayKlass::cast(basic_type_arrayklass)->element_type(); | |
298 return Universe::java_mirror(type); | |
299 } | |
300 | |
301 | |
302 arrayOop Reflection::reflect_new_array(oop element_mirror, jint length, TRAPS) { | |
303 if (element_mirror == NULL) { | |
304 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
305 } | |
306 if (length < 0) { | |
307 THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); | |
308 } | |
309 if (java_lang_Class::is_primitive(element_mirror)) { | |
310 klassOop tak = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL); | |
311 return typeArrayKlass::cast(tak)->allocate(length, THREAD); | |
312 } else { | |
313 klassOop k = java_lang_Class::as_klassOop(element_mirror); | |
314 if (Klass::cast(k)->oop_is_array() && arrayKlass::cast(k)->dimension() >= MAX_DIM) { | |
315 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
316 } | |
317 return oopFactory::new_objArray(k, length, THREAD); | |
318 } | |
319 } | |
320 | |
321 | |
322 arrayOop Reflection::reflect_new_multi_array(oop element_mirror, typeArrayOop dim_array, TRAPS) { | |
323 assert(dim_array->is_typeArray(), "just checking"); | |
324 assert(typeArrayKlass::cast(dim_array->klass())->element_type() == T_INT, "just checking"); | |
325 | |
326 if (element_mirror == NULL) { | |
327 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
328 } | |
329 | |
330 int len = dim_array->length(); | |
331 if (len <= 0 || len > MAX_DIM) { | |
332 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
333 } | |
334 | |
335 jint dimensions[MAX_DIM]; // C array copy of intArrayOop | |
336 for (int i = 0; i < len; i++) { | |
337 int d = dim_array->int_at(i); | |
338 if (d < 0) { | |
339 THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); | |
340 } | |
341 dimensions[i] = d; | |
342 } | |
343 | |
344 klassOop klass; | |
345 int dim = len; | |
346 if (java_lang_Class::is_primitive(element_mirror)) { | |
347 klass = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL); | |
348 } else { | |
349 klass = java_lang_Class::as_klassOop(element_mirror); | |
350 if (Klass::cast(klass)->oop_is_array()) { | |
351 int k_dim = arrayKlass::cast(klass)->dimension(); | |
352 if (k_dim + len > MAX_DIM) { | |
353 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
354 } | |
355 dim += k_dim; | |
356 } | |
357 } | |
358 klass = Klass::cast(klass)->array_klass(dim, CHECK_NULL); | |
359 oop obj = arrayKlass::cast(klass)->multi_allocate(len, dimensions, THREAD); | |
360 assert(obj->is_array(), "just checking"); | |
361 return arrayOop(obj); | |
362 } | |
363 | |
364 | |
365 oop Reflection::array_component_type(oop mirror, TRAPS) { | |
366 if (java_lang_Class::is_primitive(mirror)) { | |
367 return NULL; | |
368 } | |
369 | |
370 klassOop klass = java_lang_Class::as_klassOop(mirror); | |
371 if (!Klass::cast(klass)->oop_is_array()) { | |
372 return NULL; | |
373 } | |
374 | |
375 oop result = arrayKlass::cast(klass)->component_mirror(); | |
376 #ifdef ASSERT | |
377 oop result2 = NULL; | |
378 if (arrayKlass::cast(klass)->dimension() == 1) { | |
379 if (Klass::cast(klass)->oop_is_typeArray()) { | |
380 result2 = basic_type_arrayklass_to_mirror(klass, CHECK_NULL); | |
381 } else { | |
382 result2 = Klass::cast(objArrayKlass::cast(klass)->element_klass())->java_mirror(); | |
383 } | |
384 } else { | |
385 klassOop lower_dim = arrayKlass::cast(klass)->lower_dimension(); | |
386 assert(Klass::cast(lower_dim)->oop_is_array(), "just checking"); | |
387 result2 = Klass::cast(lower_dim)->java_mirror(); | |
388 } | |
389 assert(result == result2, "results must be consistent"); | |
390 #endif //ASSERT | |
391 return result; | |
392 } | |
393 | |
394 | |
395 bool Reflection::reflect_check_access(klassOop field_class, AccessFlags acc, klassOop target_class, bool is_method_invoke, TRAPS) { | |
396 // field_class : declaring class | |
397 // acc : declared field access | |
398 // target_class : for protected | |
399 | |
400 // Check if field or method is accessible to client. Throw an | |
401 // IllegalAccessException and return false if not. | |
402 | |
403 // The "client" is the class associated with the nearest real frame | |
404 // getCallerClass already skips Method.invoke frames, so pass 0 in | |
405 // that case (same as classic). | |
406 ResourceMark rm(THREAD); | |
407 assert(THREAD->is_Java_thread(), "sanity check"); | |
408 klassOop client_class = ((JavaThread *)THREAD)->security_get_caller_class(is_method_invoke ? 0 : 1); | |
409 | |
410 if (client_class != field_class) { | |
411 if (!verify_class_access(client_class, field_class, false) | |
412 || !verify_field_access(client_class, | |
413 field_class, | |
414 field_class, | |
415 acc, | |
416 false)) { | |
417 THROW_(vmSymbols::java_lang_IllegalAccessException(), false); | |
418 } | |
419 } | |
420 | |
421 // Additional test for protected members: JLS 6.6.2 | |
422 | |
423 if (acc.is_protected()) { | |
424 if (target_class != client_class) { | |
425 if (!is_same_class_package(client_class, field_class)) { | |
426 if (!Klass::cast(target_class)->is_subclass_of(client_class)) { | |
427 THROW_(vmSymbols::java_lang_IllegalAccessException(), false); | |
428 } | |
429 } | |
430 } | |
431 } | |
432 | |
433 // Passed all tests | |
434 return true; | |
435 } | |
436 | |
437 | |
438 bool Reflection::verify_class_access(klassOop current_class, klassOop new_class, bool classloader_only) { | |
439 // Verify that current_class can access new_class. If the classloader_only | |
440 // flag is set, we automatically allow any accesses in which current_class | |
441 // doesn't have a classloader. | |
442 if ((current_class == NULL) || | |
443 (current_class == new_class) || | |
444 (instanceKlass::cast(new_class)->is_public()) || | |
445 is_same_class_package(current_class, new_class)) { | |
446 return true; | |
447 } | |
448 // New (1.4) reflection implementation. Allow all accesses from | |
449 // sun/reflect/MagicAccessorImpl subclasses to succeed trivially. | |
450 if ( JDK_Version::is_gte_jdk14x_version() | |
451 && UseNewReflection | |
452 && Klass::cast(current_class)->is_subclass_of(SystemDictionary::reflect_magic_klass())) { | |
453 return true; | |
454 } | |
455 | |
456 return can_relax_access_check_for(current_class, new_class, classloader_only); | |
457 } | |
458 | |
459 bool Reflection::can_relax_access_check_for( | |
460 klassOop accessor, klassOop accessee, bool classloader_only) { | |
461 instanceKlass* accessor_ik = instanceKlass::cast(accessor); | |
462 instanceKlass* accessee_ik = instanceKlass::cast(accessee); | |
463 if (RelaxAccessControlCheck || | |
464 (accessor_ik->major_version() < JAVA_1_5_VERSION && | |
465 accessee_ik->major_version() < JAVA_1_5_VERSION)) { | |
466 return classloader_only && | |
467 Verifier::relax_verify_for(accessor_ik->class_loader()) && | |
468 accessor_ik->protection_domain() == accessee_ik->protection_domain() && | |
469 accessor_ik->class_loader() == accessee_ik->class_loader(); | |
470 } else { | |
471 return false; | |
472 } | |
473 } | |
474 | |
475 bool Reflection::verify_field_access(klassOop current_class, | |
476 klassOop resolved_class, | |
477 klassOop field_class, | |
478 AccessFlags access, | |
479 bool classloader_only, | |
480 bool protected_restriction) { | |
481 // Verify that current_class can access a field of field_class, where that | |
482 // field's access bits are "access". We assume that we've already verified | |
483 // that current_class can access field_class. | |
484 // | |
485 // If the classloader_only flag is set, we automatically allow any accesses | |
486 // in which current_class doesn't have a classloader. | |
487 // | |
488 // "resolved_class" is the runtime type of "field_class". Sometimes we don't | |
489 // need this distinction (e.g. if all we have is the runtime type, or during | |
490 // class file parsing when we only care about the static type); in that case | |
491 // callers should ensure that resolved_class == field_class. | |
492 // | |
493 if ((current_class == NULL) || | |
494 (current_class == field_class) || | |
495 access.is_public()) { | |
496 return true; | |
497 } | |
498 | |
499 if (access.is_protected()) { | |
500 if (!protected_restriction) { | |
501 // See if current_class is a subclass of field_class | |
502 if (Klass::cast(current_class)->is_subclass_of(field_class)) { | |
503 if (current_class == resolved_class || | |
504 field_class == resolved_class || | |
505 Klass::cast(current_class)->is_subclass_of(resolved_class) || | |
506 Klass::cast(resolved_class)->is_subclass_of(current_class)) { | |
507 return true; | |
508 } | |
509 } | |
510 } | |
511 } | |
512 | |
513 if (!access.is_private() && is_same_class_package(current_class, field_class)) { | |
514 return true; | |
515 } | |
516 | |
517 // New (1.4) reflection implementation. Allow all accesses from | |
518 // sun/reflect/MagicAccessorImpl subclasses to succeed trivially. | |
519 if ( JDK_Version::is_gte_jdk14x_version() | |
520 && UseNewReflection | |
521 && Klass::cast(current_class)->is_subclass_of(SystemDictionary::reflect_magic_klass())) { | |
522 return true; | |
523 } | |
524 | |
525 return can_relax_access_check_for( | |
526 current_class, field_class, classloader_only); | |
527 } | |
528 | |
529 | |
530 bool Reflection::is_same_class_package(klassOop class1, klassOop class2) { | |
531 return instanceKlass::cast(class1)->is_same_class_package(class2); | |
532 } | |
533 | |
534 | |
535 // Checks that the 'outer' klass has declared 'inner' as being an inner klass. If not, | |
536 // throw an incompatible class change exception | |
537 void Reflection::check_for_inner_class(instanceKlassHandle outer, instanceKlassHandle inner, TRAPS) { | |
538 const int inner_class_info_index = 0; | |
539 const int outer_class_info_index = 1; | |
540 | |
541 typeArrayHandle icls (THREAD, outer->inner_classes()); | |
542 constantPoolHandle cp (THREAD, outer->constants()); | |
543 for(int i = 0; i < icls->length(); i += 4) { | |
544 int ioff = icls->ushort_at(i + inner_class_info_index); | |
545 int ooff = icls->ushort_at(i + outer_class_info_index); | |
546 | |
547 if (ioff != 0 && ooff != 0) { | |
548 klassOop o = cp->klass_at(ooff, CHECK); | |
549 if (o == outer()) { | |
550 klassOop i = cp->klass_at(ioff, CHECK); | |
551 if (i == inner()) { | |
552 return; | |
553 } | |
554 } | |
555 } | |
556 } | |
557 | |
558 // 'inner' not declared as an inner klass in outer | |
559 ResourceMark rm(THREAD); | |
560 Exceptions::fthrow( | |
561 THREAD_AND_LOCATION, | |
562 vmSymbolHandles::java_lang_IncompatibleClassChangeError(), | |
563 "%s and %s disagree on InnerClasses attribute", | |
564 outer->external_name(), | |
565 inner->external_name() | |
566 ); | |
567 } | |
568 | |
569 // Utility method converting a single SignatureStream element into java.lang.Class instance | |
570 | |
571 oop get_mirror_from_signature(methodHandle method, SignatureStream* ss, TRAPS) { | |
572 switch (ss->type()) { | |
573 default: | |
574 assert(ss->type() != T_VOID || ss->at_return_type(), "T_VOID should only appear as return type"); | |
575 return java_lang_Class::primitive_mirror(ss->type()); | |
576 case T_OBJECT: | |
577 case T_ARRAY: | |
578 symbolOop name = ss->as_symbol(CHECK_NULL); | |
579 oop loader = instanceKlass::cast(method->method_holder())->class_loader(); | |
580 oop protection_domain = instanceKlass::cast(method->method_holder())->protection_domain(); | |
581 klassOop k = SystemDictionary::resolve_or_fail( | |
582 symbolHandle(THREAD, name), | |
583 Handle(THREAD, loader), | |
584 Handle(THREAD, protection_domain), | |
585 true, CHECK_NULL); | |
586 if (TraceClassResolution) { | |
587 trace_class_resolution(k); | |
588 } | |
589 return k->klass_part()->java_mirror(); | |
590 }; | |
591 } | |
592 | |
593 | |
594 objArrayHandle Reflection::get_parameter_types(methodHandle method, int parameter_count, oop* return_type, TRAPS) { | |
595 // Allocate array holding parameter types (java.lang.Class instances) | |
596 objArrayOop m = oopFactory::new_objArray(SystemDictionary::class_klass(), parameter_count, CHECK_(objArrayHandle())); | |
597 objArrayHandle mirrors (THREAD, m); | |
598 int index = 0; | |
599 // Collect parameter types | |
600 symbolHandle signature (THREAD, method->signature()); | |
601 SignatureStream ss(signature); | |
602 while (!ss.at_return_type()) { | |
603 oop mirror = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle())); | |
604 mirrors->obj_at_put(index++, mirror); | |
605 ss.next(); | |
606 } | |
607 assert(index == parameter_count, "invalid parameter count"); | |
608 if (return_type != NULL) { | |
609 // Collect return type as well | |
610 assert(ss.at_return_type(), "return type should be present"); | |
611 *return_type = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle())); | |
612 } | |
613 return mirrors; | |
614 } | |
615 | |
616 objArrayHandle Reflection::get_exception_types(methodHandle method, TRAPS) { | |
617 return method->resolved_checked_exceptions(CHECK_(objArrayHandle())); | |
618 } | |
619 | |
620 | |
621 Handle Reflection::new_type(symbolHandle signature, KlassHandle k, TRAPS) { | |
622 // Basic types | |
623 BasicType type = vmSymbols::signature_type(signature()); | |
624 if (type != T_OBJECT) { | |
625 return Handle(THREAD, Universe::java_mirror(type)); | |
626 } | |
627 | |
628 oop loader = instanceKlass::cast(k())->class_loader(); | |
629 oop protection_domain = Klass::cast(k())->protection_domain(); | |
630 klassOop result = SystemDictionary::resolve_or_fail(signature, | |
631 Handle(THREAD, loader), | |
632 Handle(THREAD, protection_domain), | |
633 true, CHECK_(Handle())); | |
634 | |
635 if (TraceClassResolution) { | |
636 trace_class_resolution(result); | |
637 } | |
638 | |
639 oop nt = Klass::cast(result)->java_mirror(); | |
640 return Handle(THREAD, nt); | |
641 } | |
642 | |
643 | |
644 oop Reflection::new_method(methodHandle method, bool intern_name, bool for_constant_pool_access, TRAPS) { | |
645 // In jdk1.2.x, getMethods on an interface erroneously includes <clinit>, thus the complicated assert. | |
646 // Also allow sun.reflect.ConstantPool to refer to <clinit> methods as java.lang.reflect.Methods. | |
647 assert(!method()->is_initializer() || | |
648 (for_constant_pool_access && method()->is_static()) || | |
649 (method()->name() == vmSymbols::class_initializer_name() | |
650 && Klass::cast(method()->method_holder())->is_interface() && JDK_Version::is_jdk12x_version()), "should call new_constructor instead"); | |
651 instanceKlassHandle holder (THREAD, method->method_holder()); | |
652 int slot = method->method_idnum(); | |
653 | |
654 symbolHandle signature (THREAD, method->signature()); | |
655 int parameter_count = ArgumentCount(signature).size(); | |
656 oop return_type_oop = NULL; | |
657 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, &return_type_oop, CHECK_NULL); | |
658 if (parameter_types.is_null() || return_type_oop == NULL) return NULL; | |
659 | |
660 Handle return_type(THREAD, return_type_oop); | |
661 | |
662 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL); | |
663 | |
664 if (exception_types.is_null()) return NULL; | |
665 | |
666 symbolHandle method_name(THREAD, method->name()); | |
667 Handle name; | |
668 if (intern_name) { | |
669 // intern_name is only true with UseNewReflection | |
670 oop name_oop = StringTable::intern(method_name(), CHECK_NULL); | |
671 name = Handle(THREAD, name_oop); | |
672 } else { | |
673 name = java_lang_String::create_from_symbol(method_name, CHECK_NULL); | |
674 } | |
675 if (name.is_null()) return NULL; | |
676 | |
677 int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
678 | |
679 Handle mh = java_lang_reflect_Method::create(CHECK_NULL); | |
680 | |
681 java_lang_reflect_Method::set_clazz(mh(), holder->java_mirror()); | |
682 java_lang_reflect_Method::set_slot(mh(), slot); | |
683 java_lang_reflect_Method::set_name(mh(), name()); | |
684 java_lang_reflect_Method::set_return_type(mh(), return_type()); | |
685 java_lang_reflect_Method::set_parameter_types(mh(), parameter_types()); | |
686 java_lang_reflect_Method::set_exception_types(mh(), exception_types()); | |
687 java_lang_reflect_Method::set_modifiers(mh(), modifiers); | |
688 java_lang_reflect_Method::set_override(mh(), false); | |
689 if (java_lang_reflect_Method::has_signature_field() && | |
690 method->generic_signature() != NULL) { | |
691 symbolHandle gs(THREAD, method->generic_signature()); | |
692 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); | |
693 java_lang_reflect_Method::set_signature(mh(), sig()); | |
694 } | |
695 if (java_lang_reflect_Method::has_annotations_field()) { | |
696 java_lang_reflect_Method::set_annotations(mh(), method->annotations()); | |
697 } | |
698 if (java_lang_reflect_Method::has_parameter_annotations_field()) { | |
699 java_lang_reflect_Method::set_parameter_annotations(mh(), method->parameter_annotations()); | |
700 } | |
701 if (java_lang_reflect_Method::has_annotation_default_field()) { | |
702 java_lang_reflect_Method::set_annotation_default(mh(), method->annotation_default()); | |
703 } | |
704 return mh(); | |
705 } | |
706 | |
707 | |
708 oop Reflection::new_constructor(methodHandle method, TRAPS) { | |
709 assert(method()->is_initializer(), "should call new_method instead"); | |
710 | |
711 instanceKlassHandle holder (THREAD, method->method_holder()); | |
712 int slot = method->method_idnum(); | |
713 | |
714 symbolHandle signature (THREAD, method->signature()); | |
715 int parameter_count = ArgumentCount(signature).size(); | |
716 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, NULL, CHECK_NULL); | |
717 if (parameter_types.is_null()) return NULL; | |
718 | |
719 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL); | |
720 if (exception_types.is_null()) return NULL; | |
721 | |
722 int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
723 | |
724 Handle ch = java_lang_reflect_Constructor::create(CHECK_NULL); | |
725 | |
726 java_lang_reflect_Constructor::set_clazz(ch(), holder->java_mirror()); | |
727 java_lang_reflect_Constructor::set_slot(ch(), slot); | |
728 java_lang_reflect_Constructor::set_parameter_types(ch(), parameter_types()); | |
729 java_lang_reflect_Constructor::set_exception_types(ch(), exception_types()); | |
730 java_lang_reflect_Constructor::set_modifiers(ch(), modifiers); | |
731 java_lang_reflect_Constructor::set_override(ch(), false); | |
732 if (java_lang_reflect_Constructor::has_signature_field() && | |
733 method->generic_signature() != NULL) { | |
734 symbolHandle gs(THREAD, method->generic_signature()); | |
735 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); | |
736 java_lang_reflect_Constructor::set_signature(ch(), sig()); | |
737 } | |
738 if (java_lang_reflect_Constructor::has_annotations_field()) { | |
739 java_lang_reflect_Constructor::set_annotations(ch(), method->annotations()); | |
740 } | |
741 if (java_lang_reflect_Constructor::has_parameter_annotations_field()) { | |
742 java_lang_reflect_Constructor::set_parameter_annotations(ch(), method->parameter_annotations()); | |
743 } | |
744 return ch(); | |
745 } | |
746 | |
747 | |
748 oop Reflection::new_field(fieldDescriptor* fd, bool intern_name, TRAPS) { | |
749 symbolHandle field_name(THREAD, fd->name()); | |
750 Handle name; | |
751 if (intern_name) { | |
752 // intern_name is only true with UseNewReflection | |
753 oop name_oop = StringTable::intern(field_name(), CHECK_NULL); | |
754 name = Handle(THREAD, name_oop); | |
755 } else { | |
756 name = java_lang_String::create_from_symbol(field_name, CHECK_NULL); | |
757 } | |
758 symbolHandle signature (THREAD, fd->signature()); | |
759 KlassHandle holder (THREAD, fd->field_holder()); | |
760 Handle type = new_type(signature, holder, CHECK_NULL); | |
761 Handle rh = java_lang_reflect_Field::create(CHECK_NULL); | |
762 | |
763 java_lang_reflect_Field::set_clazz(rh(), Klass::cast(fd->field_holder())->java_mirror()); | |
764 java_lang_reflect_Field::set_slot(rh(), fd->index()); | |
765 java_lang_reflect_Field::set_name(rh(), name()); | |
766 java_lang_reflect_Field::set_type(rh(), type()); | |
767 // Note the ACC_ANNOTATION bit, which is a per-class access flag, is never set here. | |
768 java_lang_reflect_Field::set_modifiers(rh(), fd->access_flags().as_int() & JVM_RECOGNIZED_FIELD_MODIFIERS); | |
769 java_lang_reflect_Field::set_override(rh(), false); | |
770 if (java_lang_reflect_Field::has_signature_field() && | |
771 fd->generic_signature() != NULL) { | |
772 symbolHandle gs(THREAD, fd->generic_signature()); | |
773 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); | |
774 java_lang_reflect_Field::set_signature(rh(), sig()); | |
775 } | |
776 if (java_lang_reflect_Field::has_annotations_field()) { | |
777 java_lang_reflect_Field::set_annotations(rh(), fd->annotations()); | |
778 } | |
779 return rh(); | |
780 } | |
781 | |
782 | |
783 //--------------------------------------------------------------------------- | |
784 // | |
785 // Supporting routines for old native code-based reflection (pre-JDK 1.4). | |
786 // | |
787 // See reflection.hpp for details. | |
788 // | |
789 //--------------------------------------------------------------------------- | |
790 | |
791 #ifdef SUPPORT_OLD_REFLECTION | |
792 | |
793 methodHandle Reflection::resolve_interface_call(instanceKlassHandle klass, methodHandle method, | |
794 KlassHandle recv_klass, Handle receiver, TRAPS) { | |
795 assert(!method.is_null() , "method should not be null"); | |
796 | |
797 CallInfo info; | |
798 symbolHandle signature (THREAD, method->signature()); | |
799 symbolHandle name (THREAD, method->name()); | |
800 LinkResolver::resolve_interface_call(info, receiver, recv_klass, klass, | |
801 name, signature, | |
802 KlassHandle(), false, true, | |
803 CHECK_(methodHandle())); | |
804 return info.selected_method(); | |
805 } | |
806 | |
807 | |
808 oop Reflection::invoke(instanceKlassHandle klass, methodHandle reflected_method, | |
809 Handle receiver, bool override, objArrayHandle ptypes, | |
810 BasicType rtype, objArrayHandle args, bool is_method_invoke, TRAPS) { | |
811 ResourceMark rm(THREAD); | |
812 | |
813 methodHandle method; // actual method to invoke | |
814 KlassHandle target_klass; // target klass, receiver's klass for non-static | |
815 | |
816 // Ensure klass is initialized | |
817 klass->initialize(CHECK_NULL); | |
818 | |
819 bool is_static = reflected_method->is_static(); | |
820 if (is_static) { | |
821 // ignore receiver argument | |
822 method = reflected_method; | |
823 target_klass = klass; | |
824 } else { | |
825 // check for null receiver | |
826 if (receiver.is_null()) { | |
827 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
828 } | |
829 // Check class of receiver against class declaring method | |
830 if (!receiver->is_a(klass())) { | |
831 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "object is not an instance of declaring class"); | |
832 } | |
833 // target klass is receiver's klass | |
834 target_klass = KlassHandle(THREAD, receiver->klass()); | |
835 // no need to resolve if method is private or <init> | |
836 if (reflected_method->is_private() || reflected_method->name() == vmSymbols::object_initializer_name()) { | |
837 method = reflected_method; | |
838 } else { | |
839 // resolve based on the receiver | |
840 if (instanceKlass::cast(reflected_method->method_holder())->is_interface()) { | |
841 // resolve interface call | |
842 if (ReflectionWrapResolutionErrors) { | |
843 // new default: 6531596 | |
844 // Match resolution errors with those thrown due to reflection inlining | |
845 // Linktime resolution & IllegalAccessCheck already done by Class.getMethod() | |
846 method = resolve_interface_call(klass, reflected_method, target_klass, receiver, THREAD); | |
847 if (HAS_PENDING_EXCEPTION) { | |
848 // Method resolution threw an exception; wrap it in an InvocationTargetException | |
849 oop resolution_exception = PENDING_EXCEPTION; | |
850 CLEAR_PENDING_EXCEPTION; | |
851 JavaCallArguments args(Handle(THREAD, resolution_exception)); | |
852 THROW_ARG_0(vmSymbolHandles::java_lang_reflect_InvocationTargetException(), | |
853 vmSymbolHandles::throwable_void_signature(), | |
854 &args); | |
855 } | |
856 } else { | |
857 method = resolve_interface_call(klass, reflected_method, target_klass, receiver, CHECK_(NULL)); | |
858 } | |
859 } else { | |
860 // if the method can be overridden, we resolve using the vtable index. | |
861 int index = reflected_method->vtable_index(); | |
862 method = reflected_method; | |
863 if (index != methodOopDesc::nonvirtual_vtable_index) { | |
864 // target_klass might be an arrayKlassOop but all vtables start at | |
865 // the same place. The cast is to avoid virtual call and assertion. | |
866 instanceKlass* inst = (instanceKlass*)target_klass()->klass_part(); | |
867 method = methodHandle(THREAD, inst->method_at_vtable(index)); | |
868 } | |
869 if (!method.is_null()) { | |
870 // Check for abstract methods as well | |
871 if (method->is_abstract()) { | |
872 // new default: 6531596 | |
873 if (ReflectionWrapResolutionErrors) { | |
874 ResourceMark rm(THREAD); | |
875 Handle h_origexception = Exceptions::new_exception(THREAD, | |
876 vmSymbols::java_lang_AbstractMethodError(), | |
877 methodOopDesc::name_and_sig_as_C_string(Klass::cast(target_klass()), | |
878 method->name(), | |
879 method->signature())); | |
880 JavaCallArguments args(h_origexception); | |
881 THROW_ARG_0(vmSymbolHandles::java_lang_reflect_InvocationTargetException(), | |
882 vmSymbolHandles::throwable_void_signature(), | |
883 &args); | |
884 } else { | |
885 ResourceMark rm(THREAD); | |
886 THROW_MSG_0(vmSymbols::java_lang_AbstractMethodError(), | |
887 methodOopDesc::name_and_sig_as_C_string(Klass::cast(target_klass()), | |
888 method->name(), | |
889 method->signature())); | |
890 } | |
891 } | |
892 } | |
893 } | |
894 } | |
895 } | |
896 | |
897 // I believe this is a ShouldNotGetHere case which requires | |
898 // an internal vtable bug. If you ever get this please let Karen know. | |
899 if (method.is_null()) { | |
900 ResourceMark rm(THREAD); | |
901 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
902 methodOopDesc::name_and_sig_as_C_string(Klass::cast(klass()), | |
903 reflected_method->name(), | |
904 reflected_method->signature())); | |
905 } | |
906 | |
907 // In the JDK 1.4 reflection implementation, the security check is | |
908 // done at the Java level | |
909 if (!(JDK_Version::is_gte_jdk14x_version() && UseNewReflection)) { | |
910 | |
911 // Access checking (unless overridden by Method) | |
912 if (!override) { | |
913 if (!(klass->is_public() && reflected_method->is_public())) { | |
914 bool access = Reflection::reflect_check_access(klass(), reflected_method->access_flags(), target_klass(), is_method_invoke, CHECK_NULL); | |
915 if (!access) { | |
916 return NULL; // exception | |
917 } | |
918 } | |
919 } | |
920 | |
921 } // !(Universe::is_gte_jdk14x_version() && UseNewReflection) | |
922 | |
923 assert(ptypes->is_objArray(), "just checking"); | |
924 int args_len = args.is_null() ? 0 : args->length(); | |
925 // Check number of arguments | |
926 if (ptypes->length() != args_len) { | |
927 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "wrong number of arguments"); | |
928 } | |
929 | |
930 // Create object to contain parameters for the JavaCall | |
931 JavaCallArguments java_args(method->size_of_parameters()); | |
932 | |
933 if (!is_static) { | |
934 java_args.push_oop(receiver); | |
935 } | |
936 | |
937 for (int i = 0; i < args_len; i++) { | |
938 oop type_mirror = ptypes->obj_at(i); | |
939 oop arg = args->obj_at(i); | |
940 if (java_lang_Class::is_primitive(type_mirror)) { | |
941 jvalue value; | |
942 BasicType ptype = basic_type_mirror_to_basic_type(type_mirror, CHECK_NULL); | |
943 BasicType atype = unbox_for_primitive(arg, &value, CHECK_NULL); | |
944 if (ptype != atype) { | |
945 widen(&value, atype, ptype, CHECK_NULL); | |
946 } | |
947 switch (ptype) { | |
948 case T_BOOLEAN: java_args.push_int(value.z); break; | |
949 case T_CHAR: java_args.push_int(value.c); break; | |
950 case T_BYTE: java_args.push_int(value.b); break; | |
951 case T_SHORT: java_args.push_int(value.s); break; | |
952 case T_INT: java_args.push_int(value.i); break; | |
953 case T_LONG: java_args.push_long(value.j); break; | |
954 case T_FLOAT: java_args.push_float(value.f); break; | |
955 case T_DOUBLE: java_args.push_double(value.d); break; | |
956 default: | |
957 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
958 } | |
959 } else { | |
960 if (arg != NULL) { | |
961 klassOop k = java_lang_Class::as_klassOop(type_mirror); | |
962 if (!arg->is_a(k)) { | |
963 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
964 } | |
965 } | |
966 Handle arg_handle(THREAD, arg); // Create handle for argument | |
967 java_args.push_oop(arg_handle); // Push handle | |
968 } | |
969 } | |
970 | |
971 assert(java_args.size_of_parameters() == method->size_of_parameters(), "just checking"); | |
972 | |
973 // All oops (including receiver) is passed in as Handles. An potential oop is returned as an | |
974 // oop (i.e., NOT as an handle) | |
975 JavaValue result(rtype); | |
976 JavaCalls::call(&result, method, &java_args, THREAD); | |
977 | |
978 if (HAS_PENDING_EXCEPTION) { | |
979 // Method threw an exception; wrap it in an InvocationTargetException | |
980 oop target_exception = PENDING_EXCEPTION; | |
981 CLEAR_PENDING_EXCEPTION; | |
982 JavaCallArguments args(Handle(THREAD, target_exception)); | |
983 THROW_ARG_0(vmSymbolHandles::java_lang_reflect_InvocationTargetException(), | |
984 vmSymbolHandles::throwable_void_signature(), | |
985 &args); | |
986 } else { | |
987 if (rtype == T_BOOLEAN || rtype == T_BYTE || rtype == T_CHAR || rtype == T_SHORT) | |
988 narrow((jvalue*) result.get_value_addr(), rtype, CHECK_NULL); | |
989 return box((jvalue*) result.get_value_addr(), rtype, CHECK_NULL); | |
990 } | |
991 } | |
992 | |
993 | |
994 void Reflection::narrow(jvalue* value, BasicType narrow_type, TRAPS) { | |
995 switch (narrow_type) { | |
996 case T_BOOLEAN: | |
997 value->z = (jboolean) value->i; | |
998 return; | |
999 case T_BYTE: | |
1000 value->b = (jbyte) value->i; | |
1001 return; | |
1002 case T_CHAR: | |
1003 value->c = (jchar) value->i; | |
1004 return; | |
1005 case T_SHORT: | |
1006 value->s = (jshort) value->i; | |
1007 return; | |
1008 default: | |
1009 break; // fail | |
1010 } | |
1011 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
1012 } | |
1013 | |
1014 | |
1015 BasicType Reflection::basic_type_mirror_to_basic_type(oop basic_type_mirror, TRAPS) { | |
1016 assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking"); | |
1017 return java_lang_Class::primitive_type(basic_type_mirror); | |
1018 } | |
1019 | |
1020 | |
1021 bool Reflection::match_parameter_types(methodHandle method, objArrayHandle types, int parameter_count, TRAPS) { | |
1022 int types_len = types.is_null() ? 0 : types->length(); | |
1023 if (types_len != parameter_count) return false; | |
1024 if (parameter_count > 0) { | |
1025 objArrayHandle method_types = get_parameter_types(method, parameter_count, NULL, CHECK_false); | |
1026 for (int index = 0; index < parameter_count; index++) { | |
1027 if (types->obj_at(index) != method_types->obj_at(index)) { | |
1028 return false; | |
1029 } | |
1030 } | |
1031 } | |
1032 return true; | |
1033 } | |
1034 | |
1035 | |
1036 oop Reflection::new_field(FieldStream* st, TRAPS) { | |
1037 symbolHandle field_name(THREAD, st->name()); | |
1038 Handle name = java_lang_String::create_from_symbol(field_name, CHECK_NULL); | |
1039 symbolHandle signature(THREAD, st->signature()); | |
1040 Handle type = new_type(signature, st->klass(), CHECK_NULL); | |
1041 Handle rh = java_lang_reflect_Field::create(CHECK_NULL); | |
1042 oop result = rh(); | |
1043 | |
1044 java_lang_reflect_Field::set_clazz(result, st->klass()->java_mirror()); | |
1045 java_lang_reflect_Field::set_slot(result, st->index()); | |
1046 java_lang_reflect_Field::set_name(result, name()); | |
1047 java_lang_reflect_Field::set_type(result, type()); | |
1048 // Note the ACC_ANNOTATION bit, which is a per-class access flag, is never set here. | |
1049 java_lang_reflect_Field::set_modifiers(result, st->access_flags().as_int() & JVM_RECOGNIZED_FIELD_MODIFIERS); | |
1050 java_lang_reflect_Field::set_override(result, false); | |
1051 return result; | |
1052 } | |
1053 | |
1054 | |
1055 bool Reflection::resolve_field(Handle field_mirror, Handle& receiver, fieldDescriptor* fd, bool check_final, TRAPS) { | |
1056 if (field_mirror.is_null()) { | |
1057 THROW_(vmSymbols::java_lang_NullPointerException(), false); | |
1058 } | |
1059 | |
1060 instanceKlassHandle klass (THREAD, java_lang_Class::as_klassOop(java_lang_reflect_Field::clazz(field_mirror()))); | |
1061 int slot = java_lang_reflect_Field::slot(field_mirror()); | |
1062 | |
1063 // Ensure klass is initialized | |
1064 klass->initialize(CHECK_false); | |
1065 fd->initialize(klass(), slot); | |
1066 | |
1067 bool is_static = fd->is_static(); | |
1068 KlassHandle receiver_klass; | |
1069 | |
1070 if (is_static) { | |
1071 receiver = KlassHandle(THREAD, klass()); | |
1072 receiver_klass = klass; | |
1073 } else { | |
1074 // Check object is a non-null instance of declaring class | |
1075 if (receiver.is_null()) { | |
1076 THROW_(vmSymbols::java_lang_NullPointerException(), false); | |
1077 } | |
1078 if (!receiver->is_a(klass())) { | |
1079 THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), "object is not an instance of declaring class", false); | |
1080 } | |
1081 receiver_klass = KlassHandle(THREAD, receiver->klass()); | |
1082 } | |
1083 | |
1084 // Access checking (unless overridden by Field) | |
1085 if (!java_lang_reflect_Field::override(field_mirror())) { | |
1086 if (!(klass->is_public() && fd->is_public())) { | |
1087 bool access_check = reflect_check_access(klass(), fd->access_flags(), receiver_klass(), false, CHECK_false); | |
1088 if (!access_check) { | |
1089 return false; // exception | |
1090 } | |
1091 } | |
1092 } | |
1093 | |
1094 if (check_final && fd->is_final()) { | |
1095 // In 1.3 we always throw an error when attempting to set a final field. | |
1096 // In 1.2.x, this was allowed in the override bit was set by calling Field.setAccessible(true). | |
1097 // We currently maintain backwards compatibility. See bug 4250960. | |
1098 bool strict_final_check = !JDK_Version::is_jdk12x_version(); | |
1099 if (strict_final_check || !java_lang_reflect_Field::override(field_mirror())) { | |
1100 THROW_MSG_(vmSymbols::java_lang_IllegalAccessException(), "field is final", false); | |
1101 } | |
1102 } | |
1103 return true; | |
1104 } | |
1105 | |
1106 | |
1107 BasicType Reflection::field_get(jvalue* value, fieldDescriptor* fd, Handle receiver) { | |
1108 BasicType field_type = fd->field_type(); | |
1109 int offset = fd->offset(); | |
1110 switch (field_type) { | |
1111 case T_BOOLEAN: | |
1112 value->z = receiver->bool_field(offset); | |
1113 break; | |
1114 case T_CHAR: | |
1115 value->c = receiver->char_field(offset); | |
1116 break; | |
1117 case T_FLOAT: | |
1118 value->f = receiver->float_field(offset); | |
1119 break; | |
1120 case T_DOUBLE: | |
1121 value->d = receiver->double_field(offset); | |
1122 break; | |
1123 case T_BYTE: | |
1124 value->b = receiver->byte_field(offset); | |
1125 break; | |
1126 case T_SHORT: | |
1127 value->s = receiver->short_field(offset); | |
1128 break; | |
1129 case T_INT: | |
1130 value->i = receiver->int_field(offset); | |
1131 break; | |
1132 case T_LONG: | |
1133 value->j = receiver->long_field(offset); | |
1134 break; | |
1135 case T_OBJECT: | |
1136 case T_ARRAY: | |
1137 value->l = (jobject) receiver->obj_field(offset); | |
1138 break; | |
1139 default: | |
1140 return T_ILLEGAL; | |
1141 } | |
1142 return field_type; | |
1143 } | |
1144 | |
1145 | |
1146 void Reflection::field_set(jvalue* value, fieldDescriptor* fd, Handle receiver, BasicType value_type, TRAPS) { | |
1147 BasicType field_type = fd->field_type(); | |
1148 if (field_type != value_type) { | |
1149 widen(value, value_type, field_type, CHECK); | |
1150 } | |
1151 | |
1152 int offset = fd->offset(); | |
1153 switch (field_type) { | |
1154 case T_BOOLEAN: | |
1155 receiver->bool_field_put(offset, value->z); | |
1156 break; | |
1157 case T_CHAR: | |
1158 receiver->char_field_put(offset, value->c); | |
1159 break; | |
1160 case T_FLOAT: | |
1161 receiver->float_field_put(offset, value->f); | |
1162 break; | |
1163 case T_DOUBLE: | |
1164 receiver->double_field_put(offset, value->d); | |
1165 break; | |
1166 case T_BYTE: | |
1167 receiver->byte_field_put(offset, value->b); | |
1168 break; | |
1169 case T_SHORT: | |
1170 receiver->short_field_put(offset, value->s); | |
1171 break; | |
1172 case T_INT: | |
1173 receiver->int_field_put(offset, value->i); | |
1174 break; | |
1175 case T_LONG: | |
1176 receiver->long_field_put(offset, value->j); | |
1177 break; | |
1178 case T_OBJECT: | |
1179 case T_ARRAY: { | |
1180 Handle obj(THREAD, (oop) value->l); | |
1181 if (obj.not_null()) { | |
1182 symbolHandle signature(THREAD, fd->signature()); | |
1183 Handle loader (THREAD, fd->loader()); | |
1184 Handle protect (THREAD, Klass::cast(fd->field_holder())->protection_domain()); | |
1185 klassOop k = SystemDictionary::resolve_or_fail(signature, loader, protect, true, CHECK); // may block | |
1186 if (!obj->is_a(k)) { | |
1187 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "field type mismatch"); | |
1188 } | |
1189 } | |
1190 receiver->obj_field_put(offset, obj()); | |
1191 break; | |
1192 } | |
1193 default: | |
1194 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "field type mismatch"); | |
1195 } | |
1196 } | |
1197 | |
1198 | |
1199 oop Reflection::reflect_field(oop mirror, symbolOop field_name, jint which, TRAPS) { | |
1200 // Exclude primitive types and array types | |
1201 if (java_lang_Class::is_primitive(mirror)) return NULL; | |
1202 if (Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array()) return NULL; | |
1203 | |
1204 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(mirror)); | |
1205 bool local_fields_only = (which == DECLARED); | |
1206 | |
1207 // Ensure class is linked | |
1208 k->link_class(CHECK_NULL); | |
1209 | |
1210 // Search class and interface fields | |
1211 for (FieldStream st(k, local_fields_only, false); !st.eos(); st.next()) { | |
1212 if (st.name() == field_name) { | |
1213 if (local_fields_only || st.access_flags().is_public()) { | |
1214 return new_field(&st, THREAD); | |
1215 } | |
1216 } | |
1217 } | |
1218 | |
1219 return NULL; | |
1220 } | |
1221 | |
1222 | |
1223 objArrayOop Reflection::reflect_fields(oop mirror, jint which, TRAPS) { | |
1224 // Exclude primitive types and array types | |
1225 if (java_lang_Class::is_primitive(mirror) | |
1226 || Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array()) { | |
1227 symbolHandle name = vmSymbolHandles::java_lang_reflect_Field(); | |
1228 klassOop klass = SystemDictionary::resolve_or_fail(name, true, CHECK_NULL); | |
1229 return oopFactory::new_objArray(klass, 0, CHECK_NULL); // Return empty array | |
1230 } | |
1231 | |
1232 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(mirror)); | |
1233 | |
1234 // Ensure class is linked | |
1235 k->link_class(CHECK_NULL); | |
1236 | |
1237 bool local_fields_only = (which == DECLARED); | |
1238 int count = 0; | |
1239 { // Compute fields count for class and interface fields | |
1240 for (FieldStream st(k, local_fields_only, false); !st.eos(); st.next()) { | |
1241 if (local_fields_only || st.access_flags().is_public()) { | |
1242 count++; | |
1243 } | |
1244 } | |
1245 } | |
1246 | |
1247 // Allocate result | |
1248 symbolHandle name = vmSymbolHandles::java_lang_reflect_Field(); | |
1249 klassOop klass = SystemDictionary::resolve_or_fail(name, true, CHECK_NULL); | |
1250 objArrayOop r = oopFactory::new_objArray(klass, count, CHECK_NULL); | |
1251 objArrayHandle result (THREAD, r); | |
1252 | |
1253 // Fill in results backwards | |
1254 { | |
1255 for (FieldStream st(k, local_fields_only, false); !st.eos(); st.next()) { | |
1256 if (local_fields_only || st.access_flags().is_public()) { | |
1257 oop field = new_field(&st, CHECK_NULL); | |
1258 result->obj_at_put(--count, field); | |
1259 } | |
1260 } | |
1261 assert(count == 0, "just checking"); | |
1262 } | |
1263 return result(); | |
1264 } | |
1265 | |
1266 | |
1267 oop Reflection::reflect_method(oop mirror, symbolHandle method_name, objArrayHandle types, jint which, TRAPS) { | |
1268 if (java_lang_Class::is_primitive(mirror)) return NULL; | |
1269 klassOop klass = java_lang_Class::as_klassOop(mirror); | |
1270 if (Klass::cast(klass)->oop_is_array() && which == MEMBER_DECLARED) return NULL; | |
1271 | |
1272 if (Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array()) { | |
1273 klass = SystemDictionary::object_klass(); | |
1274 } | |
1275 instanceKlassHandle h_k(THREAD, klass); | |
1276 | |
1277 // Ensure klass is linked (need not be initialized) | |
1278 h_k->link_class(CHECK_NULL); | |
1279 | |
1280 // For interfaces include static initializers under jdk1.2.x (since classic does that) | |
1281 bool include_clinit = JDK_Version::is_jdk12x_version() && h_k->is_interface(); | |
1282 | |
1283 switch (which) { | |
1284 case MEMBER_PUBLIC: | |
1285 // First the public non-static methods (works if method holder is an interface) | |
1286 // Note that we can ignore checks for overridden methods, since we go up the hierarchy. | |
1287 { | |
1288 for (MethodStream st(h_k, false, false); !st.eos(); st.next()) { | |
1289 methodHandle m(THREAD, st.method()); | |
1290 // For interfaces include static initializers since classic does that! | |
1291 if (method_name() == m->name() && (include_clinit || (m->is_public() && !m->is_static() && !m->is_initializer()))) { | |
1292 symbolHandle signature(THREAD, m->signature()); | |
1293 bool parameter_match = match_parameter_types(m, types, ArgumentCount(signature).size(), CHECK_NULL); | |
1294 if (parameter_match) { | |
1295 return new_method(m, false, false, THREAD); | |
1296 } | |
1297 } | |
1298 } | |
1299 } | |
1300 // Then the public static methods (works if method holder is an interface) | |
1301 { | |
1302 for (MethodStream st(h_k, false, false); !st.eos(); st.next()) { | |
1303 methodHandle m(THREAD, st.method()); | |
1304 if (method_name() == m->name() && m->is_public() && m->is_static() && !m->is_initializer()) { | |
1305 symbolHandle signature(THREAD, m->signature()); | |
1306 bool parameter_match = match_parameter_types(m, types, ArgumentCount(signature).size(), CHECK_NULL); | |
1307 if (parameter_match) { | |
1308 return new_method(m, false, false, THREAD); | |
1309 } | |
1310 } | |
1311 } | |
1312 } | |
1313 break; | |
1314 case MEMBER_DECLARED: | |
1315 // All local methods | |
1316 { | |
1317 for (MethodStream st(h_k, true, true); !st.eos(); st.next()) { | |
1318 methodHandle m(THREAD, st.method()); | |
1319 if (method_name() == m->name() && !m->is_initializer()) { | |
1320 symbolHandle signature(THREAD, m->signature()); | |
1321 bool parameter_match = match_parameter_types(m, types, ArgumentCount(signature).size(), CHECK_NULL); | |
1322 if (parameter_match) { | |
1323 return new_method(m, false, false, THREAD); | |
1324 } | |
1325 } | |
1326 } | |
1327 } | |
1328 break; | |
1329 default: | |
1330 break; | |
1331 } | |
1332 return NULL; | |
1333 } | |
1334 | |
1335 | |
1336 objArrayOop Reflection::reflect_methods(oop mirror, jint which, TRAPS) { | |
1337 // Exclude primitive types | |
1338 if (java_lang_Class::is_primitive(mirror) || | |
1339 (Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array() && (which == MEMBER_DECLARED))) { | |
1340 klassOop klass = SystemDictionary::reflect_method_klass(); | |
1341 return oopFactory::new_objArray(klass, 0, CHECK_NULL); // Return empty array | |
1342 } | |
1343 | |
1344 klassOop klass = java_lang_Class::as_klassOop(mirror); | |
1345 if (Klass::cast(java_lang_Class::as_klassOop(mirror))->oop_is_array()) { | |
1346 klass = SystemDictionary::object_klass(); | |
1347 } | |
1348 instanceKlassHandle h_k(THREAD, klass); | |
1349 | |
1350 // Ensure klass is linked (need not be initialized) | |
1351 h_k->link_class(CHECK_NULL); | |
1352 | |
1353 // We search the (super)interfaces only if h_k is an interface itself | |
1354 bool is_interface = h_k->is_interface(); | |
1355 | |
1356 // For interfaces include static initializers under jdk1.2.x (since classic does that) | |
1357 bool include_clinit = JDK_Version::is_jdk12x_version() && is_interface; | |
1358 | |
1359 switch (which) { | |
1360 case MEMBER_PUBLIC: | |
1361 { | |
1362 | |
1363 // Count public methods (non-static and static) | |
1364 int count = 0; | |
1365 { | |
1366 for (MethodStream st(h_k, false, false); !st.eos(); st.next()) { | |
1367 methodOop m = st.method(); | |
1368 // For interfaces include static initializers since classic does that! | |
1369 if (include_clinit || (!m->is_initializer() && m->is_public() && !m->is_overridden_in(h_k()))) { | |
1370 count++; | |
1371 } | |
1372 } | |
1373 } | |
1374 | |
1375 // Allocate result | |
1376 klassOop klass = SystemDictionary::reflect_method_klass(); | |
1377 objArrayOop r = oopFactory::new_objArray(klass, count, CHECK_NULL); | |
1378 objArrayHandle h_result (THREAD, r); | |
1379 | |
1380 // Fill in results backwards | |
1381 { | |
1382 // First the non-static public methods | |
1383 for (MethodStream st(h_k, false, false); !st.eos(); st.next()) { | |
1384 methodHandle m (THREAD, st.method()); | |
1385 if (!m->is_static() && !m->is_initializer() && m->is_public() && !m->is_overridden_in(h_k())) { | |
1386 oop method = new_method(m, false, false, CHECK_NULL); | |
1387 if (method == NULL) { | |
1388 return NULL; | |
1389 } else { | |
1390 h_result->obj_at_put(--count, method); | |
1391 } | |
1392 } | |
1393 } | |
1394 } | |
1395 { | |
1396 // Then the static public methods | |
1397 for (MethodStream st(h_k, false, !is_interface); !st.eos(); st.next()) { | |
1398 methodHandle m (THREAD, st.method()); | |
1399 if (m->is_static() && (include_clinit || (!m->is_initializer()) && m->is_public() && !m->is_overridden_in(h_k()))) { | |
1400 oop method = new_method(m, false, false, CHECK_NULL); | |
1401 if (method == NULL) { | |
1402 return NULL; | |
1403 } else { | |
1404 h_result->obj_at_put(--count, method); | |
1405 } | |
1406 } | |
1407 } | |
1408 } | |
1409 | |
1410 assert(count == 0, "just checking"); | |
1411 return h_result(); | |
1412 } | |
1413 | |
1414 case MEMBER_DECLARED: | |
1415 { | |
1416 // Count all methods | |
1417 int count = 0; | |
1418 { | |
1419 for (MethodStream st(h_k, true, !is_interface); !st.eos(); st.next()) { | |
1420 methodOop m = st.method(); | |
1421 if (!m->is_initializer()) { | |
1422 count++; | |
1423 } | |
1424 } | |
1425 } | |
1426 // Allocate result | |
1427 klassOop klass = SystemDictionary::reflect_method_klass(); | |
1428 objArrayOop r = oopFactory::new_objArray(klass, count, CHECK_NULL); | |
1429 objArrayHandle h_result (THREAD, r); | |
1430 | |
1431 // Fill in results backwards | |
1432 { | |
1433 for (MethodStream st(h_k, true, true); !st.eos(); st.next()) { | |
1434 methodHandle m (THREAD, st.method()); | |
1435 if (!m->is_initializer()) { | |
1436 oop method = new_method(m, false, false, CHECK_NULL); | |
1437 if (method == NULL) { | |
1438 return NULL; | |
1439 } else { | |
1440 h_result->obj_at_put(--count, method); | |
1441 } | |
1442 } | |
1443 } | |
1444 } | |
1445 assert(count == 0, "just checking"); | |
1446 return h_result(); | |
1447 } | |
1448 } | |
1449 ShouldNotReachHere(); | |
1450 return NULL; | |
1451 } | |
1452 | |
1453 | |
1454 oop Reflection::reflect_constructor(oop mirror, objArrayHandle types, jint which, TRAPS) { | |
1455 | |
1456 // Exclude primitive, interface and array types | |
1457 bool prim = java_lang_Class::is_primitive(mirror); | |
1458 Klass* klass = prim ? NULL : Klass::cast(java_lang_Class::as_klassOop(mirror)); | |
1459 if (prim || klass->is_interface() || klass->oop_is_array()) return NULL; | |
1460 | |
1461 // Must be instance klass | |
1462 instanceKlassHandle h_k(THREAD, java_lang_Class::as_klassOop(mirror)); | |
1463 | |
1464 // Ensure klass is linked (need not be initialized) | |
1465 h_k->link_class(CHECK_NULL); | |
1466 | |
1467 bool local_only = (which == MEMBER_DECLARED); | |
1468 for (MethodStream st(h_k, true, true); !st.eos(); st.next()) { | |
1469 methodHandle m(THREAD, st.method()); | |
1470 if (m->name() == vmSymbols::object_initializer_name() && (local_only || m->is_public())) { | |
1471 symbolHandle signature(THREAD, m->signature()); | |
1472 bool parameter_match = match_parameter_types(m, types, ArgumentCount(signature).size(), CHECK_NULL); | |
1473 if (parameter_match) { | |
1474 return new_constructor(m, THREAD); | |
1475 } | |
1476 } | |
1477 } | |
1478 | |
1479 return NULL; | |
1480 } | |
1481 | |
1482 | |
1483 objArrayOop Reflection::reflect_constructors(oop mirror, jint which, TRAPS) { | |
1484 // Exclude primitive, interface and array types | |
1485 bool prim = java_lang_Class::is_primitive(mirror); | |
1486 Klass* k = prim ? NULL : Klass::cast(java_lang_Class::as_klassOop(mirror)); | |
1487 if (prim || k->is_interface() || k->oop_is_array()) { | |
1488 return oopFactory::new_objArray(SystemDictionary::reflect_constructor_klass(), 0, CHECK_NULL); // Return empty array | |
1489 } | |
1490 | |
1491 // Must be instanceKlass at this point | |
1492 instanceKlassHandle h_k(THREAD, java_lang_Class::as_klassOop(mirror)); | |
1493 | |
1494 // Ensure klass is linked (need not be initialized) | |
1495 h_k->link_class(CHECK_NULL); | |
1496 | |
1497 bool local_only = (which == MEMBER_DECLARED); | |
1498 int count = 0; | |
1499 { | |
1500 for (MethodStream st(h_k, true, true); !st.eos(); st.next()) { | |
1501 methodOop m = st.method(); | |
1502 if (m->name() == vmSymbols::object_initializer_name() && (local_only || m->is_public())) { | |
1503 count++; | |
1504 } | |
1505 } | |
1506 } | |
1507 | |
1508 // Allocate result | |
1509 symbolHandle name = vmSymbolHandles::java_lang_reflect_Constructor(); | |
1510 klassOop klass = SystemDictionary::resolve_or_fail(name, true, CHECK_NULL); | |
1511 objArrayOop r = oopFactory::new_objArray(klass, count, CHECK_NULL); | |
1512 objArrayHandle h_result (THREAD, r); | |
1513 | |
1514 // Fill in results backwards | |
1515 { | |
1516 for (MethodStream st(h_k, true, true); !st.eos(); st.next()) { | |
1517 methodHandle m (THREAD, st.method()); | |
1518 if (m->name() == vmSymbols::object_initializer_name() && (local_only || m->is_public())) { | |
1519 oop constr = new_constructor(m, CHECK_NULL); | |
1520 if (constr == NULL) { | |
1521 return NULL; | |
1522 } else { | |
1523 h_result->obj_at_put(--count, constr); | |
1524 } | |
1525 } | |
1526 } | |
1527 assert(count == 0, "just checking"); | |
1528 } | |
1529 return h_result(); | |
1530 } | |
1531 | |
1532 | |
1533 // This would be nicer if, say, java.lang.reflect.Method was a subclass | |
1534 // of java.lang.reflect.Constructor | |
1535 | |
1536 oop Reflection::invoke_method(oop method_mirror, Handle receiver, objArrayHandle args, TRAPS) { | |
1537 oop mirror = java_lang_reflect_Method::clazz(method_mirror); | |
1538 int slot = java_lang_reflect_Method::slot(method_mirror); | |
1539 bool override = java_lang_reflect_Method::override(method_mirror) != 0; | |
1540 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Method::parameter_types(method_mirror))); | |
1541 | |
1542 oop return_type_mirror = java_lang_reflect_Method::return_type(method_mirror); | |
1543 BasicType rtype; | |
1544 if (java_lang_Class::is_primitive(return_type_mirror)) { | |
1545 rtype = basic_type_mirror_to_basic_type(return_type_mirror, CHECK_NULL); | |
1546 } else { | |
1547 rtype = T_OBJECT; | |
1548 } | |
1549 | |
1550 instanceKlassHandle klass(THREAD, java_lang_Class::as_klassOop(mirror)); | |
51
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1551 methodOop m = klass->method_with_idnum(slot); |
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1552 if (m == NULL) { |
0 | 1553 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke"); |
1554 } | |
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1555 methodHandle method(THREAD, m); |
0 | 1556 |
1557 return invoke(klass, method, receiver, override, ptypes, rtype, args, true, THREAD); | |
1558 } | |
1559 | |
1560 | |
1561 oop Reflection::invoke_constructor(oop constructor_mirror, objArrayHandle args, TRAPS) { | |
1562 oop mirror = java_lang_reflect_Constructor::clazz(constructor_mirror); | |
1563 int slot = java_lang_reflect_Constructor::slot(constructor_mirror); | |
1564 bool override = java_lang_reflect_Constructor::override(constructor_mirror) != 0; | |
1565 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Constructor::parameter_types(constructor_mirror))); | |
1566 | |
1567 instanceKlassHandle klass(THREAD, java_lang_Class::as_klassOop(mirror)); | |
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1568 methodOop m = klass->method_with_idnum(slot); |
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1569 if (m == NULL) { |
0 | 1570 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke"); |
1571 } | |
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1572 methodHandle method(THREAD, m); |
0 | 1573 assert(method->name() == vmSymbols::object_initializer_name(), "invalid constructor"); |
1574 | |
1575 // Make sure klass gets initialize | |
1576 klass->initialize(CHECK_NULL); | |
1577 | |
1578 // Create new instance (the receiver) | |
1579 klass->check_valid_for_instantiation(false, CHECK_NULL); | |
1580 Handle receiver = klass->allocate_instance_handle(CHECK_NULL); | |
1581 | |
1582 // Ignore result from call and return receiver | |
1583 invoke(klass, method, receiver, override, ptypes, T_VOID, args, false, CHECK_NULL); | |
1584 return receiver(); | |
1585 } | |
1586 | |
1587 | |
1588 #endif /* SUPPORT_OLD_REFLECTION */ |