Mercurial > hg > truffle
annotate src/share/vm/runtime/reflection.cpp @ 14714:b602356a9cfc
additional canonicalizers for accesses and value nodes (improves number of implicit null checks)
author | Lukas Stadler <lukas.stadler@oracle.com> |
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date | Thu, 20 Mar 2014 17:15:36 +0100 |
parents | 016b6a289fc4 |
children | 4ca6dc0799b6 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/javaClasses.hpp" | |
27 #include "classfile/symbolTable.hpp" | |
28 #include "classfile/systemDictionary.hpp" | |
29 #include "classfile/verifier.hpp" | |
30 #include "classfile/vmSymbols.hpp" | |
31 #include "interpreter/linkResolver.hpp" | |
32 #include "memory/oopFactory.hpp" | |
33 #include "memory/resourceArea.hpp" | |
34 #include "memory/universe.inline.hpp" | |
35 #include "oops/instanceKlass.hpp" | |
36 #include "oops/objArrayKlass.hpp" | |
37 #include "oops/objArrayOop.hpp" | |
38 #include "prims/jvm.h" | |
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39 #include "prims/jvmtiExport.hpp" |
1972 | 40 #include "runtime/arguments.hpp" |
41 #include "runtime/handles.inline.hpp" | |
42 #include "runtime/javaCalls.hpp" | |
43 #include "runtime/reflection.hpp" | |
44 #include "runtime/reflectionUtils.hpp" | |
45 #include "runtime/signature.hpp" | |
46 #include "runtime/vframe.hpp" | |
0 | 47 |
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48 static void trace_class_resolution(Klass* to_class) { |
0 | 49 ResourceMark rm; |
50 int line_number = -1; | |
51 const char * source_file = NULL; | |
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52 Klass* caller = NULL; |
0 | 53 JavaThread* jthread = JavaThread::current(); |
54 if (jthread->has_last_Java_frame()) { | |
55 vframeStream vfst(jthread); | |
56 // skip over any frames belonging to java.lang.Class | |
57 while (!vfst.at_end() && | |
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58 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class()) { |
0 | 59 vfst.next(); |
60 } | |
61 if (!vfst.at_end()) { | |
62 // this frame is a likely suspect | |
63 caller = vfst.method()->method_holder(); | |
64 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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65 Symbol* s = vfst.method()->method_holder()->source_file_name(); |
0 | 66 if (s != NULL) { |
67 source_file = s->as_C_string(); | |
68 } | |
69 } | |
70 } | |
71 if (caller != NULL) { | |
6983 | 72 const char * from = caller->external_name(); |
73 const char * to = to_class->external_name(); | |
0 | 74 // print in a single call to reduce interleaving between threads |
75 if (source_file != NULL) { | |
76 tty->print("RESOLVE %s %s %s:%d (reflection)\n", from, to, source_file, line_number); | |
77 } else { | |
78 tty->print("RESOLVE %s %s (reflection)\n", from, to); | |
79 } | |
80 } | |
81 } | |
82 | |
83 | |
84 oop Reflection::box(jvalue* value, BasicType type, TRAPS) { | |
85 if (type == T_VOID) { | |
86 return NULL; | |
87 } | |
88 if (type == T_OBJECT || type == T_ARRAY) { | |
89 // regular objects are not boxed | |
90 return (oop) value->l; | |
91 } | |
92 oop result = java_lang_boxing_object::create(type, value, CHECK_NULL); | |
93 if (result == NULL) { | |
94 THROW_(vmSymbols::java_lang_IllegalArgumentException(), result); | |
95 } | |
96 return result; | |
97 } | |
98 | |
99 | |
100 BasicType Reflection::unbox_for_primitive(oop box, jvalue* value, TRAPS) { | |
101 if (box == NULL) { | |
102 THROW_(vmSymbols::java_lang_IllegalArgumentException(), T_ILLEGAL); | |
103 } | |
104 return java_lang_boxing_object::get_value(box, value); | |
105 } | |
106 | |
107 BasicType Reflection::unbox_for_regular_object(oop box, jvalue* value) { | |
108 // Note: box is really the unboxed oop. It might even be a Short, etc.! | |
109 value->l = (jobject) box; | |
110 return T_OBJECT; | |
111 } | |
112 | |
113 | |
114 void Reflection::widen(jvalue* value, BasicType current_type, BasicType wide_type, TRAPS) { | |
115 assert(wide_type != current_type, "widen should not be called with identical types"); | |
116 switch (wide_type) { | |
117 case T_BOOLEAN: | |
118 case T_BYTE: | |
119 case T_CHAR: | |
120 break; // fail | |
121 case T_SHORT: | |
122 switch (current_type) { | |
123 case T_BYTE: | |
124 value->s = (jshort) value->b; | |
125 return; | |
126 } | |
127 break; // fail | |
128 case T_INT: | |
129 switch (current_type) { | |
130 case T_BYTE: | |
131 value->i = (jint) value->b; | |
132 return; | |
133 case T_CHAR: | |
134 value->i = (jint) value->c; | |
135 return; | |
136 case T_SHORT: | |
137 value->i = (jint) value->s; | |
138 return; | |
139 } | |
140 break; // fail | |
141 case T_LONG: | |
142 switch (current_type) { | |
143 case T_BYTE: | |
144 value->j = (jlong) value->b; | |
145 return; | |
146 case T_CHAR: | |
147 value->j = (jlong) value->c; | |
148 return; | |
149 case T_SHORT: | |
150 value->j = (jlong) value->s; | |
151 return; | |
152 case T_INT: | |
153 value->j = (jlong) value->i; | |
154 return; | |
155 } | |
156 break; // fail | |
157 case T_FLOAT: | |
158 switch (current_type) { | |
159 case T_BYTE: | |
160 value->f = (jfloat) value->b; | |
161 return; | |
162 case T_CHAR: | |
163 value->f = (jfloat) value->c; | |
164 return; | |
165 case T_SHORT: | |
166 value->f = (jfloat) value->s; | |
167 return; | |
168 case T_INT: | |
169 value->f = (jfloat) value->i; | |
170 return; | |
171 case T_LONG: | |
172 value->f = (jfloat) value->j; | |
173 return; | |
174 } | |
175 break; // fail | |
176 case T_DOUBLE: | |
177 switch (current_type) { | |
178 case T_BYTE: | |
179 value->d = (jdouble) value->b; | |
180 return; | |
181 case T_CHAR: | |
182 value->d = (jdouble) value->c; | |
183 return; | |
184 case T_SHORT: | |
185 value->d = (jdouble) value->s; | |
186 return; | |
187 case T_INT: | |
188 value->d = (jdouble) value->i; | |
189 return; | |
190 case T_FLOAT: | |
191 value->d = (jdouble) value->f; | |
192 return; | |
193 case T_LONG: | |
194 value->d = (jdouble) value->j; | |
195 return; | |
196 } | |
197 break; // fail | |
198 default: | |
199 break; // fail | |
200 } | |
201 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
202 } | |
203 | |
204 | |
205 BasicType Reflection::array_get(jvalue* value, arrayOop a, int index, TRAPS) { | |
206 if (!a->is_within_bounds(index)) { | |
207 THROW_(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), T_ILLEGAL); | |
208 } | |
209 if (a->is_objArray()) { | |
210 value->l = (jobject) objArrayOop(a)->obj_at(index); | |
211 return T_OBJECT; | |
212 } else { | |
213 assert(a->is_typeArray(), "just checking"); | |
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214 BasicType type = TypeArrayKlass::cast(a->klass())->element_type(); |
0 | 215 switch (type) { |
216 case T_BOOLEAN: | |
217 value->z = typeArrayOop(a)->bool_at(index); | |
218 break; | |
219 case T_CHAR: | |
220 value->c = typeArrayOop(a)->char_at(index); | |
221 break; | |
222 case T_FLOAT: | |
223 value->f = typeArrayOop(a)->float_at(index); | |
224 break; | |
225 case T_DOUBLE: | |
226 value->d = typeArrayOop(a)->double_at(index); | |
227 break; | |
228 case T_BYTE: | |
229 value->b = typeArrayOop(a)->byte_at(index); | |
230 break; | |
231 case T_SHORT: | |
232 value->s = typeArrayOop(a)->short_at(index); | |
233 break; | |
234 case T_INT: | |
235 value->i = typeArrayOop(a)->int_at(index); | |
236 break; | |
237 case T_LONG: | |
238 value->j = typeArrayOop(a)->long_at(index); | |
239 break; | |
240 default: | |
241 return T_ILLEGAL; | |
242 } | |
243 return type; | |
244 } | |
245 } | |
246 | |
247 | |
248 void Reflection::array_set(jvalue* value, arrayOop a, int index, BasicType value_type, TRAPS) { | |
249 if (!a->is_within_bounds(index)) { | |
250 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
251 } | |
252 if (a->is_objArray()) { | |
253 if (value_type == T_OBJECT) { | |
254 oop obj = (oop) value->l; | |
255 if (obj != NULL) { | |
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256 Klass* element_klass = ObjArrayKlass::cast(a->klass())->element_klass(); |
0 | 257 if (!obj->is_a(element_klass)) { |
258 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "array element type mismatch"); | |
259 } | |
260 } | |
261 objArrayOop(a)->obj_at_put(index, obj); | |
262 } | |
263 } else { | |
264 assert(a->is_typeArray(), "just checking"); | |
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265 BasicType array_type = TypeArrayKlass::cast(a->klass())->element_type(); |
0 | 266 if (array_type != value_type) { |
267 // The widen operation can potentially throw an exception, but cannot block, | |
268 // so typeArrayOop a is safe if the call succeeds. | |
269 widen(value, value_type, array_type, CHECK); | |
270 } | |
271 switch (array_type) { | |
272 case T_BOOLEAN: | |
273 typeArrayOop(a)->bool_at_put(index, value->z); | |
274 break; | |
275 case T_CHAR: | |
276 typeArrayOop(a)->char_at_put(index, value->c); | |
277 break; | |
278 case T_FLOAT: | |
279 typeArrayOop(a)->float_at_put(index, value->f); | |
280 break; | |
281 case T_DOUBLE: | |
282 typeArrayOop(a)->double_at_put(index, value->d); | |
283 break; | |
284 case T_BYTE: | |
285 typeArrayOop(a)->byte_at_put(index, value->b); | |
286 break; | |
287 case T_SHORT: | |
288 typeArrayOop(a)->short_at_put(index, value->s); | |
289 break; | |
290 case T_INT: | |
291 typeArrayOop(a)->int_at_put(index, value->i); | |
292 break; | |
293 case T_LONG: | |
294 typeArrayOop(a)->long_at_put(index, value->j); | |
295 break; | |
296 default: | |
297 THROW(vmSymbols::java_lang_IllegalArgumentException()); | |
298 } | |
299 } | |
300 } | |
301 | |
302 | |
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303 Klass* Reflection::basic_type_mirror_to_arrayklass(oop basic_type_mirror, TRAPS) { |
0 | 304 assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking"); |
305 BasicType type = java_lang_Class::primitive_type(basic_type_mirror); | |
306 if (type == T_VOID) { | |
307 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
308 } else { | |
309 return Universe::typeArrayKlassObj(type); | |
310 } | |
311 } | |
312 | |
313 | |
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314 oop Reflection:: basic_type_arrayklass_to_mirror(Klass* basic_type_arrayklass, TRAPS) { |
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315 BasicType type = TypeArrayKlass::cast(basic_type_arrayklass)->element_type(); |
0 | 316 return Universe::java_mirror(type); |
317 } | |
318 | |
319 | |
320 arrayOop Reflection::reflect_new_array(oop element_mirror, jint length, TRAPS) { | |
321 if (element_mirror == NULL) { | |
322 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
323 } | |
324 if (length < 0) { | |
325 THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); | |
326 } | |
327 if (java_lang_Class::is_primitive(element_mirror)) { | |
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328 Klass* tak = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL); |
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329 return TypeArrayKlass::cast(tak)->allocate(length, THREAD); |
0 | 330 } else { |
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331 Klass* k = java_lang_Class::as_Klass(element_mirror); |
6983 | 332 if (k->oop_is_array() && ArrayKlass::cast(k)->dimension() >= MAX_DIM) { |
0 | 333 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); |
334 } | |
335 return oopFactory::new_objArray(k, length, THREAD); | |
336 } | |
337 } | |
338 | |
339 | |
340 arrayOop Reflection::reflect_new_multi_array(oop element_mirror, typeArrayOop dim_array, TRAPS) { | |
341 assert(dim_array->is_typeArray(), "just checking"); | |
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342 assert(TypeArrayKlass::cast(dim_array->klass())->element_type() == T_INT, "just checking"); |
0 | 343 |
344 if (element_mirror == NULL) { | |
345 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
346 } | |
347 | |
348 int len = dim_array->length(); | |
349 if (len <= 0 || len > MAX_DIM) { | |
350 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
351 } | |
352 | |
353 jint dimensions[MAX_DIM]; // C array copy of intArrayOop | |
354 for (int i = 0; i < len; i++) { | |
355 int d = dim_array->int_at(i); | |
356 if (d < 0) { | |
357 THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); | |
358 } | |
359 dimensions[i] = d; | |
360 } | |
361 | |
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362 Klass* klass; |
0 | 363 int dim = len; |
364 if (java_lang_Class::is_primitive(element_mirror)) { | |
365 klass = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL); | |
366 } else { | |
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367 klass = java_lang_Class::as_Klass(element_mirror); |
6983 | 368 if (klass->oop_is_array()) { |
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369 int k_dim = ArrayKlass::cast(klass)->dimension(); |
0 | 370 if (k_dim + len > MAX_DIM) { |
371 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
372 } | |
373 dim += k_dim; | |
374 } | |
375 } | |
6983 | 376 klass = klass->array_klass(dim, CHECK_NULL); |
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377 oop obj = ArrayKlass::cast(klass)->multi_allocate(len, dimensions, CHECK_NULL); |
0 | 378 assert(obj->is_array(), "just checking"); |
379 return arrayOop(obj); | |
380 } | |
381 | |
382 | |
383 oop Reflection::array_component_type(oop mirror, TRAPS) { | |
384 if (java_lang_Class::is_primitive(mirror)) { | |
385 return NULL; | |
386 } | |
387 | |
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388 Klass* klass = java_lang_Class::as_Klass(mirror); |
6983 | 389 if (!klass->oop_is_array()) { |
0 | 390 return NULL; |
391 } | |
392 | |
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393 oop result = ArrayKlass::cast(klass)->component_mirror(); |
0 | 394 #ifdef ASSERT |
395 oop result2 = NULL; | |
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396 if (ArrayKlass::cast(klass)->dimension() == 1) { |
6983 | 397 if (klass->oop_is_typeArray()) { |
0 | 398 result2 = basic_type_arrayklass_to_mirror(klass, CHECK_NULL); |
399 } else { | |
6983 | 400 result2 = ObjArrayKlass::cast(klass)->element_klass()->java_mirror(); |
0 | 401 } |
402 } else { | |
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403 Klass* lower_dim = ArrayKlass::cast(klass)->lower_dimension(); |
6983 | 404 assert(lower_dim->oop_is_array(), "just checking"); |
405 result2 = lower_dim->java_mirror(); | |
0 | 406 } |
407 assert(result == result2, "results must be consistent"); | |
408 #endif //ASSERT | |
409 return result; | |
410 } | |
411 | |
412 | |
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413 bool Reflection::reflect_check_access(Klass* field_class, AccessFlags acc, Klass* target_class, bool is_method_invoke, TRAPS) { |
0 | 414 // field_class : declaring class |
415 // acc : declared field access | |
416 // target_class : for protected | |
417 | |
418 // Check if field or method is accessible to client. Throw an | |
419 // IllegalAccessException and return false if not. | |
420 | |
421 // The "client" is the class associated with the nearest real frame | |
422 // getCallerClass already skips Method.invoke frames, so pass 0 in | |
423 // that case (same as classic). | |
424 ResourceMark rm(THREAD); | |
425 assert(THREAD->is_Java_thread(), "sanity check"); | |
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426 Klass* client_class = ((JavaThread *)THREAD)->security_get_caller_class(is_method_invoke ? 0 : 1); |
0 | 427 |
428 if (client_class != field_class) { | |
429 if (!verify_class_access(client_class, field_class, false) | |
430 || !verify_field_access(client_class, | |
431 field_class, | |
432 field_class, | |
433 acc, | |
434 false)) { | |
435 THROW_(vmSymbols::java_lang_IllegalAccessException(), false); | |
436 } | |
437 } | |
438 | |
439 // Additional test for protected members: JLS 6.6.2 | |
440 | |
441 if (acc.is_protected()) { | |
442 if (target_class != client_class) { | |
443 if (!is_same_class_package(client_class, field_class)) { | |
6983 | 444 if (!target_class->is_subclass_of(client_class)) { |
0 | 445 THROW_(vmSymbols::java_lang_IllegalAccessException(), false); |
446 } | |
447 } | |
448 } | |
449 } | |
450 | |
451 // Passed all tests | |
452 return true; | |
453 } | |
454 | |
455 | |
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456 bool Reflection::verify_class_access(Klass* current_class, Klass* new_class, bool classloader_only) { |
0 | 457 // Verify that current_class can access new_class. If the classloader_only |
458 // flag is set, we automatically allow any accesses in which current_class | |
459 // doesn't have a classloader. | |
460 if ((current_class == NULL) || | |
461 (current_class == new_class) || | |
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462 (new_class->is_public()) || |
0 | 463 is_same_class_package(current_class, new_class)) { |
464 return true; | |
465 } | |
466 // New (1.4) reflection implementation. Allow all accesses from | |
467 // sun/reflect/MagicAccessorImpl subclasses to succeed trivially. | |
468 if ( JDK_Version::is_gte_jdk14x_version() | |
469 && UseNewReflection | |
6983 | 470 && current_class->is_subclass_of(SystemDictionary::reflect_MagicAccessorImpl_klass())) { |
0 | 471 return true; |
472 } | |
473 | |
474 return can_relax_access_check_for(current_class, new_class, classloader_only); | |
475 } | |
476 | |
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477 static bool under_host_klass(InstanceKlass* ik, Klass* host_klass) { |
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478 DEBUG_ONLY(int inf_loop_check = 1000 * 1000 * 1000); |
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479 for (;;) { |
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480 Klass* hc = (Klass*) ik->host_klass(); |
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481 if (hc == NULL) return false; |
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482 if (hc == host_klass) return true; |
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483 ik = InstanceKlass::cast(hc); |
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484 |
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485 // There's no way to make a host class loop short of patching memory. |
14309 | 486 // Therefore there cannot be a loop here unless there's another bug. |
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487 // Still, let's check for it. |
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488 assert(--inf_loop_check > 0, "no host_klass loop"); |
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489 } |
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490 } |
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491 |
0 | 492 bool Reflection::can_relax_access_check_for( |
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493 Klass* accessor, Klass* accessee, bool classloader_only) { |
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494 InstanceKlass* accessor_ik = InstanceKlass::cast(accessor); |
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495 InstanceKlass* accessee_ik = InstanceKlass::cast(accessee); |
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496 |
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497 // If either is on the other's host_klass chain, access is OK, |
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498 // because one is inside the other. |
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499 if (under_host_klass(accessor_ik, accessee) || |
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500 under_host_klass(accessee_ik, accessor)) |
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501 return true; |
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502 |
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503 if ((RelaxAccessControlCheck && |
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504 accessor_ik->major_version() < Verifier::NO_RELAX_ACCESS_CTRL_CHECK_VERSION && |
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505 accessee_ik->major_version() < Verifier::NO_RELAX_ACCESS_CTRL_CHECK_VERSION) || |
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506 (accessor_ik->major_version() < Verifier::STRICTER_ACCESS_CTRL_CHECK_VERSION && |
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507 accessee_ik->major_version() < Verifier::STRICTER_ACCESS_CTRL_CHECK_VERSION)) { |
0 | 508 return classloader_only && |
509 Verifier::relax_verify_for(accessor_ik->class_loader()) && | |
510 accessor_ik->protection_domain() == accessee_ik->protection_domain() && | |
511 accessor_ik->class_loader() == accessee_ik->class_loader(); | |
512 } else { | |
513 return false; | |
514 } | |
515 } | |
516 | |
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517 bool Reflection::verify_field_access(Klass* current_class, |
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518 Klass* resolved_class, |
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519 Klass* field_class, |
0 | 520 AccessFlags access, |
521 bool classloader_only, | |
522 bool protected_restriction) { | |
523 // Verify that current_class can access a field of field_class, where that | |
524 // field's access bits are "access". We assume that we've already verified | |
525 // that current_class can access field_class. | |
526 // | |
527 // If the classloader_only flag is set, we automatically allow any accesses | |
528 // in which current_class doesn't have a classloader. | |
529 // | |
530 // "resolved_class" is the runtime type of "field_class". Sometimes we don't | |
531 // need this distinction (e.g. if all we have is the runtime type, or during | |
532 // class file parsing when we only care about the static type); in that case | |
533 // callers should ensure that resolved_class == field_class. | |
534 // | |
535 if ((current_class == NULL) || | |
536 (current_class == field_class) || | |
537 access.is_public()) { | |
538 return true; | |
539 } | |
540 | |
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541 Klass* host_class = current_class; |
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542 while (host_class->oop_is_instance() && |
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543 InstanceKlass::cast(host_class)->is_anonymous()) { |
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544 Klass* next_host_class = InstanceKlass::cast(host_class)->host_klass(); |
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545 if (next_host_class == NULL) break; |
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546 host_class = next_host_class; |
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547 } |
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548 if (host_class == field_class) { |
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549 return true; |
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550 } |
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551 |
0 | 552 if (access.is_protected()) { |
553 if (!protected_restriction) { | |
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554 // See if current_class (or outermost host class) is a subclass of field_class |
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555 if (host_class->is_subclass_of(field_class)) { |
115 | 556 if (access.is_static() || // static fields are ok, see 6622385 |
557 current_class == resolved_class || | |
0 | 558 field_class == resolved_class || |
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559 host_class->is_subclass_of(resolved_class) || |
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560 resolved_class->is_subclass_of(host_class)) { |
0 | 561 return true; |
562 } | |
563 } | |
564 } | |
565 } | |
566 | |
567 if (!access.is_private() && is_same_class_package(current_class, field_class)) { | |
568 return true; | |
569 } | |
570 | |
571 // New (1.4) reflection implementation. Allow all accesses from | |
572 // sun/reflect/MagicAccessorImpl subclasses to succeed trivially. | |
573 if ( JDK_Version::is_gte_jdk14x_version() | |
574 && UseNewReflection | |
6983 | 575 && current_class->is_subclass_of(SystemDictionary::reflect_MagicAccessorImpl_klass())) { |
0 | 576 return true; |
577 } | |
578 | |
579 return can_relax_access_check_for( | |
580 current_class, field_class, classloader_only); | |
581 } | |
582 | |
583 | |
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584 bool Reflection::is_same_class_package(Klass* class1, Klass* class2) { |
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585 return InstanceKlass::cast(class1)->is_same_class_package(class2); |
0 | 586 } |
587 | |
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588 bool Reflection::is_same_package_member(Klass* class1, Klass* class2, TRAPS) { |
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589 return InstanceKlass::cast(class1)->is_same_package_member(class2, THREAD); |
665
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590 } |
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591 |
0 | 592 |
593 // Checks that the 'outer' klass has declared 'inner' as being an inner klass. If not, | |
594 // throw an incompatible class change exception | |
665
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595 // If inner_is_member, require the inner to be a member of the outer. |
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596 // If !inner_is_member, require the inner to be anonymous (a non-member). |
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597 // Caller is responsible for figuring out in advance which case must be true. |
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598 void Reflection::check_for_inner_class(instanceKlassHandle outer, instanceKlassHandle inner, |
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599 bool inner_is_member, TRAPS) { |
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600 InnerClassesIterator iter(outer); |
0 | 601 constantPoolHandle cp (THREAD, outer->constants()); |
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602 for (; !iter.done(); iter.next()) { |
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603 int ioff = iter.inner_class_info_index(); |
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604 int ooff = iter.outer_class_info_index(); |
0 | 605 |
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606 if (inner_is_member && ioff != 0 && ooff != 0) { |
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607 Klass* o = cp->klass_at(ooff, CHECK); |
0 | 608 if (o == outer()) { |
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609 Klass* i = cp->klass_at(ioff, CHECK); |
0 | 610 if (i == inner()) { |
611 return; | |
612 } | |
613 } | |
614 } | |
665
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615 if (!inner_is_member && ioff != 0 && ooff == 0 && |
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616 cp->klass_name_at_matches(inner, ioff)) { |
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617 Klass* i = cp->klass_at(ioff, CHECK); |
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618 if (i == inner()) { |
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619 return; |
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620 } |
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621 } |
0 | 622 } |
623 | |
624 // 'inner' not declared as an inner klass in outer | |
625 ResourceMark rm(THREAD); | |
626 Exceptions::fthrow( | |
627 THREAD_AND_LOCATION, | |
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628 vmSymbols::java_lang_IncompatibleClassChangeError(), |
0 | 629 "%s and %s disagree on InnerClasses attribute", |
630 outer->external_name(), | |
631 inner->external_name() | |
632 ); | |
633 } | |
634 | |
635 // Utility method converting a single SignatureStream element into java.lang.Class instance | |
636 | |
637 oop get_mirror_from_signature(methodHandle method, SignatureStream* ss, TRAPS) { | |
638 switch (ss->type()) { | |
639 default: | |
640 assert(ss->type() != T_VOID || ss->at_return_type(), "T_VOID should only appear as return type"); | |
641 return java_lang_Class::primitive_mirror(ss->type()); | |
642 case T_OBJECT: | |
643 case T_ARRAY: | |
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644 Symbol* name = ss->as_symbol(CHECK_NULL); |
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645 oop loader = method->method_holder()->class_loader(); |
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646 oop protection_domain = method->method_holder()->protection_domain(); |
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647 Klass* k = SystemDictionary::resolve_or_fail( |
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648 name, |
0 | 649 Handle(THREAD, loader), |
650 Handle(THREAD, protection_domain), | |
651 true, CHECK_NULL); | |
652 if (TraceClassResolution) { | |
653 trace_class_resolution(k); | |
654 } | |
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655 return k->java_mirror(); |
0 | 656 }; |
657 } | |
658 | |
659 | |
660 objArrayHandle Reflection::get_parameter_types(methodHandle method, int parameter_count, oop* return_type, TRAPS) { | |
661 // Allocate array holding parameter types (java.lang.Class instances) | |
1142 | 662 objArrayOop m = oopFactory::new_objArray(SystemDictionary::Class_klass(), parameter_count, CHECK_(objArrayHandle())); |
0 | 663 objArrayHandle mirrors (THREAD, m); |
664 int index = 0; | |
665 // Collect parameter types | |
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666 ResourceMark rm(THREAD); |
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667 Symbol* signature = method->signature(); |
0 | 668 SignatureStream ss(signature); |
669 while (!ss.at_return_type()) { | |
670 oop mirror = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle())); | |
671 mirrors->obj_at_put(index++, mirror); | |
672 ss.next(); | |
673 } | |
674 assert(index == parameter_count, "invalid parameter count"); | |
675 if (return_type != NULL) { | |
676 // Collect return type as well | |
677 assert(ss.at_return_type(), "return type should be present"); | |
678 *return_type = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle())); | |
679 } | |
680 return mirrors; | |
681 } | |
682 | |
683 objArrayHandle Reflection::get_exception_types(methodHandle method, TRAPS) { | |
684 return method->resolved_checked_exceptions(CHECK_(objArrayHandle())); | |
685 } | |
686 | |
687 | |
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688 Handle Reflection::new_type(Symbol* signature, KlassHandle k, TRAPS) { |
0 | 689 // Basic types |
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690 BasicType type = vmSymbols::signature_type(signature); |
0 | 691 if (type != T_OBJECT) { |
692 return Handle(THREAD, Universe::java_mirror(type)); | |
693 } | |
694 | |
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695 oop loader = InstanceKlass::cast(k())->class_loader(); |
6983 | 696 oop protection_domain = k()->protection_domain(); |
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697 Klass* result = SystemDictionary::resolve_or_fail(signature, |
0 | 698 Handle(THREAD, loader), |
699 Handle(THREAD, protection_domain), | |
700 true, CHECK_(Handle())); | |
701 | |
702 if (TraceClassResolution) { | |
703 trace_class_resolution(result); | |
704 } | |
705 | |
6983 | 706 oop nt = result->java_mirror(); |
0 | 707 return Handle(THREAD, nt); |
708 } | |
709 | |
710 | |
711 oop Reflection::new_method(methodHandle method, bool intern_name, bool for_constant_pool_access, TRAPS) { | |
712 // In jdk1.2.x, getMethods on an interface erroneously includes <clinit>, thus the complicated assert. | |
713 // Also allow sun.reflect.ConstantPool to refer to <clinit> methods as java.lang.reflect.Methods. | |
714 assert(!method()->is_initializer() || | |
715 (for_constant_pool_access && method()->is_static()) || | |
716 (method()->name() == vmSymbols::class_initializer_name() | |
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717 && method()->method_holder()->is_interface() && JDK_Version::is_jdk12x_version()), "should call new_constructor instead"); |
0 | 718 instanceKlassHandle holder (THREAD, method->method_holder()); |
719 int slot = method->method_idnum(); | |
720 | |
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721 Symbol* signature = method->signature(); |
0 | 722 int parameter_count = ArgumentCount(signature).size(); |
723 oop return_type_oop = NULL; | |
724 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, &return_type_oop, CHECK_NULL); | |
725 if (parameter_types.is_null() || return_type_oop == NULL) return NULL; | |
726 | |
727 Handle return_type(THREAD, return_type_oop); | |
728 | |
729 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL); | |
730 | |
731 if (exception_types.is_null()) return NULL; | |
732 | |
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733 Symbol* method_name = method->name(); |
0 | 734 Handle name; |
735 if (intern_name) { | |
736 // intern_name is only true with UseNewReflection | |
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737 oop name_oop = StringTable::intern(method_name, CHECK_NULL); |
0 | 738 name = Handle(THREAD, name_oop); |
739 } else { | |
740 name = java_lang_String::create_from_symbol(method_name, CHECK_NULL); | |
741 } | |
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742 if (name == NULL) return NULL; |
0 | 743 |
744 int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
745 | |
746 Handle mh = java_lang_reflect_Method::create(CHECK_NULL); | |
747 | |
748 java_lang_reflect_Method::set_clazz(mh(), holder->java_mirror()); | |
749 java_lang_reflect_Method::set_slot(mh(), slot); | |
750 java_lang_reflect_Method::set_name(mh(), name()); | |
751 java_lang_reflect_Method::set_return_type(mh(), return_type()); | |
752 java_lang_reflect_Method::set_parameter_types(mh(), parameter_types()); | |
753 java_lang_reflect_Method::set_exception_types(mh(), exception_types()); | |
754 java_lang_reflect_Method::set_modifiers(mh(), modifiers); | |
755 java_lang_reflect_Method::set_override(mh(), false); | |
756 if (java_lang_reflect_Method::has_signature_field() && | |
757 method->generic_signature() != NULL) { | |
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758 Symbol* gs = method->generic_signature(); |
0 | 759 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); |
760 java_lang_reflect_Method::set_signature(mh(), sig()); | |
761 } | |
762 if (java_lang_reflect_Method::has_annotations_field()) { | |
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763 typeArrayOop an_oop = Annotations::make_java_array(method->annotations(), CHECK_NULL); |
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764 java_lang_reflect_Method::set_annotations(mh(), an_oop); |
0 | 765 } |
766 if (java_lang_reflect_Method::has_parameter_annotations_field()) { | |
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767 typeArrayOop an_oop = Annotations::make_java_array(method->parameter_annotations(), CHECK_NULL); |
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768 java_lang_reflect_Method::set_parameter_annotations(mh(), an_oop); |
0 | 769 } |
770 if (java_lang_reflect_Method::has_annotation_default_field()) { | |
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771 typeArrayOop an_oop = Annotations::make_java_array(method->annotation_default(), CHECK_NULL); |
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772 java_lang_reflect_Method::set_annotation_default(mh(), an_oop); |
0 | 773 } |
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774 if (java_lang_reflect_Method::has_type_annotations_field()) { |
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775 typeArrayOop an_oop = Annotations::make_java_array(method->type_annotations(), CHECK_NULL); |
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776 java_lang_reflect_Method::set_type_annotations(mh(), an_oop); |
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777 } |
0 | 778 return mh(); |
779 } | |
780 | |
781 | |
782 oop Reflection::new_constructor(methodHandle method, TRAPS) { | |
783 assert(method()->is_initializer(), "should call new_method instead"); | |
784 | |
785 instanceKlassHandle holder (THREAD, method->method_holder()); | |
786 int slot = method->method_idnum(); | |
787 | |
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788 Symbol* signature = method->signature(); |
0 | 789 int parameter_count = ArgumentCount(signature).size(); |
790 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, NULL, CHECK_NULL); | |
791 if (parameter_types.is_null()) return NULL; | |
792 | |
793 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL); | |
794 if (exception_types.is_null()) return NULL; | |
795 | |
796 int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
797 | |
798 Handle ch = java_lang_reflect_Constructor::create(CHECK_NULL); | |
799 | |
800 java_lang_reflect_Constructor::set_clazz(ch(), holder->java_mirror()); | |
801 java_lang_reflect_Constructor::set_slot(ch(), slot); | |
802 java_lang_reflect_Constructor::set_parameter_types(ch(), parameter_types()); | |
803 java_lang_reflect_Constructor::set_exception_types(ch(), exception_types()); | |
804 java_lang_reflect_Constructor::set_modifiers(ch(), modifiers); | |
805 java_lang_reflect_Constructor::set_override(ch(), false); | |
806 if (java_lang_reflect_Constructor::has_signature_field() && | |
807 method->generic_signature() != NULL) { | |
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808 Symbol* gs = method->generic_signature(); |
0 | 809 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); |
810 java_lang_reflect_Constructor::set_signature(ch(), sig()); | |
811 } | |
812 if (java_lang_reflect_Constructor::has_annotations_field()) { | |
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813 typeArrayOop an_oop = Annotations::make_java_array(method->annotations(), CHECK_NULL); |
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814 java_lang_reflect_Constructor::set_annotations(ch(), an_oop); |
0 | 815 } |
816 if (java_lang_reflect_Constructor::has_parameter_annotations_field()) { | |
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817 typeArrayOop an_oop = Annotations::make_java_array(method->parameter_annotations(), CHECK_NULL); |
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818 java_lang_reflect_Constructor::set_parameter_annotations(ch(), an_oop); |
0 | 819 } |
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820 if (java_lang_reflect_Constructor::has_type_annotations_field()) { |
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821 typeArrayOop an_oop = Annotations::make_java_array(method->type_annotations(), CHECK_NULL); |
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822 java_lang_reflect_Constructor::set_type_annotations(ch(), an_oop); |
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823 } |
0 | 824 return ch(); |
825 } | |
826 | |
827 | |
828 oop Reflection::new_field(fieldDescriptor* fd, bool intern_name, TRAPS) { | |
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829 Symbol* field_name = fd->name(); |
0 | 830 Handle name; |
831 if (intern_name) { | |
832 // intern_name is only true with UseNewReflection | |
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833 oop name_oop = StringTable::intern(field_name, CHECK_NULL); |
0 | 834 name = Handle(THREAD, name_oop); |
835 } else { | |
836 name = java_lang_String::create_from_symbol(field_name, CHECK_NULL); | |
837 } | |
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838 Symbol* signature = fd->signature(); |
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839 instanceKlassHandle holder (THREAD, fd->field_holder()); |
0 | 840 Handle type = new_type(signature, holder, CHECK_NULL); |
841 Handle rh = java_lang_reflect_Field::create(CHECK_NULL); | |
842 | |
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843 java_lang_reflect_Field::set_clazz(rh(), fd->field_holder()->java_mirror()); |
0 | 844 java_lang_reflect_Field::set_slot(rh(), fd->index()); |
845 java_lang_reflect_Field::set_name(rh(), name()); | |
846 java_lang_reflect_Field::set_type(rh(), type()); | |
847 // Note the ACC_ANNOTATION bit, which is a per-class access flag, is never set here. | |
848 java_lang_reflect_Field::set_modifiers(rh(), fd->access_flags().as_int() & JVM_RECOGNIZED_FIELD_MODIFIERS); | |
849 java_lang_reflect_Field::set_override(rh(), false); | |
850 if (java_lang_reflect_Field::has_signature_field() && | |
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851 fd->has_generic_signature()) { |
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852 Symbol* gs = fd->generic_signature(); |
0 | 853 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); |
854 java_lang_reflect_Field::set_signature(rh(), sig()); | |
855 } | |
856 if (java_lang_reflect_Field::has_annotations_field()) { | |
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857 typeArrayOop an_oop = Annotations::make_java_array(fd->annotations(), CHECK_NULL); |
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858 java_lang_reflect_Field::set_annotations(rh(), an_oop); |
0 | 859 } |
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860 if (java_lang_reflect_Field::has_type_annotations_field()) { |
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861 typeArrayOop an_oop = Annotations::make_java_array(fd->type_annotations(), CHECK_NULL); |
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862 java_lang_reflect_Field::set_type_annotations(rh(), an_oop); |
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863 } |
0 | 864 return rh(); |
865 } | |
866 | |
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867 oop Reflection::new_parameter(Handle method, int index, Symbol* sym, |
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868 int flags, TRAPS) { |
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869 Handle name; |
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870 |
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871 // A null symbol here translates to the empty string |
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872 if(NULL != sym) { |
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873 name = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
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874 } else { |
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875 name = java_lang_String::create_from_str("", CHECK_NULL); |
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876 } |
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877 |
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878 Handle rh = java_lang_reflect_Parameter::create(CHECK_NULL); |
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879 java_lang_reflect_Parameter::set_name(rh(), name()); |
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880 java_lang_reflect_Parameter::set_modifiers(rh(), flags); |
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881 java_lang_reflect_Parameter::set_executable(rh(), method()); |
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882 java_lang_reflect_Parameter::set_index(rh(), index); |
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883 return rh(); |
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884 } |
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885 |
0 | 886 |
887 methodHandle Reflection::resolve_interface_call(instanceKlassHandle klass, methodHandle method, | |
888 KlassHandle recv_klass, Handle receiver, TRAPS) { | |
889 assert(!method.is_null() , "method should not be null"); | |
890 | |
891 CallInfo info; | |
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892 Symbol* signature = method->signature(); |
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893 Symbol* name = method->name(); |
0 | 894 LinkResolver::resolve_interface_call(info, receiver, recv_klass, klass, |
895 name, signature, | |
896 KlassHandle(), false, true, | |
897 CHECK_(methodHandle())); | |
898 return info.selected_method(); | |
899 } | |
900 | |
901 | |
902 oop Reflection::invoke(instanceKlassHandle klass, methodHandle reflected_method, | |
903 Handle receiver, bool override, objArrayHandle ptypes, | |
904 BasicType rtype, objArrayHandle args, bool is_method_invoke, TRAPS) { | |
905 ResourceMark rm(THREAD); | |
906 | |
907 methodHandle method; // actual method to invoke | |
908 KlassHandle target_klass; // target klass, receiver's klass for non-static | |
909 | |
910 // Ensure klass is initialized | |
911 klass->initialize(CHECK_NULL); | |
912 | |
913 bool is_static = reflected_method->is_static(); | |
914 if (is_static) { | |
915 // ignore receiver argument | |
916 method = reflected_method; | |
917 target_klass = klass; | |
918 } else { | |
919 // check for null receiver | |
920 if (receiver.is_null()) { | |
921 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
922 } | |
923 // Check class of receiver against class declaring method | |
924 if (!receiver->is_a(klass())) { | |
925 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "object is not an instance of declaring class"); | |
926 } | |
927 // target klass is receiver's klass | |
928 target_klass = KlassHandle(THREAD, receiver->klass()); | |
929 // no need to resolve if method is private or <init> | |
930 if (reflected_method->is_private() || reflected_method->name() == vmSymbols::object_initializer_name()) { | |
931 method = reflected_method; | |
932 } else { | |
933 // resolve based on the receiver | |
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934 if (reflected_method->method_holder()->is_interface()) { |
0 | 935 // resolve interface call |
936 if (ReflectionWrapResolutionErrors) { | |
937 // new default: 6531596 | |
938 // Match resolution errors with those thrown due to reflection inlining | |
939 // Linktime resolution & IllegalAccessCheck already done by Class.getMethod() | |
940 method = resolve_interface_call(klass, reflected_method, target_klass, receiver, THREAD); | |
941 if (HAS_PENDING_EXCEPTION) { | |
942 // Method resolution threw an exception; wrap it in an InvocationTargetException | |
943 oop resolution_exception = PENDING_EXCEPTION; | |
944 CLEAR_PENDING_EXCEPTION; | |
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945 // JVMTI has already reported the pending exception |
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946 // JVMTI internal flag reset is needed in order to report InvocationTargetException |
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947 if (THREAD->is_Java_thread()) { |
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948 JvmtiExport::clear_detected_exception((JavaThread*) THREAD); |
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949 } |
0 | 950 JavaCallArguments args(Handle(THREAD, resolution_exception)); |
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951 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(), |
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952 vmSymbols::throwable_void_signature(), |
0 | 953 &args); |
954 } | |
955 } else { | |
956 method = resolve_interface_call(klass, reflected_method, target_klass, receiver, CHECK_(NULL)); | |
957 } | |
958 } else { | |
959 // if the method can be overridden, we resolve using the vtable index. | |
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960 assert(!reflected_method->has_itable_index(), ""); |
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961 int index = reflected_method->vtable_index(); |
0 | 962 method = reflected_method; |
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963 if (index != Method::nonvirtual_vtable_index) { |
0 | 964 // target_klass might be an arrayKlassOop but all vtables start at |
965 // the same place. The cast is to avoid virtual call and assertion. | |
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966 InstanceKlass* inst = (InstanceKlass*)target_klass(); |
0 | 967 method = methodHandle(THREAD, inst->method_at_vtable(index)); |
968 } | |
969 if (!method.is_null()) { | |
970 // Check for abstract methods as well | |
971 if (method->is_abstract()) { | |
972 // new default: 6531596 | |
973 if (ReflectionWrapResolutionErrors) { | |
974 ResourceMark rm(THREAD); | |
975 Handle h_origexception = Exceptions::new_exception(THREAD, | |
976 vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 977 Method::name_and_sig_as_C_string(target_klass(), |
0 | 978 method->name(), |
979 method->signature())); | |
980 JavaCallArguments args(h_origexception); | |
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981 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(), |
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982 vmSymbols::throwable_void_signature(), |
0 | 983 &args); |
984 } else { | |
985 ResourceMark rm(THREAD); | |
986 THROW_MSG_0(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 987 Method::name_and_sig_as_C_string(target_klass(), |
0 | 988 method->name(), |
989 method->signature())); | |
990 } | |
991 } | |
992 } | |
993 } | |
994 } | |
995 } | |
996 | |
997 // I believe this is a ShouldNotGetHere case which requires | |
998 // an internal vtable bug. If you ever get this please let Karen know. | |
999 if (method.is_null()) { | |
1000 ResourceMark rm(THREAD); | |
1001 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 1002 Method::name_and_sig_as_C_string(klass(), |
0 | 1003 reflected_method->name(), |
1004 reflected_method->signature())); | |
1005 } | |
1006 | |
1007 // In the JDK 1.4 reflection implementation, the security check is | |
1008 // done at the Java level | |
1009 if (!(JDK_Version::is_gte_jdk14x_version() && UseNewReflection)) { | |
1010 | |
1011 // Access checking (unless overridden by Method) | |
1012 if (!override) { | |
1013 if (!(klass->is_public() && reflected_method->is_public())) { | |
1014 bool access = Reflection::reflect_check_access(klass(), reflected_method->access_flags(), target_klass(), is_method_invoke, CHECK_NULL); | |
1015 if (!access) { | |
1016 return NULL; // exception | |
1017 } | |
1018 } | |
1019 } | |
1020 | |
1021 } // !(Universe::is_gte_jdk14x_version() && UseNewReflection) | |
1022 | |
1023 assert(ptypes->is_objArray(), "just checking"); | |
1024 int args_len = args.is_null() ? 0 : args->length(); | |
1025 // Check number of arguments | |
1026 if (ptypes->length() != args_len) { | |
1027 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "wrong number of arguments"); | |
1028 } | |
1029 | |
1030 // Create object to contain parameters for the JavaCall | |
1031 JavaCallArguments java_args(method->size_of_parameters()); | |
1032 | |
1033 if (!is_static) { | |
1034 java_args.push_oop(receiver); | |
1035 } | |
1036 | |
1037 for (int i = 0; i < args_len; i++) { | |
1038 oop type_mirror = ptypes->obj_at(i); | |
1039 oop arg = args->obj_at(i); | |
1040 if (java_lang_Class::is_primitive(type_mirror)) { | |
1041 jvalue value; | |
1042 BasicType ptype = basic_type_mirror_to_basic_type(type_mirror, CHECK_NULL); | |
1043 BasicType atype = unbox_for_primitive(arg, &value, CHECK_NULL); | |
1044 if (ptype != atype) { | |
1045 widen(&value, atype, ptype, CHECK_NULL); | |
1046 } | |
1047 switch (ptype) { | |
1048 case T_BOOLEAN: java_args.push_int(value.z); break; | |
1049 case T_CHAR: java_args.push_int(value.c); break; | |
1050 case T_BYTE: java_args.push_int(value.b); break; | |
1051 case T_SHORT: java_args.push_int(value.s); break; | |
1052 case T_INT: java_args.push_int(value.i); break; | |
1053 case T_LONG: java_args.push_long(value.j); break; | |
1054 case T_FLOAT: java_args.push_float(value.f); break; | |
1055 case T_DOUBLE: java_args.push_double(value.d); break; | |
1056 default: | |
1057 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
1058 } | |
1059 } else { | |
1060 if (arg != NULL) { | |
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1061 Klass* k = java_lang_Class::as_Klass(type_mirror); |
0 | 1062 if (!arg->is_a(k)) { |
1063 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
1064 } | |
1065 } | |
1066 Handle arg_handle(THREAD, arg); // Create handle for argument | |
1067 java_args.push_oop(arg_handle); // Push handle | |
1068 } | |
1069 } | |
1070 | |
1071 assert(java_args.size_of_parameters() == method->size_of_parameters(), "just checking"); | |
1072 | |
1073 // All oops (including receiver) is passed in as Handles. An potential oop is returned as an | |
1074 // oop (i.e., NOT as an handle) | |
1075 JavaValue result(rtype); | |
1076 JavaCalls::call(&result, method, &java_args, THREAD); | |
1077 | |
1078 if (HAS_PENDING_EXCEPTION) { | |
1079 // Method threw an exception; wrap it in an InvocationTargetException | |
1080 oop target_exception = PENDING_EXCEPTION; | |
1081 CLEAR_PENDING_EXCEPTION; | |
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1082 // JVMTI has already reported the pending exception |
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1083 // JVMTI internal flag reset is needed in order to report InvocationTargetException |
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1084 if (THREAD->is_Java_thread()) { |
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1085 JvmtiExport::clear_detected_exception((JavaThread*) THREAD); |
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1086 } |
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1087 |
0 | 1088 JavaCallArguments args(Handle(THREAD, target_exception)); |
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1089 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(), |
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1090 vmSymbols::throwable_void_signature(), |
0 | 1091 &args); |
1092 } else { | |
1093 if (rtype == T_BOOLEAN || rtype == T_BYTE || rtype == T_CHAR || rtype == T_SHORT) | |
1094 narrow((jvalue*) result.get_value_addr(), rtype, CHECK_NULL); | |
1095 return box((jvalue*) result.get_value_addr(), rtype, CHECK_NULL); | |
1096 } | |
1097 } | |
1098 | |
1099 | |
1100 void Reflection::narrow(jvalue* value, BasicType narrow_type, TRAPS) { | |
1101 switch (narrow_type) { | |
1102 case T_BOOLEAN: | |
1103 value->z = (jboolean) value->i; | |
1104 return; | |
1105 case T_BYTE: | |
1106 value->b = (jbyte) value->i; | |
1107 return; | |
1108 case T_CHAR: | |
1109 value->c = (jchar) value->i; | |
1110 return; | |
1111 case T_SHORT: | |
1112 value->s = (jshort) value->i; | |
1113 return; | |
1114 default: | |
1115 break; // fail | |
1116 } | |
1117 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
1118 } | |
1119 | |
1120 | |
1121 BasicType Reflection::basic_type_mirror_to_basic_type(oop basic_type_mirror, TRAPS) { | |
1122 assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking"); | |
1123 return java_lang_Class::primitive_type(basic_type_mirror); | |
1124 } | |
1125 | |
1126 // This would be nicer if, say, java.lang.reflect.Method was a subclass | |
1127 // of java.lang.reflect.Constructor | |
1128 | |
1129 oop Reflection::invoke_method(oop method_mirror, Handle receiver, objArrayHandle args, TRAPS) { | |
1130 oop mirror = java_lang_reflect_Method::clazz(method_mirror); | |
1131 int slot = java_lang_reflect_Method::slot(method_mirror); | |
1132 bool override = java_lang_reflect_Method::override(method_mirror) != 0; | |
1133 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Method::parameter_types(method_mirror))); | |
1134 | |
1135 oop return_type_mirror = java_lang_reflect_Method::return_type(method_mirror); | |
1136 BasicType rtype; | |
1137 if (java_lang_Class::is_primitive(return_type_mirror)) { | |
1138 rtype = basic_type_mirror_to_basic_type(return_type_mirror, CHECK_NULL); | |
1139 } else { | |
1140 rtype = T_OBJECT; | |
1141 } | |
1142 | |
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1143 instanceKlassHandle klass(THREAD, java_lang_Class::as_Klass(mirror)); |
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1144 Method* m = klass->method_with_idnum(slot); |
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1145 if (m == NULL) { |
0 | 1146 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke"); |
1147 } | |
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1148 methodHandle method(THREAD, m); |
0 | 1149 |
1150 return invoke(klass, method, receiver, override, ptypes, rtype, args, true, THREAD); | |
1151 } | |
1152 | |
1153 | |
1154 oop Reflection::invoke_constructor(oop constructor_mirror, objArrayHandle args, TRAPS) { | |
1155 oop mirror = java_lang_reflect_Constructor::clazz(constructor_mirror); | |
1156 int slot = java_lang_reflect_Constructor::slot(constructor_mirror); | |
1157 bool override = java_lang_reflect_Constructor::override(constructor_mirror) != 0; | |
1158 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Constructor::parameter_types(constructor_mirror))); | |
1159 | |
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1160 instanceKlassHandle klass(THREAD, java_lang_Class::as_Klass(mirror)); |
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1161 Method* m = klass->method_with_idnum(slot); |
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1162 if (m == NULL) { |
0 | 1163 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke"); |
1164 } | |
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1165 methodHandle method(THREAD, m); |
0 | 1166 assert(method->name() == vmSymbols::object_initializer_name(), "invalid constructor"); |
1167 | |
1168 // Make sure klass gets initialize | |
1169 klass->initialize(CHECK_NULL); | |
1170 | |
1171 // Create new instance (the receiver) | |
1172 klass->check_valid_for_instantiation(false, CHECK_NULL); | |
1173 Handle receiver = klass->allocate_instance_handle(CHECK_NULL); | |
1174 | |
1175 // Ignore result from call and return receiver | |
1176 invoke(klass, method, receiver, override, ptypes, T_VOID, args, false, CHECK_NULL); | |
1177 return receiver(); | |
1178 } |