Mercurial > hg > truffle
annotate src/share/vm/runtime/reflection.cpp @ 17381:40dce17629ac
correct IfNode probabilities in If-Deopt situations
author | Lukas Stadler <lukas.stadler@oracle.com> |
---|---|
date | Wed, 08 Oct 2014 10:49:53 +0200 |
parents | 4ca6dc0799b6 |
children | eaf39a954227 |
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" | |
39 #include "runtime/arguments.hpp" | |
40 #include "runtime/handles.inline.hpp" | |
41 #include "runtime/javaCalls.hpp" | |
42 #include "runtime/reflection.hpp" | |
43 #include "runtime/reflectionUtils.hpp" | |
44 #include "runtime/signature.hpp" | |
45 #include "runtime/vframe.hpp" | |
0 | 46 |
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47 static void trace_class_resolution(Klass* to_class) { |
0 | 48 ResourceMark rm; |
49 int line_number = -1; | |
50 const char * source_file = NULL; | |
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51 Klass* caller = NULL; |
0 | 52 JavaThread* jthread = JavaThread::current(); |
53 if (jthread->has_last_Java_frame()) { | |
54 vframeStream vfst(jthread); | |
55 // skip over any frames belonging to java.lang.Class | |
56 while (!vfst.at_end() && | |
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57 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class()) { |
0 | 58 vfst.next(); |
59 } | |
60 if (!vfst.at_end()) { | |
61 // this frame is a likely suspect | |
62 caller = vfst.method()->method_holder(); | |
63 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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64 Symbol* s = vfst.method()->method_holder()->source_file_name(); |
0 | 65 if (s != NULL) { |
66 source_file = s->as_C_string(); | |
67 } | |
68 } | |
69 } | |
70 if (caller != NULL) { | |
6983 | 71 const char * from = caller->external_name(); |
72 const char * to = to_class->external_name(); | |
0 | 73 // print in a single call to reduce interleaving between threads |
74 if (source_file != NULL) { | |
75 tty->print("RESOLVE %s %s %s:%d (reflection)\n", from, to, source_file, line_number); | |
76 } else { | |
77 tty->print("RESOLVE %s %s (reflection)\n", from, to); | |
78 } | |
79 } | |
80 } | |
81 | |
82 | |
83 oop Reflection::box(jvalue* value, BasicType type, TRAPS) { | |
84 if (type == T_VOID) { | |
85 return NULL; | |
86 } | |
87 if (type == T_OBJECT || type == T_ARRAY) { | |
88 // regular objects are not boxed | |
89 return (oop) value->l; | |
90 } | |
91 oop result = java_lang_boxing_object::create(type, value, CHECK_NULL); | |
92 if (result == NULL) { | |
93 THROW_(vmSymbols::java_lang_IllegalArgumentException(), result); | |
94 } | |
95 return result; | |
96 } | |
97 | |
98 | |
99 BasicType Reflection::unbox_for_primitive(oop box, jvalue* value, TRAPS) { | |
100 if (box == NULL) { | |
101 THROW_(vmSymbols::java_lang_IllegalArgumentException(), T_ILLEGAL); | |
102 } | |
103 return java_lang_boxing_object::get_value(box, value); | |
104 } | |
105 | |
106 BasicType Reflection::unbox_for_regular_object(oop box, jvalue* value) { | |
107 // Note: box is really the unboxed oop. It might even be a Short, etc.! | |
108 value->l = (jobject) box; | |
109 return T_OBJECT; | |
110 } | |
111 | |
112 | |
113 void Reflection::widen(jvalue* value, BasicType current_type, BasicType wide_type, TRAPS) { | |
114 assert(wide_type != current_type, "widen should not be called with identical types"); | |
115 switch (wide_type) { | |
116 case T_BOOLEAN: | |
117 case T_BYTE: | |
118 case T_CHAR: | |
119 break; // fail | |
120 case T_SHORT: | |
121 switch (current_type) { | |
122 case T_BYTE: | |
123 value->s = (jshort) value->b; | |
124 return; | |
125 } | |
126 break; // fail | |
127 case T_INT: | |
128 switch (current_type) { | |
129 case T_BYTE: | |
130 value->i = (jint) value->b; | |
131 return; | |
132 case T_CHAR: | |
133 value->i = (jint) value->c; | |
134 return; | |
135 case T_SHORT: | |
136 value->i = (jint) value->s; | |
137 return; | |
138 } | |
139 break; // fail | |
140 case T_LONG: | |
141 switch (current_type) { | |
142 case T_BYTE: | |
143 value->j = (jlong) value->b; | |
144 return; | |
145 case T_CHAR: | |
146 value->j = (jlong) value->c; | |
147 return; | |
148 case T_SHORT: | |
149 value->j = (jlong) value->s; | |
150 return; | |
151 case T_INT: | |
152 value->j = (jlong) value->i; | |
153 return; | |
154 } | |
155 break; // fail | |
156 case T_FLOAT: | |
157 switch (current_type) { | |
158 case T_BYTE: | |
159 value->f = (jfloat) value->b; | |
160 return; | |
161 case T_CHAR: | |
162 value->f = (jfloat) value->c; | |
163 return; | |
164 case T_SHORT: | |
165 value->f = (jfloat) value->s; | |
166 return; | |
167 case T_INT: | |
168 value->f = (jfloat) value->i; | |
169 return; | |
170 case T_LONG: | |
171 value->f = (jfloat) value->j; | |
172 return; | |
173 } | |
174 break; // fail | |
175 case T_DOUBLE: | |
176 switch (current_type) { | |
177 case T_BYTE: | |
178 value->d = (jdouble) value->b; | |
179 return; | |
180 case T_CHAR: | |
181 value->d = (jdouble) value->c; | |
182 return; | |
183 case T_SHORT: | |
184 value->d = (jdouble) value->s; | |
185 return; | |
186 case T_INT: | |
187 value->d = (jdouble) value->i; | |
188 return; | |
189 case T_FLOAT: | |
190 value->d = (jdouble) value->f; | |
191 return; | |
192 case T_LONG: | |
193 value->d = (jdouble) value->j; | |
194 return; | |
195 } | |
196 break; // fail | |
197 default: | |
198 break; // fail | |
199 } | |
200 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
201 } | |
202 | |
203 | |
204 BasicType Reflection::array_get(jvalue* value, arrayOop a, int index, TRAPS) { | |
205 if (!a->is_within_bounds(index)) { | |
206 THROW_(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), T_ILLEGAL); | |
207 } | |
208 if (a->is_objArray()) { | |
209 value->l = (jobject) objArrayOop(a)->obj_at(index); | |
210 return T_OBJECT; | |
211 } else { | |
212 assert(a->is_typeArray(), "just checking"); | |
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213 BasicType type = TypeArrayKlass::cast(a->klass())->element_type(); |
0 | 214 switch (type) { |
215 case T_BOOLEAN: | |
216 value->z = typeArrayOop(a)->bool_at(index); | |
217 break; | |
218 case T_CHAR: | |
219 value->c = typeArrayOop(a)->char_at(index); | |
220 break; | |
221 case T_FLOAT: | |
222 value->f = typeArrayOop(a)->float_at(index); | |
223 break; | |
224 case T_DOUBLE: | |
225 value->d = typeArrayOop(a)->double_at(index); | |
226 break; | |
227 case T_BYTE: | |
228 value->b = typeArrayOop(a)->byte_at(index); | |
229 break; | |
230 case T_SHORT: | |
231 value->s = typeArrayOop(a)->short_at(index); | |
232 break; | |
233 case T_INT: | |
234 value->i = typeArrayOop(a)->int_at(index); | |
235 break; | |
236 case T_LONG: | |
237 value->j = typeArrayOop(a)->long_at(index); | |
238 break; | |
239 default: | |
240 return T_ILLEGAL; | |
241 } | |
242 return type; | |
243 } | |
244 } | |
245 | |
246 | |
247 void Reflection::array_set(jvalue* value, arrayOop a, int index, BasicType value_type, TRAPS) { | |
248 if (!a->is_within_bounds(index)) { | |
249 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
250 } | |
251 if (a->is_objArray()) { | |
252 if (value_type == T_OBJECT) { | |
253 oop obj = (oop) value->l; | |
254 if (obj != NULL) { | |
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255 Klass* element_klass = ObjArrayKlass::cast(a->klass())->element_klass(); |
0 | 256 if (!obj->is_a(element_klass)) { |
257 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "array element type mismatch"); | |
258 } | |
259 } | |
260 objArrayOop(a)->obj_at_put(index, obj); | |
261 } | |
262 } else { | |
263 assert(a->is_typeArray(), "just checking"); | |
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264 BasicType array_type = TypeArrayKlass::cast(a->klass())->element_type(); |
0 | 265 if (array_type != value_type) { |
266 // The widen operation can potentially throw an exception, but cannot block, | |
267 // so typeArrayOop a is safe if the call succeeds. | |
268 widen(value, value_type, array_type, CHECK); | |
269 } | |
270 switch (array_type) { | |
271 case T_BOOLEAN: | |
272 typeArrayOop(a)->bool_at_put(index, value->z); | |
273 break; | |
274 case T_CHAR: | |
275 typeArrayOop(a)->char_at_put(index, value->c); | |
276 break; | |
277 case T_FLOAT: | |
278 typeArrayOop(a)->float_at_put(index, value->f); | |
279 break; | |
280 case T_DOUBLE: | |
281 typeArrayOop(a)->double_at_put(index, value->d); | |
282 break; | |
283 case T_BYTE: | |
284 typeArrayOop(a)->byte_at_put(index, value->b); | |
285 break; | |
286 case T_SHORT: | |
287 typeArrayOop(a)->short_at_put(index, value->s); | |
288 break; | |
289 case T_INT: | |
290 typeArrayOop(a)->int_at_put(index, value->i); | |
291 break; | |
292 case T_LONG: | |
293 typeArrayOop(a)->long_at_put(index, value->j); | |
294 break; | |
295 default: | |
296 THROW(vmSymbols::java_lang_IllegalArgumentException()); | |
297 } | |
298 } | |
299 } | |
300 | |
301 | |
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302 Klass* Reflection::basic_type_mirror_to_arrayklass(oop basic_type_mirror, TRAPS) { |
0 | 303 assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking"); |
304 BasicType type = java_lang_Class::primitive_type(basic_type_mirror); | |
305 if (type == T_VOID) { | |
306 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
307 } else { | |
308 return Universe::typeArrayKlassObj(type); | |
309 } | |
310 } | |
311 | |
312 | |
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313 oop Reflection:: basic_type_arrayklass_to_mirror(Klass* basic_type_arrayklass, TRAPS) { |
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314 BasicType type = TypeArrayKlass::cast(basic_type_arrayklass)->element_type(); |
0 | 315 return Universe::java_mirror(type); |
316 } | |
317 | |
318 | |
319 arrayOop Reflection::reflect_new_array(oop element_mirror, jint length, TRAPS) { | |
320 if (element_mirror == NULL) { | |
321 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
322 } | |
323 if (length < 0) { | |
324 THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); | |
325 } | |
326 if (java_lang_Class::is_primitive(element_mirror)) { | |
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327 Klass* tak = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL); |
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328 return TypeArrayKlass::cast(tak)->allocate(length, THREAD); |
0 | 329 } else { |
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330 Klass* k = java_lang_Class::as_Klass(element_mirror); |
6983 | 331 if (k->oop_is_array() && ArrayKlass::cast(k)->dimension() >= MAX_DIM) { |
0 | 332 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); |
333 } | |
334 return oopFactory::new_objArray(k, length, THREAD); | |
335 } | |
336 } | |
337 | |
338 | |
339 arrayOop Reflection::reflect_new_multi_array(oop element_mirror, typeArrayOop dim_array, TRAPS) { | |
340 assert(dim_array->is_typeArray(), "just checking"); | |
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341 assert(TypeArrayKlass::cast(dim_array->klass())->element_type() == T_INT, "just checking"); |
0 | 342 |
343 if (element_mirror == NULL) { | |
344 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
345 } | |
346 | |
347 int len = dim_array->length(); | |
348 if (len <= 0 || len > MAX_DIM) { | |
349 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
350 } | |
351 | |
352 jint dimensions[MAX_DIM]; // C array copy of intArrayOop | |
353 for (int i = 0; i < len; i++) { | |
354 int d = dim_array->int_at(i); | |
355 if (d < 0) { | |
356 THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); | |
357 } | |
358 dimensions[i] = d; | |
359 } | |
360 | |
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361 Klass* klass; |
0 | 362 int dim = len; |
363 if (java_lang_Class::is_primitive(element_mirror)) { | |
364 klass = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL); | |
365 } else { | |
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366 klass = java_lang_Class::as_Klass(element_mirror); |
6983 | 367 if (klass->oop_is_array()) { |
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368 int k_dim = ArrayKlass::cast(klass)->dimension(); |
0 | 369 if (k_dim + len > MAX_DIM) { |
370 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); | |
371 } | |
372 dim += k_dim; | |
373 } | |
374 } | |
6983 | 375 klass = klass->array_klass(dim, CHECK_NULL); |
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376 oop obj = ArrayKlass::cast(klass)->multi_allocate(len, dimensions, CHECK_NULL); |
0 | 377 assert(obj->is_array(), "just checking"); |
378 return arrayOop(obj); | |
379 } | |
380 | |
381 | |
382 oop Reflection::array_component_type(oop mirror, TRAPS) { | |
383 if (java_lang_Class::is_primitive(mirror)) { | |
384 return NULL; | |
385 } | |
386 | |
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387 Klass* klass = java_lang_Class::as_Klass(mirror); |
6983 | 388 if (!klass->oop_is_array()) { |
0 | 389 return NULL; |
390 } | |
391 | |
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392 oop result = ArrayKlass::cast(klass)->component_mirror(); |
0 | 393 #ifdef ASSERT |
394 oop result2 = NULL; | |
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395 if (ArrayKlass::cast(klass)->dimension() == 1) { |
6983 | 396 if (klass->oop_is_typeArray()) { |
0 | 397 result2 = basic_type_arrayklass_to_mirror(klass, CHECK_NULL); |
398 } else { | |
6983 | 399 result2 = ObjArrayKlass::cast(klass)->element_klass()->java_mirror(); |
0 | 400 } |
401 } else { | |
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402 Klass* lower_dim = ArrayKlass::cast(klass)->lower_dimension(); |
6983 | 403 assert(lower_dim->oop_is_array(), "just checking"); |
404 result2 = lower_dim->java_mirror(); | |
0 | 405 } |
406 assert(result == result2, "results must be consistent"); | |
407 #endif //ASSERT | |
408 return result; | |
409 } | |
410 | |
411 | |
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412 bool Reflection::reflect_check_access(Klass* field_class, AccessFlags acc, Klass* target_class, bool is_method_invoke, TRAPS) { |
0 | 413 // field_class : declaring class |
414 // acc : declared field access | |
415 // target_class : for protected | |
416 | |
417 // Check if field or method is accessible to client. Throw an | |
418 // IllegalAccessException and return false if not. | |
419 | |
420 // The "client" is the class associated with the nearest real frame | |
421 // getCallerClass already skips Method.invoke frames, so pass 0 in | |
422 // that case (same as classic). | |
423 ResourceMark rm(THREAD); | |
424 assert(THREAD->is_Java_thread(), "sanity check"); | |
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425 Klass* client_class = ((JavaThread *)THREAD)->security_get_caller_class(is_method_invoke ? 0 : 1); |
0 | 426 |
427 if (client_class != field_class) { | |
428 if (!verify_class_access(client_class, field_class, false) | |
429 || !verify_field_access(client_class, | |
430 field_class, | |
431 field_class, | |
432 acc, | |
433 false)) { | |
434 THROW_(vmSymbols::java_lang_IllegalAccessException(), false); | |
435 } | |
436 } | |
437 | |
438 // Additional test for protected members: JLS 6.6.2 | |
439 | |
440 if (acc.is_protected()) { | |
441 if (target_class != client_class) { | |
442 if (!is_same_class_package(client_class, field_class)) { | |
6983 | 443 if (!target_class->is_subclass_of(client_class)) { |
0 | 444 THROW_(vmSymbols::java_lang_IllegalAccessException(), false); |
445 } | |
446 } | |
447 } | |
448 } | |
449 | |
450 // Passed all tests | |
451 return true; | |
452 } | |
453 | |
454 | |
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455 bool Reflection::verify_class_access(Klass* current_class, Klass* new_class, bool classloader_only) { |
0 | 456 // Verify that current_class can access new_class. If the classloader_only |
457 // flag is set, we automatically allow any accesses in which current_class | |
458 // doesn't have a classloader. | |
459 if ((current_class == NULL) || | |
460 (current_class == new_class) || | |
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461 (new_class->is_public()) || |
0 | 462 is_same_class_package(current_class, new_class)) { |
463 return true; | |
464 } | |
465 // New (1.4) reflection implementation. Allow all accesses from | |
466 // sun/reflect/MagicAccessorImpl subclasses to succeed trivially. | |
467 if ( JDK_Version::is_gte_jdk14x_version() | |
468 && UseNewReflection | |
6983 | 469 && current_class->is_subclass_of(SystemDictionary::reflect_MagicAccessorImpl_klass())) { |
0 | 470 return true; |
471 } | |
472 | |
473 return can_relax_access_check_for(current_class, new_class, classloader_only); | |
474 } | |
475 | |
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476 static bool under_host_klass(InstanceKlass* ik, Klass* host_klass) { |
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477 DEBUG_ONLY(int inf_loop_check = 1000 * 1000 * 1000); |
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478 for (;;) { |
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479 Klass* hc = (Klass*) ik->host_klass(); |
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480 if (hc == NULL) return false; |
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481 if (hc == host_klass) return true; |
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482 ik = InstanceKlass::cast(hc); |
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483 |
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484 // There's no way to make a host class loop short of patching memory. |
14909 | 485 // Therefore there cannot be a loop here unles there's another bug. |
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486 // Still, let's check for it. |
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487 assert(--inf_loop_check > 0, "no host_klass loop"); |
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488 } |
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489 } |
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490 |
0 | 491 bool Reflection::can_relax_access_check_for( |
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492 Klass* accessor, Klass* accessee, bool classloader_only) { |
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493 InstanceKlass* accessor_ik = InstanceKlass::cast(accessor); |
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494 InstanceKlass* accessee_ik = InstanceKlass::cast(accessee); |
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495 |
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496 // If either is on the other's host_klass chain, access is OK, |
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497 // because one is inside the other. |
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498 if (under_host_klass(accessor_ik, accessee) || |
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499 under_host_klass(accessee_ik, accessor)) |
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500 return true; |
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501 |
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502 if ((RelaxAccessControlCheck && |
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503 accessor_ik->major_version() < Verifier::NO_RELAX_ACCESS_CTRL_CHECK_VERSION && |
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504 accessee_ik->major_version() < Verifier::NO_RELAX_ACCESS_CTRL_CHECK_VERSION) || |
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505 (accessor_ik->major_version() < Verifier::STRICTER_ACCESS_CTRL_CHECK_VERSION && |
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506 accessee_ik->major_version() < Verifier::STRICTER_ACCESS_CTRL_CHECK_VERSION)) { |
0 | 507 return classloader_only && |
508 Verifier::relax_verify_for(accessor_ik->class_loader()) && | |
509 accessor_ik->protection_domain() == accessee_ik->protection_domain() && | |
510 accessor_ik->class_loader() == accessee_ik->class_loader(); | |
511 } else { | |
512 return false; | |
513 } | |
514 } | |
515 | |
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516 bool Reflection::verify_field_access(Klass* current_class, |
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517 Klass* resolved_class, |
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518 Klass* field_class, |
0 | 519 AccessFlags access, |
520 bool classloader_only, | |
521 bool protected_restriction) { | |
522 // Verify that current_class can access a field of field_class, where that | |
523 // field's access bits are "access". We assume that we've already verified | |
524 // that current_class can access field_class. | |
525 // | |
526 // If the classloader_only flag is set, we automatically allow any accesses | |
527 // in which current_class doesn't have a classloader. | |
528 // | |
529 // "resolved_class" is the runtime type of "field_class". Sometimes we don't | |
530 // need this distinction (e.g. if all we have is the runtime type, or during | |
531 // class file parsing when we only care about the static type); in that case | |
532 // callers should ensure that resolved_class == field_class. | |
533 // | |
534 if ((current_class == NULL) || | |
535 (current_class == field_class) || | |
536 access.is_public()) { | |
537 return true; | |
538 } | |
539 | |
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540 Klass* host_class = current_class; |
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541 while (host_class->oop_is_instance() && |
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542 InstanceKlass::cast(host_class)->is_anonymous()) { |
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543 Klass* next_host_class = InstanceKlass::cast(host_class)->host_klass(); |
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544 if (next_host_class == NULL) break; |
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545 host_class = next_host_class; |
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546 } |
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547 if (host_class == field_class) { |
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548 return true; |
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549 } |
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550 |
0 | 551 if (access.is_protected()) { |
552 if (!protected_restriction) { | |
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553 // See if current_class (or outermost host class) is a subclass of field_class |
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554 if (host_class->is_subclass_of(field_class)) { |
115 | 555 if (access.is_static() || // static fields are ok, see 6622385 |
556 current_class == resolved_class || | |
0 | 557 field_class == resolved_class || |
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558 host_class->is_subclass_of(resolved_class) || |
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559 resolved_class->is_subclass_of(host_class)) { |
0 | 560 return true; |
561 } | |
562 } | |
563 } | |
564 } | |
565 | |
566 if (!access.is_private() && is_same_class_package(current_class, field_class)) { | |
567 return true; | |
568 } | |
569 | |
570 // New (1.4) reflection implementation. Allow all accesses from | |
571 // sun/reflect/MagicAccessorImpl subclasses to succeed trivially. | |
572 if ( JDK_Version::is_gte_jdk14x_version() | |
573 && UseNewReflection | |
6983 | 574 && current_class->is_subclass_of(SystemDictionary::reflect_MagicAccessorImpl_klass())) { |
0 | 575 return true; |
576 } | |
577 | |
578 return can_relax_access_check_for( | |
579 current_class, field_class, classloader_only); | |
580 } | |
581 | |
582 | |
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583 bool Reflection::is_same_class_package(Klass* class1, Klass* class2) { |
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584 return InstanceKlass::cast(class1)->is_same_class_package(class2); |
0 | 585 } |
586 | |
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587 bool Reflection::is_same_package_member(Klass* class1, Klass* class2, TRAPS) { |
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588 return InstanceKlass::cast(class1)->is_same_package_member(class2, THREAD); |
665
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589 } |
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590 |
0 | 591 |
592 // Checks that the 'outer' klass has declared 'inner' as being an inner klass. If not, | |
593 // throw an incompatible class change exception | |
665
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594 // If inner_is_member, require the inner to be a member of the outer. |
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595 // If !inner_is_member, require the inner to be anonymous (a non-member). |
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596 // Caller is responsible for figuring out in advance which case must be true. |
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597 void Reflection::check_for_inner_class(instanceKlassHandle outer, instanceKlassHandle inner, |
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598 bool inner_is_member, TRAPS) { |
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599 InnerClassesIterator iter(outer); |
0 | 600 constantPoolHandle cp (THREAD, outer->constants()); |
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601 for (; !iter.done(); iter.next()) { |
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602 int ioff = iter.inner_class_info_index(); |
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603 int ooff = iter.outer_class_info_index(); |
0 | 604 |
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605 if (inner_is_member && ioff != 0 && ooff != 0) { |
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606 Klass* o = cp->klass_at(ooff, CHECK); |
0 | 607 if (o == outer()) { |
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608 Klass* i = cp->klass_at(ioff, CHECK); |
0 | 609 if (i == inner()) { |
610 return; | |
611 } | |
612 } | |
613 } | |
665
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614 if (!inner_is_member && ioff != 0 && ooff == 0 && |
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615 cp->klass_name_at_matches(inner, ioff)) { |
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616 Klass* i = cp->klass_at(ioff, CHECK); |
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617 if (i == inner()) { |
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618 return; |
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619 } |
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620 } |
0 | 621 } |
622 | |
623 // 'inner' not declared as an inner klass in outer | |
624 ResourceMark rm(THREAD); | |
625 Exceptions::fthrow( | |
626 THREAD_AND_LOCATION, | |
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627 vmSymbols::java_lang_IncompatibleClassChangeError(), |
0 | 628 "%s and %s disagree on InnerClasses attribute", |
629 outer->external_name(), | |
630 inner->external_name() | |
631 ); | |
632 } | |
633 | |
634 // Utility method converting a single SignatureStream element into java.lang.Class instance | |
635 | |
636 oop get_mirror_from_signature(methodHandle method, SignatureStream* ss, TRAPS) { | |
637 switch (ss->type()) { | |
638 default: | |
639 assert(ss->type() != T_VOID || ss->at_return_type(), "T_VOID should only appear as return type"); | |
640 return java_lang_Class::primitive_mirror(ss->type()); | |
641 case T_OBJECT: | |
642 case T_ARRAY: | |
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643 Symbol* name = ss->as_symbol(CHECK_NULL); |
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644 oop loader = method->method_holder()->class_loader(); |
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645 oop protection_domain = method->method_holder()->protection_domain(); |
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646 Klass* k = SystemDictionary::resolve_or_fail( |
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647 name, |
0 | 648 Handle(THREAD, loader), |
649 Handle(THREAD, protection_domain), | |
650 true, CHECK_NULL); | |
651 if (TraceClassResolution) { | |
652 trace_class_resolution(k); | |
653 } | |
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654 return k->java_mirror(); |
0 | 655 }; |
656 } | |
657 | |
658 | |
659 objArrayHandle Reflection::get_parameter_types(methodHandle method, int parameter_count, oop* return_type, TRAPS) { | |
660 // Allocate array holding parameter types (java.lang.Class instances) | |
1142 | 661 objArrayOop m = oopFactory::new_objArray(SystemDictionary::Class_klass(), parameter_count, CHECK_(objArrayHandle())); |
0 | 662 objArrayHandle mirrors (THREAD, m); |
663 int index = 0; | |
664 // Collect parameter types | |
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665 ResourceMark rm(THREAD); |
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666 Symbol* signature = method->signature(); |
0 | 667 SignatureStream ss(signature); |
668 while (!ss.at_return_type()) { | |
669 oop mirror = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle())); | |
670 mirrors->obj_at_put(index++, mirror); | |
671 ss.next(); | |
672 } | |
673 assert(index == parameter_count, "invalid parameter count"); | |
674 if (return_type != NULL) { | |
675 // Collect return type as well | |
676 assert(ss.at_return_type(), "return type should be present"); | |
677 *return_type = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle())); | |
678 } | |
679 return mirrors; | |
680 } | |
681 | |
682 objArrayHandle Reflection::get_exception_types(methodHandle method, TRAPS) { | |
683 return method->resolved_checked_exceptions(CHECK_(objArrayHandle())); | |
684 } | |
685 | |
686 | |
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687 Handle Reflection::new_type(Symbol* signature, KlassHandle k, TRAPS) { |
0 | 688 // Basic types |
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689 BasicType type = vmSymbols::signature_type(signature); |
0 | 690 if (type != T_OBJECT) { |
691 return Handle(THREAD, Universe::java_mirror(type)); | |
692 } | |
693 | |
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694 oop loader = InstanceKlass::cast(k())->class_loader(); |
6983 | 695 oop protection_domain = k()->protection_domain(); |
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696 Klass* result = SystemDictionary::resolve_or_fail(signature, |
0 | 697 Handle(THREAD, loader), |
698 Handle(THREAD, protection_domain), | |
699 true, CHECK_(Handle())); | |
700 | |
701 if (TraceClassResolution) { | |
702 trace_class_resolution(result); | |
703 } | |
704 | |
6983 | 705 oop nt = result->java_mirror(); |
0 | 706 return Handle(THREAD, nt); |
707 } | |
708 | |
709 | |
710 oop Reflection::new_method(methodHandle method, bool intern_name, bool for_constant_pool_access, TRAPS) { | |
711 // In jdk1.2.x, getMethods on an interface erroneously includes <clinit>, thus the complicated assert. | |
712 // Also allow sun.reflect.ConstantPool to refer to <clinit> methods as java.lang.reflect.Methods. | |
713 assert(!method()->is_initializer() || | |
714 (for_constant_pool_access && method()->is_static()) || | |
715 (method()->name() == vmSymbols::class_initializer_name() | |
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716 && method()->method_holder()->is_interface() && JDK_Version::is_jdk12x_version()), "should call new_constructor instead"); |
0 | 717 instanceKlassHandle holder (THREAD, method->method_holder()); |
718 int slot = method->method_idnum(); | |
719 | |
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720 Symbol* signature = method->signature(); |
0 | 721 int parameter_count = ArgumentCount(signature).size(); |
722 oop return_type_oop = NULL; | |
723 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, &return_type_oop, CHECK_NULL); | |
724 if (parameter_types.is_null() || return_type_oop == NULL) return NULL; | |
725 | |
726 Handle return_type(THREAD, return_type_oop); | |
727 | |
728 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL); | |
729 | |
730 if (exception_types.is_null()) return NULL; | |
731 | |
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732 Symbol* method_name = method->name(); |
0 | 733 Handle name; |
734 if (intern_name) { | |
735 // intern_name is only true with UseNewReflection | |
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736 oop name_oop = StringTable::intern(method_name, CHECK_NULL); |
0 | 737 name = Handle(THREAD, name_oop); |
738 } else { | |
739 name = java_lang_String::create_from_symbol(method_name, CHECK_NULL); | |
740 } | |
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741 if (name == NULL) return NULL; |
0 | 742 |
743 int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
744 | |
745 Handle mh = java_lang_reflect_Method::create(CHECK_NULL); | |
746 | |
747 java_lang_reflect_Method::set_clazz(mh(), holder->java_mirror()); | |
748 java_lang_reflect_Method::set_slot(mh(), slot); | |
749 java_lang_reflect_Method::set_name(mh(), name()); | |
750 java_lang_reflect_Method::set_return_type(mh(), return_type()); | |
751 java_lang_reflect_Method::set_parameter_types(mh(), parameter_types()); | |
752 java_lang_reflect_Method::set_exception_types(mh(), exception_types()); | |
753 java_lang_reflect_Method::set_modifiers(mh(), modifiers); | |
754 java_lang_reflect_Method::set_override(mh(), false); | |
755 if (java_lang_reflect_Method::has_signature_field() && | |
756 method->generic_signature() != NULL) { | |
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757 Symbol* gs = method->generic_signature(); |
0 | 758 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); |
759 java_lang_reflect_Method::set_signature(mh(), sig()); | |
760 } | |
761 if (java_lang_reflect_Method::has_annotations_field()) { | |
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762 typeArrayOop an_oop = Annotations::make_java_array(method->annotations(), CHECK_NULL); |
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763 java_lang_reflect_Method::set_annotations(mh(), an_oop); |
0 | 764 } |
765 if (java_lang_reflect_Method::has_parameter_annotations_field()) { | |
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766 typeArrayOop an_oop = Annotations::make_java_array(method->parameter_annotations(), CHECK_NULL); |
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767 java_lang_reflect_Method::set_parameter_annotations(mh(), an_oop); |
0 | 768 } |
769 if (java_lang_reflect_Method::has_annotation_default_field()) { | |
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770 typeArrayOop an_oop = Annotations::make_java_array(method->annotation_default(), CHECK_NULL); |
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771 java_lang_reflect_Method::set_annotation_default(mh(), an_oop); |
0 | 772 } |
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773 if (java_lang_reflect_Method::has_type_annotations_field()) { |
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774 typeArrayOop an_oop = Annotations::make_java_array(method->type_annotations(), CHECK_NULL); |
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775 java_lang_reflect_Method::set_type_annotations(mh(), an_oop); |
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776 } |
0 | 777 return mh(); |
778 } | |
779 | |
780 | |
781 oop Reflection::new_constructor(methodHandle method, TRAPS) { | |
782 assert(method()->is_initializer(), "should call new_method instead"); | |
783 | |
784 instanceKlassHandle holder (THREAD, method->method_holder()); | |
785 int slot = method->method_idnum(); | |
786 | |
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787 Symbol* signature = method->signature(); |
0 | 788 int parameter_count = ArgumentCount(signature).size(); |
789 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, NULL, CHECK_NULL); | |
790 if (parameter_types.is_null()) return NULL; | |
791 | |
792 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL); | |
793 if (exception_types.is_null()) return NULL; | |
794 | |
795 int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
796 | |
797 Handle ch = java_lang_reflect_Constructor::create(CHECK_NULL); | |
798 | |
799 java_lang_reflect_Constructor::set_clazz(ch(), holder->java_mirror()); | |
800 java_lang_reflect_Constructor::set_slot(ch(), slot); | |
801 java_lang_reflect_Constructor::set_parameter_types(ch(), parameter_types()); | |
802 java_lang_reflect_Constructor::set_exception_types(ch(), exception_types()); | |
803 java_lang_reflect_Constructor::set_modifiers(ch(), modifiers); | |
804 java_lang_reflect_Constructor::set_override(ch(), false); | |
805 if (java_lang_reflect_Constructor::has_signature_field() && | |
806 method->generic_signature() != NULL) { | |
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807 Symbol* gs = method->generic_signature(); |
0 | 808 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); |
809 java_lang_reflect_Constructor::set_signature(ch(), sig()); | |
810 } | |
811 if (java_lang_reflect_Constructor::has_annotations_field()) { | |
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812 typeArrayOop an_oop = Annotations::make_java_array(method->annotations(), CHECK_NULL); |
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813 java_lang_reflect_Constructor::set_annotations(ch(), an_oop); |
0 | 814 } |
815 if (java_lang_reflect_Constructor::has_parameter_annotations_field()) { | |
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816 typeArrayOop an_oop = Annotations::make_java_array(method->parameter_annotations(), CHECK_NULL); |
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817 java_lang_reflect_Constructor::set_parameter_annotations(ch(), an_oop); |
0 | 818 } |
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819 if (java_lang_reflect_Constructor::has_type_annotations_field()) { |
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820 typeArrayOop an_oop = Annotations::make_java_array(method->type_annotations(), CHECK_NULL); |
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821 java_lang_reflect_Constructor::set_type_annotations(ch(), an_oop); |
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822 } |
0 | 823 return ch(); |
824 } | |
825 | |
826 | |
827 oop Reflection::new_field(fieldDescriptor* fd, bool intern_name, TRAPS) { | |
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828 Symbol* field_name = fd->name(); |
0 | 829 Handle name; |
830 if (intern_name) { | |
831 // intern_name is only true with UseNewReflection | |
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832 oop name_oop = StringTable::intern(field_name, CHECK_NULL); |
0 | 833 name = Handle(THREAD, name_oop); |
834 } else { | |
835 name = java_lang_String::create_from_symbol(field_name, CHECK_NULL); | |
836 } | |
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837 Symbol* signature = fd->signature(); |
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838 instanceKlassHandle holder (THREAD, fd->field_holder()); |
0 | 839 Handle type = new_type(signature, holder, CHECK_NULL); |
840 Handle rh = java_lang_reflect_Field::create(CHECK_NULL); | |
841 | |
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842 java_lang_reflect_Field::set_clazz(rh(), fd->field_holder()->java_mirror()); |
0 | 843 java_lang_reflect_Field::set_slot(rh(), fd->index()); |
844 java_lang_reflect_Field::set_name(rh(), name()); | |
845 java_lang_reflect_Field::set_type(rh(), type()); | |
846 // Note the ACC_ANNOTATION bit, which is a per-class access flag, is never set here. | |
847 java_lang_reflect_Field::set_modifiers(rh(), fd->access_flags().as_int() & JVM_RECOGNIZED_FIELD_MODIFIERS); | |
848 java_lang_reflect_Field::set_override(rh(), false); | |
849 if (java_lang_reflect_Field::has_signature_field() && | |
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850 fd->has_generic_signature()) { |
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851 Symbol* gs = fd->generic_signature(); |
0 | 852 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); |
853 java_lang_reflect_Field::set_signature(rh(), sig()); | |
854 } | |
855 if (java_lang_reflect_Field::has_annotations_field()) { | |
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856 typeArrayOop an_oop = Annotations::make_java_array(fd->annotations(), CHECK_NULL); |
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857 java_lang_reflect_Field::set_annotations(rh(), an_oop); |
0 | 858 } |
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859 if (java_lang_reflect_Field::has_type_annotations_field()) { |
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860 typeArrayOop an_oop = Annotations::make_java_array(fd->type_annotations(), CHECK_NULL); |
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861 java_lang_reflect_Field::set_type_annotations(rh(), an_oop); |
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862 } |
0 | 863 return rh(); |
864 } | |
865 | |
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866 oop Reflection::new_parameter(Handle method, int index, Symbol* sym, |
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867 int flags, TRAPS) { |
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868 Handle name; |
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869 |
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870 // A null symbol here translates to the empty string |
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871 if(NULL != sym) { |
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872 name = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
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873 } else { |
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874 name = java_lang_String::create_from_str("", CHECK_NULL); |
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875 } |
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876 |
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877 Handle rh = java_lang_reflect_Parameter::create(CHECK_NULL); |
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878 java_lang_reflect_Parameter::set_name(rh(), name()); |
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879 java_lang_reflect_Parameter::set_modifiers(rh(), flags); |
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880 java_lang_reflect_Parameter::set_executable(rh(), method()); |
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881 java_lang_reflect_Parameter::set_index(rh(), index); |
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882 return rh(); |
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883 } |
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884 |
0 | 885 |
886 methodHandle Reflection::resolve_interface_call(instanceKlassHandle klass, methodHandle method, | |
887 KlassHandle recv_klass, Handle receiver, TRAPS) { | |
888 assert(!method.is_null() , "method should not be null"); | |
889 | |
890 CallInfo info; | |
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891 Symbol* signature = method->signature(); |
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892 Symbol* name = method->name(); |
0 | 893 LinkResolver::resolve_interface_call(info, receiver, recv_klass, klass, |
894 name, signature, | |
895 KlassHandle(), false, true, | |
896 CHECK_(methodHandle())); | |
897 return info.selected_method(); | |
898 } | |
899 | |
900 | |
901 oop Reflection::invoke(instanceKlassHandle klass, methodHandle reflected_method, | |
902 Handle receiver, bool override, objArrayHandle ptypes, | |
903 BasicType rtype, objArrayHandle args, bool is_method_invoke, TRAPS) { | |
904 ResourceMark rm(THREAD); | |
905 | |
906 methodHandle method; // actual method to invoke | |
907 KlassHandle target_klass; // target klass, receiver's klass for non-static | |
908 | |
909 // Ensure klass is initialized | |
910 klass->initialize(CHECK_NULL); | |
911 | |
912 bool is_static = reflected_method->is_static(); | |
913 if (is_static) { | |
914 // ignore receiver argument | |
915 method = reflected_method; | |
916 target_klass = klass; | |
917 } else { | |
918 // check for null receiver | |
919 if (receiver.is_null()) { | |
920 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
921 } | |
922 // Check class of receiver against class declaring method | |
923 if (!receiver->is_a(klass())) { | |
924 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "object is not an instance of declaring class"); | |
925 } | |
926 // target klass is receiver's klass | |
927 target_klass = KlassHandle(THREAD, receiver->klass()); | |
928 // no need to resolve if method is private or <init> | |
929 if (reflected_method->is_private() || reflected_method->name() == vmSymbols::object_initializer_name()) { | |
930 method = reflected_method; | |
931 } else { | |
932 // resolve based on the receiver | |
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933 if (reflected_method->method_holder()->is_interface()) { |
0 | 934 // resolve interface call |
935 if (ReflectionWrapResolutionErrors) { | |
936 // new default: 6531596 | |
937 // Match resolution errors with those thrown due to reflection inlining | |
938 // Linktime resolution & IllegalAccessCheck already done by Class.getMethod() | |
939 method = resolve_interface_call(klass, reflected_method, target_klass, receiver, THREAD); | |
940 if (HAS_PENDING_EXCEPTION) { | |
941 // Method resolution threw an exception; wrap it in an InvocationTargetException | |
942 oop resolution_exception = PENDING_EXCEPTION; | |
943 CLEAR_PENDING_EXCEPTION; | |
944 JavaCallArguments args(Handle(THREAD, resolution_exception)); | |
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945 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(), |
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946 vmSymbols::throwable_void_signature(), |
0 | 947 &args); |
948 } | |
949 } else { | |
950 method = resolve_interface_call(klass, reflected_method, target_klass, receiver, CHECK_(NULL)); | |
951 } | |
952 } else { | |
953 // if the method can be overridden, we resolve using the vtable index. | |
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954 assert(!reflected_method->has_itable_index(), ""); |
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955 int index = reflected_method->vtable_index(); |
0 | 956 method = reflected_method; |
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957 if (index != Method::nonvirtual_vtable_index) { |
0 | 958 // target_klass might be an arrayKlassOop but all vtables start at |
959 // the same place. The cast is to avoid virtual call and assertion. | |
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960 InstanceKlass* inst = (InstanceKlass*)target_klass(); |
0 | 961 method = methodHandle(THREAD, inst->method_at_vtable(index)); |
962 } | |
963 if (!method.is_null()) { | |
964 // Check for abstract methods as well | |
965 if (method->is_abstract()) { | |
966 // new default: 6531596 | |
967 if (ReflectionWrapResolutionErrors) { | |
968 ResourceMark rm(THREAD); | |
969 Handle h_origexception = Exceptions::new_exception(THREAD, | |
970 vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 971 Method::name_and_sig_as_C_string(target_klass(), |
0 | 972 method->name(), |
973 method->signature())); | |
974 JavaCallArguments args(h_origexception); | |
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975 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(), |
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976 vmSymbols::throwable_void_signature(), |
0 | 977 &args); |
978 } else { | |
979 ResourceMark rm(THREAD); | |
980 THROW_MSG_0(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 981 Method::name_and_sig_as_C_string(target_klass(), |
0 | 982 method->name(), |
983 method->signature())); | |
984 } | |
985 } | |
986 } | |
987 } | |
988 } | |
989 } | |
990 | |
991 // I believe this is a ShouldNotGetHere case which requires | |
992 // an internal vtable bug. If you ever get this please let Karen know. | |
993 if (method.is_null()) { | |
994 ResourceMark rm(THREAD); | |
995 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 996 Method::name_and_sig_as_C_string(klass(), |
0 | 997 reflected_method->name(), |
998 reflected_method->signature())); | |
999 } | |
1000 | |
1001 // In the JDK 1.4 reflection implementation, the security check is | |
1002 // done at the Java level | |
1003 if (!(JDK_Version::is_gte_jdk14x_version() && UseNewReflection)) { | |
1004 | |
1005 // Access checking (unless overridden by Method) | |
1006 if (!override) { | |
1007 if (!(klass->is_public() && reflected_method->is_public())) { | |
1008 bool access = Reflection::reflect_check_access(klass(), reflected_method->access_flags(), target_klass(), is_method_invoke, CHECK_NULL); | |
1009 if (!access) { | |
1010 return NULL; // exception | |
1011 } | |
1012 } | |
1013 } | |
1014 | |
1015 } // !(Universe::is_gte_jdk14x_version() && UseNewReflection) | |
1016 | |
1017 assert(ptypes->is_objArray(), "just checking"); | |
1018 int args_len = args.is_null() ? 0 : args->length(); | |
1019 // Check number of arguments | |
1020 if (ptypes->length() != args_len) { | |
1021 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "wrong number of arguments"); | |
1022 } | |
1023 | |
1024 // Create object to contain parameters for the JavaCall | |
1025 JavaCallArguments java_args(method->size_of_parameters()); | |
1026 | |
1027 if (!is_static) { | |
1028 java_args.push_oop(receiver); | |
1029 } | |
1030 | |
1031 for (int i = 0; i < args_len; i++) { | |
1032 oop type_mirror = ptypes->obj_at(i); | |
1033 oop arg = args->obj_at(i); | |
1034 if (java_lang_Class::is_primitive(type_mirror)) { | |
1035 jvalue value; | |
1036 BasicType ptype = basic_type_mirror_to_basic_type(type_mirror, CHECK_NULL); | |
1037 BasicType atype = unbox_for_primitive(arg, &value, CHECK_NULL); | |
1038 if (ptype != atype) { | |
1039 widen(&value, atype, ptype, CHECK_NULL); | |
1040 } | |
1041 switch (ptype) { | |
1042 case T_BOOLEAN: java_args.push_int(value.z); break; | |
1043 case T_CHAR: java_args.push_int(value.c); break; | |
1044 case T_BYTE: java_args.push_int(value.b); break; | |
1045 case T_SHORT: java_args.push_int(value.s); break; | |
1046 case T_INT: java_args.push_int(value.i); break; | |
1047 case T_LONG: java_args.push_long(value.j); break; | |
1048 case T_FLOAT: java_args.push_float(value.f); break; | |
1049 case T_DOUBLE: java_args.push_double(value.d); break; | |
1050 default: | |
1051 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
1052 } | |
1053 } else { | |
1054 if (arg != NULL) { | |
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1055 Klass* k = java_lang_Class::as_Klass(type_mirror); |
0 | 1056 if (!arg->is_a(k)) { |
1057 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
1058 } | |
1059 } | |
1060 Handle arg_handle(THREAD, arg); // Create handle for argument | |
1061 java_args.push_oop(arg_handle); // Push handle | |
1062 } | |
1063 } | |
1064 | |
1065 assert(java_args.size_of_parameters() == method->size_of_parameters(), "just checking"); | |
1066 | |
1067 // All oops (including receiver) is passed in as Handles. An potential oop is returned as an | |
1068 // oop (i.e., NOT as an handle) | |
1069 JavaValue result(rtype); | |
1070 JavaCalls::call(&result, method, &java_args, THREAD); | |
1071 | |
1072 if (HAS_PENDING_EXCEPTION) { | |
1073 // Method threw an exception; wrap it in an InvocationTargetException | |
1074 oop target_exception = PENDING_EXCEPTION; | |
1075 CLEAR_PENDING_EXCEPTION; | |
1076 JavaCallArguments args(Handle(THREAD, target_exception)); | |
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1077 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(), |
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1078 vmSymbols::throwable_void_signature(), |
0 | 1079 &args); |
1080 } else { | |
1081 if (rtype == T_BOOLEAN || rtype == T_BYTE || rtype == T_CHAR || rtype == T_SHORT) | |
1082 narrow((jvalue*) result.get_value_addr(), rtype, CHECK_NULL); | |
1083 return box((jvalue*) result.get_value_addr(), rtype, CHECK_NULL); | |
1084 } | |
1085 } | |
1086 | |
1087 | |
1088 void Reflection::narrow(jvalue* value, BasicType narrow_type, TRAPS) { | |
1089 switch (narrow_type) { | |
1090 case T_BOOLEAN: | |
1091 value->z = (jboolean) value->i; | |
1092 return; | |
1093 case T_BYTE: | |
1094 value->b = (jbyte) value->i; | |
1095 return; | |
1096 case T_CHAR: | |
1097 value->c = (jchar) value->i; | |
1098 return; | |
1099 case T_SHORT: | |
1100 value->s = (jshort) value->i; | |
1101 return; | |
1102 default: | |
1103 break; // fail | |
1104 } | |
1105 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); | |
1106 } | |
1107 | |
1108 | |
1109 BasicType Reflection::basic_type_mirror_to_basic_type(oop basic_type_mirror, TRAPS) { | |
1110 assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking"); | |
1111 return java_lang_Class::primitive_type(basic_type_mirror); | |
1112 } | |
1113 | |
1114 // This would be nicer if, say, java.lang.reflect.Method was a subclass | |
1115 // of java.lang.reflect.Constructor | |
1116 | |
1117 oop Reflection::invoke_method(oop method_mirror, Handle receiver, objArrayHandle args, TRAPS) { | |
1118 oop mirror = java_lang_reflect_Method::clazz(method_mirror); | |
1119 int slot = java_lang_reflect_Method::slot(method_mirror); | |
1120 bool override = java_lang_reflect_Method::override(method_mirror) != 0; | |
1121 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Method::parameter_types(method_mirror))); | |
1122 | |
1123 oop return_type_mirror = java_lang_reflect_Method::return_type(method_mirror); | |
1124 BasicType rtype; | |
1125 if (java_lang_Class::is_primitive(return_type_mirror)) { | |
1126 rtype = basic_type_mirror_to_basic_type(return_type_mirror, CHECK_NULL); | |
1127 } else { | |
1128 rtype = T_OBJECT; | |
1129 } | |
1130 | |
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1131 instanceKlassHandle klass(THREAD, java_lang_Class::as_Klass(mirror)); |
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1132 Method* m = klass->method_with_idnum(slot); |
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1133 if (m == NULL) { |
0 | 1134 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke"); |
1135 } | |
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1136 methodHandle method(THREAD, m); |
0 | 1137 |
1138 return invoke(klass, method, receiver, override, ptypes, rtype, args, true, THREAD); | |
1139 } | |
1140 | |
1141 | |
1142 oop Reflection::invoke_constructor(oop constructor_mirror, objArrayHandle args, TRAPS) { | |
1143 oop mirror = java_lang_reflect_Constructor::clazz(constructor_mirror); | |
1144 int slot = java_lang_reflect_Constructor::slot(constructor_mirror); | |
1145 bool override = java_lang_reflect_Constructor::override(constructor_mirror) != 0; | |
1146 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Constructor::parameter_types(constructor_mirror))); | |
1147 | |
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1148 instanceKlassHandle klass(THREAD, java_lang_Class::as_Klass(mirror)); |
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1149 Method* m = klass->method_with_idnum(slot); |
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1150 if (m == NULL) { |
0 | 1151 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke"); |
1152 } | |
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1153 methodHandle method(THREAD, m); |
0 | 1154 assert(method->name() == vmSymbols::object_initializer_name(), "invalid constructor"); |
1155 | |
1156 // Make sure klass gets initialize | |
1157 klass->initialize(CHECK_NULL); | |
1158 | |
1159 // Create new instance (the receiver) | |
1160 klass->check_valid_for_instantiation(false, CHECK_NULL); | |
1161 Handle receiver = klass->allocate_instance_handle(CHECK_NULL); | |
1162 | |
1163 // Ignore result from call and return receiver | |
1164 invoke(klass, method, receiver, override, ptypes, T_VOID, args, false, CHECK_NULL); | |
1165 return receiver(); | |
1166 } |