1 /*
2 * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/javaClasses.hpp"
27 #include "classfile/moduleEntry.hpp"
28 #include "classfile/packageEntry.hpp"
29 #include "classfile/stringTable.hpp"
30 #include "classfile/systemDictionary.hpp"
31 #include "classfile/verifier.hpp"
32 #include "classfile/vmSymbols.hpp"
33 #include "interpreter/linkResolver.hpp"
34 #include "memory/oopFactory.hpp"
35 #include "memory/resourceArea.hpp"
36 #include "memory/universe.inline.hpp"
37 #include "oops/instanceKlass.hpp"
38 #include "oops/objArrayKlass.hpp"
39 #include "oops/objArrayOop.inline.hpp"
40 #include "oops/typeArrayOop.inline.hpp"
41 #include "oops/oop.inline.hpp"
42 #include "prims/jvm.h"
43 #include "prims/jvmtiExport.hpp"
44 #include "runtime/arguments.hpp"
45 #include "runtime/handles.inline.hpp"
46 #include "runtime/javaCalls.hpp"
47 #include "runtime/reflection.hpp"
48 #include "runtime/reflectionUtils.hpp"
49 #include "runtime/signature.hpp"
50 #include "runtime/vframe.hpp"
51
52 static void trace_class_resolution(const Klass* to_class) {
53 ResourceMark rm;
54 int line_number = -1;
55 const char * source_file = NULL;
56 Klass* caller = NULL;
57 JavaThread* jthread = JavaThread::current();
58 if (jthread->has_last_Java_frame()) {
59 vframeStream vfst(jthread);
60 // skip over any frames belonging to java.lang.Class
61 while (!vfst.at_end() &&
62 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class()) {
63 vfst.next();
64 }
65 if (!vfst.at_end()) {
66 // this frame is a likely suspect
67 caller = vfst.method()->method_holder();
68 line_number = vfst.method()->line_number_from_bci(vfst.bci());
69 Symbol* s = vfst.method()->method_holder()->source_file_name();
70 if (s != NULL) {
71 source_file = s->as_C_string();
72 }
73 }
74 }
75 if (caller != NULL) {
76 const char * from = caller->external_name();
77 const char * to = to_class->external_name();
78 // print in a single call to reduce interleaving between threads
79 if (source_file != NULL) {
80 log_debug(class, resolve)("%s %s %s:%d (reflection)", from, to, source_file, line_number);
81 } else {
82 log_debug(class, resolve)("%s %s (reflection)", from, to);
83 }
84 }
85 }
86
87
88 oop Reflection::box(jvalue* value, BasicType type, TRAPS) {
89 if (type == T_VOID) {
90 return NULL;
91 }
92 if (type == T_OBJECT || type == T_ARRAY) {
93 // regular objects are not boxed
94 return (oop) value->l;
95 }
96 oop result = java_lang_boxing_object::create(type, value, CHECK_NULL);
97 if (result == NULL) {
98 THROW_(vmSymbols::java_lang_IllegalArgumentException(), result);
99 }
100 return result;
101 }
102
103
104 BasicType Reflection::unbox_for_primitive(oop box, jvalue* value, TRAPS) {
105 if (box == NULL) {
106 THROW_(vmSymbols::java_lang_IllegalArgumentException(), T_ILLEGAL);
107 }
108 return java_lang_boxing_object::get_value(box, value);
109 }
110
111 BasicType Reflection::unbox_for_regular_object(oop box, jvalue* value) {
112 // Note: box is really the unboxed oop. It might even be a Short, etc.!
113 value->l = (jobject) box;
114 return T_OBJECT;
115 }
116
117
118 void Reflection::widen(jvalue* value, BasicType current_type, BasicType wide_type, TRAPS) {
119 assert(wide_type != current_type, "widen should not be called with identical types");
120 switch (wide_type) {
121 case T_BOOLEAN:
122 case T_BYTE:
123 case T_CHAR:
124 break; // fail
125 case T_SHORT:
126 switch (current_type) {
127 case T_BYTE:
128 value->s = (jshort) value->b;
129 return;
130 }
131 break; // fail
132 case T_INT:
133 switch (current_type) {
134 case T_BYTE:
135 value->i = (jint) value->b;
136 return;
137 case T_CHAR:
138 value->i = (jint) value->c;
139 return;
140 case T_SHORT:
141 value->i = (jint) value->s;
142 return;
143 }
144 break; // fail
145 case T_LONG:
146 switch (current_type) {
147 case T_BYTE:
148 value->j = (jlong) value->b;
149 return;
150 case T_CHAR:
151 value->j = (jlong) value->c;
152 return;
153 case T_SHORT:
154 value->j = (jlong) value->s;
155 return;
156 case T_INT:
157 value->j = (jlong) value->i;
158 return;
159 }
160 break; // fail
161 case T_FLOAT:
162 switch (current_type) {
163 case T_BYTE:
164 value->f = (jfloat) value->b;
165 return;
166 case T_CHAR:
167 value->f = (jfloat) value->c;
168 return;
169 case T_SHORT:
170 value->f = (jfloat) value->s;
171 return;
172 case T_INT:
173 value->f = (jfloat) value->i;
174 return;
175 case T_LONG:
176 value->f = (jfloat) value->j;
177 return;
178 }
179 break; // fail
180 case T_DOUBLE:
181 switch (current_type) {
182 case T_BYTE:
183 value->d = (jdouble) value->b;
184 return;
185 case T_CHAR:
186 value->d = (jdouble) value->c;
187 return;
188 case T_SHORT:
189 value->d = (jdouble) value->s;
190 return;
191 case T_INT:
192 value->d = (jdouble) value->i;
193 return;
194 case T_FLOAT:
195 value->d = (jdouble) value->f;
196 return;
197 case T_LONG:
198 value->d = (jdouble) value->j;
199 return;
200 }
201 break; // fail
202 default:
203 break; // fail
204 }
205 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");
206 }
207
208
209 BasicType Reflection::array_get(jvalue* value, arrayOop a, int index, TRAPS) {
210 if (!a->is_within_bounds(index)) {
211 THROW_(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), T_ILLEGAL);
212 }
213 if (a->is_objArray()) {
214 value->l = (jobject) objArrayOop(a)->obj_at(index);
215 return T_OBJECT;
216 } else {
217 assert(a->is_typeArray(), "just checking");
218 BasicType type = TypeArrayKlass::cast(a->klass())->element_type();
219 switch (type) {
220 case T_BOOLEAN:
221 value->z = typeArrayOop(a)->bool_at(index);
222 break;
223 case T_CHAR:
224 value->c = typeArrayOop(a)->char_at(index);
225 break;
226 case T_FLOAT:
227 value->f = typeArrayOop(a)->float_at(index);
228 break;
229 case T_DOUBLE:
230 value->d = typeArrayOop(a)->double_at(index);
231 break;
232 case T_BYTE:
233 value->b = typeArrayOop(a)->byte_at(index);
234 break;
235 case T_SHORT:
236 value->s = typeArrayOop(a)->short_at(index);
237 break;
238 case T_INT:
239 value->i = typeArrayOop(a)->int_at(index);
240 break;
241 case T_LONG:
242 value->j = typeArrayOop(a)->long_at(index);
243 break;
244 default:
245 return T_ILLEGAL;
246 }
247 return type;
248 }
249 }
250
251
252 void Reflection::array_set(jvalue* value, arrayOop a, int index, BasicType value_type, TRAPS) {
253 if (!a->is_within_bounds(index)) {
254 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
255 }
256 if (a->is_objArray()) {
257 if (value_type == T_OBJECT) {
258 oop obj = (oop) value->l;
259 if (obj != NULL) {
260 Klass* element_klass = ObjArrayKlass::cast(a->klass())->element_klass();
261 if (!obj->is_a(element_klass)) {
262 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "array element type mismatch");
263 }
264 }
265 objArrayOop(a)->obj_at_put(index, obj);
266 }
267 } else {
268 assert(a->is_typeArray(), "just checking");
269 BasicType array_type = TypeArrayKlass::cast(a->klass())->element_type();
270 if (array_type != value_type) {
271 // The widen operation can potentially throw an exception, but cannot block,
272 // so typeArrayOop a is safe if the call succeeds.
273 widen(value, value_type, array_type, CHECK);
274 }
275 switch (array_type) {
276 case T_BOOLEAN:
277 typeArrayOop(a)->bool_at_put(index, value->z);
278 break;
279 case T_CHAR:
280 typeArrayOop(a)->char_at_put(index, value->c);
281 break;
282 case T_FLOAT:
283 typeArrayOop(a)->float_at_put(index, value->f);
284 break;
285 case T_DOUBLE:
286 typeArrayOop(a)->double_at_put(index, value->d);
287 break;
288 case T_BYTE:
289 typeArrayOop(a)->byte_at_put(index, value->b);
290 break;
291 case T_SHORT:
292 typeArrayOop(a)->short_at_put(index, value->s);
293 break;
294 case T_INT:
295 typeArrayOop(a)->int_at_put(index, value->i);
296 break;
297 case T_LONG:
298 typeArrayOop(a)->long_at_put(index, value->j);
299 break;
300 default:
301 THROW(vmSymbols::java_lang_IllegalArgumentException());
302 }
303 }
304 }
305
306 static Klass* basic_type_mirror_to_arrayklass(oop basic_type_mirror, TRAPS) {
307 assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking");
308 BasicType type = java_lang_Class::primitive_type(basic_type_mirror);
309 if (type == T_VOID) {
310 THROW_0(vmSymbols::java_lang_IllegalArgumentException());
311 }
312 else {
313 return Universe::typeArrayKlassObj(type);
314 }
315 }
316
317 #ifdef ASSERT
318 static oop basic_type_arrayklass_to_mirror(Klass* basic_type_arrayklass, TRAPS) {
319 BasicType type = TypeArrayKlass::cast(basic_type_arrayklass)->element_type();
320 return Universe::java_mirror(type);
321 }
322 #endif
323
324 arrayOop Reflection::reflect_new_array(oop element_mirror, jint length, TRAPS) {
325 if (element_mirror == NULL) {
326 THROW_0(vmSymbols::java_lang_NullPointerException());
327 }
328 if (length < 0) {
329 THROW_0(vmSymbols::java_lang_NegativeArraySizeException());
330 }
331 if (java_lang_Class::is_primitive(element_mirror)) {
332 Klass* tak = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL);
333 return TypeArrayKlass::cast(tak)->allocate(length, THREAD);
334 } else {
335 Klass* k = java_lang_Class::as_Klass(element_mirror);
336 if (k->is_array_klass() && ArrayKlass::cast(k)->dimension() >= MAX_DIM) {
337 THROW_0(vmSymbols::java_lang_IllegalArgumentException());
338 }
339 return oopFactory::new_objArray(k, length, THREAD);
340 }
341 }
342
343
344 arrayOop Reflection::reflect_new_multi_array(oop element_mirror, typeArrayOop dim_array, TRAPS) {
345 assert(dim_array->is_typeArray(), "just checking");
346 assert(TypeArrayKlass::cast(dim_array->klass())->element_type() == T_INT, "just checking");
347
348 if (element_mirror == NULL) {
349 THROW_0(vmSymbols::java_lang_NullPointerException());
350 }
351
352 int len = dim_array->length();
353 if (len <= 0 || len > MAX_DIM) {
354 THROW_0(vmSymbols::java_lang_IllegalArgumentException());
355 }
356
357 jint dimensions[MAX_DIM]; // C array copy of intArrayOop
358 for (int i = 0; i < len; i++) {
359 int d = dim_array->int_at(i);
360 if (d < 0) {
361 THROW_0(vmSymbols::java_lang_NegativeArraySizeException());
362 }
363 dimensions[i] = d;
364 }
365
366 Klass* klass;
367 int dim = len;
368 if (java_lang_Class::is_primitive(element_mirror)) {
369 klass = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL);
370 } else {
371 klass = java_lang_Class::as_Klass(element_mirror);
372 if (klass->is_array_klass()) {
373 int k_dim = ArrayKlass::cast(klass)->dimension();
374 if (k_dim + len > MAX_DIM) {
375 THROW_0(vmSymbols::java_lang_IllegalArgumentException());
376 }
377 dim += k_dim;
378 }
379 }
380 klass = klass->array_klass(dim, CHECK_NULL);
381 oop obj = ArrayKlass::cast(klass)->multi_allocate(len, dimensions, CHECK_NULL);
382 assert(obj->is_array(), "just checking");
383 return arrayOop(obj);
384 }
385
386
387 oop Reflection::array_component_type(oop mirror, TRAPS) {
388 if (java_lang_Class::is_primitive(mirror)) {
389 return NULL;
390 }
391
392 Klass* klass = java_lang_Class::as_Klass(mirror);
393 if (!klass->is_array_klass()) {
394 return NULL;
395 }
396
397 oop result = java_lang_Class::component_mirror(mirror);
398 #ifdef ASSERT
399 oop result2 = NULL;
400 if (ArrayKlass::cast(klass)->dimension() == 1) {
401 if (klass->is_typeArray_klass()) {
402 result2 = basic_type_arrayklass_to_mirror(klass, CHECK_NULL);
403 } else {
404 result2 = ObjArrayKlass::cast(klass)->element_klass()->java_mirror();
405 }
406 } else {
407 Klass* lower_dim = ArrayKlass::cast(klass)->lower_dimension();
408 assert(lower_dim->is_array_klass(), "just checking");
409 result2 = lower_dim->java_mirror();
410 }
411 assert(result == result2, "results must be consistent");
412 #endif //ASSERT
413 return result;
414 }
415
416 static bool under_host_klass(const InstanceKlass* ik, const InstanceKlass* host_klass) {
417 DEBUG_ONLY(int inf_loop_check = 1000 * 1000 * 1000);
418 for (;;) {
419 const InstanceKlass* hc = ik->host_klass();
420 if (hc == NULL) return false;
421 if (hc == host_klass) return true;
422 ik = hc;
423
424 // There's no way to make a host class loop short of patching memory.
425 // Therefore there cannot be a loop here unless there's another bug.
426 // Still, let's check for it.
427 assert(--inf_loop_check > 0, "no host_klass loop");
428 }
429 }
430
431 static bool can_relax_access_check_for(const Klass* accessor,
432 const Klass* accessee,
433 bool classloader_only) {
434
435 const InstanceKlass* accessor_ik = InstanceKlass::cast(accessor);
436 const InstanceKlass* accessee_ik = InstanceKlass::cast(accessee);
437
438 // If either is on the other's host_klass chain, access is OK,
439 // because one is inside the other.
440 if (under_host_klass(accessor_ik, accessee_ik) ||
441 under_host_klass(accessee_ik, accessor_ik))
442 return true;
443
444 if ((RelaxAccessControlCheck &&
445 accessor_ik->major_version() < Verifier::NO_RELAX_ACCESS_CTRL_CHECK_VERSION &&
446 accessee_ik->major_version() < Verifier::NO_RELAX_ACCESS_CTRL_CHECK_VERSION) ||
447 (accessor_ik->major_version() < Verifier::STRICTER_ACCESS_CTRL_CHECK_VERSION &&
448 accessee_ik->major_version() < Verifier::STRICTER_ACCESS_CTRL_CHECK_VERSION)) {
449 return classloader_only &&
450 Verifier::relax_access_for(accessor_ik->class_loader()) &&
451 accessor_ik->protection_domain() == accessee_ik->protection_domain() &&
452 accessor_ik->class_loader() == accessee_ik->class_loader();
453 }
454
455 return false;
456 }
457
458 /*
459 Type Accessibility check for public types: Callee Type T is accessible to Caller Type S if:
460
461 Callee T in Callee T in package PT,
462 unnamed module runtime module MT
463 ------------------------------------------------------------------------------------------------
464
465 Caller S in package If MS is loose: YES If same classloader/package (PS == PT): YES
466 PS, runtime module MS If MS can read T's If same runtime module: (MS == MT): YES
467 unnamed module: YES
468 Else if (MS can read MT (establish readability) &&
469 ((MT exports PT to MS or to all modules) ||
470 (MT is open))): YES
471
472 ------------------------------------------------------------------------------------------------
473 Caller S in unnamed YES Readability exists because unnamed module
474 module UM "reads" all modules
475 if (MT exports PT to UM or to all modules): YES
476
477 ------------------------------------------------------------------------------------------------
478
479 Note: a loose module is a module that can read all current and future unnamed modules.
480 */
481 Reflection::VerifyClassAccessResults Reflection::verify_class_access(
482 const Klass* current_class, const InstanceKlass* new_class, bool classloader_only) {
483
484 // Verify that current_class can access new_class. If the classloader_only
485 // flag is set, we automatically allow any accesses in which current_class
486 // doesn't have a classloader.
487 if ((current_class == NULL) ||
488 (current_class == new_class) ||
489 is_same_class_package(current_class, new_class)) {
490 return ACCESS_OK;
491 }
492 // Allow all accesses from jdk/internal/reflect/MagicAccessorImpl subclasses to
493 // succeed trivially.
494 if (current_class->is_subclass_of(SystemDictionary::reflect_MagicAccessorImpl_klass())) {
495 return ACCESS_OK;
496 }
497
498 // module boundaries
499 if (new_class->is_public()) {
500 // Ignore modules for DumpSharedSpaces because we do not have any package
501 // or module information for modules other than java.base.
502 if (DumpSharedSpaces) {
503 return ACCESS_OK;
504 }
505
506 // Find the module entry for current_class, the accessor
507 ModuleEntry* module_from = current_class->module();
508 // Find the module entry for new_class, the accessee
509 ModuleEntry* module_to = new_class->module();
510
511 // both in same (possibly unnamed) module
512 if (module_from == module_to) {
513 return ACCESS_OK;
514 }
515
516 // Acceptable access to a type in an unnamed module. Note that since
517 // unnamed modules can read all unnamed modules, this also handles the
518 // case where module_from is also unnamed but in a different class loader.
519 if (!module_to->is_named() &&
520 (module_from->can_read_all_unnamed() || module_from->can_read(module_to))) {
521 return ACCESS_OK;
522 }
523
524 // Establish readability, check if module_from is allowed to read module_to.
525 if (!module_from->can_read(module_to)) {
526 return MODULE_NOT_READABLE;
527 }
528
529 // Access is allowed if module_to is open, i.e. all its packages are unqualifiedly exported
530 if (module_to->is_open()) {
531 return ACCESS_OK;
532 }
533
534 PackageEntry* package_to = new_class->package();
535 assert(package_to != NULL, "can not obtain new_class' package");
536
537 {
538 MutexLocker m1(Module_lock);
539
540 // Once readability is established, if module_to exports T unqualifiedly,
541 // (to all modules), than whether module_from is in the unnamed module
542 // or not does not matter, access is allowed.
543 if (package_to->is_unqual_exported()) {
544 return ACCESS_OK;
545 }
546
547 // Access is allowed if both 1 & 2 hold:
548 // 1. Readability, module_from can read module_to (established above).
549 // 2. Either module_to exports T to module_from qualifiedly.
550 // or
551 // module_to exports T to all unnamed modules and module_from is unnamed.
552 // or
553 // module_to exports T unqualifiedly to all modules (checked above).
554 if (!package_to->is_qexported_to(module_from)) {
555 return TYPE_NOT_EXPORTED;
556 }
557 }
558 return ACCESS_OK;
559 }
560
561 if (can_relax_access_check_for(current_class, new_class, classloader_only)) {
562 return ACCESS_OK;
563 }
564 return OTHER_PROBLEM;
565 }
566
567 // Return an error message specific to the specified Klass*'s and result.
568 // This function must be called from within a block containing a ResourceMark.
569 char* Reflection::verify_class_access_msg(const Klass* current_class,
570 const InstanceKlass* new_class,
571 VerifyClassAccessResults result) {
572 assert(result != ACCESS_OK, "must be failure result");
573 char * msg = NULL;
574 if (result != OTHER_PROBLEM && new_class != NULL && current_class != NULL) {
575 // Find the module entry for current_class, the accessor
576 ModuleEntry* module_from = current_class->module();
577 const char * module_from_name = module_from->is_named() ? module_from->name()->as_C_string() : UNNAMED_MODULE;
578 const char * current_class_name = current_class->external_name();
579
580 // Find the module entry for new_class, the accessee
581 ModuleEntry* module_to = NULL;
582 module_to = new_class->module();
583 const char * module_to_name = module_to->is_named() ? module_to->name()->as_C_string() : UNNAMED_MODULE;
584 const char * new_class_name = new_class->external_name();
585
586 if (result == MODULE_NOT_READABLE) {
587 assert(module_from->is_named(), "Unnamed modules can read all modules");
588 if (module_to->is_named()) {
589 size_t len = 100 + strlen(current_class_name) + 2*strlen(module_from_name) +
590 strlen(new_class_name) + 2*strlen(module_to_name);
591 msg = NEW_RESOURCE_ARRAY(char, len);
592 jio_snprintf(msg, len - 1,
593 "class %s (in module %s) cannot access class %s (in module %s) because module %s does not read module %s",
594 current_class_name, module_from_name, new_class_name,
595 module_to_name, module_from_name, module_to_name);
596 } else {
597 jobject jlm = module_to->module();
598 assert(jlm != NULL, "Null jlm in module_to ModuleEntry");
599 intptr_t identity_hash = JNIHandles::resolve(jlm)->identity_hash();
600 size_t len = 160 + strlen(current_class_name) + 2*strlen(module_from_name) +
601 strlen(new_class_name) + 2*sizeof(uintx);
602 msg = NEW_RESOURCE_ARRAY(char, len);
603 jio_snprintf(msg, len - 1,
604 "class %s (in module %s) cannot access class %s (in unnamed module @" SIZE_FORMAT_HEX ") because module %s does not read unnamed module @" SIZE_FORMAT_HEX,
605 current_class_name, module_from_name, new_class_name, uintx(identity_hash),
606 module_from_name, uintx(identity_hash));
607 }
608
609 } else if (result == TYPE_NOT_EXPORTED) {
610 assert(new_class->package() != NULL,
611 "Unnamed packages are always exported");
612 const char * package_name =
613 new_class->package()->name()->as_klass_external_name();
614 assert(module_to->is_named(), "Unnamed modules export all packages");
615 if (module_from->is_named()) {
616 size_t len = 118 + strlen(current_class_name) + 2*strlen(module_from_name) +
617 strlen(new_class_name) + 2*strlen(module_to_name) + strlen(package_name);
618 msg = NEW_RESOURCE_ARRAY(char, len);
619 jio_snprintf(msg, len - 1,
620 "class %s (in module %s) cannot access class %s (in module %s) because module %s does not export %s to module %s",
621 current_class_name, module_from_name, new_class_name,
622 module_to_name, module_to_name, package_name, module_from_name);
623 } else {
624 jobject jlm = module_from->module();
625 assert(jlm != NULL, "Null jlm in module_from ModuleEntry");
626 intptr_t identity_hash = JNIHandles::resolve(jlm)->identity_hash();
627 size_t len = 170 + strlen(current_class_name) + strlen(new_class_name) +
628 2*strlen(module_to_name) + strlen(package_name) + 2*sizeof(uintx);
629 msg = NEW_RESOURCE_ARRAY(char, len);
630 jio_snprintf(msg, len - 1,
631 "class %s (in unnamed module @" SIZE_FORMAT_HEX ") cannot access class %s (in module %s) because module %s does not export %s to unnamed module @" SIZE_FORMAT_HEX,
632 current_class_name, uintx(identity_hash), new_class_name, module_to_name,
633 module_to_name, package_name, uintx(identity_hash));
634 }
635 } else {
636 ShouldNotReachHere();
637 }
638 } // result != OTHER_PROBLEM...
639 return msg;
640 }
641
642 bool Reflection::verify_field_access(const Klass* current_class,
643 const Klass* resolved_class,
644 const Klass* field_class,
645 AccessFlags access,
646 bool classloader_only,
647 bool protected_restriction) {
648 // Verify that current_class can access a field of field_class, where that
649 // field's access bits are "access". We assume that we've already verified
650 // that current_class can access field_class.
651 //
652 // If the classloader_only flag is set, we automatically allow any accesses
653 // in which current_class doesn't have a classloader.
654 //
655 // "resolved_class" is the runtime type of "field_class". Sometimes we don't
656 // need this distinction (e.g. if all we have is the runtime type, or during
657 // class file parsing when we only care about the static type); in that case
658 // callers should ensure that resolved_class == field_class.
659 //
660 if ((current_class == NULL) ||
661 (current_class == field_class) ||
662 access.is_public()) {
663 return true;
664 }
665
666 const Klass* host_class = current_class;
667 if (host_class->is_instance_klass() &&
668 InstanceKlass::cast(host_class)->is_anonymous()) {
669 host_class = InstanceKlass::cast(host_class)->host_klass();
670 assert(host_class != NULL, "Anonymous class has null host class");
671 assert(!(host_class->is_instance_klass() &&
672 InstanceKlass::cast(host_class)->is_anonymous()),
673 "host_class should not be anonymous");
674 }
675 if (host_class == field_class) {
676 return true;
677 }
678
679 if (access.is_protected()) {
680 if (!protected_restriction) {
681 // See if current_class (or outermost host class) is a subclass of field_class
682 // An interface may not access protected members of j.l.Object
683 if (!host_class->is_interface() && host_class->is_subclass_of(field_class)) {
684 if (access.is_static() || // static fields are ok, see 6622385
685 current_class == resolved_class ||
686 field_class == resolved_class ||
687 host_class->is_subclass_of(resolved_class) ||
688 resolved_class->is_subclass_of(host_class)) {
689 return true;
690 }
691 }
692 }
693 }
694
695 if (!access.is_private() && is_same_class_package(current_class, field_class)) {
696 return true;
697 }
698
699 // Allow all accesses from jdk/internal/reflect/MagicAccessorImpl subclasses to
700 // succeed trivially.
701 if (current_class->is_subclass_of(SystemDictionary::reflect_MagicAccessorImpl_klass())) {
702 return true;
703 }
704
705 return can_relax_access_check_for(
706 current_class, field_class, classloader_only);
707 }
708
709 bool Reflection::is_same_class_package(const Klass* class1, const Klass* class2) {
710 return InstanceKlass::cast(class1)->is_same_class_package(class2);
711 }
712
713 // Checks that the 'outer' klass has declared 'inner' as being an inner klass. If not,
714 // throw an incompatible class change exception
715 // If inner_is_member, require the inner to be a member of the outer.
716 // If !inner_is_member, require the inner to be anonymous (a non-member).
717 // Caller is responsible for figuring out in advance which case must be true.
718 void Reflection::check_for_inner_class(const InstanceKlass* outer, const InstanceKlass* inner,
719 bool inner_is_member, TRAPS) {
720 InnerClassesIterator iter(outer);
721 constantPoolHandle cp (THREAD, outer->constants());
722 for (; !iter.done(); iter.next()) {
723 int ioff = iter.inner_class_info_index();
724 int ooff = iter.outer_class_info_index();
725
726 if (inner_is_member && ioff != 0 && ooff != 0) {
727 Klass* o = cp->klass_at(ooff, CHECK);
728 if (o == outer) {
729 Klass* i = cp->klass_at(ioff, CHECK);
730 if (i == inner) {
731 return;
732 }
733 }
734 }
735 if (!inner_is_member && ioff != 0 && ooff == 0 &&
736 cp->klass_name_at_matches(inner, ioff)) {
737 Klass* i = cp->klass_at(ioff, CHECK);
738 if (i == inner) {
739 return;
740 }
741 }
742 }
743
744 // 'inner' not declared as an inner klass in outer
745 ResourceMark rm(THREAD);
746 Exceptions::fthrow(
747 THREAD_AND_LOCATION,
748 vmSymbols::java_lang_IncompatibleClassChangeError(),
749 "%s and %s disagree on InnerClasses attribute",
750 outer->external_name(),
751 inner->external_name()
752 );
753 }
754
755 // Utility method converting a single SignatureStream element into java.lang.Class instance
756 static oop get_mirror_from_signature(methodHandle method,
757 SignatureStream* ss,
758 TRAPS) {
759
760
761 if (T_OBJECT == ss->type() || T_ARRAY == ss->type()) {
762 Symbol* name = ss->as_symbol(CHECK_NULL);
763 oop loader = method->method_holder()->class_loader();
764 oop protection_domain = method->method_holder()->protection_domain();
765 const Klass* k = SystemDictionary::resolve_or_fail(name,
766 Handle(THREAD, loader),
767 Handle(THREAD, protection_domain),
768 true,
769 CHECK_NULL);
770 if (log_is_enabled(Debug, class, resolve)) {
771 trace_class_resolution(k);
772 }
773 return k->java_mirror();
774 }
775
776 assert(ss->type() != T_VOID || ss->at_return_type(),
777 "T_VOID should only appear as return type");
778
779 return java_lang_Class::primitive_mirror(ss->type());
780 }
781
782 static objArrayHandle get_parameter_types(methodHandle method,
783 int parameter_count,
784 oop* return_type,
785 TRAPS) {
786 // Allocate array holding parameter types (java.lang.Class instances)
787 objArrayOop m = oopFactory::new_objArray(SystemDictionary::Class_klass(), parameter_count, CHECK_(objArrayHandle()));
788 objArrayHandle mirrors(THREAD, m);
789 int index = 0;
790 // Collect parameter types
791 ResourceMark rm(THREAD);
792 Symbol* signature = method->signature();
793 SignatureStream ss(signature);
794 while (!ss.at_return_type()) {
795 oop mirror = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle()));
796 mirrors->obj_at_put(index++, mirror);
797 ss.next();
798 }
799 assert(index == parameter_count, "invalid parameter count");
800 if (return_type != NULL) {
801 // Collect return type as well
802 assert(ss.at_return_type(), "return type should be present");
803 *return_type = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle()));
804 }
805 return mirrors;
806 }
807
808 static objArrayHandle get_exception_types(methodHandle method, TRAPS) {
809 return method->resolved_checked_exceptions(THREAD);
810 }
811
812 static Handle new_type(Symbol* signature, Klass* k, TRAPS) {
813 // Basic types
814 BasicType type = vmSymbols::signature_type(signature);
815 if (type != T_OBJECT) {
816 return Handle(THREAD, Universe::java_mirror(type));
817 }
818
819 Klass* result =
820 SystemDictionary::resolve_or_fail(signature,
821 Handle(THREAD, k->class_loader()),
822 Handle(THREAD, k->protection_domain()),
823 true, CHECK_(Handle()));
824
825 if (log_is_enabled(Debug, class, resolve)) {
826 trace_class_resolution(result);
827 }
828
829 oop nt = result->java_mirror();
830 return Handle(THREAD, nt);
831 }
832
833
834 oop Reflection::new_method(const methodHandle& method, bool for_constant_pool_access, TRAPS) {
835 // Allow sun.reflect.ConstantPool to refer to <clinit> methods as java.lang.reflect.Methods.
836 assert(!method()->is_initializer() ||
837 (for_constant_pool_access && method()->is_static()),
838 "should call new_constructor instead");
839 InstanceKlass* holder = method->method_holder();
840 int slot = method->method_idnum();
841
842 Symbol* signature = method->signature();
843 int parameter_count = ArgumentCount(signature).size();
844 oop return_type_oop = NULL;
845 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, &return_type_oop, CHECK_NULL);
846 if (parameter_types.is_null() || return_type_oop == NULL) return NULL;
847
848 Handle return_type(THREAD, return_type_oop);
849
850 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL);
851
852 if (exception_types.is_null()) return NULL;
853
854 Symbol* method_name = method->name();
855 oop name_oop = StringTable::intern(method_name, CHECK_NULL);
856 Handle name = Handle(THREAD, name_oop);
857 if (name == NULL) return NULL;
858
859 const int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
860
861 Handle mh = java_lang_reflect_Method::create(CHECK_NULL);
862
863 java_lang_reflect_Method::set_clazz(mh(), holder->java_mirror());
864 java_lang_reflect_Method::set_slot(mh(), slot);
865 java_lang_reflect_Method::set_name(mh(), name());
866 java_lang_reflect_Method::set_return_type(mh(), return_type());
867 java_lang_reflect_Method::set_parameter_types(mh(), parameter_types());
868 java_lang_reflect_Method::set_exception_types(mh(), exception_types());
869 java_lang_reflect_Method::set_modifiers(mh(), modifiers);
870 java_lang_reflect_Method::set_override(mh(), false);
871 if (java_lang_reflect_Method::has_signature_field() &&
872 method->generic_signature() != NULL) {
873 Symbol* gs = method->generic_signature();
874 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL);
875 java_lang_reflect_Method::set_signature(mh(), sig());
876 }
877 if (java_lang_reflect_Method::has_annotations_field()) {
878 typeArrayOop an_oop = Annotations::make_java_array(method->annotations(), CHECK_NULL);
879 java_lang_reflect_Method::set_annotations(mh(), an_oop);
880 }
881 if (java_lang_reflect_Method::has_parameter_annotations_field()) {
882 typeArrayOop an_oop = Annotations::make_java_array(method->parameter_annotations(), CHECK_NULL);
883 java_lang_reflect_Method::set_parameter_annotations(mh(), an_oop);
884 }
885 if (java_lang_reflect_Method::has_annotation_default_field()) {
886 typeArrayOop an_oop = Annotations::make_java_array(method->annotation_default(), CHECK_NULL);
887 java_lang_reflect_Method::set_annotation_default(mh(), an_oop);
888 }
889 if (java_lang_reflect_Method::has_type_annotations_field()) {
890 typeArrayOop an_oop = Annotations::make_java_array(method->type_annotations(), CHECK_NULL);
891 java_lang_reflect_Method::set_type_annotations(mh(), an_oop);
892 }
893 return mh();
894 }
895
896
897 oop Reflection::new_constructor(const methodHandle& method, TRAPS) {
898 assert(method()->is_initializer(), "should call new_method instead");
899
900 InstanceKlass* holder = method->method_holder();
901 int slot = method->method_idnum();
902
903 Symbol* signature = method->signature();
904 int parameter_count = ArgumentCount(signature).size();
905 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, NULL, CHECK_NULL);
906 if (parameter_types.is_null()) return NULL;
907
908 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL);
909 if (exception_types.is_null()) return NULL;
910
911 const int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
912
913 Handle ch = java_lang_reflect_Constructor::create(CHECK_NULL);
914
915 java_lang_reflect_Constructor::set_clazz(ch(), holder->java_mirror());
916 java_lang_reflect_Constructor::set_slot(ch(), slot);
917 java_lang_reflect_Constructor::set_parameter_types(ch(), parameter_types());
918 java_lang_reflect_Constructor::set_exception_types(ch(), exception_types());
919 java_lang_reflect_Constructor::set_modifiers(ch(), modifiers);
920 java_lang_reflect_Constructor::set_override(ch(), false);
921 if (java_lang_reflect_Constructor::has_signature_field() &&
922 method->generic_signature() != NULL) {
923 Symbol* gs = method->generic_signature();
924 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL);
925 java_lang_reflect_Constructor::set_signature(ch(), sig());
926 }
927 if (java_lang_reflect_Constructor::has_annotations_field()) {
928 typeArrayOop an_oop = Annotations::make_java_array(method->annotations(), CHECK_NULL);
929 java_lang_reflect_Constructor::set_annotations(ch(), an_oop);
930 }
931 if (java_lang_reflect_Constructor::has_parameter_annotations_field()) {
932 typeArrayOop an_oop = Annotations::make_java_array(method->parameter_annotations(), CHECK_NULL);
933 java_lang_reflect_Constructor::set_parameter_annotations(ch(), an_oop);
934 }
935 if (java_lang_reflect_Constructor::has_type_annotations_field()) {
936 typeArrayOop an_oop = Annotations::make_java_array(method->type_annotations(), CHECK_NULL);
937 java_lang_reflect_Constructor::set_type_annotations(ch(), an_oop);
938 }
939 return ch();
940 }
941
942
943 oop Reflection::new_field(fieldDescriptor* fd, TRAPS) {
944 Symbol* field_name = fd->name();
945 oop name_oop = StringTable::intern(field_name, CHECK_NULL);
946 Handle name = Handle(THREAD, name_oop);
947 Symbol* signature = fd->signature();
948 InstanceKlass* holder = fd->field_holder();
949 Handle type = new_type(signature, holder, CHECK_NULL);
950 Handle rh = java_lang_reflect_Field::create(CHECK_NULL);
951
952 java_lang_reflect_Field::set_clazz(rh(), fd->field_holder()->java_mirror());
953 java_lang_reflect_Field::set_slot(rh(), fd->index());
954 java_lang_reflect_Field::set_name(rh(), name());
955 java_lang_reflect_Field::set_type(rh(), type());
956 // Note the ACC_ANNOTATION bit, which is a per-class access flag, is never set here.
957 java_lang_reflect_Field::set_modifiers(rh(), fd->access_flags().as_int() & JVM_RECOGNIZED_FIELD_MODIFIERS);
958 java_lang_reflect_Field::set_override(rh(), false);
959 if (java_lang_reflect_Field::has_signature_field() &&
960 fd->has_generic_signature()) {
961 Symbol* gs = fd->generic_signature();
962 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL);
963 java_lang_reflect_Field::set_signature(rh(), sig());
964 }
965 if (java_lang_reflect_Field::has_annotations_field()) {
966 typeArrayOop an_oop = Annotations::make_java_array(fd->annotations(), CHECK_NULL);
967 java_lang_reflect_Field::set_annotations(rh(), an_oop);
968 }
969 if (java_lang_reflect_Field::has_type_annotations_field()) {
970 typeArrayOop an_oop = Annotations::make_java_array(fd->type_annotations(), CHECK_NULL);
971 java_lang_reflect_Field::set_type_annotations(rh(), an_oop);
972 }
973 return rh();
974 }
975
976 oop Reflection::new_parameter(Handle method, int index, Symbol* sym,
977 int flags, TRAPS) {
978
979 Handle rh = java_lang_reflect_Parameter::create(CHECK_NULL);
980
981 if(NULL != sym) {
982 Handle name = java_lang_String::create_from_symbol(sym, CHECK_NULL);
983 java_lang_reflect_Parameter::set_name(rh(), name());
984 } else {
985 java_lang_reflect_Parameter::set_name(rh(), NULL);
986 }
987
988 java_lang_reflect_Parameter::set_modifiers(rh(), flags);
989 java_lang_reflect_Parameter::set_executable(rh(), method());
990 java_lang_reflect_Parameter::set_index(rh(), index);
991 return rh();
992 }
993
994
995 static methodHandle resolve_interface_call(InstanceKlass* klass,
996 const methodHandle& method,
997 Klass* recv_klass,
998 Handle receiver,
999 TRAPS) {
1000
1001 assert(!method.is_null() , "method should not be null");
1002
1003 CallInfo info;
1004 Symbol* signature = method->signature();
1005 Symbol* name = method->name();
1006 LinkResolver::resolve_interface_call(info, receiver, recv_klass,
1007 LinkInfo(klass, name, signature),
1008 true,
1009 CHECK_(methodHandle()));
1010 return info.selected_method();
1011 }
1012
1013 // Conversion
1014 static BasicType basic_type_mirror_to_basic_type(oop basic_type_mirror, TRAPS) {
1015 assert(java_lang_Class::is_primitive(basic_type_mirror),
1016 "just checking");
1017 return java_lang_Class::primitive_type(basic_type_mirror);
1018 }
1019
1020 // Narrowing of basic types. Used to create correct jvalues for
1021 // boolean, byte, char and short return return values from interpreter
1022 // which are returned as ints. Throws IllegalArgumentException.
1023 static void narrow(jvalue* value, BasicType narrow_type, TRAPS) {
1024 switch (narrow_type) {
1025 case T_BOOLEAN:
1026 value->z = (jboolean) (value->i & 1);
1027 return;
1028 case T_BYTE:
1029 value->b = (jbyte)value->i;
1030 return;
1031 case T_CHAR:
1032 value->c = (jchar)value->i;
1033 return;
1034 case T_SHORT:
1035 value->s = (jshort)value->i;
1036 return;
1037 default:
1038 break; // fail
1039 }
1040 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");
1041 }
1042
1043
1044 // Method call (shared by invoke_method and invoke_constructor)
1045 static oop invoke(InstanceKlass* klass,
1046 methodHandle reflected_method,
1047 Handle receiver,
1048 bool override,
1049 objArrayHandle ptypes,
1050 BasicType rtype,
1051 objArrayHandle args,
1052 bool is_method_invoke,
1053 TRAPS) {
1054
1055 ResourceMark rm(THREAD);
1056
1057 methodHandle method; // actual method to invoke
1058 Klass* target_klass; // target klass, receiver's klass for non-static
1059
1060 // Ensure klass is initialized
1061 klass->initialize(CHECK_NULL);
1062
1063 bool is_static = reflected_method->is_static();
1064 if (is_static) {
1065 // ignore receiver argument
1066 method = reflected_method;
1067 target_klass = klass;
1068 } else {
1069 // check for null receiver
1070 if (receiver.is_null()) {
1071 THROW_0(vmSymbols::java_lang_NullPointerException());
1072 }
1073 // Check class of receiver against class declaring method
1074 if (!receiver->is_a(klass)) {
1075 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "object is not an instance of declaring class");
1076 }
1077 // target klass is receiver's klass
1078 target_klass = receiver->klass();
1079 // no need to resolve if method is private or <init>
1080 if (reflected_method->is_private() || reflected_method->name() == vmSymbols::object_initializer_name()) {
1081 method = reflected_method;
1082 } else {
1083 // resolve based on the receiver
1084 if (reflected_method->method_holder()->is_interface()) {
1085 // resolve interface call
1086 //
1087 // Match resolution errors with those thrown due to reflection inlining
1088 // Linktime resolution & IllegalAccessCheck already done by Class.getMethod()
1089 method = resolve_interface_call(klass, reflected_method, target_klass, receiver, THREAD);
1090 if (HAS_PENDING_EXCEPTION) {
1091 // Method resolution threw an exception; wrap it in an InvocationTargetException
1092 oop resolution_exception = PENDING_EXCEPTION;
1093 CLEAR_PENDING_EXCEPTION;
1094 // JVMTI has already reported the pending exception
1095 // JVMTI internal flag reset is needed in order to report InvocationTargetException
1096 if (THREAD->is_Java_thread()) {
1097 JvmtiExport::clear_detected_exception((JavaThread*)THREAD);
1098 }
1099 JavaCallArguments args(Handle(THREAD, resolution_exception));
1100 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(),
1101 vmSymbols::throwable_void_signature(),
1102 &args);
1103 }
1104 } else {
1105 // if the method can be overridden, we resolve using the vtable index.
1106 assert(!reflected_method->has_itable_index(), "");
1107 int index = reflected_method->vtable_index();
1108 method = reflected_method;
1109 if (index != Method::nonvirtual_vtable_index) {
1110 method = methodHandle(THREAD, target_klass->method_at_vtable(index));
1111 }
1112 if (!method.is_null()) {
1113 // Check for abstract methods as well
1114 if (method->is_abstract()) {
1115 // new default: 6531596
1116 ResourceMark rm(THREAD);
1117 Handle h_origexception = Exceptions::new_exception(THREAD,
1118 vmSymbols::java_lang_AbstractMethodError(),
1119 Method::name_and_sig_as_C_string(target_klass,
1120 method->name(),
1121 method->signature()));
1122 JavaCallArguments args(h_origexception);
1123 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(),
1124 vmSymbols::throwable_void_signature(),
1125 &args);
1126 }
1127 }
1128 }
1129 }
1130 }
1131
1132 // I believe this is a ShouldNotGetHere case which requires
1133 // an internal vtable bug. If you ever get this please let Karen know.
1134 if (method.is_null()) {
1135 ResourceMark rm(THREAD);
1136 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(),
1137 Method::name_and_sig_as_C_string(klass,
1138 reflected_method->name(),
1139 reflected_method->signature()));
1140 }
1141
1142 assert(ptypes->is_objArray(), "just checking");
1143 int args_len = args.is_null() ? 0 : args->length();
1144 // Check number of arguments
1145 if (ptypes->length() != args_len) {
1146 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1147 "wrong number of arguments");
1148 }
1149
1150 // Create object to contain parameters for the JavaCall
1151 JavaCallArguments java_args(method->size_of_parameters());
1152
1153 if (!is_static) {
1154 java_args.push_oop(receiver);
1155 }
1156
1157 for (int i = 0; i < args_len; i++) {
1158 oop type_mirror = ptypes->obj_at(i);
1159 oop arg = args->obj_at(i);
1160 if (java_lang_Class::is_primitive(type_mirror)) {
1161 jvalue value;
1162 BasicType ptype = basic_type_mirror_to_basic_type(type_mirror, CHECK_NULL);
1163 BasicType atype = Reflection::unbox_for_primitive(arg, &value, CHECK_NULL);
1164 if (ptype != atype) {
1165 Reflection::widen(&value, atype, ptype, CHECK_NULL);
1166 }
1167 switch (ptype) {
1168 case T_BOOLEAN: java_args.push_int(value.z); break;
1169 case T_CHAR: java_args.push_int(value.c); break;
1170 case T_BYTE: java_args.push_int(value.b); break;
1171 case T_SHORT: java_args.push_int(value.s); break;
1172 case T_INT: java_args.push_int(value.i); break;
1173 case T_LONG: java_args.push_long(value.j); break;
1174 case T_FLOAT: java_args.push_float(value.f); break;
1175 case T_DOUBLE: java_args.push_double(value.d); break;
1176 default:
1177 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");
1178 }
1179 } else {
1180 if (arg != NULL) {
1181 Klass* k = java_lang_Class::as_Klass(type_mirror);
1182 if (!arg->is_a(k)) {
1183 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1184 "argument type mismatch");
1185 }
1186 }
1187 Handle arg_handle(THREAD, arg); // Create handle for argument
1188 java_args.push_oop(arg_handle); // Push handle
1189 }
1190 }
1191
1192 assert(java_args.size_of_parameters() == method->size_of_parameters(),
1193 "just checking");
1194
1195 // All oops (including receiver) is passed in as Handles. An potential oop is returned as an
1196 // oop (i.e., NOT as an handle)
1197 JavaValue result(rtype);
1198 JavaCalls::call(&result, method, &java_args, THREAD);
1199
1200 if (HAS_PENDING_EXCEPTION) {
1201 // Method threw an exception; wrap it in an InvocationTargetException
1202 oop target_exception = PENDING_EXCEPTION;
1203 CLEAR_PENDING_EXCEPTION;
1204 // JVMTI has already reported the pending exception
1205 // JVMTI internal flag reset is needed in order to report InvocationTargetException
1206 if (THREAD->is_Java_thread()) {
1207 JvmtiExport::clear_detected_exception((JavaThread*)THREAD);
1208 }
1209
1210 JavaCallArguments args(Handle(THREAD, target_exception));
1211 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(),
1212 vmSymbols::throwable_void_signature(),
1213 &args);
1214 } else {
1215 if (rtype == T_BOOLEAN || rtype == T_BYTE || rtype == T_CHAR || rtype == T_SHORT) {
1216 narrow((jvalue*)result.get_value_addr(), rtype, CHECK_NULL);
1217 }
1218 return Reflection::box((jvalue*)result.get_value_addr(), rtype, THREAD);
1219 }
1220 }
1221
1222 // This would be nicer if, say, java.lang.reflect.Method was a subclass
1223 // of java.lang.reflect.Constructor
1224
1225 oop Reflection::invoke_method(oop method_mirror, Handle receiver, objArrayHandle args, TRAPS) {
1226 oop mirror = java_lang_reflect_Method::clazz(method_mirror);
1227 int slot = java_lang_reflect_Method::slot(method_mirror);
1228 bool override = java_lang_reflect_Method::override(method_mirror) != 0;
1229 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Method::parameter_types(method_mirror)));
1230
1231 oop return_type_mirror = java_lang_reflect_Method::return_type(method_mirror);
1232 BasicType rtype;
1233 if (java_lang_Class::is_primitive(return_type_mirror)) {
1234 rtype = basic_type_mirror_to_basic_type(return_type_mirror, CHECK_NULL);
1235 } else {
1236 rtype = T_OBJECT;
1237 }
1238
1239 InstanceKlass* klass = InstanceKlass::cast(java_lang_Class::as_Klass(mirror));
1240 Method* m = klass->method_with_idnum(slot);
1241 if (m == NULL) {
1242 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke");
1243 }
1244 methodHandle method(THREAD, m);
1245
1246 return invoke(klass, method, receiver, override, ptypes, rtype, args, true, THREAD);
1247 }
1248
1249
1250 oop Reflection::invoke_constructor(oop constructor_mirror, objArrayHandle args, TRAPS) {
1251 oop mirror = java_lang_reflect_Constructor::clazz(constructor_mirror);
1252 int slot = java_lang_reflect_Constructor::slot(constructor_mirror);
1253 bool override = java_lang_reflect_Constructor::override(constructor_mirror) != 0;
1254 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Constructor::parameter_types(constructor_mirror)));
1255
1256 InstanceKlass* klass = InstanceKlass::cast(java_lang_Class::as_Klass(mirror));
1257 Method* m = klass->method_with_idnum(slot);
1258 if (m == NULL) {
1259 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke");
1260 }
1261 methodHandle method(THREAD, m);
1262 assert(method->name() == vmSymbols::object_initializer_name(), "invalid constructor");
1263
1264 // Make sure klass gets initialize
1265 klass->initialize(CHECK_NULL);
1266
1267 // Create new instance (the receiver)
1268 klass->check_valid_for_instantiation(false, CHECK_NULL);
1269 Handle receiver = klass->allocate_instance_handle(CHECK_NULL);
1270
1271 // Ignore result from call and return receiver
1272 invoke(klass, method, receiver, override, ptypes, T_VOID, args, false, CHECK_NULL);
1273 return receiver();
1274 }