Mercurial > hg > truffle
comparison src/share/vm/classfile/javaClasses.cpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | 90f5ddc7297b |
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1 /* | |
2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. | |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 # include "incls/_precompiled.incl" | |
26 # include "incls/_javaClasses.cpp.incl" | |
27 | |
28 // Helpful macro for computing field offsets at run time rather than hardcoding them | |
29 #define COMPUTE_OFFSET(klass_name_as_C_str, dest_offset, klass_oop, name_symbol, signature_symbol) \ | |
30 { \ | |
31 fieldDescriptor fd; \ | |
32 instanceKlass* ik = instanceKlass::cast(klass_oop); \ | |
33 if (!ik->find_local_field(name_symbol, signature_symbol, &fd)) { \ | |
34 fatal("Invalid layout of " klass_name_as_C_str); \ | |
35 } \ | |
36 dest_offset = fd.offset(); \ | |
37 } | |
38 | |
39 // Same as above but for "optional" offsets that might not be present in certain JDK versions | |
40 #define COMPUTE_OPTIONAL_OFFSET(klass_name_as_C_str, dest_offset, klass_oop, name_symbol, signature_symbol) \ | |
41 { \ | |
42 fieldDescriptor fd; \ | |
43 instanceKlass* ik = instanceKlass::cast(klass_oop); \ | |
44 if (ik->find_local_field(name_symbol, signature_symbol, &fd)) { \ | |
45 dest_offset = fd.offset(); \ | |
46 } \ | |
47 } | |
48 | |
49 Handle java_lang_String::basic_create(int length, bool tenured, TRAPS) { | |
50 // Create the String object first, so there's a chance that the String | |
51 // and the char array it points to end up in the same cache line. | |
52 oop obj; | |
53 if (tenured) { | |
54 obj = instanceKlass::cast(SystemDictionary::string_klass())->allocate_permanent_instance(CHECK_NH); | |
55 } else { | |
56 obj = instanceKlass::cast(SystemDictionary::string_klass())->allocate_instance(CHECK_NH); | |
57 } | |
58 | |
59 // Create the char array. The String object must be handlized here | |
60 // because GC can happen as a result of the allocation attempt. | |
61 Handle h_obj(THREAD, obj); | |
62 typeArrayOop buffer; | |
63 if (tenured) { | |
64 buffer = oopFactory::new_permanent_charArray(length, CHECK_NH); | |
65 } else { | |
66 buffer = oopFactory::new_charArray(length, CHECK_NH); | |
67 } | |
68 | |
69 // Point the String at the char array | |
70 obj = h_obj(); | |
71 set_value(obj, buffer); | |
72 // No need to zero the offset, allocation zero'ed the entire String object | |
73 assert(offset(obj) == 0, "initial String offset should be zero"); | |
74 //set_offset(obj, 0); | |
75 set_count(obj, length); | |
76 | |
77 return h_obj; | |
78 } | |
79 | |
80 Handle java_lang_String::basic_create_from_unicode(jchar* unicode, int length, bool tenured, TRAPS) { | |
81 Handle h_obj = basic_create(length, tenured, CHECK_NH); | |
82 typeArrayOop buffer = value(h_obj()); | |
83 for (int index = 0; index < length; index++) { | |
84 buffer->char_at_put(index, unicode[index]); | |
85 } | |
86 return h_obj; | |
87 } | |
88 | |
89 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) { | |
90 return basic_create_from_unicode(unicode, length, false, CHECK_NH); | |
91 } | |
92 | |
93 Handle java_lang_String::create_tenured_from_unicode(jchar* unicode, int length, TRAPS) { | |
94 return basic_create_from_unicode(unicode, length, true, CHECK_NH); | |
95 } | |
96 | |
97 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) { | |
98 Handle h_obj = basic_create_from_unicode(unicode, length, false, CHECK_0); | |
99 return h_obj(); | |
100 } | |
101 | |
102 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) { | |
103 if (utf8_str == NULL) { | |
104 return Handle(); | |
105 } | |
106 int length = UTF8::unicode_length(utf8_str); | |
107 Handle h_obj = basic_create(length, false, CHECK_NH); | |
108 if (length > 0) { | |
109 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length); | |
110 } | |
111 return h_obj; | |
112 } | |
113 | |
114 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) { | |
115 Handle h_obj = create_from_str(utf8_str, CHECK_0); | |
116 return h_obj(); | |
117 } | |
118 | |
119 Handle java_lang_String::create_from_symbol(symbolHandle symbol, TRAPS) { | |
120 int length = UTF8::unicode_length((char*)symbol->bytes(), symbol->utf8_length()); | |
121 Handle h_obj = basic_create(length, false, CHECK_NH); | |
122 if (length > 0) { | |
123 UTF8::convert_to_unicode((char*)symbol->bytes(), value(h_obj())->char_at_addr(0), length); | |
124 } | |
125 return h_obj; | |
126 } | |
127 | |
128 // Converts a C string to a Java String based on current encoding | |
129 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) { | |
130 assert(str != NULL, "bad arguments"); | |
131 | |
132 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *); | |
133 static to_java_string_fn_t _to_java_string_fn = NULL; | |
134 | |
135 if (_to_java_string_fn == NULL) { | |
136 void *lib_handle = os::native_java_library(); | |
137 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, hpi::dll_lookup(lib_handle, "NewStringPlatform")); | |
138 if (_to_java_string_fn == NULL) { | |
139 fatal("NewStringPlatform missing"); | |
140 } | |
141 } | |
142 | |
143 jstring js = NULL; | |
144 { JavaThread* thread = (JavaThread*)THREAD; | |
145 assert(thread->is_Java_thread(), "must be java thread"); | |
146 ThreadToNativeFromVM ttn(thread); | |
147 HandleMark hm(thread); | |
148 js = (_to_java_string_fn)(thread->jni_environment(), str); | |
149 } | |
150 return Handle(THREAD, JNIHandles::resolve(js)); | |
151 } | |
152 | |
153 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) { | |
154 oop obj = java_string(); | |
155 // Typical usage is to convert all '/' to '.' in string. | |
156 typeArrayOop value = java_lang_String::value(obj); | |
157 int offset = java_lang_String::offset(obj); | |
158 int length = java_lang_String::length(obj); | |
159 | |
160 // First check if any from_char exist | |
161 int index; // Declared outside, used later | |
162 for (index = 0; index < length; index++) { | |
163 if (value->char_at(index + offset) == from_char) { | |
164 break; | |
165 } | |
166 } | |
167 if (index == length) { | |
168 // No from_char, so do not copy. | |
169 return java_string; | |
170 } | |
171 | |
172 // Create new UNICODE buffer. Must handlize value because GC | |
173 // may happen during String and char array creation. | |
174 typeArrayHandle h_value(THREAD, value); | |
175 Handle string = basic_create(length, false, CHECK_NH); | |
176 | |
177 typeArrayOop from_buffer = h_value(); | |
178 typeArrayOop to_buffer = java_lang_String::value(string()); | |
179 | |
180 // Copy contents | |
181 for (index = 0; index < length; index++) { | |
182 jchar c = from_buffer->char_at(index + offset); | |
183 if (c == from_char) { | |
184 c = to_char; | |
185 } | |
186 to_buffer->char_at_put(index, c); | |
187 } | |
188 return string; | |
189 } | |
190 | |
191 jchar* java_lang_String::as_unicode_string(oop java_string, int& length) { | |
192 typeArrayOop value = java_lang_String::value(java_string); | |
193 int offset = java_lang_String::offset(java_string); | |
194 length = java_lang_String::length(java_string); | |
195 | |
196 jchar* result = NEW_RESOURCE_ARRAY(jchar, length); | |
197 for (int index = 0; index < length; index++) { | |
198 result[index] = value->char_at(index + offset); | |
199 } | |
200 return result; | |
201 } | |
202 | |
203 symbolHandle java_lang_String::as_symbol(Handle java_string, TRAPS) { | |
204 oop obj = java_string(); | |
205 typeArrayOop value = java_lang_String::value(obj); | |
206 int offset = java_lang_String::offset(obj); | |
207 int length = java_lang_String::length(obj); | |
208 | |
209 ResourceMark rm(THREAD); | |
210 symbolHandle result; | |
211 | |
212 if (length > 0) { | |
213 int utf8_length = UNICODE::utf8_length(value->char_at_addr(offset), length); | |
214 char* chars = NEW_RESOURCE_ARRAY(char, utf8_length + 1); | |
215 UNICODE::convert_to_utf8(value->char_at_addr(offset), length, chars); | |
216 // Allocate the symbol | |
217 result = oopFactory::new_symbol_handle(chars, utf8_length, CHECK_(symbolHandle())); | |
218 } else { | |
219 result = oopFactory::new_symbol_handle("", 0, CHECK_(symbolHandle())); | |
220 } | |
221 return result; | |
222 } | |
223 | |
224 int java_lang_String::utf8_length(oop java_string) { | |
225 typeArrayOop value = java_lang_String::value(java_string); | |
226 int offset = java_lang_String::offset(java_string); | |
227 int length = java_lang_String::length(java_string); | |
228 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset); | |
229 return UNICODE::utf8_length(position, length); | |
230 } | |
231 | |
232 char* java_lang_String::as_utf8_string(oop java_string) { | |
233 typeArrayOop value = java_lang_String::value(java_string); | |
234 int offset = java_lang_String::offset(java_string); | |
235 int length = java_lang_String::length(java_string); | |
236 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset); | |
237 return UNICODE::as_utf8(position, length); | |
238 } | |
239 | |
240 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) { | |
241 typeArrayOop value = java_lang_String::value(java_string); | |
242 int offset = java_lang_String::offset(java_string); | |
243 int length = java_lang_String::length(java_string); | |
244 assert(start + len <= length, "just checking"); | |
245 jchar* position = value->char_at_addr(offset + start); | |
246 return UNICODE::as_utf8(position, len); | |
247 } | |
248 | |
249 bool java_lang_String::equals(oop java_string, jchar* chars, int len) { | |
250 assert(SharedSkipVerify || | |
251 java_string->klass() == SystemDictionary::string_klass(), | |
252 "must be java_string"); | |
253 typeArrayOop value = java_lang_String::value(java_string); | |
254 int offset = java_lang_String::offset(java_string); | |
255 int length = java_lang_String::length(java_string); | |
256 if (length != len) { | |
257 return false; | |
258 } | |
259 for (int i = 0; i < len; i++) { | |
260 if (value->char_at(i + offset) != chars[i]) { | |
261 return false; | |
262 } | |
263 } | |
264 return true; | |
265 } | |
266 | |
267 void java_lang_String::print(Handle java_string, outputStream* st) { | |
268 oop obj = java_string(); | |
269 assert(obj->klass() == SystemDictionary::string_klass(), "must be java_string"); | |
270 typeArrayOop value = java_lang_String::value(obj); | |
271 int offset = java_lang_String::offset(obj); | |
272 int length = java_lang_String::length(obj); | |
273 | |
274 int end = MIN2(length, 100); | |
275 if (value == NULL) { | |
276 // This can happen if, e.g., printing a String | |
277 // object before its initializer has been called | |
278 st->print_cr("NULL"); | |
279 } else { | |
280 st->print("\""); | |
281 for (int index = 0; index < length; index++) { | |
282 st->print("%c", value->char_at(index + offset)); | |
283 } | |
284 st->print("\""); | |
285 } | |
286 } | |
287 | |
288 | |
289 oop java_lang_Class::create_mirror(KlassHandle k, TRAPS) { | |
290 assert(k->java_mirror() == NULL, "should only assign mirror once"); | |
291 // Use this moment of initialization to cache modifier_flags also, | |
292 // to support Class.getModifiers(). Instance classes recalculate | |
293 // the cached flags after the class file is parsed, but before the | |
294 // class is put into the system dictionary. | |
295 int computed_modifiers = k->compute_modifier_flags(CHECK_0); | |
296 k->set_modifier_flags(computed_modifiers); | |
297 if (SystemDictionary::class_klass_loaded()) { | |
298 // Allocate mirror (java.lang.Class instance) | |
299 Handle mirror = instanceKlass::cast(SystemDictionary::class_klass())->allocate_permanent_instance(CHECK_0); | |
300 // Setup indirections | |
301 mirror->obj_field_put(klass_offset, k()); | |
302 k->set_java_mirror(mirror()); | |
303 // It might also have a component mirror. This mirror must already exist. | |
304 if (k->oop_is_javaArray()) { | |
305 Handle comp_mirror; | |
306 if (k->oop_is_typeArray()) { | |
307 BasicType type = typeArrayKlass::cast(k->as_klassOop())->element_type(); | |
308 comp_mirror = Universe::java_mirror(type); | |
309 assert(comp_mirror.not_null(), "must have primitive mirror"); | |
310 } else if (k->oop_is_objArray()) { | |
311 klassOop element_klass = objArrayKlass::cast(k->as_klassOop())->element_klass(); | |
312 if (element_klass != NULL | |
313 && (Klass::cast(element_klass)->oop_is_instance() || | |
314 Klass::cast(element_klass)->oop_is_javaArray())) { | |
315 comp_mirror = Klass::cast(element_klass)->java_mirror(); | |
316 assert(comp_mirror.not_null(), "must have element mirror"); | |
317 } | |
318 // else some object array internal to the VM, like systemObjArrayKlassObj | |
319 } | |
320 if (comp_mirror.not_null()) { | |
321 // Two-way link between the array klass and its component mirror: | |
322 arrayKlass::cast(k->as_klassOop())->set_component_mirror(comp_mirror()); | |
323 set_array_klass(comp_mirror(), k->as_klassOop()); | |
324 } | |
325 } | |
326 return mirror(); | |
327 } else { | |
328 return NULL; | |
329 } | |
330 } | |
331 | |
332 | |
333 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) { | |
334 // This should be improved by adding a field at the Java level or by | |
335 // introducing a new VM klass (see comment in ClassFileParser) | |
336 oop java_class = instanceKlass::cast(SystemDictionary::class_klass())->allocate_permanent_instance(CHECK_0); | |
337 if (type != T_VOID) { | |
338 klassOop aklass = Universe::typeArrayKlassObj(type); | |
339 assert(aklass != NULL, "correct bootstrap"); | |
340 set_array_klass(java_class, aklass); | |
341 } | |
342 return java_class; | |
343 } | |
344 | |
345 | |
346 klassOop java_lang_Class::as_klassOop(oop java_class) { | |
347 //%note memory_2 | |
348 klassOop k = klassOop(java_class->obj_field(klass_offset)); | |
349 assert(k == NULL || k->is_klass(), "type check"); | |
350 return k; | |
351 } | |
352 | |
353 | |
354 klassOop java_lang_Class::array_klass(oop java_class) { | |
355 klassOop k = klassOop(java_class->obj_field(array_klass_offset)); | |
356 assert(k == NULL || k->is_klass() && Klass::cast(k)->oop_is_javaArray(), "should be array klass"); | |
357 return k; | |
358 } | |
359 | |
360 | |
361 void java_lang_Class::set_array_klass(oop java_class, klassOop klass) { | |
362 assert(klass->is_klass() && Klass::cast(klass)->oop_is_javaArray(), "should be array klass"); | |
363 java_class->obj_field_put(array_klass_offset, klass); | |
364 } | |
365 | |
366 | |
367 methodOop java_lang_Class::resolved_constructor(oop java_class) { | |
368 oop constructor = java_class->obj_field(resolved_constructor_offset); | |
369 assert(constructor == NULL || constructor->is_method(), "should be method"); | |
370 return methodOop(constructor); | |
371 } | |
372 | |
373 | |
374 void java_lang_Class::set_resolved_constructor(oop java_class, methodOop constructor) { | |
375 assert(constructor->is_method(), "should be method"); | |
376 java_class->obj_field_put(resolved_constructor_offset, constructor); | |
377 } | |
378 | |
379 | |
380 bool java_lang_Class::is_primitive(oop java_class) { | |
381 klassOop k = klassOop(java_class->obj_field(klass_offset)); | |
382 return k == NULL; | |
383 } | |
384 | |
385 | |
386 BasicType java_lang_Class::primitive_type(oop java_class) { | |
387 assert(java_lang_Class::is_primitive(java_class), "just checking"); | |
388 klassOop ak = klassOop(java_class->obj_field(array_klass_offset)); | |
389 BasicType type = T_VOID; | |
390 if (ak != NULL) { | |
391 // Note: create_basic_type_mirror above initializes ak to a non-null value. | |
392 type = arrayKlass::cast(ak)->element_type(); | |
393 } else { | |
394 assert(java_class == Universe::void_mirror(), "only valid non-array primitive"); | |
395 } | |
396 assert(Universe::java_mirror(type) == java_class, "must be consistent"); | |
397 return type; | |
398 } | |
399 | |
400 | |
401 oop java_lang_Class::primitive_mirror(BasicType t) { | |
402 oop mirror = Universe::java_mirror(t); | |
403 assert(mirror != NULL && mirror->is_a(SystemDictionary::class_klass()), "must be a Class"); | |
404 assert(java_lang_Class::is_primitive(mirror), "must be primitive"); | |
405 return mirror; | |
406 } | |
407 | |
408 bool java_lang_Class::offsets_computed = false; | |
409 int java_lang_Class::classRedefinedCount_offset = -1; | |
410 | |
411 void java_lang_Class::compute_offsets() { | |
412 assert(!offsets_computed, "offsets should be initialized only once"); | |
413 offsets_computed = true; | |
414 | |
415 klassOop k = SystemDictionary::class_klass(); | |
416 // The classRedefinedCount field is only present starting in 1.5, | |
417 // so don't go fatal. | |
418 COMPUTE_OPTIONAL_OFFSET("java.lang.Class", classRedefinedCount_offset, | |
419 k, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature()); | |
420 } | |
421 | |
422 int java_lang_Class::classRedefinedCount(oop the_class_mirror) { | |
423 if (!JDK_Version::is_gte_jdk15x_version() | |
424 || classRedefinedCount_offset == -1) { | |
425 // The classRedefinedCount field is only present starting in 1.5. | |
426 // If we don't have an offset for it then just return -1 as a marker. | |
427 return -1; | |
428 } | |
429 | |
430 return the_class_mirror->int_field(classRedefinedCount_offset); | |
431 } | |
432 | |
433 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) { | |
434 if (!JDK_Version::is_gte_jdk15x_version() | |
435 || classRedefinedCount_offset == -1) { | |
436 // The classRedefinedCount field is only present starting in 1.5. | |
437 // If we don't have an offset for it then nothing to set. | |
438 return; | |
439 } | |
440 | |
441 the_class_mirror->int_field_put(classRedefinedCount_offset, value); | |
442 } | |
443 | |
444 | |
445 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the | |
446 // platform thread structure, and a eetop offset which was used for thread | |
447 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures | |
448 // merged, so in the HotSpot VM we just use the eetop field for the thread | |
449 // instead of the privateInfo_offset. | |
450 // | |
451 // Note: The stackSize field is only present starting in 1.4. | |
452 | |
453 int java_lang_Thread::_name_offset = 0; | |
454 int java_lang_Thread::_group_offset = 0; | |
455 int java_lang_Thread::_contextClassLoader_offset = 0; | |
456 int java_lang_Thread::_inheritedAccessControlContext_offset = 0; | |
457 int java_lang_Thread::_priority_offset = 0; | |
458 int java_lang_Thread::_eetop_offset = 0; | |
459 int java_lang_Thread::_daemon_offset = 0; | |
460 int java_lang_Thread::_stillborn_offset = 0; | |
461 int java_lang_Thread::_stackSize_offset = 0; | |
462 int java_lang_Thread::_tid_offset = 0; | |
463 int java_lang_Thread::_thread_status_offset = 0; | |
464 int java_lang_Thread::_park_blocker_offset = 0; | |
465 int java_lang_Thread::_park_event_offset = 0 ; | |
466 | |
467 | |
468 void java_lang_Thread::compute_offsets() { | |
469 assert(_group_offset == 0, "offsets should be initialized only once"); | |
470 | |
471 klassOop k = SystemDictionary::thread_klass(); | |
472 COMPUTE_OFFSET("java.lang.Thread", _name_offset, k, vmSymbols::name_name(), vmSymbols::char_array_signature()); | |
473 COMPUTE_OFFSET("java.lang.Thread", _group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature()); | |
474 COMPUTE_OFFSET("java.lang.Thread", _contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature()); | |
475 COMPUTE_OFFSET("java.lang.Thread", _inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature()); | |
476 COMPUTE_OFFSET("java.lang.Thread", _priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature()); | |
477 COMPUTE_OFFSET("java.lang.Thread", _daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature()); | |
478 COMPUTE_OFFSET("java.lang.Thread", _eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature()); | |
479 COMPUTE_OFFSET("java.lang.Thread", _stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature()); | |
480 // The stackSize field is only present starting in 1.4, so don't go fatal. | |
481 COMPUTE_OPTIONAL_OFFSET("java.lang.Thread", _stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature()); | |
482 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal. | |
483 COMPUTE_OPTIONAL_OFFSET("java.lang.Thread", _tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature()); | |
484 COMPUTE_OPTIONAL_OFFSET("java.lang.Thread", _thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature()); | |
485 // The parkBlocker field is only present starting in 1.6, so don't go fatal. | |
486 COMPUTE_OPTIONAL_OFFSET("java.lang.Thread", _park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature()); | |
487 COMPUTE_OPTIONAL_OFFSET("java.lang.Thread", _park_event_offset, k, vmSymbols::park_event_name(), | |
488 vmSymbols::long_signature()); | |
489 } | |
490 | |
491 | |
492 JavaThread* java_lang_Thread::thread(oop java_thread) { | |
493 return (JavaThread*) java_thread->obj_field(_eetop_offset); | |
494 } | |
495 | |
496 | |
497 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) { | |
498 // We are storing a JavaThread* (malloc'ed data) into a long field in the thread | |
499 // object. The store has to be 64-bit wide so we use a pointer store, but we | |
500 // cannot call oopDesc::obj_field_put since it includes a write barrier! | |
501 oop* addr = java_thread->obj_field_addr(_eetop_offset); | |
502 *addr = (oop) thread; | |
503 } | |
504 | |
505 | |
506 typeArrayOop java_lang_Thread::name(oop java_thread) { | |
507 oop name = java_thread->obj_field(_name_offset); | |
508 assert(name == NULL || (name->is_typeArray() && typeArrayKlass::cast(name->klass())->element_type() == T_CHAR), "just checking"); | |
509 return typeArrayOop(name); | |
510 } | |
511 | |
512 | |
513 void java_lang_Thread::set_name(oop java_thread, typeArrayOop name) { | |
514 assert(java_thread->obj_field(_name_offset) == NULL, "name should be NULL"); | |
515 java_thread->obj_field_put(_name_offset, name); | |
516 } | |
517 | |
518 | |
519 ThreadPriority java_lang_Thread::priority(oop java_thread) { | |
520 return (ThreadPriority)java_thread->int_field(_priority_offset); | |
521 } | |
522 | |
523 | |
524 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) { | |
525 java_thread->int_field_put(_priority_offset, priority); | |
526 } | |
527 | |
528 | |
529 oop java_lang_Thread::threadGroup(oop java_thread) { | |
530 return java_thread->obj_field(_group_offset); | |
531 } | |
532 | |
533 | |
534 bool java_lang_Thread::is_stillborn(oop java_thread) { | |
535 return java_thread->bool_field(_stillborn_offset) != 0; | |
536 } | |
537 | |
538 | |
539 // We never have reason to turn the stillborn bit off | |
540 void java_lang_Thread::set_stillborn(oop java_thread) { | |
541 java_thread->bool_field_put(_stillborn_offset, true); | |
542 } | |
543 | |
544 | |
545 bool java_lang_Thread::is_alive(oop java_thread) { | |
546 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
547 return (thr != NULL); | |
548 } | |
549 | |
550 | |
551 bool java_lang_Thread::is_daemon(oop java_thread) { | |
552 return java_thread->bool_field(_daemon_offset) != 0; | |
553 } | |
554 | |
555 | |
556 void java_lang_Thread::set_daemon(oop java_thread) { | |
557 java_thread->bool_field_put(_daemon_offset, true); | |
558 } | |
559 | |
560 oop java_lang_Thread::context_class_loader(oop java_thread) { | |
561 return java_thread->obj_field(_contextClassLoader_offset); | |
562 } | |
563 | |
564 oop java_lang_Thread::inherited_access_control_context(oop java_thread) { | |
565 return java_thread->obj_field(_inheritedAccessControlContext_offset); | |
566 } | |
567 | |
568 | |
569 jlong java_lang_Thread::stackSize(oop java_thread) { | |
570 // The stackSize field is only present starting in 1.4 | |
571 if (_stackSize_offset > 0) { | |
572 assert(JDK_Version::is_gte_jdk14x_version(), "sanity check"); | |
573 return java_thread->long_field(_stackSize_offset); | |
574 } else { | |
575 return 0; | |
576 } | |
577 } | |
578 | |
579 // Write the thread status value to threadStatus field in java.lang.Thread java class. | |
580 void java_lang_Thread::set_thread_status(oop java_thread, | |
581 java_lang_Thread::ThreadStatus status) { | |
582 assert(JavaThread::current()->thread_state() == _thread_in_vm, "Java Thread is not running in vm"); | |
583 // The threadStatus is only present starting in 1.5 | |
584 if (_thread_status_offset > 0) { | |
585 java_thread->int_field_put(_thread_status_offset, status); | |
586 } | |
587 } | |
588 | |
589 // Read thread status value from threadStatus field in java.lang.Thread java class. | |
590 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) { | |
591 assert(Thread::current()->is_VM_thread() || | |
592 JavaThread::current()->thread_state() == _thread_in_vm, | |
593 "Java Thread is not running in vm"); | |
594 // The threadStatus is only present starting in 1.5 | |
595 if (_thread_status_offset > 0) { | |
596 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset); | |
597 } else { | |
598 // All we can easily figure out is if it is alive, but that is | |
599 // enough info for a valid unknown status. | |
600 // These aren't restricted to valid set ThreadStatus values, so | |
601 // use JVMTI values and cast. | |
602 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
603 if (thr == NULL) { | |
604 // the thread hasn't run yet or is in the process of exiting | |
605 return NEW; | |
606 } | |
607 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE; | |
608 } | |
609 } | |
610 | |
611 | |
612 jlong java_lang_Thread::thread_id(oop java_thread) { | |
613 // The thread ID field is only present starting in 1.5 | |
614 if (_tid_offset > 0) { | |
615 return java_thread->long_field(_tid_offset); | |
616 } else { | |
617 return 0; | |
618 } | |
619 } | |
620 | |
621 oop java_lang_Thread::park_blocker(oop java_thread) { | |
622 assert(JDK_Version::supports_thread_park_blocker() && _park_blocker_offset != 0, | |
623 "Must support parkBlocker field"); | |
624 | |
625 if (_park_blocker_offset > 0) { | |
626 return java_thread->obj_field(_park_blocker_offset); | |
627 } | |
628 | |
629 return NULL; | |
630 } | |
631 | |
632 jlong java_lang_Thread::park_event(oop java_thread) { | |
633 if (_park_event_offset > 0) { | |
634 return java_thread->long_field(_park_event_offset); | |
635 } | |
636 return 0; | |
637 } | |
638 | |
639 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) { | |
640 if (_park_event_offset > 0) { | |
641 java_thread->long_field_put(_park_event_offset, ptr); | |
642 return true; | |
643 } | |
644 return false; | |
645 } | |
646 | |
647 | |
648 const char* java_lang_Thread::thread_status_name(oop java_thread) { | |
649 assert(JDK_Version::is_gte_jdk15x_version() && _thread_status_offset != 0, "Must have thread status"); | |
650 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset); | |
651 switch (status) { | |
652 case NEW : return "NEW"; | |
653 case RUNNABLE : return "RUNNABLE"; | |
654 case SLEEPING : return "TIMED_WAITING (sleeping)"; | |
655 case IN_OBJECT_WAIT : return "WAITING (on object monitor)"; | |
656 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)"; | |
657 case PARKED : return "WAITING (parking)"; | |
658 case PARKED_TIMED : return "TIMED_WAITING (parking)"; | |
659 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)"; | |
660 case TERMINATED : return "TERMINATED"; | |
661 default : return "UNKNOWN"; | |
662 }; | |
663 } | |
664 int java_lang_ThreadGroup::_parent_offset = 0; | |
665 int java_lang_ThreadGroup::_name_offset = 0; | |
666 int java_lang_ThreadGroup::_threads_offset = 0; | |
667 int java_lang_ThreadGroup::_groups_offset = 0; | |
668 int java_lang_ThreadGroup::_maxPriority_offset = 0; | |
669 int java_lang_ThreadGroup::_destroyed_offset = 0; | |
670 int java_lang_ThreadGroup::_daemon_offset = 0; | |
671 int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0; | |
672 int java_lang_ThreadGroup::_nthreads_offset = 0; | |
673 int java_lang_ThreadGroup::_ngroups_offset = 0; | |
674 | |
675 oop java_lang_ThreadGroup::parent(oop java_thread_group) { | |
676 assert(java_thread_group->is_oop(), "thread group must be oop"); | |
677 return java_thread_group->obj_field(_parent_offset); | |
678 } | |
679 | |
680 // ("name as oop" accessor is not necessary) | |
681 | |
682 typeArrayOop java_lang_ThreadGroup::name(oop java_thread_group) { | |
683 oop name = java_thread_group->obj_field(_name_offset); | |
684 // ThreadGroup.name can be null | |
685 return name == NULL ? (typeArrayOop)NULL : java_lang_String::value(name); | |
686 } | |
687 | |
688 int java_lang_ThreadGroup::nthreads(oop java_thread_group) { | |
689 assert(java_thread_group->is_oop(), "thread group must be oop"); | |
690 return java_thread_group->int_field(_nthreads_offset); | |
691 } | |
692 | |
693 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) { | |
694 oop threads = java_thread_group->obj_field(_threads_offset); | |
695 assert(threads != NULL, "threadgroups should have threads"); | |
696 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code | |
697 return objArrayOop(threads); | |
698 } | |
699 | |
700 int java_lang_ThreadGroup::ngroups(oop java_thread_group) { | |
701 assert(java_thread_group->is_oop(), "thread group must be oop"); | |
702 return java_thread_group->int_field(_ngroups_offset); | |
703 } | |
704 | |
705 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) { | |
706 oop groups = java_thread_group->obj_field(_groups_offset); | |
707 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code | |
708 return objArrayOop(groups); | |
709 } | |
710 | |
711 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) { | |
712 assert(java_thread_group->is_oop(), "thread group must be oop"); | |
713 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset); | |
714 } | |
715 | |
716 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) { | |
717 assert(java_thread_group->is_oop(), "thread group must be oop"); | |
718 return java_thread_group->bool_field(_destroyed_offset) != 0; | |
719 } | |
720 | |
721 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) { | |
722 assert(java_thread_group->is_oop(), "thread group must be oop"); | |
723 return java_thread_group->bool_field(_daemon_offset) != 0; | |
724 } | |
725 | |
726 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) { | |
727 assert(java_thread_group->is_oop(), "thread group must be oop"); | |
728 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0; | |
729 } | |
730 | |
731 void java_lang_ThreadGroup::compute_offsets() { | |
732 assert(_parent_offset == 0, "offsets should be initialized only once"); | |
733 | |
734 klassOop k = SystemDictionary::threadGroup_klass(); | |
735 | |
736 COMPUTE_OFFSET("java.lang.ThreadGroup", _parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature()); | |
737 COMPUTE_OFFSET("java.lang.ThreadGroup", _name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); | |
738 COMPUTE_OFFSET("java.lang.ThreadGroup", _threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature()); | |
739 COMPUTE_OFFSET("java.lang.ThreadGroup", _groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature()); | |
740 COMPUTE_OFFSET("java.lang.ThreadGroup", _maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature()); | |
741 COMPUTE_OFFSET("java.lang.ThreadGroup", _destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature()); | |
742 COMPUTE_OFFSET("java.lang.ThreadGroup", _daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature()); | |
743 COMPUTE_OFFSET("java.lang.ThreadGroup", _vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature()); | |
744 COMPUTE_OFFSET("java.lang.ThreadGroup", _nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature()); | |
745 COMPUTE_OFFSET("java.lang.ThreadGroup", _ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature()); | |
746 } | |
747 | |
748 oop java_lang_Throwable::backtrace(oop throwable) { | |
749 return throwable->obj_field_acquire(backtrace_offset); | |
750 } | |
751 | |
752 | |
753 void java_lang_Throwable::set_backtrace(oop throwable, oop value) { | |
754 throwable->release_obj_field_put(backtrace_offset, value); | |
755 } | |
756 | |
757 | |
758 oop java_lang_Throwable::message(oop throwable) { | |
759 return throwable->obj_field(detailMessage_offset); | |
760 } | |
761 | |
762 | |
763 oop java_lang_Throwable::message(Handle throwable) { | |
764 return throwable->obj_field(detailMessage_offset); | |
765 } | |
766 | |
767 | |
768 void java_lang_Throwable::set_message(oop throwable, oop value) { | |
769 throwable->obj_field_put(detailMessage_offset, value); | |
770 } | |
771 | |
772 | |
773 void java_lang_Throwable::clear_stacktrace(oop throwable) { | |
774 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4"); | |
775 throwable->obj_field_put(stackTrace_offset, NULL); | |
776 } | |
777 | |
778 | |
779 void java_lang_Throwable::print(oop throwable, outputStream* st) { | |
780 ResourceMark rm; | |
781 klassOop k = throwable->klass(); | |
782 assert(k != NULL, "just checking"); | |
783 st->print("%s", instanceKlass::cast(k)->external_name()); | |
784 oop msg = message(throwable); | |
785 if (msg != NULL) { | |
786 st->print(": %s", java_lang_String::as_utf8_string(msg)); | |
787 } | |
788 } | |
789 | |
790 | |
791 void java_lang_Throwable::print(Handle throwable, outputStream* st) { | |
792 ResourceMark rm; | |
793 klassOop k = throwable->klass(); | |
794 assert(k != NULL, "just checking"); | |
795 st->print("%s", instanceKlass::cast(k)->external_name()); | |
796 oop msg = message(throwable); | |
797 if (msg != NULL) { | |
798 st->print(": %s", java_lang_String::as_utf8_string(msg)); | |
799 } | |
800 } | |
801 | |
802 // Print stack trace element to resource allocated buffer | |
803 char* java_lang_Throwable::print_stack_element_to_buffer(methodOop method, int bci) { | |
804 // Get strings and string lengths | |
805 instanceKlass* klass = instanceKlass::cast(method->method_holder()); | |
806 const char* klass_name = klass->external_name(); | |
807 int buf_len = (int)strlen(klass_name); | |
808 char* source_file_name; | |
809 if (klass->source_file_name() == NULL) { | |
810 source_file_name = NULL; | |
811 } else { | |
812 source_file_name = klass->source_file_name()->as_C_string(); | |
813 buf_len += (int)strlen(source_file_name); | |
814 } | |
815 char* method_name = method->name()->as_C_string(); | |
816 buf_len += (int)strlen(method_name); | |
817 | |
818 // Allocate temporary buffer with extra space for formatting and line number | |
819 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64); | |
820 | |
821 // Print stack trace line in buffer | |
822 sprintf(buf, "\tat %s.%s", klass_name, method_name); | |
823 if (method->is_native()) { | |
824 strcat(buf, "(Native Method)"); | |
825 } else { | |
826 int line_number = method->line_number_from_bci(bci); | |
827 if (source_file_name != NULL && (line_number != -1)) { | |
828 // Sourcename and linenumber | |
829 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number); | |
830 } else if (source_file_name != NULL) { | |
831 // Just sourcename | |
832 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name); | |
833 } else { | |
834 // Neither soucename and linenumber | |
835 sprintf(buf + (int)strlen(buf), "(Unknown Source)"); | |
836 } | |
837 nmethod* nm = method->code(); | |
838 if (WizardMode && nm != NULL) { | |
839 sprintf(buf + (int)strlen(buf), "(nmethod %#x)", nm); | |
840 } | |
841 } | |
842 | |
843 return buf; | |
844 } | |
845 | |
846 | |
847 void java_lang_Throwable::print_stack_element(Handle stream, methodOop method, int bci) { | |
848 ResourceMark rm; | |
849 char* buf = print_stack_element_to_buffer(method, bci); | |
850 print_to_stream(stream, buf); | |
851 } | |
852 | |
853 void java_lang_Throwable::print_stack_element(outputStream *st, methodOop method, int bci) { | |
854 ResourceMark rm; | |
855 char* buf = print_stack_element_to_buffer(method, bci); | |
856 st->print_cr("%s", buf); | |
857 } | |
858 | |
859 void java_lang_Throwable::print_to_stream(Handle stream, const char* str) { | |
860 if (stream.is_null()) { | |
861 tty->print_cr("%s", str); | |
862 } else { | |
863 EXCEPTION_MARK; | |
864 JavaValue result(T_VOID); | |
865 Handle arg (THREAD, oopFactory::new_charArray(str, THREAD)); | |
866 if (!HAS_PENDING_EXCEPTION) { | |
867 JavaCalls::call_virtual(&result, | |
868 stream, | |
869 KlassHandle(THREAD, stream->klass()), | |
870 vmSymbolHandles::println_name(), | |
871 vmSymbolHandles::char_array_void_signature(), | |
872 arg, | |
873 THREAD); | |
874 } | |
875 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM. | |
876 if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION; | |
877 } | |
878 | |
879 } | |
880 | |
881 | |
882 const char* java_lang_Throwable::no_stack_trace_message() { | |
883 return "\t<<no stack trace available>>"; | |
884 } | |
885 | |
886 | |
887 // Currently used only for exceptions occurring during startup | |
888 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) { | |
889 Thread *THREAD = Thread::current(); | |
890 Handle h_throwable(THREAD, throwable); | |
891 while (h_throwable.not_null()) { | |
892 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable()))); | |
893 if (result.is_null()) { | |
894 st->print_cr(no_stack_trace_message()); | |
895 return; | |
896 } | |
897 | |
898 while (result.not_null()) { | |
899 objArrayHandle methods (THREAD, | |
900 objArrayOop(result->obj_at(trace_methods_offset))); | |
901 typeArrayHandle bcis (THREAD, | |
902 typeArrayOop(result->obj_at(trace_bcis_offset))); | |
903 | |
904 if (methods.is_null() || bcis.is_null()) { | |
905 st->print_cr(no_stack_trace_message()); | |
906 return; | |
907 } | |
908 | |
909 int length = methods()->length(); | |
910 for (int index = 0; index < length; index++) { | |
911 methodOop method = methodOop(methods()->obj_at(index)); | |
912 if (method == NULL) goto handle_cause; | |
913 int bci = bcis->ushort_at(index); | |
914 print_stack_element(st, method, bci); | |
915 } | |
916 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset))); | |
917 } | |
918 handle_cause: | |
919 { | |
920 EXCEPTION_MARK; | |
921 JavaValue result(T_OBJECT); | |
922 JavaCalls::call_virtual(&result, | |
923 h_throwable, | |
924 KlassHandle(THREAD, h_throwable->klass()), | |
925 vmSymbolHandles::getCause_name(), | |
926 vmSymbolHandles::void_throwable_signature(), | |
927 THREAD); | |
928 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM. | |
929 if (HAS_PENDING_EXCEPTION) { | |
930 CLEAR_PENDING_EXCEPTION; | |
931 h_throwable = Handle(); | |
932 } else { | |
933 h_throwable = Handle(THREAD, (oop) result.get_jobject()); | |
934 if (h_throwable.not_null()) { | |
935 st->print("Caused by: "); | |
936 print(h_throwable, st); | |
937 st->cr(); | |
938 } | |
939 } | |
940 } | |
941 } | |
942 } | |
943 | |
944 | |
945 void java_lang_Throwable::print_stack_trace(oop throwable, oop print_stream) { | |
946 // Note: this is no longer used in Merlin, but we support it for compatibility. | |
947 Thread *thread = Thread::current(); | |
948 Handle stream(thread, print_stream); | |
949 objArrayHandle result (thread, objArrayOop(backtrace(throwable))); | |
950 if (result.is_null()) { | |
951 print_to_stream(stream, no_stack_trace_message()); | |
952 return; | |
953 } | |
954 | |
955 while (result.not_null()) { | |
956 objArrayHandle methods (thread, | |
957 objArrayOop(result->obj_at(trace_methods_offset))); | |
958 typeArrayHandle bcis (thread, | |
959 typeArrayOop(result->obj_at(trace_bcis_offset))); | |
960 | |
961 if (methods.is_null() || bcis.is_null()) { | |
962 print_to_stream(stream, no_stack_trace_message()); | |
963 return; | |
964 } | |
965 | |
966 int length = methods()->length(); | |
967 for (int index = 0; index < length; index++) { | |
968 methodOop method = methodOop(methods()->obj_at(index)); | |
969 if (method == NULL) return; | |
970 int bci = bcis->ushort_at(index); | |
971 print_stack_element(stream, method, bci); | |
972 } | |
973 result = objArrayHandle(thread, objArrayOop(result->obj_at(trace_next_offset))); | |
974 } | |
975 } | |
976 | |
977 // This class provides a simple wrapper over the internal structure of | |
978 // exception backtrace to insulate users of the backtrace from needing | |
979 // to know what it looks like. | |
980 class BacktraceBuilder: public StackObj { | |
981 private: | |
982 Handle _backtrace; | |
983 objArrayOop _head; | |
984 objArrayOop _methods; | |
985 typeArrayOop _bcis; | |
986 int _index; | |
987 bool _dirty; | |
988 bool _done; | |
989 No_Safepoint_Verifier _nsv; | |
990 | |
991 public: | |
992 | |
993 enum { | |
994 trace_methods_offset = java_lang_Throwable::trace_methods_offset, | |
995 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset, | |
996 trace_next_offset = java_lang_Throwable::trace_next_offset, | |
997 trace_size = java_lang_Throwable::trace_size, | |
998 trace_chunk_size = java_lang_Throwable::trace_chunk_size | |
999 }; | |
1000 | |
1001 // constructor for new backtrace | |
1002 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL) { | |
1003 expand(CHECK); | |
1004 _backtrace = _head; | |
1005 _index = 0; | |
1006 _dirty = false; | |
1007 _done = false; | |
1008 } | |
1009 | |
1010 void flush() { | |
1011 if (_dirty && _methods != NULL) { | |
1012 BarrierSet* bs = Universe::heap()->barrier_set(); | |
1013 assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt"); | |
1014 bs->write_ref_array(MemRegion((HeapWord*)_methods->obj_at_addr(0), | |
1015 _methods->length() * HeapWordsPerOop)); | |
1016 _dirty = false; | |
1017 } | |
1018 } | |
1019 | |
1020 void expand(TRAPS) { | |
1021 flush(); | |
1022 | |
1023 objArrayHandle old_head(THREAD, _head); | |
1024 Pause_No_Safepoint_Verifier pnsv(&_nsv); | |
1025 | |
1026 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK); | |
1027 objArrayHandle new_head(THREAD, head); | |
1028 | |
1029 objArrayOop methods = oopFactory::new_objectArray(trace_chunk_size, CHECK); | |
1030 objArrayHandle new_methods(THREAD, methods); | |
1031 | |
1032 typeArrayOop bcis = oopFactory::new_shortArray(trace_chunk_size, CHECK); | |
1033 typeArrayHandle new_bcis(THREAD, bcis); | |
1034 | |
1035 if (!old_head.is_null()) { | |
1036 old_head->obj_at_put(trace_next_offset, new_head()); | |
1037 } | |
1038 new_head->obj_at_put(trace_methods_offset, new_methods()); | |
1039 new_head->obj_at_put(trace_bcis_offset, new_bcis()); | |
1040 | |
1041 _head = new_head(); | |
1042 _methods = new_methods(); | |
1043 _bcis = new_bcis(); | |
1044 _index = 0; | |
1045 } | |
1046 | |
1047 oop backtrace() { | |
1048 flush(); | |
1049 return _backtrace(); | |
1050 } | |
1051 | |
1052 inline void push(methodOop method, short bci, TRAPS) { | |
1053 if (_index >= trace_chunk_size) { | |
1054 methodHandle mhandle(THREAD, method); | |
1055 expand(CHECK); | |
1056 method = mhandle(); | |
1057 } | |
1058 | |
1059 // _methods->obj_at_put(_index, method); | |
1060 *_methods->obj_at_addr(_index) = method; | |
1061 _bcis->ushort_at_put(_index, bci); | |
1062 _index++; | |
1063 _dirty = true; | |
1064 } | |
1065 | |
1066 methodOop current_method() { | |
1067 assert(_index >= 0 && _index < trace_chunk_size, "out of range"); | |
1068 return methodOop(_methods->obj_at(_index)); | |
1069 } | |
1070 | |
1071 jushort current_bci() { | |
1072 assert(_index >= 0 && _index < trace_chunk_size, "out of range"); | |
1073 return _bcis->ushort_at(_index); | |
1074 } | |
1075 }; | |
1076 | |
1077 | |
1078 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, TRAPS) { | |
1079 if (!StackTraceInThrowable) return; | |
1080 ResourceMark rm(THREAD); | |
1081 | |
1082 // Start out by clearing the backtrace for this object, in case the VM | |
1083 // runs out of memory while allocating the stack trace | |
1084 set_backtrace(throwable(), NULL); | |
1085 if (JDK_Version::is_gte_jdk14x_version()) { | |
1086 // New since 1.4, clear lazily constructed Java level stacktrace if | |
1087 // refilling occurs | |
1088 clear_stacktrace(throwable()); | |
1089 } | |
1090 | |
1091 int max_depth = MaxJavaStackTraceDepth; | |
1092 JavaThread* thread = (JavaThread*)THREAD; | |
1093 BacktraceBuilder bt(CHECK); | |
1094 | |
1095 // Instead of using vframe directly, this version of fill_in_stack_trace | |
1096 // basically handles everything by hand. This significantly improved the | |
1097 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows. | |
1098 // See bug 6333838 for more details. | |
1099 // The "ASSERT" here is to verify this method generates the exactly same stack | |
1100 // trace as utilizing vframe. | |
1101 #ifdef ASSERT | |
1102 vframeStream st(thread); | |
1103 methodHandle st_method(THREAD, st.method()); | |
1104 #endif | |
1105 int total_count = 0; | |
1106 RegisterMap map(thread, false); | |
1107 int decode_offset = 0; | |
1108 nmethod* nm = NULL; | |
1109 bool skip_fillInStackTrace_check = false; | |
1110 bool skip_throwableInit_check = false; | |
1111 | |
1112 for (frame fr = thread->last_frame(); max_depth != total_count;) { | |
1113 methodOop method = NULL; | |
1114 int bci = 0; | |
1115 | |
1116 // Compiled java method case. | |
1117 if (decode_offset != 0) { | |
1118 DebugInfoReadStream stream(nm, decode_offset); | |
1119 decode_offset = stream.read_int(); | |
1120 method = (methodOop)nm->oop_at(stream.read_int()); | |
1121 bci = stream.read_bci(); | |
1122 } else { | |
1123 if (fr.is_first_frame()) break; | |
1124 address pc = fr.pc(); | |
1125 if (fr.is_interpreted_frame()) { | |
1126 intptr_t bcx = fr.interpreter_frame_bcx(); | |
1127 method = fr.interpreter_frame_method(); | |
1128 bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx); | |
1129 fr = fr.sender(&map); | |
1130 } else { | |
1131 CodeBlob* cb = fr.cb(); | |
1132 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL | |
1133 // but non nmethod | |
1134 fr = fr.sender(&map); | |
1135 if (cb == NULL || !cb->is_nmethod()) { | |
1136 continue; | |
1137 } | |
1138 nm = (nmethod*)cb; | |
1139 if (nm->method()->is_native()) { | |
1140 method = nm->method(); | |
1141 bci = 0; | |
1142 } else { | |
1143 PcDesc* pd = nm->pc_desc_at(pc); | |
1144 decode_offset = pd->scope_decode_offset(); | |
1145 // if decode_offset is not equal to 0, it will execute the | |
1146 // "compiled java method case" at the beginning of the loop. | |
1147 continue; | |
1148 } | |
1149 } | |
1150 } | |
1151 #ifdef ASSERT | |
1152 assert(st_method() == method && st.bci() == bci, | |
1153 "Wrong stack trace"); | |
1154 st.next(); | |
1155 // vframeStream::method isn't GC-safe so store off a copy | |
1156 // of the methodOop in case we GC. | |
1157 if (!st.at_end()) { | |
1158 st_method = st.method(); | |
1159 } | |
1160 #endif | |
1161 if (!skip_fillInStackTrace_check) { | |
1162 // check "fillInStackTrace" only once, so we negate the flag | |
1163 // after the first time check. | |
1164 skip_fillInStackTrace_check = true; | |
1165 if (method->name() == vmSymbols::fillInStackTrace_name()) { | |
1166 continue; | |
1167 } | |
1168 } | |
1169 // skip <init> methods of the exceptions klass. If there is <init> methods | |
1170 // that belongs to a superclass of the exception we are going to skipping | |
1171 // them in stack trace. This is simlar to classic VM. | |
1172 if (!skip_throwableInit_check) { | |
1173 if (method->name() == vmSymbols::object_initializer_name() && | |
1174 throwable->is_a(method->method_holder())) { | |
1175 continue; | |
1176 } else { | |
1177 // if no "Throwable.init()" method found, we stop checking it next time. | |
1178 skip_throwableInit_check = true; | |
1179 } | |
1180 } | |
1181 bt.push(method, bci, CHECK); | |
1182 total_count++; | |
1183 } | |
1184 | |
1185 // Put completed stack trace into throwable object | |
1186 set_backtrace(throwable(), bt.backtrace()); | |
1187 } | |
1188 | |
1189 void java_lang_Throwable::fill_in_stack_trace(Handle throwable) { | |
1190 // No-op if stack trace is disabled | |
1191 if (!StackTraceInThrowable) { | |
1192 return; | |
1193 } | |
1194 | |
1195 // Disable stack traces for some preallocated out of memory errors | |
1196 if (!Universe::should_fill_in_stack_trace(throwable)) { | |
1197 return; | |
1198 } | |
1199 | |
1200 PRESERVE_EXCEPTION_MARK; | |
1201 | |
1202 JavaThread* thread = JavaThread::active(); | |
1203 fill_in_stack_trace(throwable, thread); | |
1204 // ignore exceptions thrown during stack trace filling | |
1205 CLEAR_PENDING_EXCEPTION; | |
1206 } | |
1207 | |
1208 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) { | |
1209 // Allocate stack trace - backtrace is created but not filled in | |
1210 | |
1211 // No-op if stack trace is disabled | |
1212 if (!StackTraceInThrowable) return; | |
1213 | |
1214 objArrayOop h_oop = oopFactory::new_objectArray(trace_size, CHECK); | |
1215 objArrayHandle backtrace (THREAD, h_oop); | |
1216 objArrayOop m_oop = oopFactory::new_objectArray(trace_chunk_size, CHECK); | |
1217 objArrayHandle methods (THREAD, m_oop); | |
1218 typeArrayOop b = oopFactory::new_shortArray(trace_chunk_size, CHECK); | |
1219 typeArrayHandle bcis(THREAD, b); | |
1220 | |
1221 // backtrace has space for one chunk (next is NULL) | |
1222 backtrace->obj_at_put(trace_methods_offset, methods()); | |
1223 backtrace->obj_at_put(trace_bcis_offset, bcis()); | |
1224 set_backtrace(throwable(), backtrace()); | |
1225 } | |
1226 | |
1227 | |
1228 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) { | |
1229 // Fill in stack trace into preallocated backtrace (no GC) | |
1230 | |
1231 // No-op if stack trace is disabled | |
1232 if (!StackTraceInThrowable) return; | |
1233 | |
1234 assert(throwable->is_a(SystemDictionary::throwable_klass()), "sanity check"); | |
1235 | |
1236 oop backtrace = java_lang_Throwable::backtrace(throwable()); | |
1237 assert(backtrace != NULL, "backtrace not preallocated"); | |
1238 | |
1239 oop m = objArrayOop(backtrace)->obj_at(trace_methods_offset); | |
1240 objArrayOop methods = objArrayOop(m); | |
1241 assert(methods != NULL && methods->length() > 0, "method array not preallocated"); | |
1242 | |
1243 oop b = objArrayOop(backtrace)->obj_at(trace_bcis_offset); | |
1244 typeArrayOop bcis = typeArrayOop(b); | |
1245 assert(bcis != NULL, "bci array not preallocated"); | |
1246 | |
1247 assert(methods->length() == bcis->length(), "method and bci arrays should match"); | |
1248 | |
1249 JavaThread* thread = JavaThread::current(); | |
1250 ResourceMark rm(thread); | |
1251 vframeStream st(thread); | |
1252 | |
1253 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init | |
1254 // methods as preallocated errors aren't created by "java" code. | |
1255 | |
1256 // fill in as much stack trace as possible | |
1257 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth); | |
1258 int chunk_count = 0; | |
1259 | |
1260 for (;!st.at_end(); st.next()) { | |
1261 // add element | |
1262 bcis->ushort_at_put(chunk_count, st.bci()); | |
1263 methods->obj_at_put(chunk_count, st.method()); | |
1264 | |
1265 chunk_count++; | |
1266 | |
1267 // Bail-out for deep stacks | |
1268 if (chunk_count >= max_chunks) break; | |
1269 } | |
1270 } | |
1271 | |
1272 | |
1273 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) { | |
1274 if (throwable == NULL) { | |
1275 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
1276 } | |
1277 objArrayOop chunk = objArrayOop(backtrace(throwable)); | |
1278 int depth = 0; | |
1279 if (chunk != NULL) { | |
1280 // Iterate over chunks and count full ones | |
1281 while (true) { | |
1282 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset)); | |
1283 if (next == NULL) break; | |
1284 depth += trace_chunk_size; | |
1285 chunk = next; | |
1286 } | |
1287 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check"); | |
1288 // Count element in remaining partial chunk | |
1289 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset)); | |
1290 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset)); | |
1291 assert(methods != NULL && bcis != NULL, "sanity check"); | |
1292 for (int i = 0; i < methods->length(); i++) { | |
1293 if (methods->obj_at(i) == NULL) break; | |
1294 depth++; | |
1295 } | |
1296 } | |
1297 return depth; | |
1298 } | |
1299 | |
1300 | |
1301 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) { | |
1302 if (throwable == NULL) { | |
1303 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
1304 } | |
1305 if (index < 0) { | |
1306 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); | |
1307 } | |
1308 // Compute how many chunks to skip and index into actual chunk | |
1309 objArrayOop chunk = objArrayOop(backtrace(throwable)); | |
1310 int skip_chunks = index / trace_chunk_size; | |
1311 int chunk_index = index % trace_chunk_size; | |
1312 while (chunk != NULL && skip_chunks > 0) { | |
1313 chunk = objArrayOop(chunk->obj_at(trace_next_offset)); | |
1314 skip_chunks--; | |
1315 } | |
1316 if (chunk == NULL) { | |
1317 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); | |
1318 } | |
1319 // Get method,bci from chunk | |
1320 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset)); | |
1321 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset)); | |
1322 assert(methods != NULL && bcis != NULL, "sanity check"); | |
1323 methodHandle method(THREAD, methodOop(methods->obj_at(chunk_index))); | |
1324 int bci = bcis->ushort_at(chunk_index); | |
1325 // Chunk can be partial full | |
1326 if (method.is_null()) { | |
1327 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); | |
1328 } | |
1329 | |
1330 oop element = java_lang_StackTraceElement::create(method, bci, CHECK_0); | |
1331 return element; | |
1332 } | |
1333 | |
1334 oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) { | |
1335 // SystemDictionary::stackTraceElement_klass() will be null for pre-1.4 JDKs | |
1336 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4"); | |
1337 | |
1338 // Allocate java.lang.StackTraceElement instance | |
1339 klassOop k = SystemDictionary::stackTraceElement_klass(); | |
1340 instanceKlassHandle ik (THREAD, k); | |
1341 if (ik->should_be_initialized()) { | |
1342 ik->initialize(CHECK_0); | |
1343 } | |
1344 | |
1345 Handle element = ik->allocate_instance_handle(CHECK_0); | |
1346 // Fill in class name | |
1347 ResourceMark rm(THREAD); | |
1348 const char* str = instanceKlass::cast(method->method_holder())->external_name(); | |
1349 oop classname = StringTable::intern((char*) str, CHECK_0); | |
1350 java_lang_StackTraceElement::set_declaringClass(element(), classname); | |
1351 // Fill in method name | |
1352 oop methodname = StringTable::intern(method->name(), CHECK_0); | |
1353 java_lang_StackTraceElement::set_methodName(element(), methodname); | |
1354 // Fill in source file name | |
1355 symbolOop source = instanceKlass::cast(method->method_holder())->source_file_name(); | |
1356 oop filename = StringTable::intern(source, CHECK_0); | |
1357 java_lang_StackTraceElement::set_fileName(element(), filename); | |
1358 // File in source line number | |
1359 int line_number; | |
1360 if (method->is_native()) { | |
1361 // Negative value different from -1 below, enabling Java code in | |
1362 // class java.lang.StackTraceElement to distinguish "native" from | |
1363 // "no LineNumberTable". | |
1364 line_number = -2; | |
1365 } else { | |
1366 // Returns -1 if no LineNumberTable, and otherwise actual line number | |
1367 line_number = method->line_number_from_bci(bci); | |
1368 } | |
1369 java_lang_StackTraceElement::set_lineNumber(element(), line_number); | |
1370 | |
1371 return element(); | |
1372 } | |
1373 | |
1374 | |
1375 void java_lang_reflect_AccessibleObject::compute_offsets() { | |
1376 klassOop k = SystemDictionary::reflect_accessible_object_klass(); | |
1377 COMPUTE_OFFSET("java.lang.reflect.AccessibleObject", override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature()); | |
1378 } | |
1379 | |
1380 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) { | |
1381 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1382 return (jboolean) reflect->bool_field(override_offset); | |
1383 } | |
1384 | |
1385 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) { | |
1386 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1387 reflect->bool_field_put(override_offset, (int) value); | |
1388 } | |
1389 | |
1390 void java_lang_reflect_Method::compute_offsets() { | |
1391 klassOop k = SystemDictionary::reflect_method_klass(); | |
1392 COMPUTE_OFFSET("java.lang.reflect.Method", clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); | |
1393 COMPUTE_OFFSET("java.lang.reflect.Method", name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); | |
1394 COMPUTE_OFFSET("java.lang.reflect.Method", returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature()); | |
1395 COMPUTE_OFFSET("java.lang.reflect.Method", parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature()); | |
1396 COMPUTE_OFFSET("java.lang.reflect.Method", exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature()); | |
1397 COMPUTE_OFFSET("java.lang.reflect.Method", slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); | |
1398 COMPUTE_OFFSET("java.lang.reflect.Method", modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); | |
1399 // The generic signature and annotations fields are only present in 1.5 | |
1400 signature_offset = -1; | |
1401 annotations_offset = -1; | |
1402 parameter_annotations_offset = -1; | |
1403 annotation_default_offset = -1; | |
1404 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Method", signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); | |
1405 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Method", annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); | |
1406 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Method", parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature()); | |
1407 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Method", annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature()); | |
1408 } | |
1409 | |
1410 Handle java_lang_reflect_Method::create(TRAPS) { | |
1411 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1412 klassOop klass = SystemDictionary::reflect_method_klass(); | |
1413 // This class is eagerly initialized during VM initialization, since we keep a refence | |
1414 // to one of the methods | |
1415 assert(instanceKlass::cast(klass)->is_initialized(), "must be initialized"); | |
1416 return instanceKlass::cast(klass)->allocate_instance_handle(CHECK_NH); | |
1417 } | |
1418 | |
1419 oop java_lang_reflect_Method::clazz(oop reflect) { | |
1420 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1421 return reflect->obj_field(clazz_offset); | |
1422 } | |
1423 | |
1424 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) { | |
1425 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1426 reflect->obj_field_put(clazz_offset, value); | |
1427 } | |
1428 | |
1429 int java_lang_reflect_Method::slot(oop reflect) { | |
1430 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1431 return reflect->int_field(slot_offset); | |
1432 } | |
1433 | |
1434 void java_lang_reflect_Method::set_slot(oop reflect, int value) { | |
1435 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1436 reflect->int_field_put(slot_offset, value); | |
1437 } | |
1438 | |
1439 oop java_lang_reflect_Method::name(oop method) { | |
1440 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1441 return method->obj_field(name_offset); | |
1442 } | |
1443 | |
1444 void java_lang_reflect_Method::set_name(oop method, oop value) { | |
1445 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1446 method->obj_field_put(name_offset, value); | |
1447 } | |
1448 | |
1449 oop java_lang_reflect_Method::return_type(oop method) { | |
1450 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1451 return method->obj_field(returnType_offset); | |
1452 } | |
1453 | |
1454 void java_lang_reflect_Method::set_return_type(oop method, oop value) { | |
1455 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1456 method->obj_field_put(returnType_offset, value); | |
1457 } | |
1458 | |
1459 oop java_lang_reflect_Method::parameter_types(oop method) { | |
1460 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1461 return method->obj_field(parameterTypes_offset); | |
1462 } | |
1463 | |
1464 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) { | |
1465 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1466 method->obj_field_put(parameterTypes_offset, value); | |
1467 } | |
1468 | |
1469 oop java_lang_reflect_Method::exception_types(oop method) { | |
1470 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1471 return method->obj_field(exceptionTypes_offset); | |
1472 } | |
1473 | |
1474 void java_lang_reflect_Method::set_exception_types(oop method, oop value) { | |
1475 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1476 method->obj_field_put(exceptionTypes_offset, value); | |
1477 } | |
1478 | |
1479 int java_lang_reflect_Method::modifiers(oop method) { | |
1480 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1481 return method->int_field(modifiers_offset); | |
1482 } | |
1483 | |
1484 void java_lang_reflect_Method::set_modifiers(oop method, int value) { | |
1485 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1486 method->int_field_put(modifiers_offset, value); | |
1487 } | |
1488 | |
1489 bool java_lang_reflect_Method::has_signature_field() { | |
1490 return (signature_offset >= 0); | |
1491 } | |
1492 | |
1493 oop java_lang_reflect_Method::signature(oop method) { | |
1494 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1495 assert(has_signature_field(), "signature field must be present"); | |
1496 return method->obj_field(signature_offset); | |
1497 } | |
1498 | |
1499 void java_lang_reflect_Method::set_signature(oop method, oop value) { | |
1500 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1501 assert(has_signature_field(), "signature field must be present"); | |
1502 method->obj_field_put(signature_offset, value); | |
1503 } | |
1504 | |
1505 bool java_lang_reflect_Method::has_annotations_field() { | |
1506 return (annotations_offset >= 0); | |
1507 } | |
1508 | |
1509 oop java_lang_reflect_Method::annotations(oop method) { | |
1510 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1511 assert(has_annotations_field(), "annotations field must be present"); | |
1512 return method->obj_field(annotations_offset); | |
1513 } | |
1514 | |
1515 void java_lang_reflect_Method::set_annotations(oop method, oop value) { | |
1516 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1517 assert(has_annotations_field(), "annotations field must be present"); | |
1518 method->obj_field_put(annotations_offset, value); | |
1519 } | |
1520 | |
1521 bool java_lang_reflect_Method::has_parameter_annotations_field() { | |
1522 return (parameter_annotations_offset >= 0); | |
1523 } | |
1524 | |
1525 oop java_lang_reflect_Method::parameter_annotations(oop method) { | |
1526 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1527 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); | |
1528 return method->obj_field(parameter_annotations_offset); | |
1529 } | |
1530 | |
1531 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) { | |
1532 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1533 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); | |
1534 method->obj_field_put(parameter_annotations_offset, value); | |
1535 } | |
1536 | |
1537 bool java_lang_reflect_Method::has_annotation_default_field() { | |
1538 return (annotation_default_offset >= 0); | |
1539 } | |
1540 | |
1541 oop java_lang_reflect_Method::annotation_default(oop method) { | |
1542 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1543 assert(has_annotation_default_field(), "annotation default field must be present"); | |
1544 return method->obj_field(annotation_default_offset); | |
1545 } | |
1546 | |
1547 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) { | |
1548 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1549 assert(has_annotation_default_field(), "annotation default field must be present"); | |
1550 method->obj_field_put(annotation_default_offset, value); | |
1551 } | |
1552 | |
1553 void java_lang_reflect_Constructor::compute_offsets() { | |
1554 klassOop k = SystemDictionary::reflect_constructor_klass(); | |
1555 COMPUTE_OFFSET("java.lang.reflect.Constructor", clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); | |
1556 COMPUTE_OFFSET("java.lang.reflect.Constructor", parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature()); | |
1557 COMPUTE_OFFSET("java.lang.reflect.Constructor", exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature()); | |
1558 COMPUTE_OFFSET("java.lang.reflect.Constructor", slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); | |
1559 COMPUTE_OFFSET("java.lang.reflect.Constructor", modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); | |
1560 // The generic signature and annotations fields are only present in 1.5 | |
1561 signature_offset = -1; | |
1562 annotations_offset = -1; | |
1563 parameter_annotations_offset = -1; | |
1564 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Constructor", signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); | |
1565 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Constructor", annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); | |
1566 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Constructor", parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature()); | |
1567 } | |
1568 | |
1569 Handle java_lang_reflect_Constructor::create(TRAPS) { | |
1570 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1571 symbolHandle name = vmSymbolHandles::java_lang_reflect_Constructor(); | |
1572 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH); | |
1573 instanceKlassHandle klass (THREAD, k); | |
1574 // Ensure it is initialized | |
1575 klass->initialize(CHECK_NH); | |
1576 return klass->allocate_instance_handle(CHECK_NH); | |
1577 } | |
1578 | |
1579 oop java_lang_reflect_Constructor::clazz(oop reflect) { | |
1580 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1581 return reflect->obj_field(clazz_offset); | |
1582 } | |
1583 | |
1584 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) { | |
1585 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1586 reflect->obj_field_put(clazz_offset, value); | |
1587 } | |
1588 | |
1589 oop java_lang_reflect_Constructor::parameter_types(oop constructor) { | |
1590 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1591 return constructor->obj_field(parameterTypes_offset); | |
1592 } | |
1593 | |
1594 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) { | |
1595 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1596 constructor->obj_field_put(parameterTypes_offset, value); | |
1597 } | |
1598 | |
1599 oop java_lang_reflect_Constructor::exception_types(oop constructor) { | |
1600 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1601 return constructor->obj_field(exceptionTypes_offset); | |
1602 } | |
1603 | |
1604 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) { | |
1605 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1606 constructor->obj_field_put(exceptionTypes_offset, value); | |
1607 } | |
1608 | |
1609 int java_lang_reflect_Constructor::slot(oop reflect) { | |
1610 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1611 return reflect->int_field(slot_offset); | |
1612 } | |
1613 | |
1614 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) { | |
1615 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1616 reflect->int_field_put(slot_offset, value); | |
1617 } | |
1618 | |
1619 int java_lang_reflect_Constructor::modifiers(oop constructor) { | |
1620 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1621 return constructor->int_field(modifiers_offset); | |
1622 } | |
1623 | |
1624 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) { | |
1625 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1626 constructor->int_field_put(modifiers_offset, value); | |
1627 } | |
1628 | |
1629 bool java_lang_reflect_Constructor::has_signature_field() { | |
1630 return (signature_offset >= 0); | |
1631 } | |
1632 | |
1633 oop java_lang_reflect_Constructor::signature(oop constructor) { | |
1634 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1635 assert(has_signature_field(), "signature field must be present"); | |
1636 return constructor->obj_field(signature_offset); | |
1637 } | |
1638 | |
1639 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) { | |
1640 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1641 assert(has_signature_field(), "signature field must be present"); | |
1642 constructor->obj_field_put(signature_offset, value); | |
1643 } | |
1644 | |
1645 bool java_lang_reflect_Constructor::has_annotations_field() { | |
1646 return (annotations_offset >= 0); | |
1647 } | |
1648 | |
1649 oop java_lang_reflect_Constructor::annotations(oop constructor) { | |
1650 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1651 assert(has_annotations_field(), "annotations field must be present"); | |
1652 return constructor->obj_field(annotations_offset); | |
1653 } | |
1654 | |
1655 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) { | |
1656 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1657 assert(has_annotations_field(), "annotations field must be present"); | |
1658 constructor->obj_field_put(annotations_offset, value); | |
1659 } | |
1660 | |
1661 bool java_lang_reflect_Constructor::has_parameter_annotations_field() { | |
1662 return (parameter_annotations_offset >= 0); | |
1663 } | |
1664 | |
1665 oop java_lang_reflect_Constructor::parameter_annotations(oop method) { | |
1666 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1667 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); | |
1668 return method->obj_field(parameter_annotations_offset); | |
1669 } | |
1670 | |
1671 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) { | |
1672 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1673 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); | |
1674 method->obj_field_put(parameter_annotations_offset, value); | |
1675 } | |
1676 | |
1677 void java_lang_reflect_Field::compute_offsets() { | |
1678 klassOop k = SystemDictionary::reflect_field_klass(); | |
1679 COMPUTE_OFFSET("java.lang.reflect.Field", clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); | |
1680 COMPUTE_OFFSET("java.lang.reflect.Field", name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); | |
1681 COMPUTE_OFFSET("java.lang.reflect.Field", type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature()); | |
1682 COMPUTE_OFFSET("java.lang.reflect.Field", slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); | |
1683 COMPUTE_OFFSET("java.lang.reflect.Field", modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); | |
1684 // The generic signature and annotations fields are only present in 1.5 | |
1685 signature_offset = -1; | |
1686 annotations_offset = -1; | |
1687 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Field", signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); | |
1688 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Field", annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); | |
1689 } | |
1690 | |
1691 Handle java_lang_reflect_Field::create(TRAPS) { | |
1692 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1693 symbolHandle name = vmSymbolHandles::java_lang_reflect_Field(); | |
1694 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH); | |
1695 instanceKlassHandle klass (THREAD, k); | |
1696 // Ensure it is initialized | |
1697 klass->initialize(CHECK_NH); | |
1698 return klass->allocate_instance_handle(CHECK_NH); | |
1699 } | |
1700 | |
1701 oop java_lang_reflect_Field::clazz(oop reflect) { | |
1702 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1703 return reflect->obj_field(clazz_offset); | |
1704 } | |
1705 | |
1706 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) { | |
1707 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1708 reflect->obj_field_put(clazz_offset, value); | |
1709 } | |
1710 | |
1711 oop java_lang_reflect_Field::name(oop field) { | |
1712 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1713 return field->obj_field(name_offset); | |
1714 } | |
1715 | |
1716 void java_lang_reflect_Field::set_name(oop field, oop value) { | |
1717 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1718 field->obj_field_put(name_offset, value); | |
1719 } | |
1720 | |
1721 oop java_lang_reflect_Field::type(oop field) { | |
1722 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1723 return field->obj_field(type_offset); | |
1724 } | |
1725 | |
1726 void java_lang_reflect_Field::set_type(oop field, oop value) { | |
1727 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1728 field->obj_field_put(type_offset, value); | |
1729 } | |
1730 | |
1731 int java_lang_reflect_Field::slot(oop reflect) { | |
1732 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1733 return reflect->int_field(slot_offset); | |
1734 } | |
1735 | |
1736 void java_lang_reflect_Field::set_slot(oop reflect, int value) { | |
1737 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1738 reflect->int_field_put(slot_offset, value); | |
1739 } | |
1740 | |
1741 int java_lang_reflect_Field::modifiers(oop field) { | |
1742 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1743 return field->int_field(modifiers_offset); | |
1744 } | |
1745 | |
1746 void java_lang_reflect_Field::set_modifiers(oop field, int value) { | |
1747 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1748 field->int_field_put(modifiers_offset, value); | |
1749 } | |
1750 | |
1751 bool java_lang_reflect_Field::has_signature_field() { | |
1752 return (signature_offset >= 0); | |
1753 } | |
1754 | |
1755 oop java_lang_reflect_Field::signature(oop field) { | |
1756 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1757 assert(has_signature_field(), "signature field must be present"); | |
1758 return field->obj_field(signature_offset); | |
1759 } | |
1760 | |
1761 void java_lang_reflect_Field::set_signature(oop field, oop value) { | |
1762 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1763 assert(has_signature_field(), "signature field must be present"); | |
1764 field->obj_field_put(signature_offset, value); | |
1765 } | |
1766 | |
1767 bool java_lang_reflect_Field::has_annotations_field() { | |
1768 return (annotations_offset >= 0); | |
1769 } | |
1770 | |
1771 oop java_lang_reflect_Field::annotations(oop field) { | |
1772 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1773 assert(has_annotations_field(), "annotations field must be present"); | |
1774 return field->obj_field(annotations_offset); | |
1775 } | |
1776 | |
1777 void java_lang_reflect_Field::set_annotations(oop field, oop value) { | |
1778 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1779 assert(has_annotations_field(), "annotations field must be present"); | |
1780 field->obj_field_put(annotations_offset, value); | |
1781 } | |
1782 | |
1783 | |
1784 void sun_reflect_ConstantPool::compute_offsets() { | |
1785 klassOop k = SystemDictionary::reflect_constant_pool_klass(); | |
1786 // This null test can be removed post beta | |
1787 if (k != NULL) { | |
1788 COMPUTE_OFFSET("sun.reflect.ConstantPool", _cp_oop_offset, k, vmSymbols::constantPoolOop_name(), vmSymbols::object_signature()); | |
1789 } | |
1790 } | |
1791 | |
1792 | |
1793 Handle sun_reflect_ConstantPool::create(TRAPS) { | |
1794 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1795 klassOop k = SystemDictionary::reflect_constant_pool_klass(); | |
1796 instanceKlassHandle klass (THREAD, k); | |
1797 // Ensure it is initialized | |
1798 klass->initialize(CHECK_NH); | |
1799 return klass->allocate_instance_handle(CHECK_NH); | |
1800 } | |
1801 | |
1802 | |
1803 oop sun_reflect_ConstantPool::cp_oop(oop reflect) { | |
1804 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1805 return reflect->obj_field(_cp_oop_offset); | |
1806 } | |
1807 | |
1808 | |
1809 void sun_reflect_ConstantPool::set_cp_oop(oop reflect, oop value) { | |
1810 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1811 reflect->obj_field_put(_cp_oop_offset, value); | |
1812 } | |
1813 | |
1814 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() { | |
1815 klassOop k = SystemDictionary::reflect_unsafe_static_field_accessor_impl_klass(); | |
1816 // This null test can be removed post beta | |
1817 if (k != NULL) { | |
1818 COMPUTE_OFFSET("sun.reflect.UnsafeStaticFieldAccessorImpl", _base_offset, k, | |
1819 vmSymbols::base_name(), vmSymbols::object_signature()); | |
1820 } | |
1821 } | |
1822 | |
1823 oop java_lang_boxing_object::initialize_and_allocate(klassOop k, TRAPS) { | |
1824 instanceKlassHandle h (THREAD, k); | |
1825 if (!h->is_initialized()) h->initialize(CHECK_0); | |
1826 return h->allocate_instance(THREAD); | |
1827 } | |
1828 | |
1829 | |
1830 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) { | |
1831 oop box; | |
1832 switch (type) { | |
1833 case T_BOOLEAN: | |
1834 box = initialize_and_allocate(SystemDictionary::boolean_klass(), CHECK_0); | |
1835 box->bool_field_put(value_offset, value->z); | |
1836 break; | |
1837 case T_CHAR: | |
1838 box = initialize_and_allocate(SystemDictionary::char_klass(), CHECK_0); | |
1839 box->char_field_put(value_offset, value->c); | |
1840 break; | |
1841 case T_FLOAT: | |
1842 box = initialize_and_allocate(SystemDictionary::float_klass(), CHECK_0); | |
1843 box->float_field_put(value_offset, value->f); | |
1844 break; | |
1845 case T_DOUBLE: | |
1846 box = initialize_and_allocate(SystemDictionary::double_klass(), CHECK_0); | |
1847 box->double_field_put(value_offset, value->d); | |
1848 break; | |
1849 case T_BYTE: | |
1850 box = initialize_and_allocate(SystemDictionary::byte_klass(), CHECK_0); | |
1851 box->byte_field_put(value_offset, value->b); | |
1852 break; | |
1853 case T_SHORT: | |
1854 box = initialize_and_allocate(SystemDictionary::short_klass(), CHECK_0); | |
1855 box->short_field_put(value_offset, value->s); | |
1856 break; | |
1857 case T_INT: | |
1858 box = initialize_and_allocate(SystemDictionary::int_klass(), CHECK_0); | |
1859 box->int_field_put(value_offset, value->i); | |
1860 break; | |
1861 case T_LONG: | |
1862 box = initialize_and_allocate(SystemDictionary::long_klass(), CHECK_0); | |
1863 box->long_field_put(value_offset, value->j); | |
1864 break; | |
1865 default: | |
1866 return NULL; | |
1867 } | |
1868 return box; | |
1869 } | |
1870 | |
1871 | |
1872 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) { | |
1873 klassOop k = box->klass(); | |
1874 if (k == SystemDictionary::boolean_klass()) { | |
1875 value->z = box->bool_field(value_offset); | |
1876 return T_BOOLEAN; | |
1877 } | |
1878 if (k == SystemDictionary::char_klass()) { | |
1879 value->c = box->char_field(value_offset); | |
1880 return T_CHAR; | |
1881 } | |
1882 if (k == SystemDictionary::float_klass()) { | |
1883 value->f = box->float_field(value_offset); | |
1884 return T_FLOAT; | |
1885 } | |
1886 if (k == SystemDictionary::double_klass()) { | |
1887 value->d = box->double_field(value_offset); | |
1888 return T_DOUBLE; | |
1889 } | |
1890 if (k == SystemDictionary::byte_klass()) { | |
1891 value->b = box->byte_field(value_offset); | |
1892 return T_BYTE; | |
1893 } | |
1894 if (k == SystemDictionary::short_klass()) { | |
1895 value->s = box->short_field(value_offset); | |
1896 return T_SHORT; | |
1897 } | |
1898 if (k == SystemDictionary::int_klass()) { | |
1899 value->i = box->int_field(value_offset); | |
1900 return T_INT; | |
1901 } | |
1902 if (k == SystemDictionary::long_klass()) { | |
1903 value->j = box->long_field(value_offset); | |
1904 return T_LONG; | |
1905 } | |
1906 return T_ILLEGAL; | |
1907 } | |
1908 | |
1909 | |
1910 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) { | |
1911 klassOop k = box->klass(); | |
1912 if (k == SystemDictionary::boolean_klass()) { | |
1913 box->bool_field_put(value_offset, value->z); | |
1914 return T_BOOLEAN; | |
1915 } | |
1916 if (k == SystemDictionary::char_klass()) { | |
1917 box->char_field_put(value_offset, value->c); | |
1918 return T_CHAR; | |
1919 } | |
1920 if (k == SystemDictionary::float_klass()) { | |
1921 box->float_field_put(value_offset, value->f); | |
1922 return T_FLOAT; | |
1923 } | |
1924 if (k == SystemDictionary::double_klass()) { | |
1925 box->double_field_put(value_offset, value->d); | |
1926 return T_DOUBLE; | |
1927 } | |
1928 if (k == SystemDictionary::byte_klass()) { | |
1929 box->byte_field_put(value_offset, value->b); | |
1930 return T_BYTE; | |
1931 } | |
1932 if (k == SystemDictionary::short_klass()) { | |
1933 box->short_field_put(value_offset, value->s); | |
1934 return T_SHORT; | |
1935 } | |
1936 if (k == SystemDictionary::int_klass()) { | |
1937 box->int_field_put(value_offset, value->i); | |
1938 return T_INT; | |
1939 } | |
1940 if (k == SystemDictionary::long_klass()) { | |
1941 box->long_field_put(value_offset, value->j); | |
1942 return T_LONG; | |
1943 } | |
1944 return T_ILLEGAL; | |
1945 } | |
1946 | |
1947 | |
1948 // Support for java_lang_ref_Reference | |
1949 | |
1950 void java_lang_ref_Reference::set_referent(oop ref, oop value) { | |
1951 ref->obj_field_put(referent_offset, value); | |
1952 } | |
1953 | |
1954 oop* java_lang_ref_Reference::referent_addr(oop ref) { | |
1955 return ref->obj_field_addr(referent_offset); | |
1956 } | |
1957 | |
1958 void java_lang_ref_Reference::set_next(oop ref, oop value) { | |
1959 ref->obj_field_put(next_offset, value); | |
1960 } | |
1961 | |
1962 oop* java_lang_ref_Reference::next_addr(oop ref) { | |
1963 return ref->obj_field_addr(next_offset); | |
1964 } | |
1965 | |
1966 void java_lang_ref_Reference::set_discovered(oop ref, oop value) { | |
1967 ref->obj_field_put(discovered_offset, value); | |
1968 } | |
1969 | |
1970 oop* java_lang_ref_Reference::discovered_addr(oop ref) { | |
1971 return ref->obj_field_addr(discovered_offset); | |
1972 } | |
1973 | |
1974 oop* java_lang_ref_Reference::pending_list_lock_addr() { | |
1975 instanceKlass* ik = instanceKlass::cast(SystemDictionary::reference_klass()); | |
1976 return (oop*)(((char *)ik->start_of_static_fields()) + static_lock_offset); | |
1977 } | |
1978 | |
1979 oop* java_lang_ref_Reference::pending_list_addr() { | |
1980 instanceKlass* ik = instanceKlass::cast(SystemDictionary::reference_klass()); | |
1981 return (oop *)(((char *)ik->start_of_static_fields()) + static_pending_offset); | |
1982 } | |
1983 | |
1984 | |
1985 // Support for java_lang_ref_SoftReference | |
1986 | |
1987 jlong java_lang_ref_SoftReference::timestamp(oop ref) { | |
1988 return ref->long_field(timestamp_offset); | |
1989 } | |
1990 | |
1991 jlong java_lang_ref_SoftReference::clock() { | |
1992 instanceKlass* ik = instanceKlass::cast(SystemDictionary::soft_reference_klass()); | |
1993 int offset = ik->offset_of_static_fields() + static_clock_offset; | |
1994 | |
1995 return SystemDictionary::soft_reference_klass()->long_field(offset); | |
1996 } | |
1997 | |
1998 void java_lang_ref_SoftReference::set_clock(jlong value) { | |
1999 instanceKlass* ik = instanceKlass::cast(SystemDictionary::soft_reference_klass()); | |
2000 int offset = ik->offset_of_static_fields() + static_clock_offset; | |
2001 | |
2002 SystemDictionary::soft_reference_klass()->long_field_put(offset, value); | |
2003 } | |
2004 | |
2005 | |
2006 // Support for java_security_AccessControlContext | |
2007 | |
2008 int java_security_AccessControlContext::_context_offset = 0; | |
2009 int java_security_AccessControlContext::_privilegedContext_offset = 0; | |
2010 int java_security_AccessControlContext::_isPrivileged_offset = 0; | |
2011 | |
2012 | |
2013 void java_security_AccessControlContext::compute_offsets() { | |
2014 assert(_isPrivileged_offset == 0, "offsets should be initialized only once"); | |
2015 fieldDescriptor fd; | |
2016 instanceKlass* ik = instanceKlass::cast(SystemDictionary::AccessControlContext_klass()); | |
2017 | |
2018 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) { | |
2019 fatal("Invalid layout of java.security.AccessControlContext"); | |
2020 } | |
2021 _context_offset = fd.offset(); | |
2022 | |
2023 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) { | |
2024 fatal("Invalid layout of java.security.AccessControlContext"); | |
2025 } | |
2026 _privilegedContext_offset = fd.offset(); | |
2027 | |
2028 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) { | |
2029 fatal("Invalid layout of java.security.AccessControlContext"); | |
2030 } | |
2031 _isPrivileged_offset = fd.offset(); | |
2032 } | |
2033 | |
2034 | |
2035 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) { | |
2036 assert(_isPrivileged_offset != 0, "offsets should have been initialized"); | |
2037 // Ensure klass is initialized | |
2038 instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0); | |
2039 // Allocate result | |
2040 oop result = instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0); | |
2041 // Fill in values | |
2042 result->obj_field_put(_context_offset, context()); | |
2043 result->obj_field_put(_privilegedContext_offset, privileged_context()); | |
2044 result->bool_field_put(_isPrivileged_offset, isPrivileged); | |
2045 return result; | |
2046 } | |
2047 | |
2048 | |
2049 // Support for java_lang_ClassLoader | |
2050 | |
2051 oop java_lang_ClassLoader::parent(oop loader) { | |
2052 assert(loader->is_oop(), "loader must be oop"); | |
2053 return loader->obj_field(parent_offset); | |
2054 } | |
2055 | |
2056 | |
2057 bool java_lang_ClassLoader::is_trusted_loader(oop loader) { | |
2058 // Fix for 4474172; see evaluation for more details | |
2059 loader = non_reflection_class_loader(loader); | |
2060 | |
2061 oop cl = SystemDictionary::java_system_loader(); | |
2062 while(cl != NULL) { | |
2063 if (cl == loader) return true; | |
2064 cl = parent(cl); | |
2065 } | |
2066 return false; | |
2067 } | |
2068 | |
2069 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) { | |
2070 if (loader != NULL) { | |
2071 // See whether this is one of the class loaders associated with | |
2072 // the generated bytecodes for reflection, and if so, "magically" | |
2073 // delegate to its parent to prevent class loading from occurring | |
2074 // in places where applications using reflection didn't expect it. | |
2075 klassOop delegating_cl_class = SystemDictionary::reflect_delegating_classloader_klass(); | |
2076 // This might be null in non-1.4 JDKs | |
2077 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) { | |
2078 return parent(loader); | |
2079 } | |
2080 } | |
2081 return loader; | |
2082 } | |
2083 | |
2084 | |
2085 // Support for java_lang_System | |
2086 | |
2087 void java_lang_System::compute_offsets() { | |
2088 assert(offset_of_static_fields == 0, "offsets should be initialized only once"); | |
2089 | |
2090 instanceKlass* ik = instanceKlass::cast(SystemDictionary::system_klass()); | |
2091 offset_of_static_fields = ik->offset_of_static_fields(); | |
2092 } | |
2093 | |
2094 int java_lang_System::in_offset_in_bytes() { | |
2095 return (offset_of_static_fields + static_in_offset); | |
2096 } | |
2097 | |
2098 | |
2099 int java_lang_System::out_offset_in_bytes() { | |
2100 return (offset_of_static_fields + static_out_offset); | |
2101 } | |
2102 | |
2103 | |
2104 int java_lang_System::err_offset_in_bytes() { | |
2105 return (offset_of_static_fields + static_err_offset); | |
2106 } | |
2107 | |
2108 | |
2109 | |
2110 int java_lang_String::value_offset; | |
2111 int java_lang_String::offset_offset; | |
2112 int java_lang_String::count_offset; | |
2113 int java_lang_String::hash_offset; | |
2114 int java_lang_Class::klass_offset; | |
2115 int java_lang_Class::array_klass_offset; | |
2116 int java_lang_Class::resolved_constructor_offset; | |
2117 int java_lang_Class::number_of_fake_oop_fields; | |
2118 int java_lang_Throwable::backtrace_offset; | |
2119 int java_lang_Throwable::detailMessage_offset; | |
2120 int java_lang_Throwable::cause_offset; | |
2121 int java_lang_Throwable::stackTrace_offset; | |
2122 int java_lang_reflect_AccessibleObject::override_offset; | |
2123 int java_lang_reflect_Method::clazz_offset; | |
2124 int java_lang_reflect_Method::name_offset; | |
2125 int java_lang_reflect_Method::returnType_offset; | |
2126 int java_lang_reflect_Method::parameterTypes_offset; | |
2127 int java_lang_reflect_Method::exceptionTypes_offset; | |
2128 int java_lang_reflect_Method::slot_offset; | |
2129 int java_lang_reflect_Method::modifiers_offset; | |
2130 int java_lang_reflect_Method::signature_offset; | |
2131 int java_lang_reflect_Method::annotations_offset; | |
2132 int java_lang_reflect_Method::parameter_annotations_offset; | |
2133 int java_lang_reflect_Method::annotation_default_offset; | |
2134 int java_lang_reflect_Constructor::clazz_offset; | |
2135 int java_lang_reflect_Constructor::parameterTypes_offset; | |
2136 int java_lang_reflect_Constructor::exceptionTypes_offset; | |
2137 int java_lang_reflect_Constructor::slot_offset; | |
2138 int java_lang_reflect_Constructor::modifiers_offset; | |
2139 int java_lang_reflect_Constructor::signature_offset; | |
2140 int java_lang_reflect_Constructor::annotations_offset; | |
2141 int java_lang_reflect_Constructor::parameter_annotations_offset; | |
2142 int java_lang_reflect_Field::clazz_offset; | |
2143 int java_lang_reflect_Field::name_offset; | |
2144 int java_lang_reflect_Field::type_offset; | |
2145 int java_lang_reflect_Field::slot_offset; | |
2146 int java_lang_reflect_Field::modifiers_offset; | |
2147 int java_lang_reflect_Field::signature_offset; | |
2148 int java_lang_reflect_Field::annotations_offset; | |
2149 int java_lang_boxing_object::value_offset; | |
2150 int java_lang_ref_Reference::referent_offset; | |
2151 int java_lang_ref_Reference::queue_offset; | |
2152 int java_lang_ref_Reference::next_offset; | |
2153 int java_lang_ref_Reference::discovered_offset; | |
2154 int java_lang_ref_Reference::static_lock_offset; | |
2155 int java_lang_ref_Reference::static_pending_offset; | |
2156 int java_lang_ref_Reference::number_of_fake_oop_fields; | |
2157 int java_lang_ref_SoftReference::timestamp_offset; | |
2158 int java_lang_ref_SoftReference::static_clock_offset; | |
2159 int java_lang_ClassLoader::parent_offset; | |
2160 int java_lang_System::offset_of_static_fields; | |
2161 int java_lang_System::static_in_offset; | |
2162 int java_lang_System::static_out_offset; | |
2163 int java_lang_System::static_err_offset; | |
2164 int java_lang_StackTraceElement::declaringClass_offset; | |
2165 int java_lang_StackTraceElement::methodName_offset; | |
2166 int java_lang_StackTraceElement::fileName_offset; | |
2167 int java_lang_StackTraceElement::lineNumber_offset; | |
2168 int java_lang_AssertionStatusDirectives::classes_offset; | |
2169 int java_lang_AssertionStatusDirectives::classEnabled_offset; | |
2170 int java_lang_AssertionStatusDirectives::packages_offset; | |
2171 int java_lang_AssertionStatusDirectives::packageEnabled_offset; | |
2172 int java_lang_AssertionStatusDirectives::deflt_offset; | |
2173 int java_nio_Buffer::_limit_offset; | |
2174 int sun_misc_AtomicLongCSImpl::_value_offset; | |
2175 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0; | |
2176 int sun_reflect_ConstantPool::_cp_oop_offset; | |
2177 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset; | |
2178 | |
2179 | |
2180 // Support for java_lang_StackTraceElement | |
2181 | |
2182 void java_lang_StackTraceElement::set_fileName(oop element, oop value) { | |
2183 element->obj_field_put(fileName_offset, value); | |
2184 } | |
2185 | |
2186 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) { | |
2187 element->obj_field_put(declaringClass_offset, value); | |
2188 } | |
2189 | |
2190 void java_lang_StackTraceElement::set_methodName(oop element, oop value) { | |
2191 element->obj_field_put(methodName_offset, value); | |
2192 } | |
2193 | |
2194 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) { | |
2195 element->int_field_put(lineNumber_offset, value); | |
2196 } | |
2197 | |
2198 | |
2199 // Support for java Assertions - java_lang_AssertionStatusDirectives. | |
2200 | |
2201 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) { | |
2202 o->obj_field_put(classes_offset, val); | |
2203 } | |
2204 | |
2205 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) { | |
2206 o->obj_field_put(classEnabled_offset, val); | |
2207 } | |
2208 | |
2209 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) { | |
2210 o->obj_field_put(packages_offset, val); | |
2211 } | |
2212 | |
2213 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) { | |
2214 o->obj_field_put(packageEnabled_offset, val); | |
2215 } | |
2216 | |
2217 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) { | |
2218 o->bool_field_put(deflt_offset, val); | |
2219 } | |
2220 | |
2221 | |
2222 // Support for intrinsification of java.nio.Buffer.checkIndex | |
2223 int java_nio_Buffer::limit_offset() { | |
2224 return _limit_offset; | |
2225 } | |
2226 | |
2227 | |
2228 void java_nio_Buffer::compute_offsets() { | |
2229 klassOop k = SystemDictionary::java_nio_Buffer_klass(); | |
2230 COMPUTE_OFFSET("java.nio.Buffer", _limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature()); | |
2231 } | |
2232 | |
2233 // Support for intrinsification of sun.misc.AtomicLongCSImpl.attemptUpdate | |
2234 int sun_misc_AtomicLongCSImpl::value_offset() { | |
2235 assert(SystemDictionary::sun_misc_AtomicLongCSImpl_klass() != NULL, "can't call this"); | |
2236 return _value_offset; | |
2237 } | |
2238 | |
2239 | |
2240 void sun_misc_AtomicLongCSImpl::compute_offsets() { | |
2241 klassOop k = SystemDictionary::sun_misc_AtomicLongCSImpl_klass(); | |
2242 // If this class is not present, its value field offset won't be referenced. | |
2243 if (k != NULL) { | |
2244 COMPUTE_OFFSET("sun.misc.AtomicLongCSImpl", _value_offset, k, vmSymbols::value_name(), vmSymbols::long_signature()); | |
2245 } | |
2246 } | |
2247 | |
2248 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) { | |
2249 if (_owner_offset != 0) return; | |
2250 | |
2251 assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later"); | |
2252 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK); | |
2253 klassOop k = SystemDictionary::abstract_ownable_synchronizer_klass(); | |
2254 COMPUTE_OFFSET("java.util.concurrent.locks.AbstractOwnableSynchronizer", _owner_offset, k, | |
2255 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature()); | |
2256 } | |
2257 | |
2258 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) { | |
2259 assert(_owner_offset != 0, "Must be initialized"); | |
2260 return obj->obj_field(_owner_offset); | |
2261 } | |
2262 | |
2263 // Compute hard-coded offsets | |
2264 // Invoked before SystemDictionary::initialize, so pre-loaded classes | |
2265 // are not available to determine the offset_of_static_fields. | |
2266 void JavaClasses::compute_hard_coded_offsets() { | |
2267 const int x = wordSize; | |
2268 const int header = instanceOopDesc::header_size_in_bytes(); | |
2269 | |
2270 // Do the String Class | |
2271 java_lang_String::value_offset = java_lang_String::hc_value_offset * x + header; | |
2272 java_lang_String::offset_offset = java_lang_String::hc_offset_offset * x + header; | |
2273 java_lang_String::count_offset = java_lang_String::offset_offset + sizeof (jint); | |
2274 java_lang_String::hash_offset = java_lang_String::count_offset + sizeof (jint); | |
2275 | |
2276 // Do the Class Class | |
2277 java_lang_Class::klass_offset = java_lang_Class::hc_klass_offset * x + header; | |
2278 java_lang_Class::array_klass_offset = java_lang_Class::hc_array_klass_offset * x + header; | |
2279 java_lang_Class::resolved_constructor_offset = java_lang_Class::hc_resolved_constructor_offset * x + header; | |
2280 | |
2281 // This is NOT an offset | |
2282 java_lang_Class::number_of_fake_oop_fields = java_lang_Class::hc_number_of_fake_oop_fields; | |
2283 | |
2284 // Throwable Class | |
2285 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header; | |
2286 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header; | |
2287 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header; | |
2288 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header; | |
2289 | |
2290 // java_lang_boxing_object | |
2291 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset * x + header; | |
2292 | |
2293 // java_lang_ref_Reference: | |
2294 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header; | |
2295 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header; | |
2296 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header; | |
2297 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header; | |
2298 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x; | |
2299 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x; | |
2300 // Artificial fields for java_lang_ref_Reference | |
2301 // The first field is for the discovered field added in 1.4 | |
2302 java_lang_ref_Reference::number_of_fake_oop_fields = 1; | |
2303 | |
2304 // java_lang_ref_SoftReference Class | |
2305 java_lang_ref_SoftReference::timestamp_offset = java_lang_ref_SoftReference::hc_timestamp_offset * x + header; | |
2306 // Don't multiply static fields because they are always in wordSize units | |
2307 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x; | |
2308 | |
2309 // java_lang_ClassLoader | |
2310 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header; | |
2311 | |
2312 // java_lang_System | |
2313 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x; | |
2314 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x; | |
2315 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x; | |
2316 | |
2317 // java_lang_StackTraceElement | |
2318 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header; | |
2319 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header; | |
2320 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header; | |
2321 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header; | |
2322 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header; | |
2323 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header; | |
2324 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header; | |
2325 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header; | |
2326 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header; | |
2327 | |
2328 } | |
2329 | |
2330 | |
2331 // Compute non-hard-coded field offsets of all the classes in this file | |
2332 void JavaClasses::compute_offsets() { | |
2333 | |
2334 java_lang_Class::compute_offsets(); | |
2335 java_lang_System::compute_offsets(); | |
2336 java_lang_Thread::compute_offsets(); | |
2337 java_lang_ThreadGroup::compute_offsets(); | |
2338 java_security_AccessControlContext::compute_offsets(); | |
2339 // Initialize reflection classes. The layouts of these classes | |
2340 // changed with the new reflection implementation in JDK 1.4, and | |
2341 // since the Universe doesn't know what JDK version it is until this | |
2342 // point we defer computation of these offsets until now. | |
2343 java_lang_reflect_AccessibleObject::compute_offsets(); | |
2344 java_lang_reflect_Method::compute_offsets(); | |
2345 java_lang_reflect_Constructor::compute_offsets(); | |
2346 java_lang_reflect_Field::compute_offsets(); | |
2347 if (JDK_Version::is_gte_jdk14x_version()) { | |
2348 java_nio_Buffer::compute_offsets(); | |
2349 } | |
2350 if (JDK_Version::is_gte_jdk15x_version()) { | |
2351 sun_reflect_ConstantPool::compute_offsets(); | |
2352 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets(); | |
2353 } | |
2354 sun_misc_AtomicLongCSImpl::compute_offsets(); | |
2355 } | |
2356 | |
2357 #ifndef PRODUCT | |
2358 | |
2359 // These functions exist to assert the validity of hard-coded field offsets to guard | |
2360 // against changes in the class files | |
2361 | |
2362 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) { | |
2363 EXCEPTION_MARK; | |
2364 fieldDescriptor fd; | |
2365 symbolHandle klass_sym = oopFactory::new_symbol_handle(klass_name, CATCH); | |
2366 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); | |
2367 instanceKlassHandle h_klass (THREAD, k); | |
2368 //instanceKlassHandle h_klass(klass); | |
2369 symbolHandle f_name = oopFactory::new_symbol_handle(field_name, CATCH); | |
2370 symbolHandle f_sig = oopFactory::new_symbol_handle(field_sig, CATCH); | |
2371 if (!h_klass->find_local_field(f_name(), f_sig(), &fd)) { | |
2372 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name); | |
2373 return false; | |
2374 } | |
2375 if (fd.is_static()) { | |
2376 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name); | |
2377 return false; | |
2378 } | |
2379 if (fd.offset() == hardcoded_offset ) { | |
2380 return true; | |
2381 } else { | |
2382 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.", | |
2383 klass_name, field_name, hardcoded_offset, fd.offset()); | |
2384 return false; | |
2385 } | |
2386 } | |
2387 | |
2388 | |
2389 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) { | |
2390 EXCEPTION_MARK; | |
2391 fieldDescriptor fd; | |
2392 symbolHandle klass_sym = oopFactory::new_symbol_handle(klass_name, CATCH); | |
2393 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); | |
2394 instanceKlassHandle h_klass (THREAD, k); | |
2395 symbolHandle f_name = oopFactory::new_symbol_handle(field_name, CATCH); | |
2396 symbolHandle f_sig = oopFactory::new_symbol_handle(field_sig, CATCH); | |
2397 if (!h_klass->find_local_field(f_name(), f_sig(), &fd)) { | |
2398 tty->print_cr("Static field %s.%s not found", klass_name, field_name); | |
2399 return false; | |
2400 } | |
2401 if (!fd.is_static()) { | |
2402 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name); | |
2403 return false; | |
2404 } | |
2405 if (fd.offset() == hardcoded_offset + h_klass->offset_of_static_fields()) { | |
2406 return true; | |
2407 } else { | |
2408 tty->print_cr("Offset of static field %s.%s is hardcoded as %d but should really be %d.", klass_name, field_name, hardcoded_offset, fd.offset() - h_klass->offset_of_static_fields()); | |
2409 return false; | |
2410 } | |
2411 } | |
2412 | |
2413 | |
2414 // Check the hard-coded field offsets of all the classes in this file | |
2415 | |
2416 void JavaClasses::check_offsets() { | |
2417 bool valid = true; | |
2418 | |
2419 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ | |
2420 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig) | |
2421 | |
2422 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ | |
2423 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig) | |
2424 | |
2425 // java.lang.String | |
2426 | |
2427 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C"); | |
2428 CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I"); | |
2429 CHECK_OFFSET("java/lang/String", java_lang_String, count, "I"); | |
2430 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I"); | |
2431 | |
2432 // java.lang.Class | |
2433 | |
2434 // Fake fields | |
2435 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked | |
2436 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked | |
2437 // CHECK_OFFSET("java/lang/Class", java_lang_Class, resolved_constructor); // %%% this needs to be checked | |
2438 | |
2439 // java.lang.Throwable | |
2440 | |
2441 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;"); | |
2442 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;"); | |
2443 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;"); | |
2444 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;"); | |
2445 | |
2446 // Boxed primitive objects (java_lang_boxing_object) | |
2447 | |
2448 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z"); | |
2449 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C"); | |
2450 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F"); | |
2451 CHECK_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D"); | |
2452 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B"); | |
2453 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S"); | |
2454 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I"); | |
2455 CHECK_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J"); | |
2456 | |
2457 // java.lang.ClassLoader | |
2458 | |
2459 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;"); | |
2460 | |
2461 // java.lang.System | |
2462 | |
2463 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;"); | |
2464 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;"); | |
2465 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;"); | |
2466 | |
2467 // java.lang.StackTraceElement | |
2468 | |
2469 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;"); | |
2470 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;"); | |
2471 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;"); | |
2472 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I"); | |
2473 | |
2474 // java.lang.ref.Reference | |
2475 | |
2476 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;"); | |
2477 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;"); | |
2478 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;"); | |
2479 // Fake field | |
2480 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;"); | |
2481 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;"); | |
2482 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;"); | |
2483 | |
2484 // java.lang.ref.SoftReference | |
2485 | |
2486 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J"); | |
2487 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J"); | |
2488 | |
2489 // java.lang.AssertionStatusDirectives | |
2490 // | |
2491 // The CheckAssertionStatusDirectives boolean can be removed from here and | |
2492 // globals.hpp after the AssertionStatusDirectives class has been integrated | |
2493 // into merlin "for some time." Without it, the vm will fail with early | |
2494 // merlin builds. | |
2495 | |
2496 if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) { | |
2497 const char* nm = "java/lang/AssertionStatusDirectives"; | |
2498 const char* sig = "[Ljava/lang/String;"; | |
2499 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig); | |
2500 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z"); | |
2501 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig); | |
2502 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z"); | |
2503 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z"); | |
2504 } | |
2505 | |
2506 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed"); | |
2507 } | |
2508 | |
2509 #endif // PRODUCT | |
2510 | |
2511 void javaClasses_init() { | |
2512 JavaClasses::compute_offsets(); | |
2513 JavaClasses::check_offsets(); | |
2514 FilteredFieldsMap::initialize(); // must be done after computing offsets. | |
2515 } |