Mercurial > hg > graal-compiler
annotate src/share/vm/classfile/javaClasses.cpp @ 113:ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv
Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
author | coleenp |
---|---|
date | Sun, 13 Apr 2008 17:43:42 -0400 |
parents | deb97b8ef02b |
children | 60b728ec77c1 |
rev | line source |
---|---|
0 | 1 /* |
2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. | |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 # include "incls/_precompiled.incl" | |
26 # include "incls/_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"); | |
22
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146 HandleMark hm(thread); |
0 | 147 ThreadToNativeFromVM ttn(thread); |
148 js = (_to_java_string_fn)(thread->jni_environment(), str); | |
149 } | |
150 return Handle(THREAD, JNIHandles::resolve(js)); | |
151 } | |
152 | |
22
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153 // Converts a Java String to a native C string that can be used for |
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154 // native OS calls. |
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155 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) { |
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156 |
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157 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*); |
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158 static to_platform_string_fn_t _to_platform_string_fn = NULL; |
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159 |
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160 if (_to_platform_string_fn == NULL) { |
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161 void *lib_handle = os::native_java_library(); |
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162 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, hpi::dll_lookup(lib_handle, "GetStringPlatformChars")); |
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163 if (_to_platform_string_fn == NULL) { |
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164 fatal("GetStringPlatformChars missing"); |
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165 } |
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166 } |
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167 |
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168 char *native_platform_string; |
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169 { JavaThread* thread = (JavaThread*)THREAD; |
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170 assert(thread->is_Java_thread(), "must be java thread"); |
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171 JNIEnv *env = thread->jni_environment(); |
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172 jstring js = (jstring) JNIHandles::make_local(env, java_string()); |
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173 bool is_copy; |
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174 HandleMark hm(thread); |
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175 ThreadToNativeFromVM ttn(thread); |
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176 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy); |
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177 assert(is_copy == JNI_TRUE, "is_copy value changed"); |
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178 JNIHandles::destroy_local(js); |
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179 } |
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180 return native_platform_string; |
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181 } |
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182 |
0 | 183 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) { |
184 oop obj = java_string(); | |
185 // Typical usage is to convert all '/' to '.' in string. | |
186 typeArrayOop value = java_lang_String::value(obj); | |
187 int offset = java_lang_String::offset(obj); | |
188 int length = java_lang_String::length(obj); | |
189 | |
190 // First check if any from_char exist | |
191 int index; // Declared outside, used later | |
192 for (index = 0; index < length; index++) { | |
193 if (value->char_at(index + offset) == from_char) { | |
194 break; | |
195 } | |
196 } | |
197 if (index == length) { | |
198 // No from_char, so do not copy. | |
199 return java_string; | |
200 } | |
201 | |
202 // Create new UNICODE buffer. Must handlize value because GC | |
203 // may happen during String and char array creation. | |
204 typeArrayHandle h_value(THREAD, value); | |
205 Handle string = basic_create(length, false, CHECK_NH); | |
206 | |
207 typeArrayOop from_buffer = h_value(); | |
208 typeArrayOop to_buffer = java_lang_String::value(string()); | |
209 | |
210 // Copy contents | |
211 for (index = 0; index < length; index++) { | |
212 jchar c = from_buffer->char_at(index + offset); | |
213 if (c == from_char) { | |
214 c = to_char; | |
215 } | |
216 to_buffer->char_at_put(index, c); | |
217 } | |
218 return string; | |
219 } | |
220 | |
221 jchar* java_lang_String::as_unicode_string(oop java_string, int& length) { | |
222 typeArrayOop value = java_lang_String::value(java_string); | |
223 int offset = java_lang_String::offset(java_string); | |
224 length = java_lang_String::length(java_string); | |
225 | |
226 jchar* result = NEW_RESOURCE_ARRAY(jchar, length); | |
227 for (int index = 0; index < length; index++) { | |
228 result[index] = value->char_at(index + offset); | |
229 } | |
230 return result; | |
231 } | |
232 | |
233 symbolHandle java_lang_String::as_symbol(Handle java_string, TRAPS) { | |
234 oop obj = java_string(); | |
235 typeArrayOop value = java_lang_String::value(obj); | |
236 int offset = java_lang_String::offset(obj); | |
237 int length = java_lang_String::length(obj); | |
238 | |
239 ResourceMark rm(THREAD); | |
240 symbolHandle result; | |
241 | |
242 if (length > 0) { | |
243 int utf8_length = UNICODE::utf8_length(value->char_at_addr(offset), length); | |
244 char* chars = NEW_RESOURCE_ARRAY(char, utf8_length + 1); | |
245 UNICODE::convert_to_utf8(value->char_at_addr(offset), length, chars); | |
246 // Allocate the symbol | |
247 result = oopFactory::new_symbol_handle(chars, utf8_length, CHECK_(symbolHandle())); | |
248 } else { | |
249 result = oopFactory::new_symbol_handle("", 0, CHECK_(symbolHandle())); | |
250 } | |
251 return result; | |
252 } | |
253 | |
254 int java_lang_String::utf8_length(oop java_string) { | |
255 typeArrayOop value = java_lang_String::value(java_string); | |
256 int offset = java_lang_String::offset(java_string); | |
257 int length = java_lang_String::length(java_string); | |
258 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset); | |
259 return UNICODE::utf8_length(position, length); | |
260 } | |
261 | |
262 char* java_lang_String::as_utf8_string(oop java_string) { | |
263 typeArrayOop value = java_lang_String::value(java_string); | |
264 int offset = java_lang_String::offset(java_string); | |
265 int length = java_lang_String::length(java_string); | |
266 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset); | |
267 return UNICODE::as_utf8(position, length); | |
268 } | |
269 | |
270 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) { | |
271 typeArrayOop value = java_lang_String::value(java_string); | |
272 int offset = java_lang_String::offset(java_string); | |
273 int length = java_lang_String::length(java_string); | |
274 assert(start + len <= length, "just checking"); | |
275 jchar* position = value->char_at_addr(offset + start); | |
276 return UNICODE::as_utf8(position, len); | |
277 } | |
278 | |
279 bool java_lang_String::equals(oop java_string, jchar* chars, int len) { | |
280 assert(SharedSkipVerify || | |
281 java_string->klass() == SystemDictionary::string_klass(), | |
282 "must be java_string"); | |
283 typeArrayOop value = java_lang_String::value(java_string); | |
284 int offset = java_lang_String::offset(java_string); | |
285 int length = java_lang_String::length(java_string); | |
286 if (length != len) { | |
287 return false; | |
288 } | |
289 for (int i = 0; i < len; i++) { | |
290 if (value->char_at(i + offset) != chars[i]) { | |
291 return false; | |
292 } | |
293 } | |
294 return true; | |
295 } | |
296 | |
297 void java_lang_String::print(Handle java_string, outputStream* st) { | |
298 oop obj = java_string(); | |
299 assert(obj->klass() == SystemDictionary::string_klass(), "must be java_string"); | |
300 typeArrayOop value = java_lang_String::value(obj); | |
301 int offset = java_lang_String::offset(obj); | |
302 int length = java_lang_String::length(obj); | |
303 | |
304 int end = MIN2(length, 100); | |
305 if (value == NULL) { | |
306 // This can happen if, e.g., printing a String | |
307 // object before its initializer has been called | |
308 st->print_cr("NULL"); | |
309 } else { | |
310 st->print("\""); | |
311 for (int index = 0; index < length; index++) { | |
312 st->print("%c", value->char_at(index + offset)); | |
313 } | |
314 st->print("\""); | |
315 } | |
316 } | |
317 | |
318 | |
319 oop java_lang_Class::create_mirror(KlassHandle k, TRAPS) { | |
320 assert(k->java_mirror() == NULL, "should only assign mirror once"); | |
321 // Use this moment of initialization to cache modifier_flags also, | |
322 // to support Class.getModifiers(). Instance classes recalculate | |
323 // the cached flags after the class file is parsed, but before the | |
324 // class is put into the system dictionary. | |
325 int computed_modifiers = k->compute_modifier_flags(CHECK_0); | |
326 k->set_modifier_flags(computed_modifiers); | |
327 if (SystemDictionary::class_klass_loaded()) { | |
328 // Allocate mirror (java.lang.Class instance) | |
329 Handle mirror = instanceKlass::cast(SystemDictionary::class_klass())->allocate_permanent_instance(CHECK_0); | |
330 // Setup indirections | |
331 mirror->obj_field_put(klass_offset, k()); | |
332 k->set_java_mirror(mirror()); | |
333 // It might also have a component mirror. This mirror must already exist. | |
334 if (k->oop_is_javaArray()) { | |
335 Handle comp_mirror; | |
336 if (k->oop_is_typeArray()) { | |
337 BasicType type = typeArrayKlass::cast(k->as_klassOop())->element_type(); | |
338 comp_mirror = Universe::java_mirror(type); | |
339 assert(comp_mirror.not_null(), "must have primitive mirror"); | |
340 } else if (k->oop_is_objArray()) { | |
341 klassOop element_klass = objArrayKlass::cast(k->as_klassOop())->element_klass(); | |
342 if (element_klass != NULL | |
343 && (Klass::cast(element_klass)->oop_is_instance() || | |
344 Klass::cast(element_klass)->oop_is_javaArray())) { | |
345 comp_mirror = Klass::cast(element_klass)->java_mirror(); | |
346 assert(comp_mirror.not_null(), "must have element mirror"); | |
347 } | |
348 // else some object array internal to the VM, like systemObjArrayKlassObj | |
349 } | |
350 if (comp_mirror.not_null()) { | |
351 // Two-way link between the array klass and its component mirror: | |
352 arrayKlass::cast(k->as_klassOop())->set_component_mirror(comp_mirror()); | |
353 set_array_klass(comp_mirror(), k->as_klassOop()); | |
354 } | |
355 } | |
356 return mirror(); | |
357 } else { | |
358 return NULL; | |
359 } | |
360 } | |
361 | |
362 | |
363 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) { | |
364 // This should be improved by adding a field at the Java level or by | |
365 // introducing a new VM klass (see comment in ClassFileParser) | |
366 oop java_class = instanceKlass::cast(SystemDictionary::class_klass())->allocate_permanent_instance(CHECK_0); | |
367 if (type != T_VOID) { | |
368 klassOop aklass = Universe::typeArrayKlassObj(type); | |
369 assert(aklass != NULL, "correct bootstrap"); | |
370 set_array_klass(java_class, aklass); | |
371 } | |
372 return java_class; | |
373 } | |
374 | |
375 | |
376 klassOop java_lang_Class::as_klassOop(oop java_class) { | |
377 //%note memory_2 | |
378 klassOop k = klassOop(java_class->obj_field(klass_offset)); | |
379 assert(k == NULL || k->is_klass(), "type check"); | |
380 return k; | |
381 } | |
382 | |
383 | |
384 klassOop java_lang_Class::array_klass(oop java_class) { | |
385 klassOop k = klassOop(java_class->obj_field(array_klass_offset)); | |
386 assert(k == NULL || k->is_klass() && Klass::cast(k)->oop_is_javaArray(), "should be array klass"); | |
387 return k; | |
388 } | |
389 | |
390 | |
391 void java_lang_Class::set_array_klass(oop java_class, klassOop klass) { | |
392 assert(klass->is_klass() && Klass::cast(klass)->oop_is_javaArray(), "should be array klass"); | |
393 java_class->obj_field_put(array_klass_offset, klass); | |
394 } | |
395 | |
396 | |
397 methodOop java_lang_Class::resolved_constructor(oop java_class) { | |
398 oop constructor = java_class->obj_field(resolved_constructor_offset); | |
399 assert(constructor == NULL || constructor->is_method(), "should be method"); | |
400 return methodOop(constructor); | |
401 } | |
402 | |
403 | |
404 void java_lang_Class::set_resolved_constructor(oop java_class, methodOop constructor) { | |
405 assert(constructor->is_method(), "should be method"); | |
406 java_class->obj_field_put(resolved_constructor_offset, constructor); | |
407 } | |
408 | |
409 | |
410 bool java_lang_Class::is_primitive(oop java_class) { | |
411 klassOop k = klassOop(java_class->obj_field(klass_offset)); | |
412 return k == NULL; | |
413 } | |
414 | |
415 | |
416 BasicType java_lang_Class::primitive_type(oop java_class) { | |
417 assert(java_lang_Class::is_primitive(java_class), "just checking"); | |
418 klassOop ak = klassOop(java_class->obj_field(array_klass_offset)); | |
419 BasicType type = T_VOID; | |
420 if (ak != NULL) { | |
421 // Note: create_basic_type_mirror above initializes ak to a non-null value. | |
422 type = arrayKlass::cast(ak)->element_type(); | |
423 } else { | |
424 assert(java_class == Universe::void_mirror(), "only valid non-array primitive"); | |
425 } | |
426 assert(Universe::java_mirror(type) == java_class, "must be consistent"); | |
427 return type; | |
428 } | |
429 | |
430 | |
431 oop java_lang_Class::primitive_mirror(BasicType t) { | |
432 oop mirror = Universe::java_mirror(t); | |
433 assert(mirror != NULL && mirror->is_a(SystemDictionary::class_klass()), "must be a Class"); | |
434 assert(java_lang_Class::is_primitive(mirror), "must be primitive"); | |
435 return mirror; | |
436 } | |
437 | |
438 bool java_lang_Class::offsets_computed = false; | |
439 int java_lang_Class::classRedefinedCount_offset = -1; | |
440 | |
441 void java_lang_Class::compute_offsets() { | |
442 assert(!offsets_computed, "offsets should be initialized only once"); | |
443 offsets_computed = true; | |
444 | |
445 klassOop k = SystemDictionary::class_klass(); | |
446 // The classRedefinedCount field is only present starting in 1.5, | |
447 // so don't go fatal. | |
448 COMPUTE_OPTIONAL_OFFSET("java.lang.Class", classRedefinedCount_offset, | |
449 k, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature()); | |
450 } | |
451 | |
452 int java_lang_Class::classRedefinedCount(oop the_class_mirror) { | |
453 if (!JDK_Version::is_gte_jdk15x_version() | |
454 || classRedefinedCount_offset == -1) { | |
455 // The classRedefinedCount field is only present starting in 1.5. | |
456 // If we don't have an offset for it then just return -1 as a marker. | |
457 return -1; | |
458 } | |
459 | |
460 return the_class_mirror->int_field(classRedefinedCount_offset); | |
461 } | |
462 | |
463 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) { | |
464 if (!JDK_Version::is_gte_jdk15x_version() | |
465 || classRedefinedCount_offset == -1) { | |
466 // The classRedefinedCount field is only present starting in 1.5. | |
467 // If we don't have an offset for it then nothing to set. | |
468 return; | |
469 } | |
470 | |
471 the_class_mirror->int_field_put(classRedefinedCount_offset, value); | |
472 } | |
473 | |
474 | |
475 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the | |
476 // platform thread structure, and a eetop offset which was used for thread | |
477 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures | |
478 // merged, so in the HotSpot VM we just use the eetop field for the thread | |
479 // instead of the privateInfo_offset. | |
480 // | |
481 // Note: The stackSize field is only present starting in 1.4. | |
482 | |
483 int java_lang_Thread::_name_offset = 0; | |
484 int java_lang_Thread::_group_offset = 0; | |
485 int java_lang_Thread::_contextClassLoader_offset = 0; | |
486 int java_lang_Thread::_inheritedAccessControlContext_offset = 0; | |
487 int java_lang_Thread::_priority_offset = 0; | |
488 int java_lang_Thread::_eetop_offset = 0; | |
489 int java_lang_Thread::_daemon_offset = 0; | |
490 int java_lang_Thread::_stillborn_offset = 0; | |
491 int java_lang_Thread::_stackSize_offset = 0; | |
492 int java_lang_Thread::_tid_offset = 0; | |
493 int java_lang_Thread::_thread_status_offset = 0; | |
494 int java_lang_Thread::_park_blocker_offset = 0; | |
495 int java_lang_Thread::_park_event_offset = 0 ; | |
496 | |
497 | |
498 void java_lang_Thread::compute_offsets() { | |
499 assert(_group_offset == 0, "offsets should be initialized only once"); | |
500 | |
501 klassOop k = SystemDictionary::thread_klass(); | |
502 COMPUTE_OFFSET("java.lang.Thread", _name_offset, k, vmSymbols::name_name(), vmSymbols::char_array_signature()); | |
503 COMPUTE_OFFSET("java.lang.Thread", _group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature()); | |
504 COMPUTE_OFFSET("java.lang.Thread", _contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature()); | |
505 COMPUTE_OFFSET("java.lang.Thread", _inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature()); | |
506 COMPUTE_OFFSET("java.lang.Thread", _priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature()); | |
507 COMPUTE_OFFSET("java.lang.Thread", _daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature()); | |
508 COMPUTE_OFFSET("java.lang.Thread", _eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature()); | |
509 COMPUTE_OFFSET("java.lang.Thread", _stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature()); | |
510 // The stackSize field is only present starting in 1.4, so don't go fatal. | |
511 COMPUTE_OPTIONAL_OFFSET("java.lang.Thread", _stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature()); | |
512 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal. | |
513 COMPUTE_OPTIONAL_OFFSET("java.lang.Thread", _tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature()); | |
514 COMPUTE_OPTIONAL_OFFSET("java.lang.Thread", _thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature()); | |
515 // The parkBlocker field is only present starting in 1.6, so don't go fatal. | |
516 COMPUTE_OPTIONAL_OFFSET("java.lang.Thread", _park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature()); | |
517 COMPUTE_OPTIONAL_OFFSET("java.lang.Thread", _park_event_offset, k, vmSymbols::park_event_name(), | |
518 vmSymbols::long_signature()); | |
519 } | |
520 | |
521 | |
522 JavaThread* java_lang_Thread::thread(oop java_thread) { | |
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523 return (JavaThread*)java_thread->address_field(_eetop_offset); |
0 | 524 } |
525 | |
526 | |
527 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) { | |
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528 java_thread->address_field_put(_eetop_offset, (address)thread); |
0 | 529 } |
530 | |
531 | |
532 typeArrayOop java_lang_Thread::name(oop java_thread) { | |
533 oop name = java_thread->obj_field(_name_offset); | |
534 assert(name == NULL || (name->is_typeArray() && typeArrayKlass::cast(name->klass())->element_type() == T_CHAR), "just checking"); | |
535 return typeArrayOop(name); | |
536 } | |
537 | |
538 | |
539 void java_lang_Thread::set_name(oop java_thread, typeArrayOop name) { | |
540 assert(java_thread->obj_field(_name_offset) == NULL, "name should be NULL"); | |
541 java_thread->obj_field_put(_name_offset, name); | |
542 } | |
543 | |
544 | |
545 ThreadPriority java_lang_Thread::priority(oop java_thread) { | |
546 return (ThreadPriority)java_thread->int_field(_priority_offset); | |
547 } | |
548 | |
549 | |
550 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) { | |
551 java_thread->int_field_put(_priority_offset, priority); | |
552 } | |
553 | |
554 | |
555 oop java_lang_Thread::threadGroup(oop java_thread) { | |
556 return java_thread->obj_field(_group_offset); | |
557 } | |
558 | |
559 | |
560 bool java_lang_Thread::is_stillborn(oop java_thread) { | |
561 return java_thread->bool_field(_stillborn_offset) != 0; | |
562 } | |
563 | |
564 | |
565 // We never have reason to turn the stillborn bit off | |
566 void java_lang_Thread::set_stillborn(oop java_thread) { | |
567 java_thread->bool_field_put(_stillborn_offset, true); | |
568 } | |
569 | |
570 | |
571 bool java_lang_Thread::is_alive(oop java_thread) { | |
572 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
573 return (thr != NULL); | |
574 } | |
575 | |
576 | |
577 bool java_lang_Thread::is_daemon(oop java_thread) { | |
578 return java_thread->bool_field(_daemon_offset) != 0; | |
579 } | |
580 | |
581 | |
582 void java_lang_Thread::set_daemon(oop java_thread) { | |
583 java_thread->bool_field_put(_daemon_offset, true); | |
584 } | |
585 | |
586 oop java_lang_Thread::context_class_loader(oop java_thread) { | |
587 return java_thread->obj_field(_contextClassLoader_offset); | |
588 } | |
589 | |
590 oop java_lang_Thread::inherited_access_control_context(oop java_thread) { | |
591 return java_thread->obj_field(_inheritedAccessControlContext_offset); | |
592 } | |
593 | |
594 | |
595 jlong java_lang_Thread::stackSize(oop java_thread) { | |
596 // The stackSize field is only present starting in 1.4 | |
597 if (_stackSize_offset > 0) { | |
598 assert(JDK_Version::is_gte_jdk14x_version(), "sanity check"); | |
599 return java_thread->long_field(_stackSize_offset); | |
600 } else { | |
601 return 0; | |
602 } | |
603 } | |
604 | |
605 // Write the thread status value to threadStatus field in java.lang.Thread java class. | |
606 void java_lang_Thread::set_thread_status(oop java_thread, | |
607 java_lang_Thread::ThreadStatus status) { | |
608 assert(JavaThread::current()->thread_state() == _thread_in_vm, "Java Thread is not running in vm"); | |
609 // The threadStatus is only present starting in 1.5 | |
610 if (_thread_status_offset > 0) { | |
611 java_thread->int_field_put(_thread_status_offset, status); | |
612 } | |
613 } | |
614 | |
615 // Read thread status value from threadStatus field in java.lang.Thread java class. | |
616 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) { | |
617 assert(Thread::current()->is_VM_thread() || | |
618 JavaThread::current()->thread_state() == _thread_in_vm, | |
619 "Java Thread is not running in vm"); | |
620 // The threadStatus is only present starting in 1.5 | |
621 if (_thread_status_offset > 0) { | |
622 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset); | |
623 } else { | |
624 // All we can easily figure out is if it is alive, but that is | |
625 // enough info for a valid unknown status. | |
626 // These aren't restricted to valid set ThreadStatus values, so | |
627 // use JVMTI values and cast. | |
628 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
629 if (thr == NULL) { | |
630 // the thread hasn't run yet or is in the process of exiting | |
631 return NEW; | |
632 } | |
633 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE; | |
634 } | |
635 } | |
636 | |
637 | |
638 jlong java_lang_Thread::thread_id(oop java_thread) { | |
639 // The thread ID field is only present starting in 1.5 | |
640 if (_tid_offset > 0) { | |
641 return java_thread->long_field(_tid_offset); | |
642 } else { | |
643 return 0; | |
644 } | |
645 } | |
646 | |
647 oop java_lang_Thread::park_blocker(oop java_thread) { | |
648 assert(JDK_Version::supports_thread_park_blocker() && _park_blocker_offset != 0, | |
649 "Must support parkBlocker field"); | |
650 | |
651 if (_park_blocker_offset > 0) { | |
652 return java_thread->obj_field(_park_blocker_offset); | |
653 } | |
654 | |
655 return NULL; | |
656 } | |
657 | |
658 jlong java_lang_Thread::park_event(oop java_thread) { | |
659 if (_park_event_offset > 0) { | |
660 return java_thread->long_field(_park_event_offset); | |
661 } | |
662 return 0; | |
663 } | |
664 | |
665 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) { | |
666 if (_park_event_offset > 0) { | |
667 java_thread->long_field_put(_park_event_offset, ptr); | |
668 return true; | |
669 } | |
670 return false; | |
671 } | |
672 | |
673 | |
674 const char* java_lang_Thread::thread_status_name(oop java_thread) { | |
675 assert(JDK_Version::is_gte_jdk15x_version() && _thread_status_offset != 0, "Must have thread status"); | |
676 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset); | |
677 switch (status) { | |
678 case NEW : return "NEW"; | |
679 case RUNNABLE : return "RUNNABLE"; | |
680 case SLEEPING : return "TIMED_WAITING (sleeping)"; | |
681 case IN_OBJECT_WAIT : return "WAITING (on object monitor)"; | |
682 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)"; | |
683 case PARKED : return "WAITING (parking)"; | |
684 case PARKED_TIMED : return "TIMED_WAITING (parking)"; | |
685 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)"; | |
686 case TERMINATED : return "TERMINATED"; | |
687 default : return "UNKNOWN"; | |
688 }; | |
689 } | |
690 int java_lang_ThreadGroup::_parent_offset = 0; | |
691 int java_lang_ThreadGroup::_name_offset = 0; | |
692 int java_lang_ThreadGroup::_threads_offset = 0; | |
693 int java_lang_ThreadGroup::_groups_offset = 0; | |
694 int java_lang_ThreadGroup::_maxPriority_offset = 0; | |
695 int java_lang_ThreadGroup::_destroyed_offset = 0; | |
696 int java_lang_ThreadGroup::_daemon_offset = 0; | |
697 int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0; | |
698 int java_lang_ThreadGroup::_nthreads_offset = 0; | |
699 int java_lang_ThreadGroup::_ngroups_offset = 0; | |
700 | |
701 oop java_lang_ThreadGroup::parent(oop java_thread_group) { | |
702 assert(java_thread_group->is_oop(), "thread group must be oop"); | |
703 return java_thread_group->obj_field(_parent_offset); | |
704 } | |
705 | |
706 // ("name as oop" accessor is not necessary) | |
707 | |
708 typeArrayOop java_lang_ThreadGroup::name(oop java_thread_group) { | |
709 oop name = java_thread_group->obj_field(_name_offset); | |
710 // ThreadGroup.name can be null | |
711 return name == NULL ? (typeArrayOop)NULL : java_lang_String::value(name); | |
712 } | |
713 | |
714 int java_lang_ThreadGroup::nthreads(oop java_thread_group) { | |
715 assert(java_thread_group->is_oop(), "thread group must be oop"); | |
716 return java_thread_group->int_field(_nthreads_offset); | |
717 } | |
718 | |
719 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) { | |
720 oop threads = java_thread_group->obj_field(_threads_offset); | |
721 assert(threads != NULL, "threadgroups should have threads"); | |
722 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code | |
723 return objArrayOop(threads); | |
724 } | |
725 | |
726 int java_lang_ThreadGroup::ngroups(oop java_thread_group) { | |
727 assert(java_thread_group->is_oop(), "thread group must be oop"); | |
728 return java_thread_group->int_field(_ngroups_offset); | |
729 } | |
730 | |
731 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) { | |
732 oop groups = java_thread_group->obj_field(_groups_offset); | |
733 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code | |
734 return objArrayOop(groups); | |
735 } | |
736 | |
737 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) { | |
738 assert(java_thread_group->is_oop(), "thread group must be oop"); | |
739 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset); | |
740 } | |
741 | |
742 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) { | |
743 assert(java_thread_group->is_oop(), "thread group must be oop"); | |
744 return java_thread_group->bool_field(_destroyed_offset) != 0; | |
745 } | |
746 | |
747 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) { | |
748 assert(java_thread_group->is_oop(), "thread group must be oop"); | |
749 return java_thread_group->bool_field(_daemon_offset) != 0; | |
750 } | |
751 | |
752 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) { | |
753 assert(java_thread_group->is_oop(), "thread group must be oop"); | |
754 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0; | |
755 } | |
756 | |
757 void java_lang_ThreadGroup::compute_offsets() { | |
758 assert(_parent_offset == 0, "offsets should be initialized only once"); | |
759 | |
760 klassOop k = SystemDictionary::threadGroup_klass(); | |
761 | |
762 COMPUTE_OFFSET("java.lang.ThreadGroup", _parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature()); | |
763 COMPUTE_OFFSET("java.lang.ThreadGroup", _name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); | |
764 COMPUTE_OFFSET("java.lang.ThreadGroup", _threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature()); | |
765 COMPUTE_OFFSET("java.lang.ThreadGroup", _groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature()); | |
766 COMPUTE_OFFSET("java.lang.ThreadGroup", _maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature()); | |
767 COMPUTE_OFFSET("java.lang.ThreadGroup", _destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature()); | |
768 COMPUTE_OFFSET("java.lang.ThreadGroup", _daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature()); | |
769 COMPUTE_OFFSET("java.lang.ThreadGroup", _vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature()); | |
770 COMPUTE_OFFSET("java.lang.ThreadGroup", _nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature()); | |
771 COMPUTE_OFFSET("java.lang.ThreadGroup", _ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature()); | |
772 } | |
773 | |
774 oop java_lang_Throwable::backtrace(oop throwable) { | |
775 return throwable->obj_field_acquire(backtrace_offset); | |
776 } | |
777 | |
778 | |
779 void java_lang_Throwable::set_backtrace(oop throwable, oop value) { | |
780 throwable->release_obj_field_put(backtrace_offset, value); | |
781 } | |
782 | |
783 | |
784 oop java_lang_Throwable::message(oop throwable) { | |
785 return throwable->obj_field(detailMessage_offset); | |
786 } | |
787 | |
788 | |
789 oop java_lang_Throwable::message(Handle throwable) { | |
790 return throwable->obj_field(detailMessage_offset); | |
791 } | |
792 | |
793 | |
794 void java_lang_Throwable::set_message(oop throwable, oop value) { | |
795 throwable->obj_field_put(detailMessage_offset, value); | |
796 } | |
797 | |
798 | |
799 void java_lang_Throwable::clear_stacktrace(oop throwable) { | |
800 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4"); | |
801 throwable->obj_field_put(stackTrace_offset, NULL); | |
802 } | |
803 | |
804 | |
805 void java_lang_Throwable::print(oop throwable, outputStream* st) { | |
806 ResourceMark rm; | |
807 klassOop k = throwable->klass(); | |
808 assert(k != NULL, "just checking"); | |
809 st->print("%s", instanceKlass::cast(k)->external_name()); | |
810 oop msg = message(throwable); | |
811 if (msg != NULL) { | |
812 st->print(": %s", java_lang_String::as_utf8_string(msg)); | |
813 } | |
814 } | |
815 | |
816 | |
817 void java_lang_Throwable::print(Handle throwable, outputStream* st) { | |
818 ResourceMark rm; | |
819 klassOop k = throwable->klass(); | |
820 assert(k != NULL, "just checking"); | |
821 st->print("%s", instanceKlass::cast(k)->external_name()); | |
822 oop msg = message(throwable); | |
823 if (msg != NULL) { | |
824 st->print(": %s", java_lang_String::as_utf8_string(msg)); | |
825 } | |
826 } | |
827 | |
828 // Print stack trace element to resource allocated buffer | |
829 char* java_lang_Throwable::print_stack_element_to_buffer(methodOop method, int bci) { | |
830 // Get strings and string lengths | |
831 instanceKlass* klass = instanceKlass::cast(method->method_holder()); | |
832 const char* klass_name = klass->external_name(); | |
833 int buf_len = (int)strlen(klass_name); | |
834 char* source_file_name; | |
835 if (klass->source_file_name() == NULL) { | |
836 source_file_name = NULL; | |
837 } else { | |
838 source_file_name = klass->source_file_name()->as_C_string(); | |
839 buf_len += (int)strlen(source_file_name); | |
840 } | |
841 char* method_name = method->name()->as_C_string(); | |
842 buf_len += (int)strlen(method_name); | |
843 | |
844 // Allocate temporary buffer with extra space for formatting and line number | |
845 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64); | |
846 | |
847 // Print stack trace line in buffer | |
848 sprintf(buf, "\tat %s.%s", klass_name, method_name); | |
849 if (method->is_native()) { | |
850 strcat(buf, "(Native Method)"); | |
851 } else { | |
852 int line_number = method->line_number_from_bci(bci); | |
853 if (source_file_name != NULL && (line_number != -1)) { | |
854 // Sourcename and linenumber | |
855 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number); | |
856 } else if (source_file_name != NULL) { | |
857 // Just sourcename | |
858 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name); | |
859 } else { | |
860 // Neither soucename and linenumber | |
861 sprintf(buf + (int)strlen(buf), "(Unknown Source)"); | |
862 } | |
863 nmethod* nm = method->code(); | |
864 if (WizardMode && nm != NULL) { | |
865 sprintf(buf + (int)strlen(buf), "(nmethod %#x)", nm); | |
866 } | |
867 } | |
868 | |
869 return buf; | |
870 } | |
871 | |
872 | |
873 void java_lang_Throwable::print_stack_element(Handle stream, methodOop method, int bci) { | |
874 ResourceMark rm; | |
875 char* buf = print_stack_element_to_buffer(method, bci); | |
876 print_to_stream(stream, buf); | |
877 } | |
878 | |
879 void java_lang_Throwable::print_stack_element(outputStream *st, methodOop method, int bci) { | |
880 ResourceMark rm; | |
881 char* buf = print_stack_element_to_buffer(method, bci); | |
882 st->print_cr("%s", buf); | |
883 } | |
884 | |
885 void java_lang_Throwable::print_to_stream(Handle stream, const char* str) { | |
886 if (stream.is_null()) { | |
887 tty->print_cr("%s", str); | |
888 } else { | |
889 EXCEPTION_MARK; | |
890 JavaValue result(T_VOID); | |
891 Handle arg (THREAD, oopFactory::new_charArray(str, THREAD)); | |
892 if (!HAS_PENDING_EXCEPTION) { | |
893 JavaCalls::call_virtual(&result, | |
894 stream, | |
895 KlassHandle(THREAD, stream->klass()), | |
896 vmSymbolHandles::println_name(), | |
897 vmSymbolHandles::char_array_void_signature(), | |
898 arg, | |
899 THREAD); | |
900 } | |
901 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM. | |
902 if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION; | |
903 } | |
904 | |
905 } | |
906 | |
907 | |
908 const char* java_lang_Throwable::no_stack_trace_message() { | |
909 return "\t<<no stack trace available>>"; | |
910 } | |
911 | |
912 | |
913 // Currently used only for exceptions occurring during startup | |
914 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) { | |
915 Thread *THREAD = Thread::current(); | |
916 Handle h_throwable(THREAD, throwable); | |
917 while (h_throwable.not_null()) { | |
918 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable()))); | |
919 if (result.is_null()) { | |
920 st->print_cr(no_stack_trace_message()); | |
921 return; | |
922 } | |
923 | |
924 while (result.not_null()) { | |
925 objArrayHandle methods (THREAD, | |
926 objArrayOop(result->obj_at(trace_methods_offset))); | |
927 typeArrayHandle bcis (THREAD, | |
928 typeArrayOop(result->obj_at(trace_bcis_offset))); | |
929 | |
930 if (methods.is_null() || bcis.is_null()) { | |
931 st->print_cr(no_stack_trace_message()); | |
932 return; | |
933 } | |
934 | |
935 int length = methods()->length(); | |
936 for (int index = 0; index < length; index++) { | |
937 methodOop method = methodOop(methods()->obj_at(index)); | |
938 if (method == NULL) goto handle_cause; | |
939 int bci = bcis->ushort_at(index); | |
940 print_stack_element(st, method, bci); | |
941 } | |
942 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset))); | |
943 } | |
944 handle_cause: | |
945 { | |
946 EXCEPTION_MARK; | |
947 JavaValue result(T_OBJECT); | |
948 JavaCalls::call_virtual(&result, | |
949 h_throwable, | |
950 KlassHandle(THREAD, h_throwable->klass()), | |
951 vmSymbolHandles::getCause_name(), | |
952 vmSymbolHandles::void_throwable_signature(), | |
953 THREAD); | |
954 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM. | |
955 if (HAS_PENDING_EXCEPTION) { | |
956 CLEAR_PENDING_EXCEPTION; | |
957 h_throwable = Handle(); | |
958 } else { | |
959 h_throwable = Handle(THREAD, (oop) result.get_jobject()); | |
960 if (h_throwable.not_null()) { | |
961 st->print("Caused by: "); | |
962 print(h_throwable, st); | |
963 st->cr(); | |
964 } | |
965 } | |
966 } | |
967 } | |
968 } | |
969 | |
970 | |
971 void java_lang_Throwable::print_stack_trace(oop throwable, oop print_stream) { | |
972 // Note: this is no longer used in Merlin, but we support it for compatibility. | |
973 Thread *thread = Thread::current(); | |
974 Handle stream(thread, print_stream); | |
975 objArrayHandle result (thread, objArrayOop(backtrace(throwable))); | |
976 if (result.is_null()) { | |
977 print_to_stream(stream, no_stack_trace_message()); | |
978 return; | |
979 } | |
980 | |
981 while (result.not_null()) { | |
982 objArrayHandle methods (thread, | |
983 objArrayOop(result->obj_at(trace_methods_offset))); | |
984 typeArrayHandle bcis (thread, | |
985 typeArrayOop(result->obj_at(trace_bcis_offset))); | |
986 | |
987 if (methods.is_null() || bcis.is_null()) { | |
988 print_to_stream(stream, no_stack_trace_message()); | |
989 return; | |
990 } | |
991 | |
992 int length = methods()->length(); | |
993 for (int index = 0; index < length; index++) { | |
994 methodOop method = methodOop(methods()->obj_at(index)); | |
995 if (method == NULL) return; | |
996 int bci = bcis->ushort_at(index); | |
997 print_stack_element(stream, method, bci); | |
998 } | |
999 result = objArrayHandle(thread, objArrayOop(result->obj_at(trace_next_offset))); | |
1000 } | |
1001 } | |
1002 | |
1003 // This class provides a simple wrapper over the internal structure of | |
1004 // exception backtrace to insulate users of the backtrace from needing | |
1005 // to know what it looks like. | |
1006 class BacktraceBuilder: public StackObj { | |
1007 private: | |
1008 Handle _backtrace; | |
1009 objArrayOop _head; | |
1010 objArrayOop _methods; | |
1011 typeArrayOop _bcis; | |
1012 int _index; | |
1013 bool _dirty; | |
1014 No_Safepoint_Verifier _nsv; | |
1015 | |
1016 public: | |
1017 | |
1018 enum { | |
1019 trace_methods_offset = java_lang_Throwable::trace_methods_offset, | |
1020 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset, | |
1021 trace_next_offset = java_lang_Throwable::trace_next_offset, | |
1022 trace_size = java_lang_Throwable::trace_size, | |
1023 trace_chunk_size = java_lang_Throwable::trace_chunk_size | |
1024 }; | |
1025 | |
1026 // constructor for new backtrace | |
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1027 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _dirty(false) { |
0 | 1028 expand(CHECK); |
1029 _backtrace = _head; | |
1030 _index = 0; | |
1031 } | |
1032 | |
1033 void flush() { | |
1034 if (_dirty && _methods != NULL) { | |
1035 BarrierSet* bs = Universe::heap()->barrier_set(); | |
1036 assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt"); | |
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1037 bs->write_ref_array(MemRegion((HeapWord*)_methods->base(), |
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1038 _methods->array_size())); |
0 | 1039 _dirty = false; |
1040 } | |
1041 } | |
1042 | |
1043 void expand(TRAPS) { | |
1044 flush(); | |
1045 | |
1046 objArrayHandle old_head(THREAD, _head); | |
1047 Pause_No_Safepoint_Verifier pnsv(&_nsv); | |
1048 | |
1049 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK); | |
1050 objArrayHandle new_head(THREAD, head); | |
1051 | |
1052 objArrayOop methods = oopFactory::new_objectArray(trace_chunk_size, CHECK); | |
1053 objArrayHandle new_methods(THREAD, methods); | |
1054 | |
1055 typeArrayOop bcis = oopFactory::new_shortArray(trace_chunk_size, CHECK); | |
1056 typeArrayHandle new_bcis(THREAD, bcis); | |
1057 | |
1058 if (!old_head.is_null()) { | |
1059 old_head->obj_at_put(trace_next_offset, new_head()); | |
1060 } | |
1061 new_head->obj_at_put(trace_methods_offset, new_methods()); | |
1062 new_head->obj_at_put(trace_bcis_offset, new_bcis()); | |
1063 | |
1064 _head = new_head(); | |
1065 _methods = new_methods(); | |
1066 _bcis = new_bcis(); | |
1067 _index = 0; | |
1068 } | |
1069 | |
1070 oop backtrace() { | |
1071 flush(); | |
1072 return _backtrace(); | |
1073 } | |
1074 | |
1075 inline void push(methodOop method, short bci, TRAPS) { | |
1076 if (_index >= trace_chunk_size) { | |
1077 methodHandle mhandle(THREAD, method); | |
1078 expand(CHECK); | |
1079 method = mhandle(); | |
1080 } | |
1081 | |
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1082 _methods->obj_at_put(_index, method); |
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1083 // bad for UseCompressedOops |
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1084 // *_methods->obj_at_addr(_index) = method; |
0 | 1085 _bcis->ushort_at_put(_index, bci); |
1086 _index++; | |
1087 _dirty = true; | |
1088 } | |
1089 | |
1090 methodOop current_method() { | |
1091 assert(_index >= 0 && _index < trace_chunk_size, "out of range"); | |
1092 return methodOop(_methods->obj_at(_index)); | |
1093 } | |
1094 | |
1095 jushort current_bci() { | |
1096 assert(_index >= 0 && _index < trace_chunk_size, "out of range"); | |
1097 return _bcis->ushort_at(_index); | |
1098 } | |
1099 }; | |
1100 | |
1101 | |
1102 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, TRAPS) { | |
1103 if (!StackTraceInThrowable) return; | |
1104 ResourceMark rm(THREAD); | |
1105 | |
1106 // Start out by clearing the backtrace for this object, in case the VM | |
1107 // runs out of memory while allocating the stack trace | |
1108 set_backtrace(throwable(), NULL); | |
1109 if (JDK_Version::is_gte_jdk14x_version()) { | |
1110 // New since 1.4, clear lazily constructed Java level stacktrace if | |
1111 // refilling occurs | |
1112 clear_stacktrace(throwable()); | |
1113 } | |
1114 | |
1115 int max_depth = MaxJavaStackTraceDepth; | |
1116 JavaThread* thread = (JavaThread*)THREAD; | |
1117 BacktraceBuilder bt(CHECK); | |
1118 | |
1119 // Instead of using vframe directly, this version of fill_in_stack_trace | |
1120 // basically handles everything by hand. This significantly improved the | |
1121 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows. | |
1122 // See bug 6333838 for more details. | |
1123 // The "ASSERT" here is to verify this method generates the exactly same stack | |
1124 // trace as utilizing vframe. | |
1125 #ifdef ASSERT | |
1126 vframeStream st(thread); | |
1127 methodHandle st_method(THREAD, st.method()); | |
1128 #endif | |
1129 int total_count = 0; | |
1130 RegisterMap map(thread, false); | |
1131 int decode_offset = 0; | |
1132 nmethod* nm = NULL; | |
1133 bool skip_fillInStackTrace_check = false; | |
1134 bool skip_throwableInit_check = false; | |
1135 | |
1136 for (frame fr = thread->last_frame(); max_depth != total_count;) { | |
1137 methodOop method = NULL; | |
1138 int bci = 0; | |
1139 | |
1140 // Compiled java method case. | |
1141 if (decode_offset != 0) { | |
1142 DebugInfoReadStream stream(nm, decode_offset); | |
1143 decode_offset = stream.read_int(); | |
1144 method = (methodOop)nm->oop_at(stream.read_int()); | |
1145 bci = stream.read_bci(); | |
1146 } else { | |
1147 if (fr.is_first_frame()) break; | |
1148 address pc = fr.pc(); | |
1149 if (fr.is_interpreted_frame()) { | |
1150 intptr_t bcx = fr.interpreter_frame_bcx(); | |
1151 method = fr.interpreter_frame_method(); | |
1152 bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx); | |
1153 fr = fr.sender(&map); | |
1154 } else { | |
1155 CodeBlob* cb = fr.cb(); | |
1156 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL | |
1157 // but non nmethod | |
1158 fr = fr.sender(&map); | |
1159 if (cb == NULL || !cb->is_nmethod()) { | |
1160 continue; | |
1161 } | |
1162 nm = (nmethod*)cb; | |
1163 if (nm->method()->is_native()) { | |
1164 method = nm->method(); | |
1165 bci = 0; | |
1166 } else { | |
1167 PcDesc* pd = nm->pc_desc_at(pc); | |
1168 decode_offset = pd->scope_decode_offset(); | |
1169 // if decode_offset is not equal to 0, it will execute the | |
1170 // "compiled java method case" at the beginning of the loop. | |
1171 continue; | |
1172 } | |
1173 } | |
1174 } | |
1175 #ifdef ASSERT | |
1176 assert(st_method() == method && st.bci() == bci, | |
1177 "Wrong stack trace"); | |
1178 st.next(); | |
1179 // vframeStream::method isn't GC-safe so store off a copy | |
1180 // of the methodOop in case we GC. | |
1181 if (!st.at_end()) { | |
1182 st_method = st.method(); | |
1183 } | |
1184 #endif | |
1185 if (!skip_fillInStackTrace_check) { | |
1186 // check "fillInStackTrace" only once, so we negate the flag | |
1187 // after the first time check. | |
1188 skip_fillInStackTrace_check = true; | |
1189 if (method->name() == vmSymbols::fillInStackTrace_name()) { | |
1190 continue; | |
1191 } | |
1192 } | |
1193 // skip <init> methods of the exceptions klass. If there is <init> methods | |
1194 // that belongs to a superclass of the exception we are going to skipping | |
1195 // them in stack trace. This is simlar to classic VM. | |
1196 if (!skip_throwableInit_check) { | |
1197 if (method->name() == vmSymbols::object_initializer_name() && | |
1198 throwable->is_a(method->method_holder())) { | |
1199 continue; | |
1200 } else { | |
1201 // if no "Throwable.init()" method found, we stop checking it next time. | |
1202 skip_throwableInit_check = true; | |
1203 } | |
1204 } | |
1205 bt.push(method, bci, CHECK); | |
1206 total_count++; | |
1207 } | |
1208 | |
1209 // Put completed stack trace into throwable object | |
1210 set_backtrace(throwable(), bt.backtrace()); | |
1211 } | |
1212 | |
1213 void java_lang_Throwable::fill_in_stack_trace(Handle throwable) { | |
1214 // No-op if stack trace is disabled | |
1215 if (!StackTraceInThrowable) { | |
1216 return; | |
1217 } | |
1218 | |
1219 // Disable stack traces for some preallocated out of memory errors | |
1220 if (!Universe::should_fill_in_stack_trace(throwable)) { | |
1221 return; | |
1222 } | |
1223 | |
1224 PRESERVE_EXCEPTION_MARK; | |
1225 | |
1226 JavaThread* thread = JavaThread::active(); | |
1227 fill_in_stack_trace(throwable, thread); | |
1228 // ignore exceptions thrown during stack trace filling | |
1229 CLEAR_PENDING_EXCEPTION; | |
1230 } | |
1231 | |
1232 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) { | |
1233 // Allocate stack trace - backtrace is created but not filled in | |
1234 | |
1235 // No-op if stack trace is disabled | |
1236 if (!StackTraceInThrowable) return; | |
1237 | |
1238 objArrayOop h_oop = oopFactory::new_objectArray(trace_size, CHECK); | |
1239 objArrayHandle backtrace (THREAD, h_oop); | |
1240 objArrayOop m_oop = oopFactory::new_objectArray(trace_chunk_size, CHECK); | |
1241 objArrayHandle methods (THREAD, m_oop); | |
1242 typeArrayOop b = oopFactory::new_shortArray(trace_chunk_size, CHECK); | |
1243 typeArrayHandle bcis(THREAD, b); | |
1244 | |
1245 // backtrace has space for one chunk (next is NULL) | |
1246 backtrace->obj_at_put(trace_methods_offset, methods()); | |
1247 backtrace->obj_at_put(trace_bcis_offset, bcis()); | |
1248 set_backtrace(throwable(), backtrace()); | |
1249 } | |
1250 | |
1251 | |
1252 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) { | |
1253 // Fill in stack trace into preallocated backtrace (no GC) | |
1254 | |
1255 // No-op if stack trace is disabled | |
1256 if (!StackTraceInThrowable) return; | |
1257 | |
1258 assert(throwable->is_a(SystemDictionary::throwable_klass()), "sanity check"); | |
1259 | |
1260 oop backtrace = java_lang_Throwable::backtrace(throwable()); | |
1261 assert(backtrace != NULL, "backtrace not preallocated"); | |
1262 | |
1263 oop m = objArrayOop(backtrace)->obj_at(trace_methods_offset); | |
1264 objArrayOop methods = objArrayOop(m); | |
1265 assert(methods != NULL && methods->length() > 0, "method array not preallocated"); | |
1266 | |
1267 oop b = objArrayOop(backtrace)->obj_at(trace_bcis_offset); | |
1268 typeArrayOop bcis = typeArrayOop(b); | |
1269 assert(bcis != NULL, "bci array not preallocated"); | |
1270 | |
1271 assert(methods->length() == bcis->length(), "method and bci arrays should match"); | |
1272 | |
1273 JavaThread* thread = JavaThread::current(); | |
1274 ResourceMark rm(thread); | |
1275 vframeStream st(thread); | |
1276 | |
1277 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init | |
1278 // methods as preallocated errors aren't created by "java" code. | |
1279 | |
1280 // fill in as much stack trace as possible | |
1281 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth); | |
1282 int chunk_count = 0; | |
1283 | |
1284 for (;!st.at_end(); st.next()) { | |
1285 // add element | |
1286 bcis->ushort_at_put(chunk_count, st.bci()); | |
1287 methods->obj_at_put(chunk_count, st.method()); | |
1288 | |
1289 chunk_count++; | |
1290 | |
1291 // Bail-out for deep stacks | |
1292 if (chunk_count >= max_chunks) break; | |
1293 } | |
1294 } | |
1295 | |
1296 | |
1297 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) { | |
1298 if (throwable == NULL) { | |
1299 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
1300 } | |
1301 objArrayOop chunk = objArrayOop(backtrace(throwable)); | |
1302 int depth = 0; | |
1303 if (chunk != NULL) { | |
1304 // Iterate over chunks and count full ones | |
1305 while (true) { | |
1306 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset)); | |
1307 if (next == NULL) break; | |
1308 depth += trace_chunk_size; | |
1309 chunk = next; | |
1310 } | |
1311 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check"); | |
1312 // Count element in remaining partial chunk | |
1313 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset)); | |
1314 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset)); | |
1315 assert(methods != NULL && bcis != NULL, "sanity check"); | |
1316 for (int i = 0; i < methods->length(); i++) { | |
1317 if (methods->obj_at(i) == NULL) break; | |
1318 depth++; | |
1319 } | |
1320 } | |
1321 return depth; | |
1322 } | |
1323 | |
1324 | |
1325 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) { | |
1326 if (throwable == NULL) { | |
1327 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
1328 } | |
1329 if (index < 0) { | |
1330 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); | |
1331 } | |
1332 // Compute how many chunks to skip and index into actual chunk | |
1333 objArrayOop chunk = objArrayOop(backtrace(throwable)); | |
1334 int skip_chunks = index / trace_chunk_size; | |
1335 int chunk_index = index % trace_chunk_size; | |
1336 while (chunk != NULL && skip_chunks > 0) { | |
1337 chunk = objArrayOop(chunk->obj_at(trace_next_offset)); | |
1338 skip_chunks--; | |
1339 } | |
1340 if (chunk == NULL) { | |
1341 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); | |
1342 } | |
1343 // Get method,bci from chunk | |
1344 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset)); | |
1345 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset)); | |
1346 assert(methods != NULL && bcis != NULL, "sanity check"); | |
1347 methodHandle method(THREAD, methodOop(methods->obj_at(chunk_index))); | |
1348 int bci = bcis->ushort_at(chunk_index); | |
1349 // Chunk can be partial full | |
1350 if (method.is_null()) { | |
1351 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); | |
1352 } | |
1353 | |
1354 oop element = java_lang_StackTraceElement::create(method, bci, CHECK_0); | |
1355 return element; | |
1356 } | |
1357 | |
1358 oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) { | |
1359 // SystemDictionary::stackTraceElement_klass() will be null for pre-1.4 JDKs | |
1360 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4"); | |
1361 | |
1362 // Allocate java.lang.StackTraceElement instance | |
1363 klassOop k = SystemDictionary::stackTraceElement_klass(); | |
1364 instanceKlassHandle ik (THREAD, k); | |
1365 if (ik->should_be_initialized()) { | |
1366 ik->initialize(CHECK_0); | |
1367 } | |
1368 | |
1369 Handle element = ik->allocate_instance_handle(CHECK_0); | |
1370 // Fill in class name | |
1371 ResourceMark rm(THREAD); | |
1372 const char* str = instanceKlass::cast(method->method_holder())->external_name(); | |
1373 oop classname = StringTable::intern((char*) str, CHECK_0); | |
1374 java_lang_StackTraceElement::set_declaringClass(element(), classname); | |
1375 // Fill in method name | |
1376 oop methodname = StringTable::intern(method->name(), CHECK_0); | |
1377 java_lang_StackTraceElement::set_methodName(element(), methodname); | |
1378 // Fill in source file name | |
1379 symbolOop source = instanceKlass::cast(method->method_holder())->source_file_name(); | |
1380 oop filename = StringTable::intern(source, CHECK_0); | |
1381 java_lang_StackTraceElement::set_fileName(element(), filename); | |
1382 // File in source line number | |
1383 int line_number; | |
1384 if (method->is_native()) { | |
1385 // Negative value different from -1 below, enabling Java code in | |
1386 // class java.lang.StackTraceElement to distinguish "native" from | |
1387 // "no LineNumberTable". | |
1388 line_number = -2; | |
1389 } else { | |
1390 // Returns -1 if no LineNumberTable, and otherwise actual line number | |
1391 line_number = method->line_number_from_bci(bci); | |
1392 } | |
1393 java_lang_StackTraceElement::set_lineNumber(element(), line_number); | |
1394 | |
1395 return element(); | |
1396 } | |
1397 | |
1398 | |
1399 void java_lang_reflect_AccessibleObject::compute_offsets() { | |
1400 klassOop k = SystemDictionary::reflect_accessible_object_klass(); | |
1401 COMPUTE_OFFSET("java.lang.reflect.AccessibleObject", override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature()); | |
1402 } | |
1403 | |
1404 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) { | |
1405 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1406 return (jboolean) reflect->bool_field(override_offset); | |
1407 } | |
1408 | |
1409 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) { | |
1410 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1411 reflect->bool_field_put(override_offset, (int) value); | |
1412 } | |
1413 | |
1414 void java_lang_reflect_Method::compute_offsets() { | |
1415 klassOop k = SystemDictionary::reflect_method_klass(); | |
1416 COMPUTE_OFFSET("java.lang.reflect.Method", clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); | |
1417 COMPUTE_OFFSET("java.lang.reflect.Method", name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); | |
1418 COMPUTE_OFFSET("java.lang.reflect.Method", returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature()); | |
1419 COMPUTE_OFFSET("java.lang.reflect.Method", parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature()); | |
1420 COMPUTE_OFFSET("java.lang.reflect.Method", exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature()); | |
1421 COMPUTE_OFFSET("java.lang.reflect.Method", slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); | |
1422 COMPUTE_OFFSET("java.lang.reflect.Method", modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); | |
1423 // The generic signature and annotations fields are only present in 1.5 | |
1424 signature_offset = -1; | |
1425 annotations_offset = -1; | |
1426 parameter_annotations_offset = -1; | |
1427 annotation_default_offset = -1; | |
1428 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Method", signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); | |
1429 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Method", annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); | |
1430 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Method", parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature()); | |
1431 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Method", annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature()); | |
1432 } | |
1433 | |
1434 Handle java_lang_reflect_Method::create(TRAPS) { | |
1435 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1436 klassOop klass = SystemDictionary::reflect_method_klass(); | |
1437 // This class is eagerly initialized during VM initialization, since we keep a refence | |
1438 // to one of the methods | |
1439 assert(instanceKlass::cast(klass)->is_initialized(), "must be initialized"); | |
1440 return instanceKlass::cast(klass)->allocate_instance_handle(CHECK_NH); | |
1441 } | |
1442 | |
1443 oop java_lang_reflect_Method::clazz(oop reflect) { | |
1444 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1445 return reflect->obj_field(clazz_offset); | |
1446 } | |
1447 | |
1448 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) { | |
1449 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1450 reflect->obj_field_put(clazz_offset, value); | |
1451 } | |
1452 | |
1453 int java_lang_reflect_Method::slot(oop reflect) { | |
1454 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1455 return reflect->int_field(slot_offset); | |
1456 } | |
1457 | |
1458 void java_lang_reflect_Method::set_slot(oop reflect, int value) { | |
1459 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1460 reflect->int_field_put(slot_offset, value); | |
1461 } | |
1462 | |
1463 oop java_lang_reflect_Method::name(oop method) { | |
1464 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1465 return method->obj_field(name_offset); | |
1466 } | |
1467 | |
1468 void java_lang_reflect_Method::set_name(oop method, oop value) { | |
1469 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1470 method->obj_field_put(name_offset, value); | |
1471 } | |
1472 | |
1473 oop java_lang_reflect_Method::return_type(oop method) { | |
1474 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1475 return method->obj_field(returnType_offset); | |
1476 } | |
1477 | |
1478 void java_lang_reflect_Method::set_return_type(oop method, oop value) { | |
1479 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1480 method->obj_field_put(returnType_offset, value); | |
1481 } | |
1482 | |
1483 oop java_lang_reflect_Method::parameter_types(oop method) { | |
1484 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1485 return method->obj_field(parameterTypes_offset); | |
1486 } | |
1487 | |
1488 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) { | |
1489 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1490 method->obj_field_put(parameterTypes_offset, value); | |
1491 } | |
1492 | |
1493 oop java_lang_reflect_Method::exception_types(oop method) { | |
1494 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1495 return method->obj_field(exceptionTypes_offset); | |
1496 } | |
1497 | |
1498 void java_lang_reflect_Method::set_exception_types(oop method, oop value) { | |
1499 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1500 method->obj_field_put(exceptionTypes_offset, value); | |
1501 } | |
1502 | |
1503 int java_lang_reflect_Method::modifiers(oop method) { | |
1504 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1505 return method->int_field(modifiers_offset); | |
1506 } | |
1507 | |
1508 void java_lang_reflect_Method::set_modifiers(oop method, int value) { | |
1509 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1510 method->int_field_put(modifiers_offset, value); | |
1511 } | |
1512 | |
1513 bool java_lang_reflect_Method::has_signature_field() { | |
1514 return (signature_offset >= 0); | |
1515 } | |
1516 | |
1517 oop java_lang_reflect_Method::signature(oop method) { | |
1518 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1519 assert(has_signature_field(), "signature field must be present"); | |
1520 return method->obj_field(signature_offset); | |
1521 } | |
1522 | |
1523 void java_lang_reflect_Method::set_signature(oop method, oop value) { | |
1524 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1525 assert(has_signature_field(), "signature field must be present"); | |
1526 method->obj_field_put(signature_offset, value); | |
1527 } | |
1528 | |
1529 bool java_lang_reflect_Method::has_annotations_field() { | |
1530 return (annotations_offset >= 0); | |
1531 } | |
1532 | |
1533 oop java_lang_reflect_Method::annotations(oop method) { | |
1534 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1535 assert(has_annotations_field(), "annotations field must be present"); | |
1536 return method->obj_field(annotations_offset); | |
1537 } | |
1538 | |
1539 void java_lang_reflect_Method::set_annotations(oop method, oop value) { | |
1540 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1541 assert(has_annotations_field(), "annotations field must be present"); | |
1542 method->obj_field_put(annotations_offset, value); | |
1543 } | |
1544 | |
1545 bool java_lang_reflect_Method::has_parameter_annotations_field() { | |
1546 return (parameter_annotations_offset >= 0); | |
1547 } | |
1548 | |
1549 oop java_lang_reflect_Method::parameter_annotations(oop method) { | |
1550 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1551 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); | |
1552 return method->obj_field(parameter_annotations_offset); | |
1553 } | |
1554 | |
1555 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) { | |
1556 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1557 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); | |
1558 method->obj_field_put(parameter_annotations_offset, value); | |
1559 } | |
1560 | |
1561 bool java_lang_reflect_Method::has_annotation_default_field() { | |
1562 return (annotation_default_offset >= 0); | |
1563 } | |
1564 | |
1565 oop java_lang_reflect_Method::annotation_default(oop method) { | |
1566 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1567 assert(has_annotation_default_field(), "annotation default field must be present"); | |
1568 return method->obj_field(annotation_default_offset); | |
1569 } | |
1570 | |
1571 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) { | |
1572 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1573 assert(has_annotation_default_field(), "annotation default field must be present"); | |
1574 method->obj_field_put(annotation_default_offset, value); | |
1575 } | |
1576 | |
1577 void java_lang_reflect_Constructor::compute_offsets() { | |
1578 klassOop k = SystemDictionary::reflect_constructor_klass(); | |
1579 COMPUTE_OFFSET("java.lang.reflect.Constructor", clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); | |
1580 COMPUTE_OFFSET("java.lang.reflect.Constructor", parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature()); | |
1581 COMPUTE_OFFSET("java.lang.reflect.Constructor", exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature()); | |
1582 COMPUTE_OFFSET("java.lang.reflect.Constructor", slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); | |
1583 COMPUTE_OFFSET("java.lang.reflect.Constructor", modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); | |
1584 // The generic signature and annotations fields are only present in 1.5 | |
1585 signature_offset = -1; | |
1586 annotations_offset = -1; | |
1587 parameter_annotations_offset = -1; | |
1588 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Constructor", signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); | |
1589 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Constructor", annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); | |
1590 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Constructor", parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature()); | |
1591 } | |
1592 | |
1593 Handle java_lang_reflect_Constructor::create(TRAPS) { | |
1594 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1595 symbolHandle name = vmSymbolHandles::java_lang_reflect_Constructor(); | |
1596 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH); | |
1597 instanceKlassHandle klass (THREAD, k); | |
1598 // Ensure it is initialized | |
1599 klass->initialize(CHECK_NH); | |
1600 return klass->allocate_instance_handle(CHECK_NH); | |
1601 } | |
1602 | |
1603 oop java_lang_reflect_Constructor::clazz(oop reflect) { | |
1604 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1605 return reflect->obj_field(clazz_offset); | |
1606 } | |
1607 | |
1608 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) { | |
1609 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1610 reflect->obj_field_put(clazz_offset, value); | |
1611 } | |
1612 | |
1613 oop java_lang_reflect_Constructor::parameter_types(oop constructor) { | |
1614 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1615 return constructor->obj_field(parameterTypes_offset); | |
1616 } | |
1617 | |
1618 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) { | |
1619 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1620 constructor->obj_field_put(parameterTypes_offset, value); | |
1621 } | |
1622 | |
1623 oop java_lang_reflect_Constructor::exception_types(oop constructor) { | |
1624 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1625 return constructor->obj_field(exceptionTypes_offset); | |
1626 } | |
1627 | |
1628 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) { | |
1629 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1630 constructor->obj_field_put(exceptionTypes_offset, value); | |
1631 } | |
1632 | |
1633 int java_lang_reflect_Constructor::slot(oop reflect) { | |
1634 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1635 return reflect->int_field(slot_offset); | |
1636 } | |
1637 | |
1638 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) { | |
1639 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1640 reflect->int_field_put(slot_offset, value); | |
1641 } | |
1642 | |
1643 int java_lang_reflect_Constructor::modifiers(oop constructor) { | |
1644 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1645 return constructor->int_field(modifiers_offset); | |
1646 } | |
1647 | |
1648 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) { | |
1649 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1650 constructor->int_field_put(modifiers_offset, value); | |
1651 } | |
1652 | |
1653 bool java_lang_reflect_Constructor::has_signature_field() { | |
1654 return (signature_offset >= 0); | |
1655 } | |
1656 | |
1657 oop java_lang_reflect_Constructor::signature(oop constructor) { | |
1658 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1659 assert(has_signature_field(), "signature field must be present"); | |
1660 return constructor->obj_field(signature_offset); | |
1661 } | |
1662 | |
1663 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) { | |
1664 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1665 assert(has_signature_field(), "signature field must be present"); | |
1666 constructor->obj_field_put(signature_offset, value); | |
1667 } | |
1668 | |
1669 bool java_lang_reflect_Constructor::has_annotations_field() { | |
1670 return (annotations_offset >= 0); | |
1671 } | |
1672 | |
1673 oop java_lang_reflect_Constructor::annotations(oop constructor) { | |
1674 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1675 assert(has_annotations_field(), "annotations field must be present"); | |
1676 return constructor->obj_field(annotations_offset); | |
1677 } | |
1678 | |
1679 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) { | |
1680 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1681 assert(has_annotations_field(), "annotations field must be present"); | |
1682 constructor->obj_field_put(annotations_offset, value); | |
1683 } | |
1684 | |
1685 bool java_lang_reflect_Constructor::has_parameter_annotations_field() { | |
1686 return (parameter_annotations_offset >= 0); | |
1687 } | |
1688 | |
1689 oop java_lang_reflect_Constructor::parameter_annotations(oop method) { | |
1690 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1691 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); | |
1692 return method->obj_field(parameter_annotations_offset); | |
1693 } | |
1694 | |
1695 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) { | |
1696 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1697 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); | |
1698 method->obj_field_put(parameter_annotations_offset, value); | |
1699 } | |
1700 | |
1701 void java_lang_reflect_Field::compute_offsets() { | |
1702 klassOop k = SystemDictionary::reflect_field_klass(); | |
1703 COMPUTE_OFFSET("java.lang.reflect.Field", clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); | |
1704 COMPUTE_OFFSET("java.lang.reflect.Field", name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); | |
1705 COMPUTE_OFFSET("java.lang.reflect.Field", type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature()); | |
1706 COMPUTE_OFFSET("java.lang.reflect.Field", slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); | |
1707 COMPUTE_OFFSET("java.lang.reflect.Field", modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); | |
1708 // The generic signature and annotations fields are only present in 1.5 | |
1709 signature_offset = -1; | |
1710 annotations_offset = -1; | |
1711 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Field", signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); | |
1712 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Field", annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); | |
1713 } | |
1714 | |
1715 Handle java_lang_reflect_Field::create(TRAPS) { | |
1716 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1717 symbolHandle name = vmSymbolHandles::java_lang_reflect_Field(); | |
1718 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH); | |
1719 instanceKlassHandle klass (THREAD, k); | |
1720 // Ensure it is initialized | |
1721 klass->initialize(CHECK_NH); | |
1722 return klass->allocate_instance_handle(CHECK_NH); | |
1723 } | |
1724 | |
1725 oop java_lang_reflect_Field::clazz(oop reflect) { | |
1726 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1727 return reflect->obj_field(clazz_offset); | |
1728 } | |
1729 | |
1730 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) { | |
1731 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1732 reflect->obj_field_put(clazz_offset, value); | |
1733 } | |
1734 | |
1735 oop java_lang_reflect_Field::name(oop field) { | |
1736 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1737 return field->obj_field(name_offset); | |
1738 } | |
1739 | |
1740 void java_lang_reflect_Field::set_name(oop field, oop value) { | |
1741 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1742 field->obj_field_put(name_offset, value); | |
1743 } | |
1744 | |
1745 oop java_lang_reflect_Field::type(oop field) { | |
1746 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1747 return field->obj_field(type_offset); | |
1748 } | |
1749 | |
1750 void java_lang_reflect_Field::set_type(oop field, oop value) { | |
1751 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1752 field->obj_field_put(type_offset, value); | |
1753 } | |
1754 | |
1755 int java_lang_reflect_Field::slot(oop reflect) { | |
1756 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1757 return reflect->int_field(slot_offset); | |
1758 } | |
1759 | |
1760 void java_lang_reflect_Field::set_slot(oop reflect, int value) { | |
1761 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1762 reflect->int_field_put(slot_offset, value); | |
1763 } | |
1764 | |
1765 int java_lang_reflect_Field::modifiers(oop field) { | |
1766 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1767 return field->int_field(modifiers_offset); | |
1768 } | |
1769 | |
1770 void java_lang_reflect_Field::set_modifiers(oop field, int value) { | |
1771 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1772 field->int_field_put(modifiers_offset, value); | |
1773 } | |
1774 | |
1775 bool java_lang_reflect_Field::has_signature_field() { | |
1776 return (signature_offset >= 0); | |
1777 } | |
1778 | |
1779 oop java_lang_reflect_Field::signature(oop field) { | |
1780 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1781 assert(has_signature_field(), "signature field must be present"); | |
1782 return field->obj_field(signature_offset); | |
1783 } | |
1784 | |
1785 void java_lang_reflect_Field::set_signature(oop field, oop value) { | |
1786 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1787 assert(has_signature_field(), "signature field must be present"); | |
1788 field->obj_field_put(signature_offset, value); | |
1789 } | |
1790 | |
1791 bool java_lang_reflect_Field::has_annotations_field() { | |
1792 return (annotations_offset >= 0); | |
1793 } | |
1794 | |
1795 oop java_lang_reflect_Field::annotations(oop field) { | |
1796 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1797 assert(has_annotations_field(), "annotations field must be present"); | |
1798 return field->obj_field(annotations_offset); | |
1799 } | |
1800 | |
1801 void java_lang_reflect_Field::set_annotations(oop field, oop value) { | |
1802 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1803 assert(has_annotations_field(), "annotations field must be present"); | |
1804 field->obj_field_put(annotations_offset, value); | |
1805 } | |
1806 | |
1807 | |
1808 void sun_reflect_ConstantPool::compute_offsets() { | |
1809 klassOop k = SystemDictionary::reflect_constant_pool_klass(); | |
1810 // This null test can be removed post beta | |
1811 if (k != NULL) { | |
1812 COMPUTE_OFFSET("sun.reflect.ConstantPool", _cp_oop_offset, k, vmSymbols::constantPoolOop_name(), vmSymbols::object_signature()); | |
1813 } | |
1814 } | |
1815 | |
1816 | |
1817 Handle sun_reflect_ConstantPool::create(TRAPS) { | |
1818 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1819 klassOop k = SystemDictionary::reflect_constant_pool_klass(); | |
1820 instanceKlassHandle klass (THREAD, k); | |
1821 // Ensure it is initialized | |
1822 klass->initialize(CHECK_NH); | |
1823 return klass->allocate_instance_handle(CHECK_NH); | |
1824 } | |
1825 | |
1826 | |
1827 oop sun_reflect_ConstantPool::cp_oop(oop reflect) { | |
1828 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1829 return reflect->obj_field(_cp_oop_offset); | |
1830 } | |
1831 | |
1832 | |
1833 void sun_reflect_ConstantPool::set_cp_oop(oop reflect, oop value) { | |
1834 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
1835 reflect->obj_field_put(_cp_oop_offset, value); | |
1836 } | |
1837 | |
1838 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() { | |
1839 klassOop k = SystemDictionary::reflect_unsafe_static_field_accessor_impl_klass(); | |
1840 // This null test can be removed post beta | |
1841 if (k != NULL) { | |
1842 COMPUTE_OFFSET("sun.reflect.UnsafeStaticFieldAccessorImpl", _base_offset, k, | |
1843 vmSymbols::base_name(), vmSymbols::object_signature()); | |
1844 } | |
1845 } | |
1846 | |
1847 oop java_lang_boxing_object::initialize_and_allocate(klassOop k, TRAPS) { | |
1848 instanceKlassHandle h (THREAD, k); | |
1849 if (!h->is_initialized()) h->initialize(CHECK_0); | |
1850 return h->allocate_instance(THREAD); | |
1851 } | |
1852 | |
1853 | |
1854 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) { | |
1855 oop box; | |
1856 switch (type) { | |
1857 case T_BOOLEAN: | |
1858 box = initialize_and_allocate(SystemDictionary::boolean_klass(), CHECK_0); | |
1859 box->bool_field_put(value_offset, value->z); | |
1860 break; | |
1861 case T_CHAR: | |
1862 box = initialize_and_allocate(SystemDictionary::char_klass(), CHECK_0); | |
1863 box->char_field_put(value_offset, value->c); | |
1864 break; | |
1865 case T_FLOAT: | |
1866 box = initialize_and_allocate(SystemDictionary::float_klass(), CHECK_0); | |
1867 box->float_field_put(value_offset, value->f); | |
1868 break; | |
1869 case T_DOUBLE: | |
1870 box = initialize_and_allocate(SystemDictionary::double_klass(), CHECK_0); | |
1871 box->double_field_put(value_offset, value->d); | |
1872 break; | |
1873 case T_BYTE: | |
1874 box = initialize_and_allocate(SystemDictionary::byte_klass(), CHECK_0); | |
1875 box->byte_field_put(value_offset, value->b); | |
1876 break; | |
1877 case T_SHORT: | |
1878 box = initialize_and_allocate(SystemDictionary::short_klass(), CHECK_0); | |
1879 box->short_field_put(value_offset, value->s); | |
1880 break; | |
1881 case T_INT: | |
1882 box = initialize_and_allocate(SystemDictionary::int_klass(), CHECK_0); | |
1883 box->int_field_put(value_offset, value->i); | |
1884 break; | |
1885 case T_LONG: | |
1886 box = initialize_and_allocate(SystemDictionary::long_klass(), CHECK_0); | |
1887 box->long_field_put(value_offset, value->j); | |
1888 break; | |
1889 default: | |
1890 return NULL; | |
1891 } | |
1892 return box; | |
1893 } | |
1894 | |
1895 | |
1896 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) { | |
1897 klassOop k = box->klass(); | |
1898 if (k == SystemDictionary::boolean_klass()) { | |
1899 value->z = box->bool_field(value_offset); | |
1900 return T_BOOLEAN; | |
1901 } | |
1902 if (k == SystemDictionary::char_klass()) { | |
1903 value->c = box->char_field(value_offset); | |
1904 return T_CHAR; | |
1905 } | |
1906 if (k == SystemDictionary::float_klass()) { | |
1907 value->f = box->float_field(value_offset); | |
1908 return T_FLOAT; | |
1909 } | |
1910 if (k == SystemDictionary::double_klass()) { | |
1911 value->d = box->double_field(value_offset); | |
1912 return T_DOUBLE; | |
1913 } | |
1914 if (k == SystemDictionary::byte_klass()) { | |
1915 value->b = box->byte_field(value_offset); | |
1916 return T_BYTE; | |
1917 } | |
1918 if (k == SystemDictionary::short_klass()) { | |
1919 value->s = box->short_field(value_offset); | |
1920 return T_SHORT; | |
1921 } | |
1922 if (k == SystemDictionary::int_klass()) { | |
1923 value->i = box->int_field(value_offset); | |
1924 return T_INT; | |
1925 } | |
1926 if (k == SystemDictionary::long_klass()) { | |
1927 value->j = box->long_field(value_offset); | |
1928 return T_LONG; | |
1929 } | |
1930 return T_ILLEGAL; | |
1931 } | |
1932 | |
1933 | |
1934 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) { | |
1935 klassOop k = box->klass(); | |
1936 if (k == SystemDictionary::boolean_klass()) { | |
1937 box->bool_field_put(value_offset, value->z); | |
1938 return T_BOOLEAN; | |
1939 } | |
1940 if (k == SystemDictionary::char_klass()) { | |
1941 box->char_field_put(value_offset, value->c); | |
1942 return T_CHAR; | |
1943 } | |
1944 if (k == SystemDictionary::float_klass()) { | |
1945 box->float_field_put(value_offset, value->f); | |
1946 return T_FLOAT; | |
1947 } | |
1948 if (k == SystemDictionary::double_klass()) { | |
1949 box->double_field_put(value_offset, value->d); | |
1950 return T_DOUBLE; | |
1951 } | |
1952 if (k == SystemDictionary::byte_klass()) { | |
1953 box->byte_field_put(value_offset, value->b); | |
1954 return T_BYTE; | |
1955 } | |
1956 if (k == SystemDictionary::short_klass()) { | |
1957 box->short_field_put(value_offset, value->s); | |
1958 return T_SHORT; | |
1959 } | |
1960 if (k == SystemDictionary::int_klass()) { | |
1961 box->int_field_put(value_offset, value->i); | |
1962 return T_INT; | |
1963 } | |
1964 if (k == SystemDictionary::long_klass()) { | |
1965 box->long_field_put(value_offset, value->j); | |
1966 return T_LONG; | |
1967 } | |
1968 return T_ILLEGAL; | |
1969 } | |
1970 | |
1971 | |
1972 // Support for java_lang_ref_Reference | |
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1973 oop java_lang_ref_Reference::pending_list_lock() { |
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1974 instanceKlass* ik = instanceKlass::cast(SystemDictionary::reference_klass()); |
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1975 char *addr = (((char *)ik->start_of_static_fields()) + static_lock_offset); |
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1976 if (UseCompressedOops) { |
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1977 return oopDesc::load_decode_heap_oop((narrowOop *)addr); |
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1978 } else { |
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1979 return oopDesc::load_decode_heap_oop((oop*)addr); |
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1980 } |
0 | 1981 } |
1982 | |
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1983 HeapWord *java_lang_ref_Reference::pending_list_addr() { |
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1984 instanceKlass* ik = instanceKlass::cast(SystemDictionary::reference_klass()); |
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1985 char *addr = (((char *)ik->start_of_static_fields()) + static_pending_offset); |
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1986 // XXX This might not be HeapWord aligned, almost rather be char *. |
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1987 return (HeapWord*)addr; |
0 | 1988 } |
1989 | |
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1990 oop java_lang_ref_Reference::pending_list() { |
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1991 char *addr = (char *)pending_list_addr(); |
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1992 if (UseCompressedOops) { |
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1993 return oopDesc::load_decode_heap_oop((narrowOop *)addr); |
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1994 } else { |
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1995 return oopDesc::load_decode_heap_oop((oop*)addr); |
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1996 } |
0 | 1997 } |
1998 | |
1999 | |
2000 // Support for java_lang_ref_SoftReference | |
2001 | |
2002 jlong java_lang_ref_SoftReference::timestamp(oop ref) { | |
2003 return ref->long_field(timestamp_offset); | |
2004 } | |
2005 | |
2006 jlong java_lang_ref_SoftReference::clock() { | |
2007 instanceKlass* ik = instanceKlass::cast(SystemDictionary::soft_reference_klass()); | |
2008 int offset = ik->offset_of_static_fields() + static_clock_offset; | |
2009 | |
2010 return SystemDictionary::soft_reference_klass()->long_field(offset); | |
2011 } | |
2012 | |
2013 void java_lang_ref_SoftReference::set_clock(jlong value) { | |
2014 instanceKlass* ik = instanceKlass::cast(SystemDictionary::soft_reference_klass()); | |
2015 int offset = ik->offset_of_static_fields() + static_clock_offset; | |
2016 | |
2017 SystemDictionary::soft_reference_klass()->long_field_put(offset, value); | |
2018 } | |
2019 | |
2020 | |
2021 // Support for java_security_AccessControlContext | |
2022 | |
2023 int java_security_AccessControlContext::_context_offset = 0; | |
2024 int java_security_AccessControlContext::_privilegedContext_offset = 0; | |
2025 int java_security_AccessControlContext::_isPrivileged_offset = 0; | |
2026 | |
2027 | |
2028 void java_security_AccessControlContext::compute_offsets() { | |
2029 assert(_isPrivileged_offset == 0, "offsets should be initialized only once"); | |
2030 fieldDescriptor fd; | |
2031 instanceKlass* ik = instanceKlass::cast(SystemDictionary::AccessControlContext_klass()); | |
2032 | |
2033 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) { | |
2034 fatal("Invalid layout of java.security.AccessControlContext"); | |
2035 } | |
2036 _context_offset = fd.offset(); | |
2037 | |
2038 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) { | |
2039 fatal("Invalid layout of java.security.AccessControlContext"); | |
2040 } | |
2041 _privilegedContext_offset = fd.offset(); | |
2042 | |
2043 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) { | |
2044 fatal("Invalid layout of java.security.AccessControlContext"); | |
2045 } | |
2046 _isPrivileged_offset = fd.offset(); | |
2047 } | |
2048 | |
2049 | |
2050 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) { | |
2051 assert(_isPrivileged_offset != 0, "offsets should have been initialized"); | |
2052 // Ensure klass is initialized | |
2053 instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0); | |
2054 // Allocate result | |
2055 oop result = instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0); | |
2056 // Fill in values | |
2057 result->obj_field_put(_context_offset, context()); | |
2058 result->obj_field_put(_privilegedContext_offset, privileged_context()); | |
2059 result->bool_field_put(_isPrivileged_offset, isPrivileged); | |
2060 return result; | |
2061 } | |
2062 | |
2063 | |
2064 // Support for java_lang_ClassLoader | |
2065 | |
2066 oop java_lang_ClassLoader::parent(oop loader) { | |
2067 assert(loader->is_oop(), "loader must be oop"); | |
2068 return loader->obj_field(parent_offset); | |
2069 } | |
2070 | |
2071 | |
2072 bool java_lang_ClassLoader::is_trusted_loader(oop loader) { | |
2073 // Fix for 4474172; see evaluation for more details | |
2074 loader = non_reflection_class_loader(loader); | |
2075 | |
2076 oop cl = SystemDictionary::java_system_loader(); | |
2077 while(cl != NULL) { | |
2078 if (cl == loader) return true; | |
2079 cl = parent(cl); | |
2080 } | |
2081 return false; | |
2082 } | |
2083 | |
2084 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) { | |
2085 if (loader != NULL) { | |
2086 // See whether this is one of the class loaders associated with | |
2087 // the generated bytecodes for reflection, and if so, "magically" | |
2088 // delegate to its parent to prevent class loading from occurring | |
2089 // in places where applications using reflection didn't expect it. | |
2090 klassOop delegating_cl_class = SystemDictionary::reflect_delegating_classloader_klass(); | |
2091 // This might be null in non-1.4 JDKs | |
2092 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) { | |
2093 return parent(loader); | |
2094 } | |
2095 } | |
2096 return loader; | |
2097 } | |
2098 | |
2099 | |
2100 // Support for java_lang_System | |
2101 | |
2102 void java_lang_System::compute_offsets() { | |
2103 assert(offset_of_static_fields == 0, "offsets should be initialized only once"); | |
2104 | |
2105 instanceKlass* ik = instanceKlass::cast(SystemDictionary::system_klass()); | |
2106 offset_of_static_fields = ik->offset_of_static_fields(); | |
2107 } | |
2108 | |
2109 int java_lang_System::in_offset_in_bytes() { | |
2110 return (offset_of_static_fields + static_in_offset); | |
2111 } | |
2112 | |
2113 | |
2114 int java_lang_System::out_offset_in_bytes() { | |
2115 return (offset_of_static_fields + static_out_offset); | |
2116 } | |
2117 | |
2118 | |
2119 int java_lang_System::err_offset_in_bytes() { | |
2120 return (offset_of_static_fields + static_err_offset); | |
2121 } | |
2122 | |
2123 | |
2124 | |
2125 int java_lang_String::value_offset; | |
2126 int java_lang_String::offset_offset; | |
2127 int java_lang_String::count_offset; | |
2128 int java_lang_String::hash_offset; | |
2129 int java_lang_Class::klass_offset; | |
2130 int java_lang_Class::array_klass_offset; | |
2131 int java_lang_Class::resolved_constructor_offset; | |
2132 int java_lang_Class::number_of_fake_oop_fields; | |
2133 int java_lang_Throwable::backtrace_offset; | |
2134 int java_lang_Throwable::detailMessage_offset; | |
2135 int java_lang_Throwable::cause_offset; | |
2136 int java_lang_Throwable::stackTrace_offset; | |
2137 int java_lang_reflect_AccessibleObject::override_offset; | |
2138 int java_lang_reflect_Method::clazz_offset; | |
2139 int java_lang_reflect_Method::name_offset; | |
2140 int java_lang_reflect_Method::returnType_offset; | |
2141 int java_lang_reflect_Method::parameterTypes_offset; | |
2142 int java_lang_reflect_Method::exceptionTypes_offset; | |
2143 int java_lang_reflect_Method::slot_offset; | |
2144 int java_lang_reflect_Method::modifiers_offset; | |
2145 int java_lang_reflect_Method::signature_offset; | |
2146 int java_lang_reflect_Method::annotations_offset; | |
2147 int java_lang_reflect_Method::parameter_annotations_offset; | |
2148 int java_lang_reflect_Method::annotation_default_offset; | |
2149 int java_lang_reflect_Constructor::clazz_offset; | |
2150 int java_lang_reflect_Constructor::parameterTypes_offset; | |
2151 int java_lang_reflect_Constructor::exceptionTypes_offset; | |
2152 int java_lang_reflect_Constructor::slot_offset; | |
2153 int java_lang_reflect_Constructor::modifiers_offset; | |
2154 int java_lang_reflect_Constructor::signature_offset; | |
2155 int java_lang_reflect_Constructor::annotations_offset; | |
2156 int java_lang_reflect_Constructor::parameter_annotations_offset; | |
2157 int java_lang_reflect_Field::clazz_offset; | |
2158 int java_lang_reflect_Field::name_offset; | |
2159 int java_lang_reflect_Field::type_offset; | |
2160 int java_lang_reflect_Field::slot_offset; | |
2161 int java_lang_reflect_Field::modifiers_offset; | |
2162 int java_lang_reflect_Field::signature_offset; | |
2163 int java_lang_reflect_Field::annotations_offset; | |
2164 int java_lang_boxing_object::value_offset; | |
2165 int java_lang_ref_Reference::referent_offset; | |
2166 int java_lang_ref_Reference::queue_offset; | |
2167 int java_lang_ref_Reference::next_offset; | |
2168 int java_lang_ref_Reference::discovered_offset; | |
2169 int java_lang_ref_Reference::static_lock_offset; | |
2170 int java_lang_ref_Reference::static_pending_offset; | |
2171 int java_lang_ref_Reference::number_of_fake_oop_fields; | |
2172 int java_lang_ref_SoftReference::timestamp_offset; | |
2173 int java_lang_ref_SoftReference::static_clock_offset; | |
2174 int java_lang_ClassLoader::parent_offset; | |
2175 int java_lang_System::offset_of_static_fields; | |
2176 int java_lang_System::static_in_offset; | |
2177 int java_lang_System::static_out_offset; | |
2178 int java_lang_System::static_err_offset; | |
2179 int java_lang_StackTraceElement::declaringClass_offset; | |
2180 int java_lang_StackTraceElement::methodName_offset; | |
2181 int java_lang_StackTraceElement::fileName_offset; | |
2182 int java_lang_StackTraceElement::lineNumber_offset; | |
2183 int java_lang_AssertionStatusDirectives::classes_offset; | |
2184 int java_lang_AssertionStatusDirectives::classEnabled_offset; | |
2185 int java_lang_AssertionStatusDirectives::packages_offset; | |
2186 int java_lang_AssertionStatusDirectives::packageEnabled_offset; | |
2187 int java_lang_AssertionStatusDirectives::deflt_offset; | |
2188 int java_nio_Buffer::_limit_offset; | |
2189 int sun_misc_AtomicLongCSImpl::_value_offset; | |
2190 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0; | |
2191 int sun_reflect_ConstantPool::_cp_oop_offset; | |
2192 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset; | |
2193 | |
2194 | |
2195 // Support for java_lang_StackTraceElement | |
2196 | |
2197 void java_lang_StackTraceElement::set_fileName(oop element, oop value) { | |
2198 element->obj_field_put(fileName_offset, value); | |
2199 } | |
2200 | |
2201 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) { | |
2202 element->obj_field_put(declaringClass_offset, value); | |
2203 } | |
2204 | |
2205 void java_lang_StackTraceElement::set_methodName(oop element, oop value) { | |
2206 element->obj_field_put(methodName_offset, value); | |
2207 } | |
2208 | |
2209 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) { | |
2210 element->int_field_put(lineNumber_offset, value); | |
2211 } | |
2212 | |
2213 | |
2214 // Support for java Assertions - java_lang_AssertionStatusDirectives. | |
2215 | |
2216 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) { | |
2217 o->obj_field_put(classes_offset, val); | |
2218 } | |
2219 | |
2220 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) { | |
2221 o->obj_field_put(classEnabled_offset, val); | |
2222 } | |
2223 | |
2224 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) { | |
2225 o->obj_field_put(packages_offset, val); | |
2226 } | |
2227 | |
2228 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) { | |
2229 o->obj_field_put(packageEnabled_offset, val); | |
2230 } | |
2231 | |
2232 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) { | |
2233 o->bool_field_put(deflt_offset, val); | |
2234 } | |
2235 | |
2236 | |
2237 // Support for intrinsification of java.nio.Buffer.checkIndex | |
2238 int java_nio_Buffer::limit_offset() { | |
2239 return _limit_offset; | |
2240 } | |
2241 | |
2242 | |
2243 void java_nio_Buffer::compute_offsets() { | |
2244 klassOop k = SystemDictionary::java_nio_Buffer_klass(); | |
2245 COMPUTE_OFFSET("java.nio.Buffer", _limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature()); | |
2246 } | |
2247 | |
2248 // Support for intrinsification of sun.misc.AtomicLongCSImpl.attemptUpdate | |
2249 int sun_misc_AtomicLongCSImpl::value_offset() { | |
2250 assert(SystemDictionary::sun_misc_AtomicLongCSImpl_klass() != NULL, "can't call this"); | |
2251 return _value_offset; | |
2252 } | |
2253 | |
2254 | |
2255 void sun_misc_AtomicLongCSImpl::compute_offsets() { | |
2256 klassOop k = SystemDictionary::sun_misc_AtomicLongCSImpl_klass(); | |
2257 // If this class is not present, its value field offset won't be referenced. | |
2258 if (k != NULL) { | |
2259 COMPUTE_OFFSET("sun.misc.AtomicLongCSImpl", _value_offset, k, vmSymbols::value_name(), vmSymbols::long_signature()); | |
2260 } | |
2261 } | |
2262 | |
2263 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) { | |
2264 if (_owner_offset != 0) return; | |
2265 | |
2266 assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later"); | |
2267 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK); | |
2268 klassOop k = SystemDictionary::abstract_ownable_synchronizer_klass(); | |
2269 COMPUTE_OFFSET("java.util.concurrent.locks.AbstractOwnableSynchronizer", _owner_offset, k, | |
2270 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature()); | |
2271 } | |
2272 | |
2273 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) { | |
2274 assert(_owner_offset != 0, "Must be initialized"); | |
2275 return obj->obj_field(_owner_offset); | |
2276 } | |
2277 | |
2278 // Compute hard-coded offsets | |
2279 // Invoked before SystemDictionary::initialize, so pre-loaded classes | |
2280 // are not available to determine the offset_of_static_fields. | |
2281 void JavaClasses::compute_hard_coded_offsets() { | |
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2282 const int x = heapOopSize; |
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2283 // Objects don't get allocated in the gap in the header with compressed oops |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
98
diff
changeset
|
2284 // for these special classes because hard coded offsets can't be conditional |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
98
diff
changeset
|
2285 // so base_offset_in_bytes() is wrong here, allocate after the header. |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
98
diff
changeset
|
2286 const int header = sizeof(instanceOopDesc); |
0 | 2287 |
2288 // Do the String Class | |
2289 java_lang_String::value_offset = java_lang_String::hc_value_offset * x + header; | |
2290 java_lang_String::offset_offset = java_lang_String::hc_offset_offset * x + header; | |
2291 java_lang_String::count_offset = java_lang_String::offset_offset + sizeof (jint); | |
2292 java_lang_String::hash_offset = java_lang_String::count_offset + sizeof (jint); | |
2293 | |
2294 // Do the Class Class | |
2295 java_lang_Class::klass_offset = java_lang_Class::hc_klass_offset * x + header; | |
2296 java_lang_Class::array_klass_offset = java_lang_Class::hc_array_klass_offset * x + header; | |
2297 java_lang_Class::resolved_constructor_offset = java_lang_Class::hc_resolved_constructor_offset * x + header; | |
2298 | |
2299 // This is NOT an offset | |
2300 java_lang_Class::number_of_fake_oop_fields = java_lang_Class::hc_number_of_fake_oop_fields; | |
2301 | |
2302 // Throwable Class | |
2303 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header; | |
2304 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header; | |
2305 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header; | |
2306 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header; | |
2307 | |
2308 // java_lang_boxing_object | |
2309 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset * x + header; | |
2310 | |
2311 // java_lang_ref_Reference: | |
2312 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header; | |
2313 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header; | |
2314 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header; | |
2315 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header; | |
2316 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x; | |
2317 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x; | |
2318 // Artificial fields for java_lang_ref_Reference | |
2319 // The first field is for the discovered field added in 1.4 | |
2320 java_lang_ref_Reference::number_of_fake_oop_fields = 1; | |
2321 | |
2322 // java_lang_ref_SoftReference Class | |
2323 java_lang_ref_SoftReference::timestamp_offset = java_lang_ref_SoftReference::hc_timestamp_offset * x + header; | |
2324 // Don't multiply static fields because they are always in wordSize units | |
2325 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x; | |
2326 | |
2327 // java_lang_ClassLoader | |
2328 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header; | |
2329 | |
2330 // java_lang_System | |
2331 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x; | |
2332 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x; | |
2333 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x; | |
2334 | |
2335 // java_lang_StackTraceElement | |
2336 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header; | |
2337 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header; | |
2338 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header; | |
2339 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header; | |
2340 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header; | |
2341 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header; | |
2342 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header; | |
2343 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header; | |
2344 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header; | |
2345 | |
2346 } | |
2347 | |
2348 | |
2349 // Compute non-hard-coded field offsets of all the classes in this file | |
2350 void JavaClasses::compute_offsets() { | |
2351 | |
2352 java_lang_Class::compute_offsets(); | |
2353 java_lang_System::compute_offsets(); | |
2354 java_lang_Thread::compute_offsets(); | |
2355 java_lang_ThreadGroup::compute_offsets(); | |
2356 java_security_AccessControlContext::compute_offsets(); | |
2357 // Initialize reflection classes. The layouts of these classes | |
2358 // changed with the new reflection implementation in JDK 1.4, and | |
2359 // since the Universe doesn't know what JDK version it is until this | |
2360 // point we defer computation of these offsets until now. | |
2361 java_lang_reflect_AccessibleObject::compute_offsets(); | |
2362 java_lang_reflect_Method::compute_offsets(); | |
2363 java_lang_reflect_Constructor::compute_offsets(); | |
2364 java_lang_reflect_Field::compute_offsets(); | |
2365 if (JDK_Version::is_gte_jdk14x_version()) { | |
2366 java_nio_Buffer::compute_offsets(); | |
2367 } | |
2368 if (JDK_Version::is_gte_jdk15x_version()) { | |
2369 sun_reflect_ConstantPool::compute_offsets(); | |
2370 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets(); | |
2371 } | |
2372 sun_misc_AtomicLongCSImpl::compute_offsets(); | |
2373 } | |
2374 | |
2375 #ifndef PRODUCT | |
2376 | |
2377 // These functions exist to assert the validity of hard-coded field offsets to guard | |
2378 // against changes in the class files | |
2379 | |
2380 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) { | |
2381 EXCEPTION_MARK; | |
2382 fieldDescriptor fd; | |
2383 symbolHandle klass_sym = oopFactory::new_symbol_handle(klass_name, CATCH); | |
2384 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); | |
2385 instanceKlassHandle h_klass (THREAD, k); | |
2386 //instanceKlassHandle h_klass(klass); | |
2387 symbolHandle f_name = oopFactory::new_symbol_handle(field_name, CATCH); | |
2388 symbolHandle f_sig = oopFactory::new_symbol_handle(field_sig, CATCH); | |
2389 if (!h_klass->find_local_field(f_name(), f_sig(), &fd)) { | |
2390 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name); | |
2391 return false; | |
2392 } | |
2393 if (fd.is_static()) { | |
2394 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name); | |
2395 return false; | |
2396 } | |
2397 if (fd.offset() == hardcoded_offset ) { | |
2398 return true; | |
2399 } else { | |
2400 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.", | |
2401 klass_name, field_name, hardcoded_offset, fd.offset()); | |
2402 return false; | |
2403 } | |
2404 } | |
2405 | |
2406 | |
2407 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) { | |
2408 EXCEPTION_MARK; | |
2409 fieldDescriptor fd; | |
2410 symbolHandle klass_sym = oopFactory::new_symbol_handle(klass_name, CATCH); | |
2411 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); | |
2412 instanceKlassHandle h_klass (THREAD, k); | |
2413 symbolHandle f_name = oopFactory::new_symbol_handle(field_name, CATCH); | |
2414 symbolHandle f_sig = oopFactory::new_symbol_handle(field_sig, CATCH); | |
2415 if (!h_klass->find_local_field(f_name(), f_sig(), &fd)) { | |
2416 tty->print_cr("Static field %s.%s not found", klass_name, field_name); | |
2417 return false; | |
2418 } | |
2419 if (!fd.is_static()) { | |
2420 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name); | |
2421 return false; | |
2422 } | |
2423 if (fd.offset() == hardcoded_offset + h_klass->offset_of_static_fields()) { | |
2424 return true; | |
2425 } else { | |
2426 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()); | |
2427 return false; | |
2428 } | |
2429 } | |
2430 | |
2431 | |
2432 // Check the hard-coded field offsets of all the classes in this file | |
2433 | |
2434 void JavaClasses::check_offsets() { | |
2435 bool valid = true; | |
2436 | |
2437 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ | |
2438 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig) | |
2439 | |
2440 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ | |
2441 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig) | |
2442 | |
2443 // java.lang.String | |
2444 | |
2445 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C"); | |
2446 CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I"); | |
2447 CHECK_OFFSET("java/lang/String", java_lang_String, count, "I"); | |
2448 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I"); | |
2449 | |
2450 // java.lang.Class | |
2451 | |
2452 // Fake fields | |
2453 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked | |
2454 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked | |
2455 // CHECK_OFFSET("java/lang/Class", java_lang_Class, resolved_constructor); // %%% this needs to be checked | |
2456 | |
2457 // java.lang.Throwable | |
2458 | |
2459 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;"); | |
2460 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;"); | |
2461 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;"); | |
2462 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;"); | |
2463 | |
2464 // Boxed primitive objects (java_lang_boxing_object) | |
2465 | |
2466 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z"); | |
2467 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C"); | |
2468 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F"); | |
2469 CHECK_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D"); | |
2470 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B"); | |
2471 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S"); | |
2472 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I"); | |
2473 CHECK_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J"); | |
2474 | |
2475 // java.lang.ClassLoader | |
2476 | |
2477 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;"); | |
2478 | |
2479 // java.lang.System | |
2480 | |
2481 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;"); | |
2482 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;"); | |
2483 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;"); | |
2484 | |
2485 // java.lang.StackTraceElement | |
2486 | |
2487 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;"); | |
2488 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;"); | |
2489 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;"); | |
2490 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I"); | |
2491 | |
2492 // java.lang.ref.Reference | |
2493 | |
2494 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;"); | |
2495 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;"); | |
2496 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;"); | |
2497 // Fake field | |
2498 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;"); | |
2499 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;"); | |
2500 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;"); | |
2501 | |
2502 // java.lang.ref.SoftReference | |
2503 | |
2504 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J"); | |
2505 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J"); | |
2506 | |
2507 // java.lang.AssertionStatusDirectives | |
2508 // | |
2509 // The CheckAssertionStatusDirectives boolean can be removed from here and | |
2510 // globals.hpp after the AssertionStatusDirectives class has been integrated | |
2511 // into merlin "for some time." Without it, the vm will fail with early | |
2512 // merlin builds. | |
2513 | |
2514 if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) { | |
2515 const char* nm = "java/lang/AssertionStatusDirectives"; | |
2516 const char* sig = "[Ljava/lang/String;"; | |
2517 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig); | |
2518 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z"); | |
2519 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig); | |
2520 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z"); | |
2521 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z"); | |
2522 } | |
2523 | |
2524 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed"); | |
2525 } | |
2526 | |
2527 #endif // PRODUCT | |
2528 | |
2529 void javaClasses_init() { | |
2530 JavaClasses::compute_offsets(); | |
2531 JavaClasses::check_offsets(); | |
2532 FilteredFieldsMap::initialize(); // must be done after computing offsets. | |
2533 } |