Mercurial > hg > truffle
annotate src/share/vm/classfile/javaClasses.cpp @ 98:deb97b8ef02b
6679708: No_Safepoint_Verifier and BacktraceBuilder have uninitialized fields
Summary: fix or remove uninitialized fields
Reviewed-by: kvn, rasbold
| author | never |
|---|---|
| date | Wed, 26 Mar 2008 12:25:06 -0700 |
| parents | 90f5ddc7297b |
| children | ba764ed4b6f2 |
| 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"); | |
|
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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 | |
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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) { | |
| 523 return (JavaThread*) java_thread->obj_field(_eetop_offset); | |
| 524 } | |
| 525 | |
| 526 | |
| 527 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) { | |
| 528 // We are storing a JavaThread* (malloc'ed data) into a long field in the thread | |
| 529 // object. The store has to be 64-bit wide so we use a pointer store, but we | |
| 530 // cannot call oopDesc::obj_field_put since it includes a write barrier! | |
| 531 oop* addr = java_thread->obj_field_addr(_eetop_offset); | |
| 532 *addr = (oop) thread; | |
| 533 } | |
| 534 | |
| 535 | |
| 536 typeArrayOop java_lang_Thread::name(oop java_thread) { | |
| 537 oop name = java_thread->obj_field(_name_offset); | |
| 538 assert(name == NULL || (name->is_typeArray() && typeArrayKlass::cast(name->klass())->element_type() == T_CHAR), "just checking"); | |
| 539 return typeArrayOop(name); | |
| 540 } | |
| 541 | |
| 542 | |
| 543 void java_lang_Thread::set_name(oop java_thread, typeArrayOop name) { | |
| 544 assert(java_thread->obj_field(_name_offset) == NULL, "name should be NULL"); | |
| 545 java_thread->obj_field_put(_name_offset, name); | |
| 546 } | |
| 547 | |
| 548 | |
| 549 ThreadPriority java_lang_Thread::priority(oop java_thread) { | |
| 550 return (ThreadPriority)java_thread->int_field(_priority_offset); | |
| 551 } | |
| 552 | |
| 553 | |
| 554 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) { | |
| 555 java_thread->int_field_put(_priority_offset, priority); | |
| 556 } | |
| 557 | |
| 558 | |
| 559 oop java_lang_Thread::threadGroup(oop java_thread) { | |
| 560 return java_thread->obj_field(_group_offset); | |
| 561 } | |
| 562 | |
| 563 | |
| 564 bool java_lang_Thread::is_stillborn(oop java_thread) { | |
| 565 return java_thread->bool_field(_stillborn_offset) != 0; | |
| 566 } | |
| 567 | |
| 568 | |
| 569 // We never have reason to turn the stillborn bit off | |
| 570 void java_lang_Thread::set_stillborn(oop java_thread) { | |
| 571 java_thread->bool_field_put(_stillborn_offset, true); | |
| 572 } | |
| 573 | |
| 574 | |
| 575 bool java_lang_Thread::is_alive(oop java_thread) { | |
| 576 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 577 return (thr != NULL); | |
| 578 } | |
| 579 | |
| 580 | |
| 581 bool java_lang_Thread::is_daemon(oop java_thread) { | |
| 582 return java_thread->bool_field(_daemon_offset) != 0; | |
| 583 } | |
| 584 | |
| 585 | |
| 586 void java_lang_Thread::set_daemon(oop java_thread) { | |
| 587 java_thread->bool_field_put(_daemon_offset, true); | |
| 588 } | |
| 589 | |
| 590 oop java_lang_Thread::context_class_loader(oop java_thread) { | |
| 591 return java_thread->obj_field(_contextClassLoader_offset); | |
| 592 } | |
| 593 | |
| 594 oop java_lang_Thread::inherited_access_control_context(oop java_thread) { | |
| 595 return java_thread->obj_field(_inheritedAccessControlContext_offset); | |
| 596 } | |
| 597 | |
| 598 | |
| 599 jlong java_lang_Thread::stackSize(oop java_thread) { | |
| 600 // The stackSize field is only present starting in 1.4 | |
| 601 if (_stackSize_offset > 0) { | |
| 602 assert(JDK_Version::is_gte_jdk14x_version(), "sanity check"); | |
| 603 return java_thread->long_field(_stackSize_offset); | |
| 604 } else { | |
| 605 return 0; | |
| 606 } | |
| 607 } | |
| 608 | |
| 609 // Write the thread status value to threadStatus field in java.lang.Thread java class. | |
| 610 void java_lang_Thread::set_thread_status(oop java_thread, | |
| 611 java_lang_Thread::ThreadStatus status) { | |
| 612 assert(JavaThread::current()->thread_state() == _thread_in_vm, "Java Thread is not running in vm"); | |
| 613 // The threadStatus is only present starting in 1.5 | |
| 614 if (_thread_status_offset > 0) { | |
| 615 java_thread->int_field_put(_thread_status_offset, status); | |
| 616 } | |
| 617 } | |
| 618 | |
| 619 // Read thread status value from threadStatus field in java.lang.Thread java class. | |
| 620 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) { | |
| 621 assert(Thread::current()->is_VM_thread() || | |
| 622 JavaThread::current()->thread_state() == _thread_in_vm, | |
| 623 "Java Thread is not running in vm"); | |
| 624 // The threadStatus is only present starting in 1.5 | |
| 625 if (_thread_status_offset > 0) { | |
| 626 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset); | |
| 627 } else { | |
| 628 // All we can easily figure out is if it is alive, but that is | |
| 629 // enough info for a valid unknown status. | |
| 630 // These aren't restricted to valid set ThreadStatus values, so | |
| 631 // use JVMTI values and cast. | |
| 632 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 633 if (thr == NULL) { | |
| 634 // the thread hasn't run yet or is in the process of exiting | |
| 635 return NEW; | |
| 636 } | |
| 637 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE; | |
| 638 } | |
| 639 } | |
| 640 | |
| 641 | |
| 642 jlong java_lang_Thread::thread_id(oop java_thread) { | |
| 643 // The thread ID field is only present starting in 1.5 | |
| 644 if (_tid_offset > 0) { | |
| 645 return java_thread->long_field(_tid_offset); | |
| 646 } else { | |
| 647 return 0; | |
| 648 } | |
| 649 } | |
| 650 | |
| 651 oop java_lang_Thread::park_blocker(oop java_thread) { | |
| 652 assert(JDK_Version::supports_thread_park_blocker() && _park_blocker_offset != 0, | |
| 653 "Must support parkBlocker field"); | |
| 654 | |
| 655 if (_park_blocker_offset > 0) { | |
| 656 return java_thread->obj_field(_park_blocker_offset); | |
| 657 } | |
| 658 | |
| 659 return NULL; | |
| 660 } | |
| 661 | |
| 662 jlong java_lang_Thread::park_event(oop java_thread) { | |
| 663 if (_park_event_offset > 0) { | |
| 664 return java_thread->long_field(_park_event_offset); | |
| 665 } | |
| 666 return 0; | |
| 667 } | |
| 668 | |
| 669 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) { | |
| 670 if (_park_event_offset > 0) { | |
| 671 java_thread->long_field_put(_park_event_offset, ptr); | |
| 672 return true; | |
| 673 } | |
| 674 return false; | |
| 675 } | |
| 676 | |
| 677 | |
| 678 const char* java_lang_Thread::thread_status_name(oop java_thread) { | |
| 679 assert(JDK_Version::is_gte_jdk15x_version() && _thread_status_offset != 0, "Must have thread status"); | |
| 680 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset); | |
| 681 switch (status) { | |
| 682 case NEW : return "NEW"; | |
| 683 case RUNNABLE : return "RUNNABLE"; | |
| 684 case SLEEPING : return "TIMED_WAITING (sleeping)"; | |
| 685 case IN_OBJECT_WAIT : return "WAITING (on object monitor)"; | |
| 686 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)"; | |
| 687 case PARKED : return "WAITING (parking)"; | |
| 688 case PARKED_TIMED : return "TIMED_WAITING (parking)"; | |
| 689 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)"; | |
| 690 case TERMINATED : return "TERMINATED"; | |
| 691 default : return "UNKNOWN"; | |
| 692 }; | |
| 693 } | |
| 694 int java_lang_ThreadGroup::_parent_offset = 0; | |
| 695 int java_lang_ThreadGroup::_name_offset = 0; | |
| 696 int java_lang_ThreadGroup::_threads_offset = 0; | |
| 697 int java_lang_ThreadGroup::_groups_offset = 0; | |
| 698 int java_lang_ThreadGroup::_maxPriority_offset = 0; | |
| 699 int java_lang_ThreadGroup::_destroyed_offset = 0; | |
| 700 int java_lang_ThreadGroup::_daemon_offset = 0; | |
| 701 int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0; | |
| 702 int java_lang_ThreadGroup::_nthreads_offset = 0; | |
| 703 int java_lang_ThreadGroup::_ngroups_offset = 0; | |
| 704 | |
| 705 oop java_lang_ThreadGroup::parent(oop java_thread_group) { | |
| 706 assert(java_thread_group->is_oop(), "thread group must be oop"); | |
| 707 return java_thread_group->obj_field(_parent_offset); | |
| 708 } | |
| 709 | |
| 710 // ("name as oop" accessor is not necessary) | |
| 711 | |
| 712 typeArrayOop java_lang_ThreadGroup::name(oop java_thread_group) { | |
| 713 oop name = java_thread_group->obj_field(_name_offset); | |
| 714 // ThreadGroup.name can be null | |
| 715 return name == NULL ? (typeArrayOop)NULL : java_lang_String::value(name); | |
| 716 } | |
| 717 | |
| 718 int java_lang_ThreadGroup::nthreads(oop java_thread_group) { | |
| 719 assert(java_thread_group->is_oop(), "thread group must be oop"); | |
| 720 return java_thread_group->int_field(_nthreads_offset); | |
| 721 } | |
| 722 | |
| 723 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) { | |
| 724 oop threads = java_thread_group->obj_field(_threads_offset); | |
| 725 assert(threads != NULL, "threadgroups should have threads"); | |
| 726 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code | |
| 727 return objArrayOop(threads); | |
| 728 } | |
| 729 | |
| 730 int java_lang_ThreadGroup::ngroups(oop java_thread_group) { | |
| 731 assert(java_thread_group->is_oop(), "thread group must be oop"); | |
| 732 return java_thread_group->int_field(_ngroups_offset); | |
| 733 } | |
| 734 | |
| 735 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) { | |
| 736 oop groups = java_thread_group->obj_field(_groups_offset); | |
| 737 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code | |
| 738 return objArrayOop(groups); | |
| 739 } | |
| 740 | |
| 741 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) { | |
| 742 assert(java_thread_group->is_oop(), "thread group must be oop"); | |
| 743 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset); | |
| 744 } | |
| 745 | |
| 746 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) { | |
| 747 assert(java_thread_group->is_oop(), "thread group must be oop"); | |
| 748 return java_thread_group->bool_field(_destroyed_offset) != 0; | |
| 749 } | |
| 750 | |
| 751 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) { | |
| 752 assert(java_thread_group->is_oop(), "thread group must be oop"); | |
| 753 return java_thread_group->bool_field(_daemon_offset) != 0; | |
| 754 } | |
| 755 | |
| 756 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) { | |
| 757 assert(java_thread_group->is_oop(), "thread group must be oop"); | |
| 758 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0; | |
| 759 } | |
| 760 | |
| 761 void java_lang_ThreadGroup::compute_offsets() { | |
| 762 assert(_parent_offset == 0, "offsets should be initialized only once"); | |
| 763 | |
| 764 klassOop k = SystemDictionary::threadGroup_klass(); | |
| 765 | |
| 766 COMPUTE_OFFSET("java.lang.ThreadGroup", _parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature()); | |
| 767 COMPUTE_OFFSET("java.lang.ThreadGroup", _name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); | |
| 768 COMPUTE_OFFSET("java.lang.ThreadGroup", _threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature()); | |
| 769 COMPUTE_OFFSET("java.lang.ThreadGroup", _groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature()); | |
| 770 COMPUTE_OFFSET("java.lang.ThreadGroup", _maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature()); | |
| 771 COMPUTE_OFFSET("java.lang.ThreadGroup", _destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature()); | |
| 772 COMPUTE_OFFSET("java.lang.ThreadGroup", _daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature()); | |
| 773 COMPUTE_OFFSET("java.lang.ThreadGroup", _vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature()); | |
| 774 COMPUTE_OFFSET("java.lang.ThreadGroup", _nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature()); | |
| 775 COMPUTE_OFFSET("java.lang.ThreadGroup", _ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature()); | |
| 776 } | |
| 777 | |
| 778 oop java_lang_Throwable::backtrace(oop throwable) { | |
| 779 return throwable->obj_field_acquire(backtrace_offset); | |
| 780 } | |
| 781 | |
| 782 | |
| 783 void java_lang_Throwable::set_backtrace(oop throwable, oop value) { | |
| 784 throwable->release_obj_field_put(backtrace_offset, value); | |
| 785 } | |
| 786 | |
| 787 | |
| 788 oop java_lang_Throwable::message(oop throwable) { | |
| 789 return throwable->obj_field(detailMessage_offset); | |
| 790 } | |
| 791 | |
| 792 | |
| 793 oop java_lang_Throwable::message(Handle throwable) { | |
| 794 return throwable->obj_field(detailMessage_offset); | |
| 795 } | |
| 796 | |
| 797 | |
| 798 void java_lang_Throwable::set_message(oop throwable, oop value) { | |
| 799 throwable->obj_field_put(detailMessage_offset, value); | |
| 800 } | |
| 801 | |
| 802 | |
| 803 void java_lang_Throwable::clear_stacktrace(oop throwable) { | |
| 804 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4"); | |
| 805 throwable->obj_field_put(stackTrace_offset, NULL); | |
| 806 } | |
| 807 | |
| 808 | |
| 809 void java_lang_Throwable::print(oop throwable, outputStream* st) { | |
| 810 ResourceMark rm; | |
| 811 klassOop k = throwable->klass(); | |
| 812 assert(k != NULL, "just checking"); | |
| 813 st->print("%s", instanceKlass::cast(k)->external_name()); | |
| 814 oop msg = message(throwable); | |
| 815 if (msg != NULL) { | |
| 816 st->print(": %s", java_lang_String::as_utf8_string(msg)); | |
| 817 } | |
| 818 } | |
| 819 | |
| 820 | |
| 821 void java_lang_Throwable::print(Handle throwable, outputStream* st) { | |
| 822 ResourceMark rm; | |
| 823 klassOop k = throwable->klass(); | |
| 824 assert(k != NULL, "just checking"); | |
| 825 st->print("%s", instanceKlass::cast(k)->external_name()); | |
| 826 oop msg = message(throwable); | |
| 827 if (msg != NULL) { | |
| 828 st->print(": %s", java_lang_String::as_utf8_string(msg)); | |
| 829 } | |
| 830 } | |
| 831 | |
| 832 // Print stack trace element to resource allocated buffer | |
| 833 char* java_lang_Throwable::print_stack_element_to_buffer(methodOop method, int bci) { | |
| 834 // Get strings and string lengths | |
| 835 instanceKlass* klass = instanceKlass::cast(method->method_holder()); | |
| 836 const char* klass_name = klass->external_name(); | |
| 837 int buf_len = (int)strlen(klass_name); | |
| 838 char* source_file_name; | |
| 839 if (klass->source_file_name() == NULL) { | |
| 840 source_file_name = NULL; | |
| 841 } else { | |
| 842 source_file_name = klass->source_file_name()->as_C_string(); | |
| 843 buf_len += (int)strlen(source_file_name); | |
| 844 } | |
| 845 char* method_name = method->name()->as_C_string(); | |
| 846 buf_len += (int)strlen(method_name); | |
| 847 | |
| 848 // Allocate temporary buffer with extra space for formatting and line number | |
| 849 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64); | |
| 850 | |
| 851 // Print stack trace line in buffer | |
| 852 sprintf(buf, "\tat %s.%s", klass_name, method_name); | |
| 853 if (method->is_native()) { | |
| 854 strcat(buf, "(Native Method)"); | |
| 855 } else { | |
| 856 int line_number = method->line_number_from_bci(bci); | |
| 857 if (source_file_name != NULL && (line_number != -1)) { | |
| 858 // Sourcename and linenumber | |
| 859 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number); | |
| 860 } else if (source_file_name != NULL) { | |
| 861 // Just sourcename | |
| 862 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name); | |
| 863 } else { | |
| 864 // Neither soucename and linenumber | |
| 865 sprintf(buf + (int)strlen(buf), "(Unknown Source)"); | |
| 866 } | |
| 867 nmethod* nm = method->code(); | |
| 868 if (WizardMode && nm != NULL) { | |
| 869 sprintf(buf + (int)strlen(buf), "(nmethod %#x)", nm); | |
| 870 } | |
| 871 } | |
| 872 | |
| 873 return buf; | |
| 874 } | |
| 875 | |
| 876 | |
| 877 void java_lang_Throwable::print_stack_element(Handle stream, methodOop method, int bci) { | |
| 878 ResourceMark rm; | |
| 879 char* buf = print_stack_element_to_buffer(method, bci); | |
| 880 print_to_stream(stream, buf); | |
| 881 } | |
| 882 | |
| 883 void java_lang_Throwable::print_stack_element(outputStream *st, methodOop method, int bci) { | |
| 884 ResourceMark rm; | |
| 885 char* buf = print_stack_element_to_buffer(method, bci); | |
| 886 st->print_cr("%s", buf); | |
| 887 } | |
| 888 | |
| 889 void java_lang_Throwable::print_to_stream(Handle stream, const char* str) { | |
| 890 if (stream.is_null()) { | |
| 891 tty->print_cr("%s", str); | |
| 892 } else { | |
| 893 EXCEPTION_MARK; | |
| 894 JavaValue result(T_VOID); | |
| 895 Handle arg (THREAD, oopFactory::new_charArray(str, THREAD)); | |
| 896 if (!HAS_PENDING_EXCEPTION) { | |
| 897 JavaCalls::call_virtual(&result, | |
| 898 stream, | |
| 899 KlassHandle(THREAD, stream->klass()), | |
| 900 vmSymbolHandles::println_name(), | |
| 901 vmSymbolHandles::char_array_void_signature(), | |
| 902 arg, | |
| 903 THREAD); | |
| 904 } | |
| 905 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM. | |
| 906 if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION; | |
| 907 } | |
| 908 | |
| 909 } | |
| 910 | |
| 911 | |
| 912 const char* java_lang_Throwable::no_stack_trace_message() { | |
| 913 return "\t<<no stack trace available>>"; | |
| 914 } | |
| 915 | |
| 916 | |
| 917 // Currently used only for exceptions occurring during startup | |
| 918 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) { | |
| 919 Thread *THREAD = Thread::current(); | |
| 920 Handle h_throwable(THREAD, throwable); | |
| 921 while (h_throwable.not_null()) { | |
| 922 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable()))); | |
| 923 if (result.is_null()) { | |
| 924 st->print_cr(no_stack_trace_message()); | |
| 925 return; | |
| 926 } | |
| 927 | |
| 928 while (result.not_null()) { | |
| 929 objArrayHandle methods (THREAD, | |
| 930 objArrayOop(result->obj_at(trace_methods_offset))); | |
| 931 typeArrayHandle bcis (THREAD, | |
| 932 typeArrayOop(result->obj_at(trace_bcis_offset))); | |
| 933 | |
| 934 if (methods.is_null() || bcis.is_null()) { | |
| 935 st->print_cr(no_stack_trace_message()); | |
| 936 return; | |
| 937 } | |
| 938 | |
| 939 int length = methods()->length(); | |
| 940 for (int index = 0; index < length; index++) { | |
| 941 methodOop method = methodOop(methods()->obj_at(index)); | |
| 942 if (method == NULL) goto handle_cause; | |
| 943 int bci = bcis->ushort_at(index); | |
| 944 print_stack_element(st, method, bci); | |
| 945 } | |
| 946 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset))); | |
| 947 } | |
| 948 handle_cause: | |
| 949 { | |
| 950 EXCEPTION_MARK; | |
| 951 JavaValue result(T_OBJECT); | |
| 952 JavaCalls::call_virtual(&result, | |
| 953 h_throwable, | |
| 954 KlassHandle(THREAD, h_throwable->klass()), | |
| 955 vmSymbolHandles::getCause_name(), | |
| 956 vmSymbolHandles::void_throwable_signature(), | |
| 957 THREAD); | |
| 958 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM. | |
| 959 if (HAS_PENDING_EXCEPTION) { | |
| 960 CLEAR_PENDING_EXCEPTION; | |
| 961 h_throwable = Handle(); | |
| 962 } else { | |
| 963 h_throwable = Handle(THREAD, (oop) result.get_jobject()); | |
| 964 if (h_throwable.not_null()) { | |
| 965 st->print("Caused by: "); | |
| 966 print(h_throwable, st); | |
| 967 st->cr(); | |
| 968 } | |
| 969 } | |
| 970 } | |
| 971 } | |
| 972 } | |
| 973 | |
| 974 | |
| 975 void java_lang_Throwable::print_stack_trace(oop throwable, oop print_stream) { | |
| 976 // Note: this is no longer used in Merlin, but we support it for compatibility. | |
| 977 Thread *thread = Thread::current(); | |
| 978 Handle stream(thread, print_stream); | |
| 979 objArrayHandle result (thread, objArrayOop(backtrace(throwable))); | |
| 980 if (result.is_null()) { | |
| 981 print_to_stream(stream, no_stack_trace_message()); | |
| 982 return; | |
| 983 } | |
| 984 | |
| 985 while (result.not_null()) { | |
| 986 objArrayHandle methods (thread, | |
| 987 objArrayOop(result->obj_at(trace_methods_offset))); | |
| 988 typeArrayHandle bcis (thread, | |
| 989 typeArrayOop(result->obj_at(trace_bcis_offset))); | |
| 990 | |
| 991 if (methods.is_null() || bcis.is_null()) { | |
| 992 print_to_stream(stream, no_stack_trace_message()); | |
| 993 return; | |
| 994 } | |
| 995 | |
| 996 int length = methods()->length(); | |
| 997 for (int index = 0; index < length; index++) { | |
| 998 methodOop method = methodOop(methods()->obj_at(index)); | |
| 999 if (method == NULL) return; | |
| 1000 int bci = bcis->ushort_at(index); | |
| 1001 print_stack_element(stream, method, bci); | |
| 1002 } | |
| 1003 result = objArrayHandle(thread, objArrayOop(result->obj_at(trace_next_offset))); | |
| 1004 } | |
| 1005 } | |
| 1006 | |
| 1007 // This class provides a simple wrapper over the internal structure of | |
| 1008 // exception backtrace to insulate users of the backtrace from needing | |
| 1009 // to know what it looks like. | |
| 1010 class BacktraceBuilder: public StackObj { | |
| 1011 private: | |
| 1012 Handle _backtrace; | |
| 1013 objArrayOop _head; | |
| 1014 objArrayOop _methods; | |
| 1015 typeArrayOop _bcis; | |
| 1016 int _index; | |
| 1017 bool _dirty; | |
| 1018 No_Safepoint_Verifier _nsv; | |
| 1019 | |
| 1020 public: | |
| 1021 | |
| 1022 enum { | |
| 1023 trace_methods_offset = java_lang_Throwable::trace_methods_offset, | |
| 1024 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset, | |
| 1025 trace_next_offset = java_lang_Throwable::trace_next_offset, | |
| 1026 trace_size = java_lang_Throwable::trace_size, | |
| 1027 trace_chunk_size = java_lang_Throwable::trace_chunk_size | |
| 1028 }; | |
| 1029 | |
| 1030 // constructor for new backtrace | |
|
98
deb97b8ef02b
6679708: No_Safepoint_Verifier and BacktraceBuilder have uninitialized fields
never
parents:
22
diff
changeset
|
1031 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _dirty(false) { |
| 0 | 1032 expand(CHECK); |
| 1033 _backtrace = _head; | |
| 1034 _index = 0; | |
| 1035 } | |
| 1036 | |
| 1037 void flush() { | |
| 1038 if (_dirty && _methods != NULL) { | |
| 1039 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 1040 assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt"); | |
| 1041 bs->write_ref_array(MemRegion((HeapWord*)_methods->obj_at_addr(0), | |
| 1042 _methods->length() * HeapWordsPerOop)); | |
| 1043 _dirty = false; | |
| 1044 } | |
| 1045 } | |
| 1046 | |
| 1047 void expand(TRAPS) { | |
| 1048 flush(); | |
| 1049 | |
| 1050 objArrayHandle old_head(THREAD, _head); | |
| 1051 Pause_No_Safepoint_Verifier pnsv(&_nsv); | |
| 1052 | |
| 1053 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK); | |
| 1054 objArrayHandle new_head(THREAD, head); | |
| 1055 | |
| 1056 objArrayOop methods = oopFactory::new_objectArray(trace_chunk_size, CHECK); | |
| 1057 objArrayHandle new_methods(THREAD, methods); | |
| 1058 | |
| 1059 typeArrayOop bcis = oopFactory::new_shortArray(trace_chunk_size, CHECK); | |
| 1060 typeArrayHandle new_bcis(THREAD, bcis); | |
| 1061 | |
| 1062 if (!old_head.is_null()) { | |
| 1063 old_head->obj_at_put(trace_next_offset, new_head()); | |
| 1064 } | |
| 1065 new_head->obj_at_put(trace_methods_offset, new_methods()); | |
| 1066 new_head->obj_at_put(trace_bcis_offset, new_bcis()); | |
| 1067 | |
| 1068 _head = new_head(); | |
| 1069 _methods = new_methods(); | |
| 1070 _bcis = new_bcis(); | |
| 1071 _index = 0; | |
| 1072 } | |
| 1073 | |
| 1074 oop backtrace() { | |
| 1075 flush(); | |
| 1076 return _backtrace(); | |
| 1077 } | |
| 1078 | |
| 1079 inline void push(methodOop method, short bci, TRAPS) { | |
| 1080 if (_index >= trace_chunk_size) { | |
| 1081 methodHandle mhandle(THREAD, method); | |
| 1082 expand(CHECK); | |
| 1083 method = mhandle(); | |
| 1084 } | |
| 1085 | |
| 1086 // _methods->obj_at_put(_index, method); | |
| 1087 *_methods->obj_at_addr(_index) = method; | |
| 1088 _bcis->ushort_at_put(_index, bci); | |
| 1089 _index++; | |
| 1090 _dirty = true; | |
| 1091 } | |
| 1092 | |
| 1093 methodOop current_method() { | |
| 1094 assert(_index >= 0 && _index < trace_chunk_size, "out of range"); | |
| 1095 return methodOop(_methods->obj_at(_index)); | |
| 1096 } | |
| 1097 | |
| 1098 jushort current_bci() { | |
| 1099 assert(_index >= 0 && _index < trace_chunk_size, "out of range"); | |
| 1100 return _bcis->ushort_at(_index); | |
| 1101 } | |
| 1102 }; | |
| 1103 | |
| 1104 | |
| 1105 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, TRAPS) { | |
| 1106 if (!StackTraceInThrowable) return; | |
| 1107 ResourceMark rm(THREAD); | |
| 1108 | |
| 1109 // Start out by clearing the backtrace for this object, in case the VM | |
| 1110 // runs out of memory while allocating the stack trace | |
| 1111 set_backtrace(throwable(), NULL); | |
| 1112 if (JDK_Version::is_gte_jdk14x_version()) { | |
| 1113 // New since 1.4, clear lazily constructed Java level stacktrace if | |
| 1114 // refilling occurs | |
| 1115 clear_stacktrace(throwable()); | |
| 1116 } | |
| 1117 | |
| 1118 int max_depth = MaxJavaStackTraceDepth; | |
| 1119 JavaThread* thread = (JavaThread*)THREAD; | |
| 1120 BacktraceBuilder bt(CHECK); | |
| 1121 | |
| 1122 // Instead of using vframe directly, this version of fill_in_stack_trace | |
| 1123 // basically handles everything by hand. This significantly improved the | |
| 1124 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows. | |
| 1125 // See bug 6333838 for more details. | |
| 1126 // The "ASSERT" here is to verify this method generates the exactly same stack | |
| 1127 // trace as utilizing vframe. | |
| 1128 #ifdef ASSERT | |
| 1129 vframeStream st(thread); | |
| 1130 methodHandle st_method(THREAD, st.method()); | |
| 1131 #endif | |
| 1132 int total_count = 0; | |
| 1133 RegisterMap map(thread, false); | |
| 1134 int decode_offset = 0; | |
| 1135 nmethod* nm = NULL; | |
| 1136 bool skip_fillInStackTrace_check = false; | |
| 1137 bool skip_throwableInit_check = false; | |
| 1138 | |
| 1139 for (frame fr = thread->last_frame(); max_depth != total_count;) { | |
| 1140 methodOop method = NULL; | |
| 1141 int bci = 0; | |
| 1142 | |
| 1143 // Compiled java method case. | |
| 1144 if (decode_offset != 0) { | |
| 1145 DebugInfoReadStream stream(nm, decode_offset); | |
| 1146 decode_offset = stream.read_int(); | |
| 1147 method = (methodOop)nm->oop_at(stream.read_int()); | |
| 1148 bci = stream.read_bci(); | |
| 1149 } else { | |
| 1150 if (fr.is_first_frame()) break; | |
| 1151 address pc = fr.pc(); | |
| 1152 if (fr.is_interpreted_frame()) { | |
| 1153 intptr_t bcx = fr.interpreter_frame_bcx(); | |
| 1154 method = fr.interpreter_frame_method(); | |
| 1155 bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx); | |
| 1156 fr = fr.sender(&map); | |
| 1157 } else { | |
| 1158 CodeBlob* cb = fr.cb(); | |
| 1159 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL | |
| 1160 // but non nmethod | |
| 1161 fr = fr.sender(&map); | |
| 1162 if (cb == NULL || !cb->is_nmethod()) { | |
| 1163 continue; | |
| 1164 } | |
| 1165 nm = (nmethod*)cb; | |
| 1166 if (nm->method()->is_native()) { | |
| 1167 method = nm->method(); | |
| 1168 bci = 0; | |
| 1169 } else { | |
| 1170 PcDesc* pd = nm->pc_desc_at(pc); | |
| 1171 decode_offset = pd->scope_decode_offset(); | |
| 1172 // if decode_offset is not equal to 0, it will execute the | |
| 1173 // "compiled java method case" at the beginning of the loop. | |
| 1174 continue; | |
| 1175 } | |
| 1176 } | |
| 1177 } | |
| 1178 #ifdef ASSERT | |
| 1179 assert(st_method() == method && st.bci() == bci, | |
| 1180 "Wrong stack trace"); | |
| 1181 st.next(); | |
| 1182 // vframeStream::method isn't GC-safe so store off a copy | |
| 1183 // of the methodOop in case we GC. | |
| 1184 if (!st.at_end()) { | |
| 1185 st_method = st.method(); | |
| 1186 } | |
| 1187 #endif | |
| 1188 if (!skip_fillInStackTrace_check) { | |
| 1189 // check "fillInStackTrace" only once, so we negate the flag | |
| 1190 // after the first time check. | |
| 1191 skip_fillInStackTrace_check = true; | |
| 1192 if (method->name() == vmSymbols::fillInStackTrace_name()) { | |
| 1193 continue; | |
| 1194 } | |
| 1195 } | |
| 1196 // skip <init> methods of the exceptions klass. If there is <init> methods | |
| 1197 // that belongs to a superclass of the exception we are going to skipping | |
| 1198 // them in stack trace. This is simlar to classic VM. | |
| 1199 if (!skip_throwableInit_check) { | |
| 1200 if (method->name() == vmSymbols::object_initializer_name() && | |
| 1201 throwable->is_a(method->method_holder())) { | |
| 1202 continue; | |
| 1203 } else { | |
| 1204 // if no "Throwable.init()" method found, we stop checking it next time. | |
| 1205 skip_throwableInit_check = true; | |
| 1206 } | |
| 1207 } | |
| 1208 bt.push(method, bci, CHECK); | |
| 1209 total_count++; | |
| 1210 } | |
| 1211 | |
| 1212 // Put completed stack trace into throwable object | |
| 1213 set_backtrace(throwable(), bt.backtrace()); | |
| 1214 } | |
| 1215 | |
| 1216 void java_lang_Throwable::fill_in_stack_trace(Handle throwable) { | |
| 1217 // No-op if stack trace is disabled | |
| 1218 if (!StackTraceInThrowable) { | |
| 1219 return; | |
| 1220 } | |
| 1221 | |
| 1222 // Disable stack traces for some preallocated out of memory errors | |
| 1223 if (!Universe::should_fill_in_stack_trace(throwable)) { | |
| 1224 return; | |
| 1225 } | |
| 1226 | |
| 1227 PRESERVE_EXCEPTION_MARK; | |
| 1228 | |
| 1229 JavaThread* thread = JavaThread::active(); | |
| 1230 fill_in_stack_trace(throwable, thread); | |
| 1231 // ignore exceptions thrown during stack trace filling | |
| 1232 CLEAR_PENDING_EXCEPTION; | |
| 1233 } | |
| 1234 | |
| 1235 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) { | |
| 1236 // Allocate stack trace - backtrace is created but not filled in | |
| 1237 | |
| 1238 // No-op if stack trace is disabled | |
| 1239 if (!StackTraceInThrowable) return; | |
| 1240 | |
| 1241 objArrayOop h_oop = oopFactory::new_objectArray(trace_size, CHECK); | |
| 1242 objArrayHandle backtrace (THREAD, h_oop); | |
| 1243 objArrayOop m_oop = oopFactory::new_objectArray(trace_chunk_size, CHECK); | |
| 1244 objArrayHandle methods (THREAD, m_oop); | |
| 1245 typeArrayOop b = oopFactory::new_shortArray(trace_chunk_size, CHECK); | |
| 1246 typeArrayHandle bcis(THREAD, b); | |
| 1247 | |
| 1248 // backtrace has space for one chunk (next is NULL) | |
| 1249 backtrace->obj_at_put(trace_methods_offset, methods()); | |
| 1250 backtrace->obj_at_put(trace_bcis_offset, bcis()); | |
| 1251 set_backtrace(throwable(), backtrace()); | |
| 1252 } | |
| 1253 | |
| 1254 | |
| 1255 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) { | |
| 1256 // Fill in stack trace into preallocated backtrace (no GC) | |
| 1257 | |
| 1258 // No-op if stack trace is disabled | |
| 1259 if (!StackTraceInThrowable) return; | |
| 1260 | |
| 1261 assert(throwable->is_a(SystemDictionary::throwable_klass()), "sanity check"); | |
| 1262 | |
| 1263 oop backtrace = java_lang_Throwable::backtrace(throwable()); | |
| 1264 assert(backtrace != NULL, "backtrace not preallocated"); | |
| 1265 | |
| 1266 oop m = objArrayOop(backtrace)->obj_at(trace_methods_offset); | |
| 1267 objArrayOop methods = objArrayOop(m); | |
| 1268 assert(methods != NULL && methods->length() > 0, "method array not preallocated"); | |
| 1269 | |
| 1270 oop b = objArrayOop(backtrace)->obj_at(trace_bcis_offset); | |
| 1271 typeArrayOop bcis = typeArrayOop(b); | |
| 1272 assert(bcis != NULL, "bci array not preallocated"); | |
| 1273 | |
| 1274 assert(methods->length() == bcis->length(), "method and bci arrays should match"); | |
| 1275 | |
| 1276 JavaThread* thread = JavaThread::current(); | |
| 1277 ResourceMark rm(thread); | |
| 1278 vframeStream st(thread); | |
| 1279 | |
| 1280 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init | |
| 1281 // methods as preallocated errors aren't created by "java" code. | |
| 1282 | |
| 1283 // fill in as much stack trace as possible | |
| 1284 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth); | |
| 1285 int chunk_count = 0; | |
| 1286 | |
| 1287 for (;!st.at_end(); st.next()) { | |
| 1288 // add element | |
| 1289 bcis->ushort_at_put(chunk_count, st.bci()); | |
| 1290 methods->obj_at_put(chunk_count, st.method()); | |
| 1291 | |
| 1292 chunk_count++; | |
| 1293 | |
| 1294 // Bail-out for deep stacks | |
| 1295 if (chunk_count >= max_chunks) break; | |
| 1296 } | |
| 1297 } | |
| 1298 | |
| 1299 | |
| 1300 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) { | |
| 1301 if (throwable == NULL) { | |
| 1302 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 1303 } | |
| 1304 objArrayOop chunk = objArrayOop(backtrace(throwable)); | |
| 1305 int depth = 0; | |
| 1306 if (chunk != NULL) { | |
| 1307 // Iterate over chunks and count full ones | |
| 1308 while (true) { | |
| 1309 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset)); | |
| 1310 if (next == NULL) break; | |
| 1311 depth += trace_chunk_size; | |
| 1312 chunk = next; | |
| 1313 } | |
| 1314 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check"); | |
| 1315 // Count element in remaining partial chunk | |
| 1316 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset)); | |
| 1317 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset)); | |
| 1318 assert(methods != NULL && bcis != NULL, "sanity check"); | |
| 1319 for (int i = 0; i < methods->length(); i++) { | |
| 1320 if (methods->obj_at(i) == NULL) break; | |
| 1321 depth++; | |
| 1322 } | |
| 1323 } | |
| 1324 return depth; | |
| 1325 } | |
| 1326 | |
| 1327 | |
| 1328 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) { | |
| 1329 if (throwable == NULL) { | |
| 1330 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 1331 } | |
| 1332 if (index < 0) { | |
| 1333 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); | |
| 1334 } | |
| 1335 // Compute how many chunks to skip and index into actual chunk | |
| 1336 objArrayOop chunk = objArrayOop(backtrace(throwable)); | |
| 1337 int skip_chunks = index / trace_chunk_size; | |
| 1338 int chunk_index = index % trace_chunk_size; | |
| 1339 while (chunk != NULL && skip_chunks > 0) { | |
| 1340 chunk = objArrayOop(chunk->obj_at(trace_next_offset)); | |
| 1341 skip_chunks--; | |
| 1342 } | |
| 1343 if (chunk == NULL) { | |
| 1344 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); | |
| 1345 } | |
| 1346 // Get method,bci from chunk | |
| 1347 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset)); | |
| 1348 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset)); | |
| 1349 assert(methods != NULL && bcis != NULL, "sanity check"); | |
| 1350 methodHandle method(THREAD, methodOop(methods->obj_at(chunk_index))); | |
| 1351 int bci = bcis->ushort_at(chunk_index); | |
| 1352 // Chunk can be partial full | |
| 1353 if (method.is_null()) { | |
| 1354 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); | |
| 1355 } | |
| 1356 | |
| 1357 oop element = java_lang_StackTraceElement::create(method, bci, CHECK_0); | |
| 1358 return element; | |
| 1359 } | |
| 1360 | |
| 1361 oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) { | |
| 1362 // SystemDictionary::stackTraceElement_klass() will be null for pre-1.4 JDKs | |
| 1363 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4"); | |
| 1364 | |
| 1365 // Allocate java.lang.StackTraceElement instance | |
| 1366 klassOop k = SystemDictionary::stackTraceElement_klass(); | |
| 1367 instanceKlassHandle ik (THREAD, k); | |
| 1368 if (ik->should_be_initialized()) { | |
| 1369 ik->initialize(CHECK_0); | |
| 1370 } | |
| 1371 | |
| 1372 Handle element = ik->allocate_instance_handle(CHECK_0); | |
| 1373 // Fill in class name | |
| 1374 ResourceMark rm(THREAD); | |
| 1375 const char* str = instanceKlass::cast(method->method_holder())->external_name(); | |
| 1376 oop classname = StringTable::intern((char*) str, CHECK_0); | |
| 1377 java_lang_StackTraceElement::set_declaringClass(element(), classname); | |
| 1378 // Fill in method name | |
| 1379 oop methodname = StringTable::intern(method->name(), CHECK_0); | |
| 1380 java_lang_StackTraceElement::set_methodName(element(), methodname); | |
| 1381 // Fill in source file name | |
| 1382 symbolOop source = instanceKlass::cast(method->method_holder())->source_file_name(); | |
| 1383 oop filename = StringTable::intern(source, CHECK_0); | |
| 1384 java_lang_StackTraceElement::set_fileName(element(), filename); | |
| 1385 // File in source line number | |
| 1386 int line_number; | |
| 1387 if (method->is_native()) { | |
| 1388 // Negative value different from -1 below, enabling Java code in | |
| 1389 // class java.lang.StackTraceElement to distinguish "native" from | |
| 1390 // "no LineNumberTable". | |
| 1391 line_number = -2; | |
| 1392 } else { | |
| 1393 // Returns -1 if no LineNumberTable, and otherwise actual line number | |
| 1394 line_number = method->line_number_from_bci(bci); | |
| 1395 } | |
| 1396 java_lang_StackTraceElement::set_lineNumber(element(), line_number); | |
| 1397 | |
| 1398 return element(); | |
| 1399 } | |
| 1400 | |
| 1401 | |
| 1402 void java_lang_reflect_AccessibleObject::compute_offsets() { | |
| 1403 klassOop k = SystemDictionary::reflect_accessible_object_klass(); | |
| 1404 COMPUTE_OFFSET("java.lang.reflect.AccessibleObject", override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature()); | |
| 1405 } | |
| 1406 | |
| 1407 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) { | |
| 1408 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1409 return (jboolean) reflect->bool_field(override_offset); | |
| 1410 } | |
| 1411 | |
| 1412 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) { | |
| 1413 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1414 reflect->bool_field_put(override_offset, (int) value); | |
| 1415 } | |
| 1416 | |
| 1417 void java_lang_reflect_Method::compute_offsets() { | |
| 1418 klassOop k = SystemDictionary::reflect_method_klass(); | |
| 1419 COMPUTE_OFFSET("java.lang.reflect.Method", clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); | |
| 1420 COMPUTE_OFFSET("java.lang.reflect.Method", name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); | |
| 1421 COMPUTE_OFFSET("java.lang.reflect.Method", returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature()); | |
| 1422 COMPUTE_OFFSET("java.lang.reflect.Method", parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature()); | |
| 1423 COMPUTE_OFFSET("java.lang.reflect.Method", exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature()); | |
| 1424 COMPUTE_OFFSET("java.lang.reflect.Method", slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); | |
| 1425 COMPUTE_OFFSET("java.lang.reflect.Method", modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); | |
| 1426 // The generic signature and annotations fields are only present in 1.5 | |
| 1427 signature_offset = -1; | |
| 1428 annotations_offset = -1; | |
| 1429 parameter_annotations_offset = -1; | |
| 1430 annotation_default_offset = -1; | |
| 1431 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Method", signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); | |
| 1432 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Method", annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); | |
| 1433 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Method", parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature()); | |
| 1434 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Method", annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature()); | |
| 1435 } | |
| 1436 | |
| 1437 Handle java_lang_reflect_Method::create(TRAPS) { | |
| 1438 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1439 klassOop klass = SystemDictionary::reflect_method_klass(); | |
| 1440 // This class is eagerly initialized during VM initialization, since we keep a refence | |
| 1441 // to one of the methods | |
| 1442 assert(instanceKlass::cast(klass)->is_initialized(), "must be initialized"); | |
| 1443 return instanceKlass::cast(klass)->allocate_instance_handle(CHECK_NH); | |
| 1444 } | |
| 1445 | |
| 1446 oop java_lang_reflect_Method::clazz(oop reflect) { | |
| 1447 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1448 return reflect->obj_field(clazz_offset); | |
| 1449 } | |
| 1450 | |
| 1451 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) { | |
| 1452 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1453 reflect->obj_field_put(clazz_offset, value); | |
| 1454 } | |
| 1455 | |
| 1456 int java_lang_reflect_Method::slot(oop reflect) { | |
| 1457 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1458 return reflect->int_field(slot_offset); | |
| 1459 } | |
| 1460 | |
| 1461 void java_lang_reflect_Method::set_slot(oop reflect, int value) { | |
| 1462 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1463 reflect->int_field_put(slot_offset, value); | |
| 1464 } | |
| 1465 | |
| 1466 oop java_lang_reflect_Method::name(oop method) { | |
| 1467 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1468 return method->obj_field(name_offset); | |
| 1469 } | |
| 1470 | |
| 1471 void java_lang_reflect_Method::set_name(oop method, oop value) { | |
| 1472 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1473 method->obj_field_put(name_offset, value); | |
| 1474 } | |
| 1475 | |
| 1476 oop java_lang_reflect_Method::return_type(oop method) { | |
| 1477 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1478 return method->obj_field(returnType_offset); | |
| 1479 } | |
| 1480 | |
| 1481 void java_lang_reflect_Method::set_return_type(oop method, oop value) { | |
| 1482 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1483 method->obj_field_put(returnType_offset, value); | |
| 1484 } | |
| 1485 | |
| 1486 oop java_lang_reflect_Method::parameter_types(oop method) { | |
| 1487 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1488 return method->obj_field(parameterTypes_offset); | |
| 1489 } | |
| 1490 | |
| 1491 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) { | |
| 1492 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1493 method->obj_field_put(parameterTypes_offset, value); | |
| 1494 } | |
| 1495 | |
| 1496 oop java_lang_reflect_Method::exception_types(oop method) { | |
| 1497 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1498 return method->obj_field(exceptionTypes_offset); | |
| 1499 } | |
| 1500 | |
| 1501 void java_lang_reflect_Method::set_exception_types(oop method, oop value) { | |
| 1502 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1503 method->obj_field_put(exceptionTypes_offset, value); | |
| 1504 } | |
| 1505 | |
| 1506 int java_lang_reflect_Method::modifiers(oop method) { | |
| 1507 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1508 return method->int_field(modifiers_offset); | |
| 1509 } | |
| 1510 | |
| 1511 void java_lang_reflect_Method::set_modifiers(oop method, int value) { | |
| 1512 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1513 method->int_field_put(modifiers_offset, value); | |
| 1514 } | |
| 1515 | |
| 1516 bool java_lang_reflect_Method::has_signature_field() { | |
| 1517 return (signature_offset >= 0); | |
| 1518 } | |
| 1519 | |
| 1520 oop java_lang_reflect_Method::signature(oop method) { | |
| 1521 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1522 assert(has_signature_field(), "signature field must be present"); | |
| 1523 return method->obj_field(signature_offset); | |
| 1524 } | |
| 1525 | |
| 1526 void java_lang_reflect_Method::set_signature(oop method, oop value) { | |
| 1527 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1528 assert(has_signature_field(), "signature field must be present"); | |
| 1529 method->obj_field_put(signature_offset, value); | |
| 1530 } | |
| 1531 | |
| 1532 bool java_lang_reflect_Method::has_annotations_field() { | |
| 1533 return (annotations_offset >= 0); | |
| 1534 } | |
| 1535 | |
| 1536 oop java_lang_reflect_Method::annotations(oop method) { | |
| 1537 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1538 assert(has_annotations_field(), "annotations field must be present"); | |
| 1539 return method->obj_field(annotations_offset); | |
| 1540 } | |
| 1541 | |
| 1542 void java_lang_reflect_Method::set_annotations(oop method, oop value) { | |
| 1543 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1544 assert(has_annotations_field(), "annotations field must be present"); | |
| 1545 method->obj_field_put(annotations_offset, value); | |
| 1546 } | |
| 1547 | |
| 1548 bool java_lang_reflect_Method::has_parameter_annotations_field() { | |
| 1549 return (parameter_annotations_offset >= 0); | |
| 1550 } | |
| 1551 | |
| 1552 oop java_lang_reflect_Method::parameter_annotations(oop method) { | |
| 1553 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1554 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); | |
| 1555 return method->obj_field(parameter_annotations_offset); | |
| 1556 } | |
| 1557 | |
| 1558 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) { | |
| 1559 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1560 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); | |
| 1561 method->obj_field_put(parameter_annotations_offset, value); | |
| 1562 } | |
| 1563 | |
| 1564 bool java_lang_reflect_Method::has_annotation_default_field() { | |
| 1565 return (annotation_default_offset >= 0); | |
| 1566 } | |
| 1567 | |
| 1568 oop java_lang_reflect_Method::annotation_default(oop method) { | |
| 1569 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1570 assert(has_annotation_default_field(), "annotation default field must be present"); | |
| 1571 return method->obj_field(annotation_default_offset); | |
| 1572 } | |
| 1573 | |
| 1574 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) { | |
| 1575 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1576 assert(has_annotation_default_field(), "annotation default field must be present"); | |
| 1577 method->obj_field_put(annotation_default_offset, value); | |
| 1578 } | |
| 1579 | |
| 1580 void java_lang_reflect_Constructor::compute_offsets() { | |
| 1581 klassOop k = SystemDictionary::reflect_constructor_klass(); | |
| 1582 COMPUTE_OFFSET("java.lang.reflect.Constructor", clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); | |
| 1583 COMPUTE_OFFSET("java.lang.reflect.Constructor", parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature()); | |
| 1584 COMPUTE_OFFSET("java.lang.reflect.Constructor", exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature()); | |
| 1585 COMPUTE_OFFSET("java.lang.reflect.Constructor", slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); | |
| 1586 COMPUTE_OFFSET("java.lang.reflect.Constructor", modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); | |
| 1587 // The generic signature and annotations fields are only present in 1.5 | |
| 1588 signature_offset = -1; | |
| 1589 annotations_offset = -1; | |
| 1590 parameter_annotations_offset = -1; | |
| 1591 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Constructor", signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); | |
| 1592 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Constructor", annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); | |
| 1593 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Constructor", parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature()); | |
| 1594 } | |
| 1595 | |
| 1596 Handle java_lang_reflect_Constructor::create(TRAPS) { | |
| 1597 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1598 symbolHandle name = vmSymbolHandles::java_lang_reflect_Constructor(); | |
| 1599 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH); | |
| 1600 instanceKlassHandle klass (THREAD, k); | |
| 1601 // Ensure it is initialized | |
| 1602 klass->initialize(CHECK_NH); | |
| 1603 return klass->allocate_instance_handle(CHECK_NH); | |
| 1604 } | |
| 1605 | |
| 1606 oop java_lang_reflect_Constructor::clazz(oop reflect) { | |
| 1607 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1608 return reflect->obj_field(clazz_offset); | |
| 1609 } | |
| 1610 | |
| 1611 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) { | |
| 1612 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1613 reflect->obj_field_put(clazz_offset, value); | |
| 1614 } | |
| 1615 | |
| 1616 oop java_lang_reflect_Constructor::parameter_types(oop constructor) { | |
| 1617 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1618 return constructor->obj_field(parameterTypes_offset); | |
| 1619 } | |
| 1620 | |
| 1621 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) { | |
| 1622 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1623 constructor->obj_field_put(parameterTypes_offset, value); | |
| 1624 } | |
| 1625 | |
| 1626 oop java_lang_reflect_Constructor::exception_types(oop constructor) { | |
| 1627 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1628 return constructor->obj_field(exceptionTypes_offset); | |
| 1629 } | |
| 1630 | |
| 1631 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) { | |
| 1632 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1633 constructor->obj_field_put(exceptionTypes_offset, value); | |
| 1634 } | |
| 1635 | |
| 1636 int java_lang_reflect_Constructor::slot(oop reflect) { | |
| 1637 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1638 return reflect->int_field(slot_offset); | |
| 1639 } | |
| 1640 | |
| 1641 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) { | |
| 1642 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1643 reflect->int_field_put(slot_offset, value); | |
| 1644 } | |
| 1645 | |
| 1646 int java_lang_reflect_Constructor::modifiers(oop constructor) { | |
| 1647 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1648 return constructor->int_field(modifiers_offset); | |
| 1649 } | |
| 1650 | |
| 1651 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) { | |
| 1652 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1653 constructor->int_field_put(modifiers_offset, value); | |
| 1654 } | |
| 1655 | |
| 1656 bool java_lang_reflect_Constructor::has_signature_field() { | |
| 1657 return (signature_offset >= 0); | |
| 1658 } | |
| 1659 | |
| 1660 oop java_lang_reflect_Constructor::signature(oop constructor) { | |
| 1661 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1662 assert(has_signature_field(), "signature field must be present"); | |
| 1663 return constructor->obj_field(signature_offset); | |
| 1664 } | |
| 1665 | |
| 1666 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) { | |
| 1667 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1668 assert(has_signature_field(), "signature field must be present"); | |
| 1669 constructor->obj_field_put(signature_offset, value); | |
| 1670 } | |
| 1671 | |
| 1672 bool java_lang_reflect_Constructor::has_annotations_field() { | |
| 1673 return (annotations_offset >= 0); | |
| 1674 } | |
| 1675 | |
| 1676 oop java_lang_reflect_Constructor::annotations(oop constructor) { | |
| 1677 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1678 assert(has_annotations_field(), "annotations field must be present"); | |
| 1679 return constructor->obj_field(annotations_offset); | |
| 1680 } | |
| 1681 | |
| 1682 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) { | |
| 1683 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1684 assert(has_annotations_field(), "annotations field must be present"); | |
| 1685 constructor->obj_field_put(annotations_offset, value); | |
| 1686 } | |
| 1687 | |
| 1688 bool java_lang_reflect_Constructor::has_parameter_annotations_field() { | |
| 1689 return (parameter_annotations_offset >= 0); | |
| 1690 } | |
| 1691 | |
| 1692 oop java_lang_reflect_Constructor::parameter_annotations(oop method) { | |
| 1693 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1694 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); | |
| 1695 return method->obj_field(parameter_annotations_offset); | |
| 1696 } | |
| 1697 | |
| 1698 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) { | |
| 1699 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1700 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); | |
| 1701 method->obj_field_put(parameter_annotations_offset, value); | |
| 1702 } | |
| 1703 | |
| 1704 void java_lang_reflect_Field::compute_offsets() { | |
| 1705 klassOop k = SystemDictionary::reflect_field_klass(); | |
| 1706 COMPUTE_OFFSET("java.lang.reflect.Field", clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); | |
| 1707 COMPUTE_OFFSET("java.lang.reflect.Field", name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); | |
| 1708 COMPUTE_OFFSET("java.lang.reflect.Field", type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature()); | |
| 1709 COMPUTE_OFFSET("java.lang.reflect.Field", slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); | |
| 1710 COMPUTE_OFFSET("java.lang.reflect.Field", modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); | |
| 1711 // The generic signature and annotations fields are only present in 1.5 | |
| 1712 signature_offset = -1; | |
| 1713 annotations_offset = -1; | |
| 1714 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Field", signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); | |
| 1715 COMPUTE_OPTIONAL_OFFSET("java.lang.reflect.Field", annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); | |
| 1716 } | |
| 1717 | |
| 1718 Handle java_lang_reflect_Field::create(TRAPS) { | |
| 1719 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1720 symbolHandle name = vmSymbolHandles::java_lang_reflect_Field(); | |
| 1721 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH); | |
| 1722 instanceKlassHandle klass (THREAD, k); | |
| 1723 // Ensure it is initialized | |
| 1724 klass->initialize(CHECK_NH); | |
| 1725 return klass->allocate_instance_handle(CHECK_NH); | |
| 1726 } | |
| 1727 | |
| 1728 oop java_lang_reflect_Field::clazz(oop reflect) { | |
| 1729 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1730 return reflect->obj_field(clazz_offset); | |
| 1731 } | |
| 1732 | |
| 1733 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) { | |
| 1734 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1735 reflect->obj_field_put(clazz_offset, value); | |
| 1736 } | |
| 1737 | |
| 1738 oop java_lang_reflect_Field::name(oop field) { | |
| 1739 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1740 return field->obj_field(name_offset); | |
| 1741 } | |
| 1742 | |
| 1743 void java_lang_reflect_Field::set_name(oop field, oop value) { | |
| 1744 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1745 field->obj_field_put(name_offset, value); | |
| 1746 } | |
| 1747 | |
| 1748 oop java_lang_reflect_Field::type(oop field) { | |
| 1749 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1750 return field->obj_field(type_offset); | |
| 1751 } | |
| 1752 | |
| 1753 void java_lang_reflect_Field::set_type(oop field, oop value) { | |
| 1754 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1755 field->obj_field_put(type_offset, value); | |
| 1756 } | |
| 1757 | |
| 1758 int java_lang_reflect_Field::slot(oop reflect) { | |
| 1759 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1760 return reflect->int_field(slot_offset); | |
| 1761 } | |
| 1762 | |
| 1763 void java_lang_reflect_Field::set_slot(oop reflect, int value) { | |
| 1764 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1765 reflect->int_field_put(slot_offset, value); | |
| 1766 } | |
| 1767 | |
| 1768 int java_lang_reflect_Field::modifiers(oop field) { | |
| 1769 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1770 return field->int_field(modifiers_offset); | |
| 1771 } | |
| 1772 | |
| 1773 void java_lang_reflect_Field::set_modifiers(oop field, int value) { | |
| 1774 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1775 field->int_field_put(modifiers_offset, value); | |
| 1776 } | |
| 1777 | |
| 1778 bool java_lang_reflect_Field::has_signature_field() { | |
| 1779 return (signature_offset >= 0); | |
| 1780 } | |
| 1781 | |
| 1782 oop java_lang_reflect_Field::signature(oop field) { | |
| 1783 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1784 assert(has_signature_field(), "signature field must be present"); | |
| 1785 return field->obj_field(signature_offset); | |
| 1786 } | |
| 1787 | |
| 1788 void java_lang_reflect_Field::set_signature(oop field, oop value) { | |
| 1789 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1790 assert(has_signature_field(), "signature field must be present"); | |
| 1791 field->obj_field_put(signature_offset, value); | |
| 1792 } | |
| 1793 | |
| 1794 bool java_lang_reflect_Field::has_annotations_field() { | |
| 1795 return (annotations_offset >= 0); | |
| 1796 } | |
| 1797 | |
| 1798 oop java_lang_reflect_Field::annotations(oop field) { | |
| 1799 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1800 assert(has_annotations_field(), "annotations field must be present"); | |
| 1801 return field->obj_field(annotations_offset); | |
| 1802 } | |
| 1803 | |
| 1804 void java_lang_reflect_Field::set_annotations(oop field, oop value) { | |
| 1805 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1806 assert(has_annotations_field(), "annotations field must be present"); | |
| 1807 field->obj_field_put(annotations_offset, value); | |
| 1808 } | |
| 1809 | |
| 1810 | |
| 1811 void sun_reflect_ConstantPool::compute_offsets() { | |
| 1812 klassOop k = SystemDictionary::reflect_constant_pool_klass(); | |
| 1813 // This null test can be removed post beta | |
| 1814 if (k != NULL) { | |
| 1815 COMPUTE_OFFSET("sun.reflect.ConstantPool", _cp_oop_offset, k, vmSymbols::constantPoolOop_name(), vmSymbols::object_signature()); | |
| 1816 } | |
| 1817 } | |
| 1818 | |
| 1819 | |
| 1820 Handle sun_reflect_ConstantPool::create(TRAPS) { | |
| 1821 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1822 klassOop k = SystemDictionary::reflect_constant_pool_klass(); | |
| 1823 instanceKlassHandle klass (THREAD, k); | |
| 1824 // Ensure it is initialized | |
| 1825 klass->initialize(CHECK_NH); | |
| 1826 return klass->allocate_instance_handle(CHECK_NH); | |
| 1827 } | |
| 1828 | |
| 1829 | |
| 1830 oop sun_reflect_ConstantPool::cp_oop(oop reflect) { | |
| 1831 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1832 return reflect->obj_field(_cp_oop_offset); | |
| 1833 } | |
| 1834 | |
| 1835 | |
| 1836 void sun_reflect_ConstantPool::set_cp_oop(oop reflect, oop value) { | |
| 1837 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1838 reflect->obj_field_put(_cp_oop_offset, value); | |
| 1839 } | |
| 1840 | |
| 1841 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() { | |
| 1842 klassOop k = SystemDictionary::reflect_unsafe_static_field_accessor_impl_klass(); | |
| 1843 // This null test can be removed post beta | |
| 1844 if (k != NULL) { | |
| 1845 COMPUTE_OFFSET("sun.reflect.UnsafeStaticFieldAccessorImpl", _base_offset, k, | |
| 1846 vmSymbols::base_name(), vmSymbols::object_signature()); | |
| 1847 } | |
| 1848 } | |
| 1849 | |
| 1850 oop java_lang_boxing_object::initialize_and_allocate(klassOop k, TRAPS) { | |
| 1851 instanceKlassHandle h (THREAD, k); | |
| 1852 if (!h->is_initialized()) h->initialize(CHECK_0); | |
| 1853 return h->allocate_instance(THREAD); | |
| 1854 } | |
| 1855 | |
| 1856 | |
| 1857 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) { | |
| 1858 oop box; | |
| 1859 switch (type) { | |
| 1860 case T_BOOLEAN: | |
| 1861 box = initialize_and_allocate(SystemDictionary::boolean_klass(), CHECK_0); | |
| 1862 box->bool_field_put(value_offset, value->z); | |
| 1863 break; | |
| 1864 case T_CHAR: | |
| 1865 box = initialize_and_allocate(SystemDictionary::char_klass(), CHECK_0); | |
| 1866 box->char_field_put(value_offset, value->c); | |
| 1867 break; | |
| 1868 case T_FLOAT: | |
| 1869 box = initialize_and_allocate(SystemDictionary::float_klass(), CHECK_0); | |
| 1870 box->float_field_put(value_offset, value->f); | |
| 1871 break; | |
| 1872 case T_DOUBLE: | |
| 1873 box = initialize_and_allocate(SystemDictionary::double_klass(), CHECK_0); | |
| 1874 box->double_field_put(value_offset, value->d); | |
| 1875 break; | |
| 1876 case T_BYTE: | |
| 1877 box = initialize_and_allocate(SystemDictionary::byte_klass(), CHECK_0); | |
| 1878 box->byte_field_put(value_offset, value->b); | |
| 1879 break; | |
| 1880 case T_SHORT: | |
| 1881 box = initialize_and_allocate(SystemDictionary::short_klass(), CHECK_0); | |
| 1882 box->short_field_put(value_offset, value->s); | |
| 1883 break; | |
| 1884 case T_INT: | |
| 1885 box = initialize_and_allocate(SystemDictionary::int_klass(), CHECK_0); | |
| 1886 box->int_field_put(value_offset, value->i); | |
| 1887 break; | |
| 1888 case T_LONG: | |
| 1889 box = initialize_and_allocate(SystemDictionary::long_klass(), CHECK_0); | |
| 1890 box->long_field_put(value_offset, value->j); | |
| 1891 break; | |
| 1892 default: | |
| 1893 return NULL; | |
| 1894 } | |
| 1895 return box; | |
| 1896 } | |
| 1897 | |
| 1898 | |
| 1899 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) { | |
| 1900 klassOop k = box->klass(); | |
| 1901 if (k == SystemDictionary::boolean_klass()) { | |
| 1902 value->z = box->bool_field(value_offset); | |
| 1903 return T_BOOLEAN; | |
| 1904 } | |
| 1905 if (k == SystemDictionary::char_klass()) { | |
| 1906 value->c = box->char_field(value_offset); | |
| 1907 return T_CHAR; | |
| 1908 } | |
| 1909 if (k == SystemDictionary::float_klass()) { | |
| 1910 value->f = box->float_field(value_offset); | |
| 1911 return T_FLOAT; | |
| 1912 } | |
| 1913 if (k == SystemDictionary::double_klass()) { | |
| 1914 value->d = box->double_field(value_offset); | |
| 1915 return T_DOUBLE; | |
| 1916 } | |
| 1917 if (k == SystemDictionary::byte_klass()) { | |
| 1918 value->b = box->byte_field(value_offset); | |
| 1919 return T_BYTE; | |
| 1920 } | |
| 1921 if (k == SystemDictionary::short_klass()) { | |
| 1922 value->s = box->short_field(value_offset); | |
| 1923 return T_SHORT; | |
| 1924 } | |
| 1925 if (k == SystemDictionary::int_klass()) { | |
| 1926 value->i = box->int_field(value_offset); | |
| 1927 return T_INT; | |
| 1928 } | |
| 1929 if (k == SystemDictionary::long_klass()) { | |
| 1930 value->j = box->long_field(value_offset); | |
| 1931 return T_LONG; | |
| 1932 } | |
| 1933 return T_ILLEGAL; | |
| 1934 } | |
| 1935 | |
| 1936 | |
| 1937 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) { | |
| 1938 klassOop k = box->klass(); | |
| 1939 if (k == SystemDictionary::boolean_klass()) { | |
| 1940 box->bool_field_put(value_offset, value->z); | |
| 1941 return T_BOOLEAN; | |
| 1942 } | |
| 1943 if (k == SystemDictionary::char_klass()) { | |
| 1944 box->char_field_put(value_offset, value->c); | |
| 1945 return T_CHAR; | |
| 1946 } | |
| 1947 if (k == SystemDictionary::float_klass()) { | |
| 1948 box->float_field_put(value_offset, value->f); | |
| 1949 return T_FLOAT; | |
| 1950 } | |
| 1951 if (k == SystemDictionary::double_klass()) { | |
| 1952 box->double_field_put(value_offset, value->d); | |
| 1953 return T_DOUBLE; | |
| 1954 } | |
| 1955 if (k == SystemDictionary::byte_klass()) { | |
| 1956 box->byte_field_put(value_offset, value->b); | |
| 1957 return T_BYTE; | |
| 1958 } | |
| 1959 if (k == SystemDictionary::short_klass()) { | |
| 1960 box->short_field_put(value_offset, value->s); | |
| 1961 return T_SHORT; | |
| 1962 } | |
| 1963 if (k == SystemDictionary::int_klass()) { | |
| 1964 box->int_field_put(value_offset, value->i); | |
| 1965 return T_INT; | |
| 1966 } | |
| 1967 if (k == SystemDictionary::long_klass()) { | |
| 1968 box->long_field_put(value_offset, value->j); | |
| 1969 return T_LONG; | |
| 1970 } | |
| 1971 return T_ILLEGAL; | |
| 1972 } | |
| 1973 | |
| 1974 | |
| 1975 // Support for java_lang_ref_Reference | |
| 1976 | |
| 1977 void java_lang_ref_Reference::set_referent(oop ref, oop value) { | |
| 1978 ref->obj_field_put(referent_offset, value); | |
| 1979 } | |
| 1980 | |
| 1981 oop* java_lang_ref_Reference::referent_addr(oop ref) { | |
| 1982 return ref->obj_field_addr(referent_offset); | |
| 1983 } | |
| 1984 | |
| 1985 void java_lang_ref_Reference::set_next(oop ref, oop value) { | |
| 1986 ref->obj_field_put(next_offset, value); | |
| 1987 } | |
| 1988 | |
| 1989 oop* java_lang_ref_Reference::next_addr(oop ref) { | |
| 1990 return ref->obj_field_addr(next_offset); | |
| 1991 } | |
| 1992 | |
| 1993 void java_lang_ref_Reference::set_discovered(oop ref, oop value) { | |
| 1994 ref->obj_field_put(discovered_offset, value); | |
| 1995 } | |
| 1996 | |
| 1997 oop* java_lang_ref_Reference::discovered_addr(oop ref) { | |
| 1998 return ref->obj_field_addr(discovered_offset); | |
| 1999 } | |
| 2000 | |
| 2001 oop* java_lang_ref_Reference::pending_list_lock_addr() { | |
| 2002 instanceKlass* ik = instanceKlass::cast(SystemDictionary::reference_klass()); | |
| 2003 return (oop*)(((char *)ik->start_of_static_fields()) + static_lock_offset); | |
| 2004 } | |
| 2005 | |
| 2006 oop* java_lang_ref_Reference::pending_list_addr() { | |
| 2007 instanceKlass* ik = instanceKlass::cast(SystemDictionary::reference_klass()); | |
| 2008 return (oop *)(((char *)ik->start_of_static_fields()) + static_pending_offset); | |
| 2009 } | |
| 2010 | |
| 2011 | |
| 2012 // Support for java_lang_ref_SoftReference | |
| 2013 | |
| 2014 jlong java_lang_ref_SoftReference::timestamp(oop ref) { | |
| 2015 return ref->long_field(timestamp_offset); | |
| 2016 } | |
| 2017 | |
| 2018 jlong java_lang_ref_SoftReference::clock() { | |
| 2019 instanceKlass* ik = instanceKlass::cast(SystemDictionary::soft_reference_klass()); | |
| 2020 int offset = ik->offset_of_static_fields() + static_clock_offset; | |
| 2021 | |
| 2022 return SystemDictionary::soft_reference_klass()->long_field(offset); | |
| 2023 } | |
| 2024 | |
| 2025 void java_lang_ref_SoftReference::set_clock(jlong value) { | |
| 2026 instanceKlass* ik = instanceKlass::cast(SystemDictionary::soft_reference_klass()); | |
| 2027 int offset = ik->offset_of_static_fields() + static_clock_offset; | |
| 2028 | |
| 2029 SystemDictionary::soft_reference_klass()->long_field_put(offset, value); | |
| 2030 } | |
| 2031 | |
| 2032 | |
| 2033 // Support for java_security_AccessControlContext | |
| 2034 | |
| 2035 int java_security_AccessControlContext::_context_offset = 0; | |
| 2036 int java_security_AccessControlContext::_privilegedContext_offset = 0; | |
| 2037 int java_security_AccessControlContext::_isPrivileged_offset = 0; | |
| 2038 | |
| 2039 | |
| 2040 void java_security_AccessControlContext::compute_offsets() { | |
| 2041 assert(_isPrivileged_offset == 0, "offsets should be initialized only once"); | |
| 2042 fieldDescriptor fd; | |
| 2043 instanceKlass* ik = instanceKlass::cast(SystemDictionary::AccessControlContext_klass()); | |
| 2044 | |
| 2045 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) { | |
| 2046 fatal("Invalid layout of java.security.AccessControlContext"); | |
| 2047 } | |
| 2048 _context_offset = fd.offset(); | |
| 2049 | |
| 2050 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) { | |
| 2051 fatal("Invalid layout of java.security.AccessControlContext"); | |
| 2052 } | |
| 2053 _privilegedContext_offset = fd.offset(); | |
| 2054 | |
| 2055 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) { | |
| 2056 fatal("Invalid layout of java.security.AccessControlContext"); | |
| 2057 } | |
| 2058 _isPrivileged_offset = fd.offset(); | |
| 2059 } | |
| 2060 | |
| 2061 | |
| 2062 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) { | |
| 2063 assert(_isPrivileged_offset != 0, "offsets should have been initialized"); | |
| 2064 // Ensure klass is initialized | |
| 2065 instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0); | |
| 2066 // Allocate result | |
| 2067 oop result = instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0); | |
| 2068 // Fill in values | |
| 2069 result->obj_field_put(_context_offset, context()); | |
| 2070 result->obj_field_put(_privilegedContext_offset, privileged_context()); | |
| 2071 result->bool_field_put(_isPrivileged_offset, isPrivileged); | |
| 2072 return result; | |
| 2073 } | |
| 2074 | |
| 2075 | |
| 2076 // Support for java_lang_ClassLoader | |
| 2077 | |
| 2078 oop java_lang_ClassLoader::parent(oop loader) { | |
| 2079 assert(loader->is_oop(), "loader must be oop"); | |
| 2080 return loader->obj_field(parent_offset); | |
| 2081 } | |
| 2082 | |
| 2083 | |
| 2084 bool java_lang_ClassLoader::is_trusted_loader(oop loader) { | |
| 2085 // Fix for 4474172; see evaluation for more details | |
| 2086 loader = non_reflection_class_loader(loader); | |
| 2087 | |
| 2088 oop cl = SystemDictionary::java_system_loader(); | |
| 2089 while(cl != NULL) { | |
| 2090 if (cl == loader) return true; | |
| 2091 cl = parent(cl); | |
| 2092 } | |
| 2093 return false; | |
| 2094 } | |
| 2095 | |
| 2096 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) { | |
| 2097 if (loader != NULL) { | |
| 2098 // See whether this is one of the class loaders associated with | |
| 2099 // the generated bytecodes for reflection, and if so, "magically" | |
| 2100 // delegate to its parent to prevent class loading from occurring | |
| 2101 // in places where applications using reflection didn't expect it. | |
| 2102 klassOop delegating_cl_class = SystemDictionary::reflect_delegating_classloader_klass(); | |
| 2103 // This might be null in non-1.4 JDKs | |
| 2104 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) { | |
| 2105 return parent(loader); | |
| 2106 } | |
| 2107 } | |
| 2108 return loader; | |
| 2109 } | |
| 2110 | |
| 2111 | |
| 2112 // Support for java_lang_System | |
| 2113 | |
| 2114 void java_lang_System::compute_offsets() { | |
| 2115 assert(offset_of_static_fields == 0, "offsets should be initialized only once"); | |
| 2116 | |
| 2117 instanceKlass* ik = instanceKlass::cast(SystemDictionary::system_klass()); | |
| 2118 offset_of_static_fields = ik->offset_of_static_fields(); | |
| 2119 } | |
| 2120 | |
| 2121 int java_lang_System::in_offset_in_bytes() { | |
| 2122 return (offset_of_static_fields + static_in_offset); | |
| 2123 } | |
| 2124 | |
| 2125 | |
| 2126 int java_lang_System::out_offset_in_bytes() { | |
| 2127 return (offset_of_static_fields + static_out_offset); | |
| 2128 } | |
| 2129 | |
| 2130 | |
| 2131 int java_lang_System::err_offset_in_bytes() { | |
| 2132 return (offset_of_static_fields + static_err_offset); | |
| 2133 } | |
| 2134 | |
| 2135 | |
| 2136 | |
| 2137 int java_lang_String::value_offset; | |
| 2138 int java_lang_String::offset_offset; | |
| 2139 int java_lang_String::count_offset; | |
| 2140 int java_lang_String::hash_offset; | |
| 2141 int java_lang_Class::klass_offset; | |
| 2142 int java_lang_Class::array_klass_offset; | |
| 2143 int java_lang_Class::resolved_constructor_offset; | |
| 2144 int java_lang_Class::number_of_fake_oop_fields; | |
| 2145 int java_lang_Throwable::backtrace_offset; | |
| 2146 int java_lang_Throwable::detailMessage_offset; | |
| 2147 int java_lang_Throwable::cause_offset; | |
| 2148 int java_lang_Throwable::stackTrace_offset; | |
| 2149 int java_lang_reflect_AccessibleObject::override_offset; | |
| 2150 int java_lang_reflect_Method::clazz_offset; | |
| 2151 int java_lang_reflect_Method::name_offset; | |
| 2152 int java_lang_reflect_Method::returnType_offset; | |
| 2153 int java_lang_reflect_Method::parameterTypes_offset; | |
| 2154 int java_lang_reflect_Method::exceptionTypes_offset; | |
| 2155 int java_lang_reflect_Method::slot_offset; | |
| 2156 int java_lang_reflect_Method::modifiers_offset; | |
| 2157 int java_lang_reflect_Method::signature_offset; | |
| 2158 int java_lang_reflect_Method::annotations_offset; | |
| 2159 int java_lang_reflect_Method::parameter_annotations_offset; | |
| 2160 int java_lang_reflect_Method::annotation_default_offset; | |
| 2161 int java_lang_reflect_Constructor::clazz_offset; | |
| 2162 int java_lang_reflect_Constructor::parameterTypes_offset; | |
| 2163 int java_lang_reflect_Constructor::exceptionTypes_offset; | |
| 2164 int java_lang_reflect_Constructor::slot_offset; | |
| 2165 int java_lang_reflect_Constructor::modifiers_offset; | |
| 2166 int java_lang_reflect_Constructor::signature_offset; | |
| 2167 int java_lang_reflect_Constructor::annotations_offset; | |
| 2168 int java_lang_reflect_Constructor::parameter_annotations_offset; | |
| 2169 int java_lang_reflect_Field::clazz_offset; | |
| 2170 int java_lang_reflect_Field::name_offset; | |
| 2171 int java_lang_reflect_Field::type_offset; | |
| 2172 int java_lang_reflect_Field::slot_offset; | |
| 2173 int java_lang_reflect_Field::modifiers_offset; | |
| 2174 int java_lang_reflect_Field::signature_offset; | |
| 2175 int java_lang_reflect_Field::annotations_offset; | |
| 2176 int java_lang_boxing_object::value_offset; | |
| 2177 int java_lang_ref_Reference::referent_offset; | |
| 2178 int java_lang_ref_Reference::queue_offset; | |
| 2179 int java_lang_ref_Reference::next_offset; | |
| 2180 int java_lang_ref_Reference::discovered_offset; | |
| 2181 int java_lang_ref_Reference::static_lock_offset; | |
| 2182 int java_lang_ref_Reference::static_pending_offset; | |
| 2183 int java_lang_ref_Reference::number_of_fake_oop_fields; | |
| 2184 int java_lang_ref_SoftReference::timestamp_offset; | |
| 2185 int java_lang_ref_SoftReference::static_clock_offset; | |
| 2186 int java_lang_ClassLoader::parent_offset; | |
| 2187 int java_lang_System::offset_of_static_fields; | |
| 2188 int java_lang_System::static_in_offset; | |
| 2189 int java_lang_System::static_out_offset; | |
| 2190 int java_lang_System::static_err_offset; | |
| 2191 int java_lang_StackTraceElement::declaringClass_offset; | |
| 2192 int java_lang_StackTraceElement::methodName_offset; | |
| 2193 int java_lang_StackTraceElement::fileName_offset; | |
| 2194 int java_lang_StackTraceElement::lineNumber_offset; | |
| 2195 int java_lang_AssertionStatusDirectives::classes_offset; | |
| 2196 int java_lang_AssertionStatusDirectives::classEnabled_offset; | |
| 2197 int java_lang_AssertionStatusDirectives::packages_offset; | |
| 2198 int java_lang_AssertionStatusDirectives::packageEnabled_offset; | |
| 2199 int java_lang_AssertionStatusDirectives::deflt_offset; | |
| 2200 int java_nio_Buffer::_limit_offset; | |
| 2201 int sun_misc_AtomicLongCSImpl::_value_offset; | |
| 2202 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0; | |
| 2203 int sun_reflect_ConstantPool::_cp_oop_offset; | |
| 2204 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset; | |
| 2205 | |
| 2206 | |
| 2207 // Support for java_lang_StackTraceElement | |
| 2208 | |
| 2209 void java_lang_StackTraceElement::set_fileName(oop element, oop value) { | |
| 2210 element->obj_field_put(fileName_offset, value); | |
| 2211 } | |
| 2212 | |
| 2213 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) { | |
| 2214 element->obj_field_put(declaringClass_offset, value); | |
| 2215 } | |
| 2216 | |
| 2217 void java_lang_StackTraceElement::set_methodName(oop element, oop value) { | |
| 2218 element->obj_field_put(methodName_offset, value); | |
| 2219 } | |
| 2220 | |
| 2221 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) { | |
| 2222 element->int_field_put(lineNumber_offset, value); | |
| 2223 } | |
| 2224 | |
| 2225 | |
| 2226 // Support for java Assertions - java_lang_AssertionStatusDirectives. | |
| 2227 | |
| 2228 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) { | |
| 2229 o->obj_field_put(classes_offset, val); | |
| 2230 } | |
| 2231 | |
| 2232 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) { | |
| 2233 o->obj_field_put(classEnabled_offset, val); | |
| 2234 } | |
| 2235 | |
| 2236 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) { | |
| 2237 o->obj_field_put(packages_offset, val); | |
| 2238 } | |
| 2239 | |
| 2240 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) { | |
| 2241 o->obj_field_put(packageEnabled_offset, val); | |
| 2242 } | |
| 2243 | |
| 2244 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) { | |
| 2245 o->bool_field_put(deflt_offset, val); | |
| 2246 } | |
| 2247 | |
| 2248 | |
| 2249 // Support for intrinsification of java.nio.Buffer.checkIndex | |
| 2250 int java_nio_Buffer::limit_offset() { | |
| 2251 return _limit_offset; | |
| 2252 } | |
| 2253 | |
| 2254 | |
| 2255 void java_nio_Buffer::compute_offsets() { | |
| 2256 klassOop k = SystemDictionary::java_nio_Buffer_klass(); | |
| 2257 COMPUTE_OFFSET("java.nio.Buffer", _limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature()); | |
| 2258 } | |
| 2259 | |
| 2260 // Support for intrinsification of sun.misc.AtomicLongCSImpl.attemptUpdate | |
| 2261 int sun_misc_AtomicLongCSImpl::value_offset() { | |
| 2262 assert(SystemDictionary::sun_misc_AtomicLongCSImpl_klass() != NULL, "can't call this"); | |
| 2263 return _value_offset; | |
| 2264 } | |
| 2265 | |
| 2266 | |
| 2267 void sun_misc_AtomicLongCSImpl::compute_offsets() { | |
| 2268 klassOop k = SystemDictionary::sun_misc_AtomicLongCSImpl_klass(); | |
| 2269 // If this class is not present, its value field offset won't be referenced. | |
| 2270 if (k != NULL) { | |
| 2271 COMPUTE_OFFSET("sun.misc.AtomicLongCSImpl", _value_offset, k, vmSymbols::value_name(), vmSymbols::long_signature()); | |
| 2272 } | |
| 2273 } | |
| 2274 | |
| 2275 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) { | |
| 2276 if (_owner_offset != 0) return; | |
| 2277 | |
| 2278 assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later"); | |
| 2279 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK); | |
| 2280 klassOop k = SystemDictionary::abstract_ownable_synchronizer_klass(); | |
| 2281 COMPUTE_OFFSET("java.util.concurrent.locks.AbstractOwnableSynchronizer", _owner_offset, k, | |
| 2282 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature()); | |
| 2283 } | |
| 2284 | |
| 2285 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) { | |
| 2286 assert(_owner_offset != 0, "Must be initialized"); | |
| 2287 return obj->obj_field(_owner_offset); | |
| 2288 } | |
| 2289 | |
| 2290 // Compute hard-coded offsets | |
| 2291 // Invoked before SystemDictionary::initialize, so pre-loaded classes | |
| 2292 // are not available to determine the offset_of_static_fields. | |
| 2293 void JavaClasses::compute_hard_coded_offsets() { | |
| 2294 const int x = wordSize; | |
| 2295 const int header = instanceOopDesc::header_size_in_bytes(); | |
| 2296 | |
| 2297 // Do the String Class | |
| 2298 java_lang_String::value_offset = java_lang_String::hc_value_offset * x + header; | |
| 2299 java_lang_String::offset_offset = java_lang_String::hc_offset_offset * x + header; | |
| 2300 java_lang_String::count_offset = java_lang_String::offset_offset + sizeof (jint); | |
| 2301 java_lang_String::hash_offset = java_lang_String::count_offset + sizeof (jint); | |
| 2302 | |
| 2303 // Do the Class Class | |
| 2304 java_lang_Class::klass_offset = java_lang_Class::hc_klass_offset * x + header; | |
| 2305 java_lang_Class::array_klass_offset = java_lang_Class::hc_array_klass_offset * x + header; | |
| 2306 java_lang_Class::resolved_constructor_offset = java_lang_Class::hc_resolved_constructor_offset * x + header; | |
| 2307 | |
| 2308 // This is NOT an offset | |
| 2309 java_lang_Class::number_of_fake_oop_fields = java_lang_Class::hc_number_of_fake_oop_fields; | |
| 2310 | |
| 2311 // Throwable Class | |
| 2312 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header; | |
| 2313 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header; | |
| 2314 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header; | |
| 2315 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header; | |
| 2316 | |
| 2317 // java_lang_boxing_object | |
| 2318 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset * x + header; | |
| 2319 | |
| 2320 // java_lang_ref_Reference: | |
| 2321 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header; | |
| 2322 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header; | |
| 2323 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header; | |
| 2324 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header; | |
| 2325 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x; | |
| 2326 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x; | |
| 2327 // Artificial fields for java_lang_ref_Reference | |
| 2328 // The first field is for the discovered field added in 1.4 | |
| 2329 java_lang_ref_Reference::number_of_fake_oop_fields = 1; | |
| 2330 | |
| 2331 // java_lang_ref_SoftReference Class | |
| 2332 java_lang_ref_SoftReference::timestamp_offset = java_lang_ref_SoftReference::hc_timestamp_offset * x + header; | |
| 2333 // Don't multiply static fields because they are always in wordSize units | |
| 2334 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x; | |
| 2335 | |
| 2336 // java_lang_ClassLoader | |
| 2337 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header; | |
| 2338 | |
| 2339 // java_lang_System | |
| 2340 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x; | |
| 2341 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x; | |
| 2342 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x; | |
| 2343 | |
| 2344 // java_lang_StackTraceElement | |
| 2345 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header; | |
| 2346 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header; | |
| 2347 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header; | |
| 2348 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header; | |
| 2349 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header; | |
| 2350 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header; | |
| 2351 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header; | |
| 2352 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header; | |
| 2353 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header; | |
| 2354 | |
| 2355 } | |
| 2356 | |
| 2357 | |
| 2358 // Compute non-hard-coded field offsets of all the classes in this file | |
| 2359 void JavaClasses::compute_offsets() { | |
| 2360 | |
| 2361 java_lang_Class::compute_offsets(); | |
| 2362 java_lang_System::compute_offsets(); | |
| 2363 java_lang_Thread::compute_offsets(); | |
| 2364 java_lang_ThreadGroup::compute_offsets(); | |
| 2365 java_security_AccessControlContext::compute_offsets(); | |
| 2366 // Initialize reflection classes. The layouts of these classes | |
| 2367 // changed with the new reflection implementation in JDK 1.4, and | |
| 2368 // since the Universe doesn't know what JDK version it is until this | |
| 2369 // point we defer computation of these offsets until now. | |
| 2370 java_lang_reflect_AccessibleObject::compute_offsets(); | |
| 2371 java_lang_reflect_Method::compute_offsets(); | |
| 2372 java_lang_reflect_Constructor::compute_offsets(); | |
| 2373 java_lang_reflect_Field::compute_offsets(); | |
| 2374 if (JDK_Version::is_gte_jdk14x_version()) { | |
| 2375 java_nio_Buffer::compute_offsets(); | |
| 2376 } | |
| 2377 if (JDK_Version::is_gte_jdk15x_version()) { | |
| 2378 sun_reflect_ConstantPool::compute_offsets(); | |
| 2379 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets(); | |
| 2380 } | |
| 2381 sun_misc_AtomicLongCSImpl::compute_offsets(); | |
| 2382 } | |
| 2383 | |
| 2384 #ifndef PRODUCT | |
| 2385 | |
| 2386 // These functions exist to assert the validity of hard-coded field offsets to guard | |
| 2387 // against changes in the class files | |
| 2388 | |
| 2389 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) { | |
| 2390 EXCEPTION_MARK; | |
| 2391 fieldDescriptor fd; | |
| 2392 symbolHandle klass_sym = oopFactory::new_symbol_handle(klass_name, CATCH); | |
| 2393 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); | |
| 2394 instanceKlassHandle h_klass (THREAD, k); | |
| 2395 //instanceKlassHandle h_klass(klass); | |
| 2396 symbolHandle f_name = oopFactory::new_symbol_handle(field_name, CATCH); | |
| 2397 symbolHandle f_sig = oopFactory::new_symbol_handle(field_sig, CATCH); | |
| 2398 if (!h_klass->find_local_field(f_name(), f_sig(), &fd)) { | |
| 2399 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name); | |
| 2400 return false; | |
| 2401 } | |
| 2402 if (fd.is_static()) { | |
| 2403 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name); | |
| 2404 return false; | |
| 2405 } | |
| 2406 if (fd.offset() == hardcoded_offset ) { | |
| 2407 return true; | |
| 2408 } else { | |
| 2409 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.", | |
| 2410 klass_name, field_name, hardcoded_offset, fd.offset()); | |
| 2411 return false; | |
| 2412 } | |
| 2413 } | |
| 2414 | |
| 2415 | |
| 2416 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) { | |
| 2417 EXCEPTION_MARK; | |
| 2418 fieldDescriptor fd; | |
| 2419 symbolHandle klass_sym = oopFactory::new_symbol_handle(klass_name, CATCH); | |
| 2420 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); | |
| 2421 instanceKlassHandle h_klass (THREAD, k); | |
| 2422 symbolHandle f_name = oopFactory::new_symbol_handle(field_name, CATCH); | |
| 2423 symbolHandle f_sig = oopFactory::new_symbol_handle(field_sig, CATCH); | |
| 2424 if (!h_klass->find_local_field(f_name(), f_sig(), &fd)) { | |
| 2425 tty->print_cr("Static field %s.%s not found", klass_name, field_name); | |
| 2426 return false; | |
| 2427 } | |
| 2428 if (!fd.is_static()) { | |
| 2429 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name); | |
| 2430 return false; | |
| 2431 } | |
| 2432 if (fd.offset() == hardcoded_offset + h_klass->offset_of_static_fields()) { | |
| 2433 return true; | |
| 2434 } else { | |
| 2435 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()); | |
| 2436 return false; | |
| 2437 } | |
| 2438 } | |
| 2439 | |
| 2440 | |
| 2441 // Check the hard-coded field offsets of all the classes in this file | |
| 2442 | |
| 2443 void JavaClasses::check_offsets() { | |
| 2444 bool valid = true; | |
| 2445 | |
| 2446 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ | |
| 2447 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig) | |
| 2448 | |
| 2449 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ | |
| 2450 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig) | |
| 2451 | |
| 2452 // java.lang.String | |
| 2453 | |
| 2454 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C"); | |
| 2455 CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I"); | |
| 2456 CHECK_OFFSET("java/lang/String", java_lang_String, count, "I"); | |
| 2457 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I"); | |
| 2458 | |
| 2459 // java.lang.Class | |
| 2460 | |
| 2461 // Fake fields | |
| 2462 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked | |
| 2463 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked | |
| 2464 // CHECK_OFFSET("java/lang/Class", java_lang_Class, resolved_constructor); // %%% this needs to be checked | |
| 2465 | |
| 2466 // java.lang.Throwable | |
| 2467 | |
| 2468 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;"); | |
| 2469 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;"); | |
| 2470 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;"); | |
| 2471 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;"); | |
| 2472 | |
| 2473 // Boxed primitive objects (java_lang_boxing_object) | |
| 2474 | |
| 2475 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z"); | |
| 2476 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C"); | |
| 2477 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F"); | |
| 2478 CHECK_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D"); | |
| 2479 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B"); | |
| 2480 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S"); | |
| 2481 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I"); | |
| 2482 CHECK_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J"); | |
| 2483 | |
| 2484 // java.lang.ClassLoader | |
| 2485 | |
| 2486 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;"); | |
| 2487 | |
| 2488 // java.lang.System | |
| 2489 | |
| 2490 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;"); | |
| 2491 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;"); | |
| 2492 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;"); | |
| 2493 | |
| 2494 // java.lang.StackTraceElement | |
| 2495 | |
| 2496 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;"); | |
| 2497 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;"); | |
| 2498 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;"); | |
| 2499 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I"); | |
| 2500 | |
| 2501 // java.lang.ref.Reference | |
| 2502 | |
| 2503 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;"); | |
| 2504 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;"); | |
| 2505 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;"); | |
| 2506 // Fake field | |
| 2507 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;"); | |
| 2508 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;"); | |
| 2509 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;"); | |
| 2510 | |
| 2511 // java.lang.ref.SoftReference | |
| 2512 | |
| 2513 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J"); | |
| 2514 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J"); | |
| 2515 | |
| 2516 // java.lang.AssertionStatusDirectives | |
| 2517 // | |
| 2518 // The CheckAssertionStatusDirectives boolean can be removed from here and | |
| 2519 // globals.hpp after the AssertionStatusDirectives class has been integrated | |
| 2520 // into merlin "for some time." Without it, the vm will fail with early | |
| 2521 // merlin builds. | |
| 2522 | |
| 2523 if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) { | |
| 2524 const char* nm = "java/lang/AssertionStatusDirectives"; | |
| 2525 const char* sig = "[Ljava/lang/String;"; | |
| 2526 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig); | |
| 2527 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z"); | |
| 2528 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig); | |
| 2529 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z"); | |
| 2530 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z"); | |
| 2531 } | |
| 2532 | |
| 2533 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed"); | |
| 2534 } | |
| 2535 | |
| 2536 #endif // PRODUCT | |
| 2537 | |
| 2538 void javaClasses_init() { | |
| 2539 JavaClasses::compute_offsets(); | |
| 2540 JavaClasses::check_offsets(); | |
| 2541 FilteredFieldsMap::initialize(); // must be done after computing offsets. | |
| 2542 } |