Mercurial > hg > truffle
annotate src/share/vm/classfile/javaClasses.cpp @ 196:d1605aabd0a1 jdk7-b30
6719955: Update copyright year
Summary: Update copyright year for files that have been modified in 2008
Reviewed-by: ohair, tbell
| author | xdono |
|---|---|
| date | Wed, 02 Jul 2008 12:55:16 -0700 |
| parents | 437d03ea40b1 |
| children | d95b224e9f17 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 196 | 2 * Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 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 | |
|
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28 // Helpful routine for computing field offsets at run time rather than hardcoding them |
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29 static void |
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30 compute_offset(int &dest_offset, |
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31 klassOop klass_oop, symbolOop name_symbol, symbolOop signature_symbol) { |
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32 fieldDescriptor fd; |
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33 instanceKlass* ik = instanceKlass::cast(klass_oop); |
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34 if (!ik->find_local_field(name_symbol, signature_symbol, &fd)) { |
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35 ResourceMark rm; |
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36 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string()); |
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37 fatal("Invalid layout of preloaded class"); |
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38 } |
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39 dest_offset = fd.offset(); |
| 0 | 40 } |
| 41 | |
| 42 // Same as above but for "optional" offsets that might not be present in certain JDK versions | |
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43 static void |
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44 compute_optional_offset(int& dest_offset, |
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45 klassOop klass_oop, symbolOop name_symbol, symbolOop signature_symbol) { |
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46 fieldDescriptor fd; |
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47 instanceKlass* ik = instanceKlass::cast(klass_oop); |
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48 if (ik->find_local_field(name_symbol, signature_symbol, &fd)) { |
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49 dest_offset = fd.offset(); |
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50 } |
| 0 | 51 } |
| 52 | |
| 53 Handle java_lang_String::basic_create(int length, bool tenured, TRAPS) { | |
| 54 // Create the String object first, so there's a chance that the String | |
| 55 // and the char array it points to end up in the same cache line. | |
| 56 oop obj; | |
| 57 if (tenured) { | |
| 58 obj = instanceKlass::cast(SystemDictionary::string_klass())->allocate_permanent_instance(CHECK_NH); | |
| 59 } else { | |
| 60 obj = instanceKlass::cast(SystemDictionary::string_klass())->allocate_instance(CHECK_NH); | |
| 61 } | |
| 62 | |
| 63 // Create the char array. The String object must be handlized here | |
| 64 // because GC can happen as a result of the allocation attempt. | |
| 65 Handle h_obj(THREAD, obj); | |
| 66 typeArrayOop buffer; | |
| 67 if (tenured) { | |
| 68 buffer = oopFactory::new_permanent_charArray(length, CHECK_NH); | |
| 69 } else { | |
| 70 buffer = oopFactory::new_charArray(length, CHECK_NH); | |
| 71 } | |
| 72 | |
| 73 // Point the String at the char array | |
| 74 obj = h_obj(); | |
| 75 set_value(obj, buffer); | |
| 76 // No need to zero the offset, allocation zero'ed the entire String object | |
| 77 assert(offset(obj) == 0, "initial String offset should be zero"); | |
| 78 //set_offset(obj, 0); | |
| 79 set_count(obj, length); | |
| 80 | |
| 81 return h_obj; | |
| 82 } | |
| 83 | |
| 84 Handle java_lang_String::basic_create_from_unicode(jchar* unicode, int length, bool tenured, TRAPS) { | |
| 85 Handle h_obj = basic_create(length, tenured, CHECK_NH); | |
| 86 typeArrayOop buffer = value(h_obj()); | |
| 87 for (int index = 0; index < length; index++) { | |
| 88 buffer->char_at_put(index, unicode[index]); | |
| 89 } | |
| 90 return h_obj; | |
| 91 } | |
| 92 | |
| 93 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) { | |
| 94 return basic_create_from_unicode(unicode, length, false, CHECK_NH); | |
| 95 } | |
| 96 | |
| 97 Handle java_lang_String::create_tenured_from_unicode(jchar* unicode, int length, TRAPS) { | |
| 98 return basic_create_from_unicode(unicode, length, true, CHECK_NH); | |
| 99 } | |
| 100 | |
| 101 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) { | |
| 102 Handle h_obj = basic_create_from_unicode(unicode, length, false, CHECK_0); | |
| 103 return h_obj(); | |
| 104 } | |
| 105 | |
| 106 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) { | |
| 107 if (utf8_str == NULL) { | |
| 108 return Handle(); | |
| 109 } | |
| 110 int length = UTF8::unicode_length(utf8_str); | |
| 111 Handle h_obj = basic_create(length, false, CHECK_NH); | |
| 112 if (length > 0) { | |
| 113 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length); | |
| 114 } | |
| 115 return h_obj; | |
| 116 } | |
| 117 | |
| 118 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) { | |
| 119 Handle h_obj = create_from_str(utf8_str, CHECK_0); | |
| 120 return h_obj(); | |
| 121 } | |
| 122 | |
| 123 Handle java_lang_String::create_from_symbol(symbolHandle symbol, TRAPS) { | |
| 124 int length = UTF8::unicode_length((char*)symbol->bytes(), symbol->utf8_length()); | |
| 125 Handle h_obj = basic_create(length, false, CHECK_NH); | |
| 126 if (length > 0) { | |
| 127 UTF8::convert_to_unicode((char*)symbol->bytes(), value(h_obj())->char_at_addr(0), length); | |
| 128 } | |
| 129 return h_obj; | |
| 130 } | |
| 131 | |
| 132 // Converts a C string to a Java String based on current encoding | |
| 133 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) { | |
| 134 assert(str != NULL, "bad arguments"); | |
| 135 | |
| 136 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *); | |
| 137 static to_java_string_fn_t _to_java_string_fn = NULL; | |
| 138 | |
| 139 if (_to_java_string_fn == NULL) { | |
| 140 void *lib_handle = os::native_java_library(); | |
| 141 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, hpi::dll_lookup(lib_handle, "NewStringPlatform")); | |
| 142 if (_to_java_string_fn == NULL) { | |
| 143 fatal("NewStringPlatform missing"); | |
| 144 } | |
| 145 } | |
| 146 | |
| 147 jstring js = NULL; | |
| 148 { JavaThread* thread = (JavaThread*)THREAD; | |
| 149 assert(thread->is_Java_thread(), "must be java thread"); | |
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150 HandleMark hm(thread); |
| 0 | 151 ThreadToNativeFromVM ttn(thread); |
| 152 js = (_to_java_string_fn)(thread->jni_environment(), str); | |
| 153 } | |
| 154 return Handle(THREAD, JNIHandles::resolve(js)); | |
| 155 } | |
| 156 | |
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157 // Converts a Java String to a native C string that can be used for |
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158 // native OS calls. |
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159 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) { |
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160 |
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161 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*); |
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162 static to_platform_string_fn_t _to_platform_string_fn = NULL; |
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163 |
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164 if (_to_platform_string_fn == NULL) { |
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165 void *lib_handle = os::native_java_library(); |
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166 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, hpi::dll_lookup(lib_handle, "GetStringPlatformChars")); |
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167 if (_to_platform_string_fn == NULL) { |
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168 fatal("GetStringPlatformChars missing"); |
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169 } |
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170 } |
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171 |
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172 char *native_platform_string; |
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173 { JavaThread* thread = (JavaThread*)THREAD; |
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174 assert(thread->is_Java_thread(), "must be java thread"); |
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175 JNIEnv *env = thread->jni_environment(); |
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176 jstring js = (jstring) JNIHandles::make_local(env, java_string()); |
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177 bool is_copy; |
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178 HandleMark hm(thread); |
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179 ThreadToNativeFromVM ttn(thread); |
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180 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy); |
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181 assert(is_copy == JNI_TRUE, "is_copy value changed"); |
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182 JNIHandles::destroy_local(js); |
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183 } |
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184 return native_platform_string; |
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185 } |
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186 |
| 0 | 187 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) { |
| 188 oop obj = java_string(); | |
| 189 // Typical usage is to convert all '/' to '.' in string. | |
| 190 typeArrayOop value = java_lang_String::value(obj); | |
| 191 int offset = java_lang_String::offset(obj); | |
| 192 int length = java_lang_String::length(obj); | |
| 193 | |
| 194 // First check if any from_char exist | |
| 195 int index; // Declared outside, used later | |
| 196 for (index = 0; index < length; index++) { | |
| 197 if (value->char_at(index + offset) == from_char) { | |
| 198 break; | |
| 199 } | |
| 200 } | |
| 201 if (index == length) { | |
| 202 // No from_char, so do not copy. | |
| 203 return java_string; | |
| 204 } | |
| 205 | |
| 206 // Create new UNICODE buffer. Must handlize value because GC | |
| 207 // may happen during String and char array creation. | |
| 208 typeArrayHandle h_value(THREAD, value); | |
| 209 Handle string = basic_create(length, false, CHECK_NH); | |
| 210 | |
| 211 typeArrayOop from_buffer = h_value(); | |
| 212 typeArrayOop to_buffer = java_lang_String::value(string()); | |
| 213 | |
| 214 // Copy contents | |
| 215 for (index = 0; index < length; index++) { | |
| 216 jchar c = from_buffer->char_at(index + offset); | |
| 217 if (c == from_char) { | |
| 218 c = to_char; | |
| 219 } | |
| 220 to_buffer->char_at_put(index, c); | |
| 221 } | |
| 222 return string; | |
| 223 } | |
| 224 | |
| 225 jchar* java_lang_String::as_unicode_string(oop java_string, int& length) { | |
| 226 typeArrayOop value = java_lang_String::value(java_string); | |
| 227 int offset = java_lang_String::offset(java_string); | |
| 228 length = java_lang_String::length(java_string); | |
| 229 | |
| 230 jchar* result = NEW_RESOURCE_ARRAY(jchar, length); | |
| 231 for (int index = 0; index < length; index++) { | |
| 232 result[index] = value->char_at(index + offset); | |
| 233 } | |
| 234 return result; | |
| 235 } | |
| 236 | |
| 237 symbolHandle java_lang_String::as_symbol(Handle java_string, TRAPS) { | |
| 238 oop obj = java_string(); | |
| 239 typeArrayOop value = java_lang_String::value(obj); | |
| 240 int offset = java_lang_String::offset(obj); | |
| 241 int length = java_lang_String::length(obj); | |
| 242 | |
| 243 ResourceMark rm(THREAD); | |
| 244 symbolHandle result; | |
| 245 | |
| 246 if (length > 0) { | |
| 247 int utf8_length = UNICODE::utf8_length(value->char_at_addr(offset), length); | |
| 248 char* chars = NEW_RESOURCE_ARRAY(char, utf8_length + 1); | |
| 249 UNICODE::convert_to_utf8(value->char_at_addr(offset), length, chars); | |
| 250 // Allocate the symbol | |
| 251 result = oopFactory::new_symbol_handle(chars, utf8_length, CHECK_(symbolHandle())); | |
| 252 } else { | |
| 253 result = oopFactory::new_symbol_handle("", 0, CHECK_(symbolHandle())); | |
| 254 } | |
| 255 return result; | |
| 256 } | |
| 257 | |
| 258 int java_lang_String::utf8_length(oop java_string) { | |
| 259 typeArrayOop value = java_lang_String::value(java_string); | |
| 260 int offset = java_lang_String::offset(java_string); | |
| 261 int length = java_lang_String::length(java_string); | |
| 262 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset); | |
| 263 return UNICODE::utf8_length(position, length); | |
| 264 } | |
| 265 | |
| 266 char* java_lang_String::as_utf8_string(oop java_string) { | |
| 267 typeArrayOop value = java_lang_String::value(java_string); | |
| 268 int offset = java_lang_String::offset(java_string); | |
| 269 int length = java_lang_String::length(java_string); | |
| 270 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset); | |
| 271 return UNICODE::as_utf8(position, length); | |
| 272 } | |
| 273 | |
| 274 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) { | |
| 275 typeArrayOop value = java_lang_String::value(java_string); | |
| 276 int offset = java_lang_String::offset(java_string); | |
| 277 int length = java_lang_String::length(java_string); | |
| 278 assert(start + len <= length, "just checking"); | |
| 279 jchar* position = value->char_at_addr(offset + start); | |
| 280 return UNICODE::as_utf8(position, len); | |
| 281 } | |
| 282 | |
| 283 bool java_lang_String::equals(oop java_string, jchar* chars, int len) { | |
| 284 assert(SharedSkipVerify || | |
| 285 java_string->klass() == SystemDictionary::string_klass(), | |
| 286 "must be java_string"); | |
| 287 typeArrayOop value = java_lang_String::value(java_string); | |
| 288 int offset = java_lang_String::offset(java_string); | |
| 289 int length = java_lang_String::length(java_string); | |
| 290 if (length != len) { | |
| 291 return false; | |
| 292 } | |
| 293 for (int i = 0; i < len; i++) { | |
| 294 if (value->char_at(i + offset) != chars[i]) { | |
| 295 return false; | |
| 296 } | |
| 297 } | |
| 298 return true; | |
| 299 } | |
| 300 | |
| 301 void java_lang_String::print(Handle java_string, outputStream* st) { | |
| 302 oop obj = java_string(); | |
| 303 assert(obj->klass() == SystemDictionary::string_klass(), "must be java_string"); | |
| 304 typeArrayOop value = java_lang_String::value(obj); | |
| 305 int offset = java_lang_String::offset(obj); | |
| 306 int length = java_lang_String::length(obj); | |
| 307 | |
| 308 int end = MIN2(length, 100); | |
| 309 if (value == NULL) { | |
| 310 // This can happen if, e.g., printing a String | |
| 311 // object before its initializer has been called | |
| 312 st->print_cr("NULL"); | |
| 313 } else { | |
| 314 st->print("\""); | |
| 315 for (int index = 0; index < length; index++) { | |
| 316 st->print("%c", value->char_at(index + offset)); | |
| 317 } | |
| 318 st->print("\""); | |
| 319 } | |
| 320 } | |
| 321 | |
| 322 | |
| 323 oop java_lang_Class::create_mirror(KlassHandle k, TRAPS) { | |
| 324 assert(k->java_mirror() == NULL, "should only assign mirror once"); | |
| 325 // Use this moment of initialization to cache modifier_flags also, | |
| 326 // to support Class.getModifiers(). Instance classes recalculate | |
| 327 // the cached flags after the class file is parsed, but before the | |
| 328 // class is put into the system dictionary. | |
| 329 int computed_modifiers = k->compute_modifier_flags(CHECK_0); | |
| 330 k->set_modifier_flags(computed_modifiers); | |
| 331 if (SystemDictionary::class_klass_loaded()) { | |
| 332 // Allocate mirror (java.lang.Class instance) | |
| 333 Handle mirror = instanceKlass::cast(SystemDictionary::class_klass())->allocate_permanent_instance(CHECK_0); | |
| 334 // Setup indirections | |
| 335 mirror->obj_field_put(klass_offset, k()); | |
| 336 k->set_java_mirror(mirror()); | |
| 337 // It might also have a component mirror. This mirror must already exist. | |
| 338 if (k->oop_is_javaArray()) { | |
| 339 Handle comp_mirror; | |
| 340 if (k->oop_is_typeArray()) { | |
| 341 BasicType type = typeArrayKlass::cast(k->as_klassOop())->element_type(); | |
| 342 comp_mirror = Universe::java_mirror(type); | |
| 343 assert(comp_mirror.not_null(), "must have primitive mirror"); | |
| 344 } else if (k->oop_is_objArray()) { | |
| 345 klassOop element_klass = objArrayKlass::cast(k->as_klassOop())->element_klass(); | |
| 346 if (element_klass != NULL | |
| 347 && (Klass::cast(element_klass)->oop_is_instance() || | |
| 348 Klass::cast(element_klass)->oop_is_javaArray())) { | |
| 349 comp_mirror = Klass::cast(element_klass)->java_mirror(); | |
| 350 assert(comp_mirror.not_null(), "must have element mirror"); | |
| 351 } | |
| 352 // else some object array internal to the VM, like systemObjArrayKlassObj | |
| 353 } | |
| 354 if (comp_mirror.not_null()) { | |
| 355 // Two-way link between the array klass and its component mirror: | |
| 356 arrayKlass::cast(k->as_klassOop())->set_component_mirror(comp_mirror()); | |
| 357 set_array_klass(comp_mirror(), k->as_klassOop()); | |
| 358 } | |
| 359 } | |
| 360 return mirror(); | |
| 361 } else { | |
| 362 return NULL; | |
| 363 } | |
| 364 } | |
| 365 | |
| 366 | |
| 367 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) { | |
| 368 // This should be improved by adding a field at the Java level or by | |
| 369 // introducing a new VM klass (see comment in ClassFileParser) | |
| 370 oop java_class = instanceKlass::cast(SystemDictionary::class_klass())->allocate_permanent_instance(CHECK_0); | |
| 371 if (type != T_VOID) { | |
| 372 klassOop aklass = Universe::typeArrayKlassObj(type); | |
| 373 assert(aklass != NULL, "correct bootstrap"); | |
| 374 set_array_klass(java_class, aklass); | |
| 375 } | |
| 376 return java_class; | |
| 377 } | |
| 378 | |
| 379 | |
| 380 klassOop java_lang_Class::as_klassOop(oop java_class) { | |
| 381 //%note memory_2 | |
| 382 klassOop k = klassOop(java_class->obj_field(klass_offset)); | |
| 383 assert(k == NULL || k->is_klass(), "type check"); | |
| 384 return k; | |
| 385 } | |
| 386 | |
| 387 | |
| 388 klassOop java_lang_Class::array_klass(oop java_class) { | |
| 389 klassOop k = klassOop(java_class->obj_field(array_klass_offset)); | |
| 390 assert(k == NULL || k->is_klass() && Klass::cast(k)->oop_is_javaArray(), "should be array klass"); | |
| 391 return k; | |
| 392 } | |
| 393 | |
| 394 | |
| 395 void java_lang_Class::set_array_klass(oop java_class, klassOop klass) { | |
| 396 assert(klass->is_klass() && Klass::cast(klass)->oop_is_javaArray(), "should be array klass"); | |
| 397 java_class->obj_field_put(array_klass_offset, klass); | |
| 398 } | |
| 399 | |
| 400 | |
| 401 methodOop java_lang_Class::resolved_constructor(oop java_class) { | |
| 402 oop constructor = java_class->obj_field(resolved_constructor_offset); | |
| 403 assert(constructor == NULL || constructor->is_method(), "should be method"); | |
| 404 return methodOop(constructor); | |
| 405 } | |
| 406 | |
| 407 | |
| 408 void java_lang_Class::set_resolved_constructor(oop java_class, methodOop constructor) { | |
| 409 assert(constructor->is_method(), "should be method"); | |
| 410 java_class->obj_field_put(resolved_constructor_offset, constructor); | |
| 411 } | |
| 412 | |
| 413 | |
| 414 bool java_lang_Class::is_primitive(oop java_class) { | |
| 415 klassOop k = klassOop(java_class->obj_field(klass_offset)); | |
| 416 return k == NULL; | |
| 417 } | |
| 418 | |
| 419 | |
| 420 BasicType java_lang_Class::primitive_type(oop java_class) { | |
| 421 assert(java_lang_Class::is_primitive(java_class), "just checking"); | |
| 422 klassOop ak = klassOop(java_class->obj_field(array_klass_offset)); | |
| 423 BasicType type = T_VOID; | |
| 424 if (ak != NULL) { | |
| 425 // Note: create_basic_type_mirror above initializes ak to a non-null value. | |
| 426 type = arrayKlass::cast(ak)->element_type(); | |
| 427 } else { | |
| 428 assert(java_class == Universe::void_mirror(), "only valid non-array primitive"); | |
| 429 } | |
| 430 assert(Universe::java_mirror(type) == java_class, "must be consistent"); | |
| 431 return type; | |
| 432 } | |
| 433 | |
| 434 | |
| 435 oop java_lang_Class::primitive_mirror(BasicType t) { | |
| 436 oop mirror = Universe::java_mirror(t); | |
| 437 assert(mirror != NULL && mirror->is_a(SystemDictionary::class_klass()), "must be a Class"); | |
| 438 assert(java_lang_Class::is_primitive(mirror), "must be primitive"); | |
| 439 return mirror; | |
| 440 } | |
| 441 | |
| 442 bool java_lang_Class::offsets_computed = false; | |
| 443 int java_lang_Class::classRedefinedCount_offset = -1; | |
| 444 | |
| 445 void java_lang_Class::compute_offsets() { | |
| 446 assert(!offsets_computed, "offsets should be initialized only once"); | |
| 447 offsets_computed = true; | |
| 448 | |
| 449 klassOop k = SystemDictionary::class_klass(); | |
| 450 // The classRedefinedCount field is only present starting in 1.5, | |
| 451 // so don't go fatal. | |
|
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452 compute_optional_offset(classRedefinedCount_offset, |
| 0 | 453 k, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature()); |
| 454 } | |
| 455 | |
| 456 int java_lang_Class::classRedefinedCount(oop the_class_mirror) { | |
| 457 if (!JDK_Version::is_gte_jdk15x_version() | |
| 458 || classRedefinedCount_offset == -1) { | |
| 459 // The classRedefinedCount field is only present starting in 1.5. | |
| 460 // If we don't have an offset for it then just return -1 as a marker. | |
| 461 return -1; | |
| 462 } | |
| 463 | |
| 464 return the_class_mirror->int_field(classRedefinedCount_offset); | |
| 465 } | |
| 466 | |
| 467 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) { | |
| 468 if (!JDK_Version::is_gte_jdk15x_version() | |
| 469 || classRedefinedCount_offset == -1) { | |
| 470 // The classRedefinedCount field is only present starting in 1.5. | |
| 471 // If we don't have an offset for it then nothing to set. | |
| 472 return; | |
| 473 } | |
| 474 | |
| 475 the_class_mirror->int_field_put(classRedefinedCount_offset, value); | |
| 476 } | |
| 477 | |
| 478 | |
| 479 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the | |
| 480 // platform thread structure, and a eetop offset which was used for thread | |
| 481 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures | |
| 482 // merged, so in the HotSpot VM we just use the eetop field for the thread | |
| 483 // instead of the privateInfo_offset. | |
| 484 // | |
| 485 // Note: The stackSize field is only present starting in 1.4. | |
| 486 | |
| 487 int java_lang_Thread::_name_offset = 0; | |
| 488 int java_lang_Thread::_group_offset = 0; | |
| 489 int java_lang_Thread::_contextClassLoader_offset = 0; | |
| 490 int java_lang_Thread::_inheritedAccessControlContext_offset = 0; | |
| 491 int java_lang_Thread::_priority_offset = 0; | |
| 492 int java_lang_Thread::_eetop_offset = 0; | |
| 493 int java_lang_Thread::_daemon_offset = 0; | |
| 494 int java_lang_Thread::_stillborn_offset = 0; | |
| 495 int java_lang_Thread::_stackSize_offset = 0; | |
| 496 int java_lang_Thread::_tid_offset = 0; | |
| 497 int java_lang_Thread::_thread_status_offset = 0; | |
| 498 int java_lang_Thread::_park_blocker_offset = 0; | |
| 499 int java_lang_Thread::_park_event_offset = 0 ; | |
| 500 | |
| 501 | |
| 502 void java_lang_Thread::compute_offsets() { | |
| 503 assert(_group_offset == 0, "offsets should be initialized only once"); | |
| 504 | |
| 505 klassOop k = SystemDictionary::thread_klass(); | |
|
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506 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::char_array_signature()); |
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507 compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature()); |
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508 compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature()); |
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509 compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature()); |
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510 compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature()); |
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511 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature()); |
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512 compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature()); |
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513 compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature()); |
| 0 | 514 // The stackSize field is only present starting in 1.4, so don't go fatal. |
|
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515 compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature()); |
| 0 | 516 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal. |
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517 compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature()); |
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518 compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature()); |
| 0 | 519 // The parkBlocker field is only present starting in 1.6, so don't go fatal. |
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520 compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature()); |
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521 compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(), |
| 0 | 522 vmSymbols::long_signature()); |
| 523 } | |
| 524 | |
| 525 | |
| 526 JavaThread* java_lang_Thread::thread(oop java_thread) { | |
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527 return (JavaThread*)java_thread->address_field(_eetop_offset); |
| 0 | 528 } |
| 529 | |
| 530 | |
| 531 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) { | |
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532 java_thread->address_field_put(_eetop_offset, (address)thread); |
| 0 | 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 | |
|
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766 compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature()); |
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767 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); |
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768 compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature()); |
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769 compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature()); |
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770 compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature()); |
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771 compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature()); |
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772 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature()); |
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773 compute_offset(_vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature()); |
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774 compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature()); |
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775 compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature()); |
| 0 | 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 | |
|
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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"); | |
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1041 bs->write_ref_array(MemRegion((HeapWord*)_methods->base(), |
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1042 _methods->array_size())); |
| 0 | 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 | |
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1086 _methods->obj_at_put(_index, method); |
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1087 // bad for UseCompressedOops |
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1088 // *_methods->obj_at_addr(_index) = method; |
| 0 | 1089 _bcis->ushort_at_put(_index, bci); |
| 1090 _index++; | |
| 1091 _dirty = true; | |
| 1092 } | |
| 1093 | |
| 1094 methodOop current_method() { | |
| 1095 assert(_index >= 0 && _index < trace_chunk_size, "out of range"); | |
| 1096 return methodOop(_methods->obj_at(_index)); | |
| 1097 } | |
| 1098 | |
| 1099 jushort current_bci() { | |
| 1100 assert(_index >= 0 && _index < trace_chunk_size, "out of range"); | |
| 1101 return _bcis->ushort_at(_index); | |
| 1102 } | |
| 1103 }; | |
| 1104 | |
| 1105 | |
| 1106 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, TRAPS) { | |
| 1107 if (!StackTraceInThrowable) return; | |
| 1108 ResourceMark rm(THREAD); | |
| 1109 | |
| 1110 // Start out by clearing the backtrace for this object, in case the VM | |
| 1111 // runs out of memory while allocating the stack trace | |
| 1112 set_backtrace(throwable(), NULL); | |
| 1113 if (JDK_Version::is_gte_jdk14x_version()) { | |
| 1114 // New since 1.4, clear lazily constructed Java level stacktrace if | |
| 1115 // refilling occurs | |
| 1116 clear_stacktrace(throwable()); | |
| 1117 } | |
| 1118 | |
| 1119 int max_depth = MaxJavaStackTraceDepth; | |
| 1120 JavaThread* thread = (JavaThread*)THREAD; | |
| 1121 BacktraceBuilder bt(CHECK); | |
| 1122 | |
| 1123 // Instead of using vframe directly, this version of fill_in_stack_trace | |
| 1124 // basically handles everything by hand. This significantly improved the | |
| 1125 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows. | |
| 1126 // See bug 6333838 for more details. | |
| 1127 // The "ASSERT" here is to verify this method generates the exactly same stack | |
| 1128 // trace as utilizing vframe. | |
| 1129 #ifdef ASSERT | |
| 1130 vframeStream st(thread); | |
| 1131 methodHandle st_method(THREAD, st.method()); | |
| 1132 #endif | |
| 1133 int total_count = 0; | |
| 1134 RegisterMap map(thread, false); | |
| 1135 int decode_offset = 0; | |
| 1136 nmethod* nm = NULL; | |
| 1137 bool skip_fillInStackTrace_check = false; | |
| 1138 bool skip_throwableInit_check = false; | |
| 1139 | |
| 1140 for (frame fr = thread->last_frame(); max_depth != total_count;) { | |
| 1141 methodOop method = NULL; | |
| 1142 int bci = 0; | |
| 1143 | |
| 1144 // Compiled java method case. | |
| 1145 if (decode_offset != 0) { | |
| 1146 DebugInfoReadStream stream(nm, decode_offset); | |
| 1147 decode_offset = stream.read_int(); | |
| 1148 method = (methodOop)nm->oop_at(stream.read_int()); | |
| 1149 bci = stream.read_bci(); | |
| 1150 } else { | |
| 1151 if (fr.is_first_frame()) break; | |
| 1152 address pc = fr.pc(); | |
| 1153 if (fr.is_interpreted_frame()) { | |
| 1154 intptr_t bcx = fr.interpreter_frame_bcx(); | |
| 1155 method = fr.interpreter_frame_method(); | |
| 1156 bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx); | |
| 1157 fr = fr.sender(&map); | |
| 1158 } else { | |
| 1159 CodeBlob* cb = fr.cb(); | |
| 1160 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL | |
| 1161 // but non nmethod | |
| 1162 fr = fr.sender(&map); | |
| 1163 if (cb == NULL || !cb->is_nmethod()) { | |
| 1164 continue; | |
| 1165 } | |
| 1166 nm = (nmethod*)cb; | |
| 1167 if (nm->method()->is_native()) { | |
| 1168 method = nm->method(); | |
| 1169 bci = 0; | |
| 1170 } else { | |
| 1171 PcDesc* pd = nm->pc_desc_at(pc); | |
| 1172 decode_offset = pd->scope_decode_offset(); | |
| 1173 // if decode_offset is not equal to 0, it will execute the | |
| 1174 // "compiled java method case" at the beginning of the loop. | |
| 1175 continue; | |
| 1176 } | |
| 1177 } | |
| 1178 } | |
| 1179 #ifdef ASSERT | |
| 1180 assert(st_method() == method && st.bci() == bci, | |
| 1181 "Wrong stack trace"); | |
| 1182 st.next(); | |
| 1183 // vframeStream::method isn't GC-safe so store off a copy | |
| 1184 // of the methodOop in case we GC. | |
| 1185 if (!st.at_end()) { | |
| 1186 st_method = st.method(); | |
| 1187 } | |
| 1188 #endif | |
| 1189 if (!skip_fillInStackTrace_check) { | |
| 1190 // check "fillInStackTrace" only once, so we negate the flag | |
| 1191 // after the first time check. | |
| 1192 skip_fillInStackTrace_check = true; | |
| 1193 if (method->name() == vmSymbols::fillInStackTrace_name()) { | |
| 1194 continue; | |
| 1195 } | |
| 1196 } | |
| 1197 // skip <init> methods of the exceptions klass. If there is <init> methods | |
| 1198 // that belongs to a superclass of the exception we are going to skipping | |
| 1199 // them in stack trace. This is simlar to classic VM. | |
| 1200 if (!skip_throwableInit_check) { | |
| 1201 if (method->name() == vmSymbols::object_initializer_name() && | |
| 1202 throwable->is_a(method->method_holder())) { | |
| 1203 continue; | |
| 1204 } else { | |
| 1205 // if no "Throwable.init()" method found, we stop checking it next time. | |
| 1206 skip_throwableInit_check = true; | |
| 1207 } | |
| 1208 } | |
| 1209 bt.push(method, bci, CHECK); | |
| 1210 total_count++; | |
| 1211 } | |
| 1212 | |
| 1213 // Put completed stack trace into throwable object | |
| 1214 set_backtrace(throwable(), bt.backtrace()); | |
| 1215 } | |
| 1216 | |
| 1217 void java_lang_Throwable::fill_in_stack_trace(Handle throwable) { | |
| 1218 // No-op if stack trace is disabled | |
| 1219 if (!StackTraceInThrowable) { | |
| 1220 return; | |
| 1221 } | |
| 1222 | |
| 1223 // Disable stack traces for some preallocated out of memory errors | |
| 1224 if (!Universe::should_fill_in_stack_trace(throwable)) { | |
| 1225 return; | |
| 1226 } | |
| 1227 | |
| 1228 PRESERVE_EXCEPTION_MARK; | |
| 1229 | |
| 1230 JavaThread* thread = JavaThread::active(); | |
| 1231 fill_in_stack_trace(throwable, thread); | |
| 1232 // ignore exceptions thrown during stack trace filling | |
| 1233 CLEAR_PENDING_EXCEPTION; | |
| 1234 } | |
| 1235 | |
| 1236 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) { | |
| 1237 // Allocate stack trace - backtrace is created but not filled in | |
| 1238 | |
| 1239 // No-op if stack trace is disabled | |
| 1240 if (!StackTraceInThrowable) return; | |
| 1241 | |
| 1242 objArrayOop h_oop = oopFactory::new_objectArray(trace_size, CHECK); | |
| 1243 objArrayHandle backtrace (THREAD, h_oop); | |
| 1244 objArrayOop m_oop = oopFactory::new_objectArray(trace_chunk_size, CHECK); | |
| 1245 objArrayHandle methods (THREAD, m_oop); | |
| 1246 typeArrayOop b = oopFactory::new_shortArray(trace_chunk_size, CHECK); | |
| 1247 typeArrayHandle bcis(THREAD, b); | |
| 1248 | |
| 1249 // backtrace has space for one chunk (next is NULL) | |
| 1250 backtrace->obj_at_put(trace_methods_offset, methods()); | |
| 1251 backtrace->obj_at_put(trace_bcis_offset, bcis()); | |
| 1252 set_backtrace(throwable(), backtrace()); | |
| 1253 } | |
| 1254 | |
| 1255 | |
| 1256 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) { | |
| 1257 // Fill in stack trace into preallocated backtrace (no GC) | |
| 1258 | |
| 1259 // No-op if stack trace is disabled | |
| 1260 if (!StackTraceInThrowable) return; | |
| 1261 | |
| 1262 assert(throwable->is_a(SystemDictionary::throwable_klass()), "sanity check"); | |
| 1263 | |
| 1264 oop backtrace = java_lang_Throwable::backtrace(throwable()); | |
| 1265 assert(backtrace != NULL, "backtrace not preallocated"); | |
| 1266 | |
| 1267 oop m = objArrayOop(backtrace)->obj_at(trace_methods_offset); | |
| 1268 objArrayOop methods = objArrayOop(m); | |
| 1269 assert(methods != NULL && methods->length() > 0, "method array not preallocated"); | |
| 1270 | |
| 1271 oop b = objArrayOop(backtrace)->obj_at(trace_bcis_offset); | |
| 1272 typeArrayOop bcis = typeArrayOop(b); | |
| 1273 assert(bcis != NULL, "bci array not preallocated"); | |
| 1274 | |
| 1275 assert(methods->length() == bcis->length(), "method and bci arrays should match"); | |
| 1276 | |
| 1277 JavaThread* thread = JavaThread::current(); | |
| 1278 ResourceMark rm(thread); | |
| 1279 vframeStream st(thread); | |
| 1280 | |
| 1281 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init | |
| 1282 // methods as preallocated errors aren't created by "java" code. | |
| 1283 | |
| 1284 // fill in as much stack trace as possible | |
| 1285 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth); | |
| 1286 int chunk_count = 0; | |
| 1287 | |
| 1288 for (;!st.at_end(); st.next()) { | |
| 1289 // add element | |
| 1290 bcis->ushort_at_put(chunk_count, st.bci()); | |
| 1291 methods->obj_at_put(chunk_count, st.method()); | |
| 1292 | |
| 1293 chunk_count++; | |
| 1294 | |
| 1295 // Bail-out for deep stacks | |
| 1296 if (chunk_count >= max_chunks) break; | |
| 1297 } | |
| 1298 } | |
| 1299 | |
| 1300 | |
| 1301 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) { | |
| 1302 if (throwable == NULL) { | |
| 1303 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 1304 } | |
| 1305 objArrayOop chunk = objArrayOop(backtrace(throwable)); | |
| 1306 int depth = 0; | |
| 1307 if (chunk != NULL) { | |
| 1308 // Iterate over chunks and count full ones | |
| 1309 while (true) { | |
| 1310 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset)); | |
| 1311 if (next == NULL) break; | |
| 1312 depth += trace_chunk_size; | |
| 1313 chunk = next; | |
| 1314 } | |
| 1315 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check"); | |
| 1316 // Count element in remaining partial chunk | |
| 1317 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset)); | |
| 1318 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset)); | |
| 1319 assert(methods != NULL && bcis != NULL, "sanity check"); | |
| 1320 for (int i = 0; i < methods->length(); i++) { | |
| 1321 if (methods->obj_at(i) == NULL) break; | |
| 1322 depth++; | |
| 1323 } | |
| 1324 } | |
| 1325 return depth; | |
| 1326 } | |
| 1327 | |
| 1328 | |
| 1329 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) { | |
| 1330 if (throwable == NULL) { | |
| 1331 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 1332 } | |
| 1333 if (index < 0) { | |
| 1334 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); | |
| 1335 } | |
| 1336 // Compute how many chunks to skip and index into actual chunk | |
| 1337 objArrayOop chunk = objArrayOop(backtrace(throwable)); | |
| 1338 int skip_chunks = index / trace_chunk_size; | |
| 1339 int chunk_index = index % trace_chunk_size; | |
| 1340 while (chunk != NULL && skip_chunks > 0) { | |
| 1341 chunk = objArrayOop(chunk->obj_at(trace_next_offset)); | |
| 1342 skip_chunks--; | |
| 1343 } | |
| 1344 if (chunk == NULL) { | |
| 1345 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); | |
| 1346 } | |
| 1347 // Get method,bci from chunk | |
| 1348 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset)); | |
| 1349 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset)); | |
| 1350 assert(methods != NULL && bcis != NULL, "sanity check"); | |
| 1351 methodHandle method(THREAD, methodOop(methods->obj_at(chunk_index))); | |
| 1352 int bci = bcis->ushort_at(chunk_index); | |
| 1353 // Chunk can be partial full | |
| 1354 if (method.is_null()) { | |
| 1355 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); | |
| 1356 } | |
| 1357 | |
| 1358 oop element = java_lang_StackTraceElement::create(method, bci, CHECK_0); | |
| 1359 return element; | |
| 1360 } | |
| 1361 | |
| 1362 oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) { | |
| 1363 // SystemDictionary::stackTraceElement_klass() will be null for pre-1.4 JDKs | |
| 1364 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4"); | |
| 1365 | |
| 1366 // Allocate java.lang.StackTraceElement instance | |
| 1367 klassOop k = SystemDictionary::stackTraceElement_klass(); | |
|
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1368 assert(k != NULL, "must be loaded in 1.4+"); |
| 0 | 1369 instanceKlassHandle ik (THREAD, k); |
| 1370 if (ik->should_be_initialized()) { | |
| 1371 ik->initialize(CHECK_0); | |
| 1372 } | |
| 1373 | |
| 1374 Handle element = ik->allocate_instance_handle(CHECK_0); | |
| 1375 // Fill in class name | |
| 1376 ResourceMark rm(THREAD); | |
| 1377 const char* str = instanceKlass::cast(method->method_holder())->external_name(); | |
| 1378 oop classname = StringTable::intern((char*) str, CHECK_0); | |
| 1379 java_lang_StackTraceElement::set_declaringClass(element(), classname); | |
| 1380 // Fill in method name | |
| 1381 oop methodname = StringTable::intern(method->name(), CHECK_0); | |
| 1382 java_lang_StackTraceElement::set_methodName(element(), methodname); | |
| 1383 // Fill in source file name | |
| 1384 symbolOop source = instanceKlass::cast(method->method_holder())->source_file_name(); | |
| 1385 oop filename = StringTable::intern(source, CHECK_0); | |
| 1386 java_lang_StackTraceElement::set_fileName(element(), filename); | |
| 1387 // File in source line number | |
| 1388 int line_number; | |
| 1389 if (method->is_native()) { | |
| 1390 // Negative value different from -1 below, enabling Java code in | |
| 1391 // class java.lang.StackTraceElement to distinguish "native" from | |
| 1392 // "no LineNumberTable". | |
| 1393 line_number = -2; | |
| 1394 } else { | |
| 1395 // Returns -1 if no LineNumberTable, and otherwise actual line number | |
| 1396 line_number = method->line_number_from_bci(bci); | |
| 1397 } | |
| 1398 java_lang_StackTraceElement::set_lineNumber(element(), line_number); | |
| 1399 | |
| 1400 return element(); | |
| 1401 } | |
| 1402 | |
| 1403 | |
| 1404 void java_lang_reflect_AccessibleObject::compute_offsets() { | |
| 1405 klassOop k = SystemDictionary::reflect_accessible_object_klass(); | |
|
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1406 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature()); |
| 0 | 1407 } |
| 1408 | |
| 1409 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) { | |
| 1410 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1411 return (jboolean) reflect->bool_field(override_offset); | |
| 1412 } | |
| 1413 | |
| 1414 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) { | |
| 1415 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1416 reflect->bool_field_put(override_offset, (int) value); | |
| 1417 } | |
| 1418 | |
| 1419 void java_lang_reflect_Method::compute_offsets() { | |
| 1420 klassOop k = SystemDictionary::reflect_method_klass(); | |
|
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1421 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); |
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1422 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); |
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1423 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature()); |
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1424 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature()); |
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1425 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature()); |
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1426 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); |
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1427 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); |
| 0 | 1428 // The generic signature and annotations fields are only present in 1.5 |
| 1429 signature_offset = -1; | |
| 1430 annotations_offset = -1; | |
| 1431 parameter_annotations_offset = -1; | |
| 1432 annotation_default_offset = -1; | |
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1433 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); |
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1434 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); |
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1435 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature()); |
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1436 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature()); |
| 0 | 1437 } |
| 1438 | |
| 1439 Handle java_lang_reflect_Method::create(TRAPS) { | |
| 1440 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1441 klassOop klass = SystemDictionary::reflect_method_klass(); | |
| 1442 // This class is eagerly initialized during VM initialization, since we keep a refence | |
| 1443 // to one of the methods | |
| 1444 assert(instanceKlass::cast(klass)->is_initialized(), "must be initialized"); | |
| 1445 return instanceKlass::cast(klass)->allocate_instance_handle(CHECK_NH); | |
| 1446 } | |
| 1447 | |
| 1448 oop java_lang_reflect_Method::clazz(oop reflect) { | |
| 1449 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1450 return reflect->obj_field(clazz_offset); | |
| 1451 } | |
| 1452 | |
| 1453 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) { | |
| 1454 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1455 reflect->obj_field_put(clazz_offset, value); | |
| 1456 } | |
| 1457 | |
| 1458 int java_lang_reflect_Method::slot(oop reflect) { | |
| 1459 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1460 return reflect->int_field(slot_offset); | |
| 1461 } | |
| 1462 | |
| 1463 void java_lang_reflect_Method::set_slot(oop reflect, int value) { | |
| 1464 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1465 reflect->int_field_put(slot_offset, value); | |
| 1466 } | |
| 1467 | |
| 1468 oop java_lang_reflect_Method::name(oop method) { | |
| 1469 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1470 return method->obj_field(name_offset); | |
| 1471 } | |
| 1472 | |
| 1473 void java_lang_reflect_Method::set_name(oop method, oop value) { | |
| 1474 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1475 method->obj_field_put(name_offset, value); | |
| 1476 } | |
| 1477 | |
| 1478 oop java_lang_reflect_Method::return_type(oop method) { | |
| 1479 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1480 return method->obj_field(returnType_offset); | |
| 1481 } | |
| 1482 | |
| 1483 void java_lang_reflect_Method::set_return_type(oop method, oop value) { | |
| 1484 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1485 method->obj_field_put(returnType_offset, value); | |
| 1486 } | |
| 1487 | |
| 1488 oop java_lang_reflect_Method::parameter_types(oop method) { | |
| 1489 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1490 return method->obj_field(parameterTypes_offset); | |
| 1491 } | |
| 1492 | |
| 1493 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) { | |
| 1494 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1495 method->obj_field_put(parameterTypes_offset, value); | |
| 1496 } | |
| 1497 | |
| 1498 oop java_lang_reflect_Method::exception_types(oop method) { | |
| 1499 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1500 return method->obj_field(exceptionTypes_offset); | |
| 1501 } | |
| 1502 | |
| 1503 void java_lang_reflect_Method::set_exception_types(oop method, oop value) { | |
| 1504 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1505 method->obj_field_put(exceptionTypes_offset, value); | |
| 1506 } | |
| 1507 | |
| 1508 int java_lang_reflect_Method::modifiers(oop method) { | |
| 1509 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1510 return method->int_field(modifiers_offset); | |
| 1511 } | |
| 1512 | |
| 1513 void java_lang_reflect_Method::set_modifiers(oop method, int value) { | |
| 1514 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1515 method->int_field_put(modifiers_offset, value); | |
| 1516 } | |
| 1517 | |
| 1518 bool java_lang_reflect_Method::has_signature_field() { | |
| 1519 return (signature_offset >= 0); | |
| 1520 } | |
| 1521 | |
| 1522 oop java_lang_reflect_Method::signature(oop method) { | |
| 1523 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1524 assert(has_signature_field(), "signature field must be present"); | |
| 1525 return method->obj_field(signature_offset); | |
| 1526 } | |
| 1527 | |
| 1528 void java_lang_reflect_Method::set_signature(oop method, oop value) { | |
| 1529 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1530 assert(has_signature_field(), "signature field must be present"); | |
| 1531 method->obj_field_put(signature_offset, value); | |
| 1532 } | |
| 1533 | |
| 1534 bool java_lang_reflect_Method::has_annotations_field() { | |
| 1535 return (annotations_offset >= 0); | |
| 1536 } | |
| 1537 | |
| 1538 oop java_lang_reflect_Method::annotations(oop method) { | |
| 1539 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1540 assert(has_annotations_field(), "annotations field must be present"); | |
| 1541 return method->obj_field(annotations_offset); | |
| 1542 } | |
| 1543 | |
| 1544 void java_lang_reflect_Method::set_annotations(oop method, oop value) { | |
| 1545 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1546 assert(has_annotations_field(), "annotations field must be present"); | |
| 1547 method->obj_field_put(annotations_offset, value); | |
| 1548 } | |
| 1549 | |
| 1550 bool java_lang_reflect_Method::has_parameter_annotations_field() { | |
| 1551 return (parameter_annotations_offset >= 0); | |
| 1552 } | |
| 1553 | |
| 1554 oop java_lang_reflect_Method::parameter_annotations(oop method) { | |
| 1555 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1556 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); | |
| 1557 return method->obj_field(parameter_annotations_offset); | |
| 1558 } | |
| 1559 | |
| 1560 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) { | |
| 1561 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1562 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); | |
| 1563 method->obj_field_put(parameter_annotations_offset, value); | |
| 1564 } | |
| 1565 | |
| 1566 bool java_lang_reflect_Method::has_annotation_default_field() { | |
| 1567 return (annotation_default_offset >= 0); | |
| 1568 } | |
| 1569 | |
| 1570 oop java_lang_reflect_Method::annotation_default(oop method) { | |
| 1571 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1572 assert(has_annotation_default_field(), "annotation default field must be present"); | |
| 1573 return method->obj_field(annotation_default_offset); | |
| 1574 } | |
| 1575 | |
| 1576 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) { | |
| 1577 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1578 assert(has_annotation_default_field(), "annotation default field must be present"); | |
| 1579 method->obj_field_put(annotation_default_offset, value); | |
| 1580 } | |
| 1581 | |
| 1582 void java_lang_reflect_Constructor::compute_offsets() { | |
| 1583 klassOop k = SystemDictionary::reflect_constructor_klass(); | |
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1584 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); |
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1585 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature()); |
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1586 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature()); |
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1587 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); |
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1588 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); |
| 0 | 1589 // The generic signature and annotations fields are only present in 1.5 |
| 1590 signature_offset = -1; | |
| 1591 annotations_offset = -1; | |
| 1592 parameter_annotations_offset = -1; | |
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1593 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); |
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1594 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); |
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1595 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature()); |
| 0 | 1596 } |
| 1597 | |
| 1598 Handle java_lang_reflect_Constructor::create(TRAPS) { | |
| 1599 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1600 symbolHandle name = vmSymbolHandles::java_lang_reflect_Constructor(); | |
| 1601 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH); | |
| 1602 instanceKlassHandle klass (THREAD, k); | |
| 1603 // Ensure it is initialized | |
| 1604 klass->initialize(CHECK_NH); | |
| 1605 return klass->allocate_instance_handle(CHECK_NH); | |
| 1606 } | |
| 1607 | |
| 1608 oop java_lang_reflect_Constructor::clazz(oop reflect) { | |
| 1609 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1610 return reflect->obj_field(clazz_offset); | |
| 1611 } | |
| 1612 | |
| 1613 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) { | |
| 1614 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1615 reflect->obj_field_put(clazz_offset, value); | |
| 1616 } | |
| 1617 | |
| 1618 oop java_lang_reflect_Constructor::parameter_types(oop constructor) { | |
| 1619 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1620 return constructor->obj_field(parameterTypes_offset); | |
| 1621 } | |
| 1622 | |
| 1623 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) { | |
| 1624 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1625 constructor->obj_field_put(parameterTypes_offset, value); | |
| 1626 } | |
| 1627 | |
| 1628 oop java_lang_reflect_Constructor::exception_types(oop constructor) { | |
| 1629 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1630 return constructor->obj_field(exceptionTypes_offset); | |
| 1631 } | |
| 1632 | |
| 1633 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) { | |
| 1634 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1635 constructor->obj_field_put(exceptionTypes_offset, value); | |
| 1636 } | |
| 1637 | |
| 1638 int java_lang_reflect_Constructor::slot(oop reflect) { | |
| 1639 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1640 return reflect->int_field(slot_offset); | |
| 1641 } | |
| 1642 | |
| 1643 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) { | |
| 1644 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1645 reflect->int_field_put(slot_offset, value); | |
| 1646 } | |
| 1647 | |
| 1648 int java_lang_reflect_Constructor::modifiers(oop constructor) { | |
| 1649 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1650 return constructor->int_field(modifiers_offset); | |
| 1651 } | |
| 1652 | |
| 1653 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) { | |
| 1654 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1655 constructor->int_field_put(modifiers_offset, value); | |
| 1656 } | |
| 1657 | |
| 1658 bool java_lang_reflect_Constructor::has_signature_field() { | |
| 1659 return (signature_offset >= 0); | |
| 1660 } | |
| 1661 | |
| 1662 oop java_lang_reflect_Constructor::signature(oop constructor) { | |
| 1663 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1664 assert(has_signature_field(), "signature field must be present"); | |
| 1665 return constructor->obj_field(signature_offset); | |
| 1666 } | |
| 1667 | |
| 1668 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) { | |
| 1669 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1670 assert(has_signature_field(), "signature field must be present"); | |
| 1671 constructor->obj_field_put(signature_offset, value); | |
| 1672 } | |
| 1673 | |
| 1674 bool java_lang_reflect_Constructor::has_annotations_field() { | |
| 1675 return (annotations_offset >= 0); | |
| 1676 } | |
| 1677 | |
| 1678 oop java_lang_reflect_Constructor::annotations(oop constructor) { | |
| 1679 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1680 assert(has_annotations_field(), "annotations field must be present"); | |
| 1681 return constructor->obj_field(annotations_offset); | |
| 1682 } | |
| 1683 | |
| 1684 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) { | |
| 1685 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1686 assert(has_annotations_field(), "annotations field must be present"); | |
| 1687 constructor->obj_field_put(annotations_offset, value); | |
| 1688 } | |
| 1689 | |
| 1690 bool java_lang_reflect_Constructor::has_parameter_annotations_field() { | |
| 1691 return (parameter_annotations_offset >= 0); | |
| 1692 } | |
| 1693 | |
| 1694 oop java_lang_reflect_Constructor::parameter_annotations(oop method) { | |
| 1695 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1696 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); | |
| 1697 return method->obj_field(parameter_annotations_offset); | |
| 1698 } | |
| 1699 | |
| 1700 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) { | |
| 1701 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1702 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); | |
| 1703 method->obj_field_put(parameter_annotations_offset, value); | |
| 1704 } | |
| 1705 | |
| 1706 void java_lang_reflect_Field::compute_offsets() { | |
| 1707 klassOop k = SystemDictionary::reflect_field_klass(); | |
|
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1708 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); |
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1709 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); |
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1710 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature()); |
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1711 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); |
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1712 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); |
| 0 | 1713 // The generic signature and annotations fields are only present in 1.5 |
| 1714 signature_offset = -1; | |
| 1715 annotations_offset = -1; | |
|
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1716 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); |
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1717 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); |
| 0 | 1718 } |
| 1719 | |
| 1720 Handle java_lang_reflect_Field::create(TRAPS) { | |
| 1721 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1722 symbolHandle name = vmSymbolHandles::java_lang_reflect_Field(); | |
| 1723 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH); | |
| 1724 instanceKlassHandle klass (THREAD, k); | |
| 1725 // Ensure it is initialized | |
| 1726 klass->initialize(CHECK_NH); | |
| 1727 return klass->allocate_instance_handle(CHECK_NH); | |
| 1728 } | |
| 1729 | |
| 1730 oop java_lang_reflect_Field::clazz(oop reflect) { | |
| 1731 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1732 return reflect->obj_field(clazz_offset); | |
| 1733 } | |
| 1734 | |
| 1735 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) { | |
| 1736 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1737 reflect->obj_field_put(clazz_offset, value); | |
| 1738 } | |
| 1739 | |
| 1740 oop java_lang_reflect_Field::name(oop field) { | |
| 1741 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1742 return field->obj_field(name_offset); | |
| 1743 } | |
| 1744 | |
| 1745 void java_lang_reflect_Field::set_name(oop field, oop value) { | |
| 1746 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1747 field->obj_field_put(name_offset, value); | |
| 1748 } | |
| 1749 | |
| 1750 oop java_lang_reflect_Field::type(oop field) { | |
| 1751 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1752 return field->obj_field(type_offset); | |
| 1753 } | |
| 1754 | |
| 1755 void java_lang_reflect_Field::set_type(oop field, oop value) { | |
| 1756 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1757 field->obj_field_put(type_offset, value); | |
| 1758 } | |
| 1759 | |
| 1760 int java_lang_reflect_Field::slot(oop reflect) { | |
| 1761 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1762 return reflect->int_field(slot_offset); | |
| 1763 } | |
| 1764 | |
| 1765 void java_lang_reflect_Field::set_slot(oop reflect, int value) { | |
| 1766 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1767 reflect->int_field_put(slot_offset, value); | |
| 1768 } | |
| 1769 | |
| 1770 int java_lang_reflect_Field::modifiers(oop field) { | |
| 1771 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1772 return field->int_field(modifiers_offset); | |
| 1773 } | |
| 1774 | |
| 1775 void java_lang_reflect_Field::set_modifiers(oop field, int value) { | |
| 1776 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1777 field->int_field_put(modifiers_offset, value); | |
| 1778 } | |
| 1779 | |
| 1780 bool java_lang_reflect_Field::has_signature_field() { | |
| 1781 return (signature_offset >= 0); | |
| 1782 } | |
| 1783 | |
| 1784 oop java_lang_reflect_Field::signature(oop field) { | |
| 1785 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1786 assert(has_signature_field(), "signature field must be present"); | |
| 1787 return field->obj_field(signature_offset); | |
| 1788 } | |
| 1789 | |
| 1790 void java_lang_reflect_Field::set_signature(oop field, oop value) { | |
| 1791 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1792 assert(has_signature_field(), "signature field must be present"); | |
| 1793 field->obj_field_put(signature_offset, value); | |
| 1794 } | |
| 1795 | |
| 1796 bool java_lang_reflect_Field::has_annotations_field() { | |
| 1797 return (annotations_offset >= 0); | |
| 1798 } | |
| 1799 | |
| 1800 oop java_lang_reflect_Field::annotations(oop field) { | |
| 1801 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1802 assert(has_annotations_field(), "annotations field must be present"); | |
| 1803 return field->obj_field(annotations_offset); | |
| 1804 } | |
| 1805 | |
| 1806 void java_lang_reflect_Field::set_annotations(oop field, oop value) { | |
| 1807 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1808 assert(has_annotations_field(), "annotations field must be present"); | |
| 1809 field->obj_field_put(annotations_offset, value); | |
| 1810 } | |
| 1811 | |
| 1812 | |
| 1813 void sun_reflect_ConstantPool::compute_offsets() { | |
| 1814 klassOop k = SystemDictionary::reflect_constant_pool_klass(); | |
| 1815 // This null test can be removed post beta | |
| 1816 if (k != NULL) { | |
|
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1817 compute_offset(_cp_oop_offset, k, vmSymbols::constantPoolOop_name(), vmSymbols::object_signature()); |
| 0 | 1818 } |
| 1819 } | |
| 1820 | |
| 1821 | |
| 1822 Handle sun_reflect_ConstantPool::create(TRAPS) { | |
| 1823 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1824 klassOop k = SystemDictionary::reflect_constant_pool_klass(); | |
| 1825 instanceKlassHandle klass (THREAD, k); | |
| 1826 // Ensure it is initialized | |
| 1827 klass->initialize(CHECK_NH); | |
| 1828 return klass->allocate_instance_handle(CHECK_NH); | |
| 1829 } | |
| 1830 | |
| 1831 | |
| 1832 oop sun_reflect_ConstantPool::cp_oop(oop reflect) { | |
| 1833 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1834 return reflect->obj_field(_cp_oop_offset); | |
| 1835 } | |
| 1836 | |
| 1837 | |
| 1838 void sun_reflect_ConstantPool::set_cp_oop(oop reflect, oop value) { | |
| 1839 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); | |
| 1840 reflect->obj_field_put(_cp_oop_offset, value); | |
| 1841 } | |
| 1842 | |
| 1843 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() { | |
| 1844 klassOop k = SystemDictionary::reflect_unsafe_static_field_accessor_impl_klass(); | |
| 1845 // This null test can be removed post beta | |
| 1846 if (k != NULL) { | |
|
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1847 compute_offset(_base_offset, k, |
| 0 | 1848 vmSymbols::base_name(), vmSymbols::object_signature()); |
| 1849 } | |
| 1850 } | |
| 1851 | |
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1852 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) { |
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1853 klassOop k = SystemDictionary::box_klass(type); |
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1854 if (k == NULL) return NULL; |
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1855 instanceKlassHandle h (THREAD, k); |
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1856 if (!h->is_initialized()) h->initialize(CHECK_0); |
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1857 return h->allocate_instance(THREAD); |
| 0 | 1858 } |
| 1859 | |
| 1860 | |
| 1861 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) { | |
|
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1862 oop box = initialize_and_allocate(type, CHECK_0); |
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1863 if (box == NULL) return NULL; |
| 0 | 1864 switch (type) { |
| 1865 case T_BOOLEAN: | |
| 1866 box->bool_field_put(value_offset, value->z); | |
| 1867 break; | |
| 1868 case T_CHAR: | |
| 1869 box->char_field_put(value_offset, value->c); | |
| 1870 break; | |
| 1871 case T_FLOAT: | |
| 1872 box->float_field_put(value_offset, value->f); | |
| 1873 break; | |
| 1874 case T_DOUBLE: | |
|
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1875 box->double_field_put(long_value_offset, value->d); |
| 0 | 1876 break; |
| 1877 case T_BYTE: | |
| 1878 box->byte_field_put(value_offset, value->b); | |
| 1879 break; | |
| 1880 case T_SHORT: | |
| 1881 box->short_field_put(value_offset, value->s); | |
| 1882 break; | |
| 1883 case T_INT: | |
| 1884 box->int_field_put(value_offset, value->i); | |
| 1885 break; | |
| 1886 case T_LONG: | |
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1887 box->long_field_put(long_value_offset, value->j); |
| 0 | 1888 break; |
| 1889 default: | |
| 1890 return NULL; | |
| 1891 } | |
| 1892 return box; | |
| 1893 } | |
| 1894 | |
| 1895 | |
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1896 BasicType java_lang_boxing_object::basic_type(oop box) { |
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1897 if (box == NULL) return T_ILLEGAL; |
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1898 BasicType type = SystemDictionary::box_klass_type(box->klass()); |
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1899 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt |
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1900 return T_ILLEGAL; |
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1901 return type; |
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1902 } |
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1903 |
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1904 |
| 0 | 1905 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) { |
|
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1906 BasicType type = SystemDictionary::box_klass_type(box->klass()); |
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1907 switch (type) { |
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1908 case T_BOOLEAN: |
| 0 | 1909 value->z = box->bool_field(value_offset); |
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1910 break; |
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1911 case T_CHAR: |
| 0 | 1912 value->c = box->char_field(value_offset); |
|
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1913 break; |
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1914 case T_FLOAT: |
| 0 | 1915 value->f = box->float_field(value_offset); |
|
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1916 break; |
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1917 case T_DOUBLE: |
|
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1918 value->d = box->double_field(long_value_offset); |
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1919 break; |
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1920 case T_BYTE: |
| 0 | 1921 value->b = box->byte_field(value_offset); |
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1922 break; |
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1923 case T_SHORT: |
| 0 | 1924 value->s = box->short_field(value_offset); |
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1925 break; |
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1926 case T_INT: |
| 0 | 1927 value->i = box->int_field(value_offset); |
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1928 break; |
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1929 case T_LONG: |
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1930 value->j = box->long_field(long_value_offset); |
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1931 break; |
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1932 default: |
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1933 return T_ILLEGAL; |
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1934 } // end switch |
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1935 return type; |
| 0 | 1936 } |
| 1937 | |
| 1938 | |
| 1939 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) { | |
|
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1940 BasicType type = SystemDictionary::box_klass_type(box->klass()); |
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1941 switch (type) { |
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1942 case T_BOOLEAN: |
| 0 | 1943 box->bool_field_put(value_offset, value->z); |
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1944 break; |
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1945 case T_CHAR: |
| 0 | 1946 box->char_field_put(value_offset, value->c); |
|
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1947 break; |
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1948 case T_FLOAT: |
| 0 | 1949 box->float_field_put(value_offset, value->f); |
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1950 break; |
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1951 case T_DOUBLE: |
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1952 box->double_field_put(long_value_offset, value->d); |
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1953 break; |
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1954 case T_BYTE: |
| 0 | 1955 box->byte_field_put(value_offset, value->b); |
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1956 break; |
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1957 case T_SHORT: |
| 0 | 1958 box->short_field_put(value_offset, value->s); |
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1959 break; |
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1960 case T_INT: |
| 0 | 1961 box->int_field_put(value_offset, value->i); |
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1962 break; |
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1963 case T_LONG: |
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1964 box->long_field_put(long_value_offset, value->j); |
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1965 break; |
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1966 default: |
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1967 return T_ILLEGAL; |
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1968 } // end switch |
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1969 return type; |
| 0 | 1970 } |
| 1971 | |
| 1972 | |
| 1973 // Support for java_lang_ref_Reference | |
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1974 oop java_lang_ref_Reference::pending_list_lock() { |
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1975 instanceKlass* ik = instanceKlass::cast(SystemDictionary::reference_klass()); |
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1976 char *addr = (((char *)ik->start_of_static_fields()) + static_lock_offset); |
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1977 if (UseCompressedOops) { |
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1978 return oopDesc::load_decode_heap_oop((narrowOop *)addr); |
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1979 } else { |
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1980 return oopDesc::load_decode_heap_oop((oop*)addr); |
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1981 } |
| 0 | 1982 } |
| 1983 | |
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1984 HeapWord *java_lang_ref_Reference::pending_list_addr() { |
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1985 instanceKlass* ik = instanceKlass::cast(SystemDictionary::reference_klass()); |
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1986 char *addr = (((char *)ik->start_of_static_fields()) + static_pending_offset); |
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1987 // XXX This might not be HeapWord aligned, almost rather be char *. |
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1988 return (HeapWord*)addr; |
| 0 | 1989 } |
| 1990 | |
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1991 oop java_lang_ref_Reference::pending_list() { |
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1992 char *addr = (char *)pending_list_addr(); |
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1993 if (UseCompressedOops) { |
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1994 return oopDesc::load_decode_heap_oop((narrowOop *)addr); |
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1995 } else { |
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1996 return oopDesc::load_decode_heap_oop((oop*)addr); |
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1997 } |
| 0 | 1998 } |
| 1999 | |
| 2000 | |
| 2001 // Support for java_lang_ref_SoftReference | |
| 2002 | |
| 2003 jlong java_lang_ref_SoftReference::timestamp(oop ref) { | |
| 2004 return ref->long_field(timestamp_offset); | |
| 2005 } | |
| 2006 | |
| 2007 jlong java_lang_ref_SoftReference::clock() { | |
| 2008 instanceKlass* ik = instanceKlass::cast(SystemDictionary::soft_reference_klass()); | |
| 2009 int offset = ik->offset_of_static_fields() + static_clock_offset; | |
| 2010 | |
| 2011 return SystemDictionary::soft_reference_klass()->long_field(offset); | |
| 2012 } | |
| 2013 | |
| 2014 void java_lang_ref_SoftReference::set_clock(jlong value) { | |
| 2015 instanceKlass* ik = instanceKlass::cast(SystemDictionary::soft_reference_klass()); | |
| 2016 int offset = ik->offset_of_static_fields() + static_clock_offset; | |
| 2017 | |
| 2018 SystemDictionary::soft_reference_klass()->long_field_put(offset, value); | |
| 2019 } | |
| 2020 | |
| 2021 | |
| 2022 // Support for java_security_AccessControlContext | |
| 2023 | |
| 2024 int java_security_AccessControlContext::_context_offset = 0; | |
| 2025 int java_security_AccessControlContext::_privilegedContext_offset = 0; | |
| 2026 int java_security_AccessControlContext::_isPrivileged_offset = 0; | |
| 2027 | |
| 2028 | |
| 2029 void java_security_AccessControlContext::compute_offsets() { | |
| 2030 assert(_isPrivileged_offset == 0, "offsets should be initialized only once"); | |
| 2031 fieldDescriptor fd; | |
| 2032 instanceKlass* ik = instanceKlass::cast(SystemDictionary::AccessControlContext_klass()); | |
| 2033 | |
| 2034 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) { | |
| 2035 fatal("Invalid layout of java.security.AccessControlContext"); | |
| 2036 } | |
| 2037 _context_offset = fd.offset(); | |
| 2038 | |
| 2039 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) { | |
| 2040 fatal("Invalid layout of java.security.AccessControlContext"); | |
| 2041 } | |
| 2042 _privilegedContext_offset = fd.offset(); | |
| 2043 | |
| 2044 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) { | |
| 2045 fatal("Invalid layout of java.security.AccessControlContext"); | |
| 2046 } | |
| 2047 _isPrivileged_offset = fd.offset(); | |
| 2048 } | |
| 2049 | |
| 2050 | |
| 2051 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) { | |
| 2052 assert(_isPrivileged_offset != 0, "offsets should have been initialized"); | |
| 2053 // Ensure klass is initialized | |
| 2054 instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0); | |
| 2055 // Allocate result | |
| 2056 oop result = instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0); | |
| 2057 // Fill in values | |
| 2058 result->obj_field_put(_context_offset, context()); | |
| 2059 result->obj_field_put(_privilegedContext_offset, privileged_context()); | |
| 2060 result->bool_field_put(_isPrivileged_offset, isPrivileged); | |
| 2061 return result; | |
| 2062 } | |
| 2063 | |
| 2064 | |
| 2065 // Support for java_lang_ClassLoader | |
| 2066 | |
| 2067 oop java_lang_ClassLoader::parent(oop loader) { | |
| 2068 assert(loader->is_oop(), "loader must be oop"); | |
| 2069 return loader->obj_field(parent_offset); | |
| 2070 } | |
| 2071 | |
| 2072 | |
| 2073 bool java_lang_ClassLoader::is_trusted_loader(oop loader) { | |
| 2074 // Fix for 4474172; see evaluation for more details | |
| 2075 loader = non_reflection_class_loader(loader); | |
| 2076 | |
| 2077 oop cl = SystemDictionary::java_system_loader(); | |
| 2078 while(cl != NULL) { | |
| 2079 if (cl == loader) return true; | |
| 2080 cl = parent(cl); | |
| 2081 } | |
| 2082 return false; | |
| 2083 } | |
| 2084 | |
| 2085 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) { | |
| 2086 if (loader != NULL) { | |
| 2087 // See whether this is one of the class loaders associated with | |
| 2088 // the generated bytecodes for reflection, and if so, "magically" | |
| 2089 // delegate to its parent to prevent class loading from occurring | |
| 2090 // in places where applications using reflection didn't expect it. | |
| 2091 klassOop delegating_cl_class = SystemDictionary::reflect_delegating_classloader_klass(); | |
| 2092 // This might be null in non-1.4 JDKs | |
| 2093 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) { | |
| 2094 return parent(loader); | |
| 2095 } | |
| 2096 } | |
| 2097 return loader; | |
| 2098 } | |
| 2099 | |
| 2100 | |
| 2101 // Support for java_lang_System | |
| 2102 | |
| 2103 void java_lang_System::compute_offsets() { | |
| 2104 assert(offset_of_static_fields == 0, "offsets should be initialized only once"); | |
| 2105 | |
| 2106 instanceKlass* ik = instanceKlass::cast(SystemDictionary::system_klass()); | |
| 2107 offset_of_static_fields = ik->offset_of_static_fields(); | |
| 2108 } | |
| 2109 | |
| 2110 int java_lang_System::in_offset_in_bytes() { | |
| 2111 return (offset_of_static_fields + static_in_offset); | |
| 2112 } | |
| 2113 | |
| 2114 | |
| 2115 int java_lang_System::out_offset_in_bytes() { | |
| 2116 return (offset_of_static_fields + static_out_offset); | |
| 2117 } | |
| 2118 | |
| 2119 | |
| 2120 int java_lang_System::err_offset_in_bytes() { | |
| 2121 return (offset_of_static_fields + static_err_offset); | |
| 2122 } | |
| 2123 | |
| 2124 | |
| 2125 | |
| 2126 int java_lang_String::value_offset; | |
| 2127 int java_lang_String::offset_offset; | |
| 2128 int java_lang_String::count_offset; | |
| 2129 int java_lang_String::hash_offset; | |
| 2130 int java_lang_Class::klass_offset; | |
| 2131 int java_lang_Class::array_klass_offset; | |
| 2132 int java_lang_Class::resolved_constructor_offset; | |
| 2133 int java_lang_Class::number_of_fake_oop_fields; | |
| 2134 int java_lang_Throwable::backtrace_offset; | |
| 2135 int java_lang_Throwable::detailMessage_offset; | |
| 2136 int java_lang_Throwable::cause_offset; | |
| 2137 int java_lang_Throwable::stackTrace_offset; | |
| 2138 int java_lang_reflect_AccessibleObject::override_offset; | |
| 2139 int java_lang_reflect_Method::clazz_offset; | |
| 2140 int java_lang_reflect_Method::name_offset; | |
| 2141 int java_lang_reflect_Method::returnType_offset; | |
| 2142 int java_lang_reflect_Method::parameterTypes_offset; | |
| 2143 int java_lang_reflect_Method::exceptionTypes_offset; | |
| 2144 int java_lang_reflect_Method::slot_offset; | |
| 2145 int java_lang_reflect_Method::modifiers_offset; | |
| 2146 int java_lang_reflect_Method::signature_offset; | |
| 2147 int java_lang_reflect_Method::annotations_offset; | |
| 2148 int java_lang_reflect_Method::parameter_annotations_offset; | |
| 2149 int java_lang_reflect_Method::annotation_default_offset; | |
| 2150 int java_lang_reflect_Constructor::clazz_offset; | |
| 2151 int java_lang_reflect_Constructor::parameterTypes_offset; | |
| 2152 int java_lang_reflect_Constructor::exceptionTypes_offset; | |
| 2153 int java_lang_reflect_Constructor::slot_offset; | |
| 2154 int java_lang_reflect_Constructor::modifiers_offset; | |
| 2155 int java_lang_reflect_Constructor::signature_offset; | |
| 2156 int java_lang_reflect_Constructor::annotations_offset; | |
| 2157 int java_lang_reflect_Constructor::parameter_annotations_offset; | |
| 2158 int java_lang_reflect_Field::clazz_offset; | |
| 2159 int java_lang_reflect_Field::name_offset; | |
| 2160 int java_lang_reflect_Field::type_offset; | |
| 2161 int java_lang_reflect_Field::slot_offset; | |
| 2162 int java_lang_reflect_Field::modifiers_offset; | |
| 2163 int java_lang_reflect_Field::signature_offset; | |
| 2164 int java_lang_reflect_Field::annotations_offset; | |
| 2165 int java_lang_boxing_object::value_offset; | |
|
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2166 int java_lang_boxing_object::long_value_offset; |
| 0 | 2167 int java_lang_ref_Reference::referent_offset; |
| 2168 int java_lang_ref_Reference::queue_offset; | |
| 2169 int java_lang_ref_Reference::next_offset; | |
| 2170 int java_lang_ref_Reference::discovered_offset; | |
| 2171 int java_lang_ref_Reference::static_lock_offset; | |
| 2172 int java_lang_ref_Reference::static_pending_offset; | |
| 2173 int java_lang_ref_Reference::number_of_fake_oop_fields; | |
| 2174 int java_lang_ref_SoftReference::timestamp_offset; | |
| 2175 int java_lang_ref_SoftReference::static_clock_offset; | |
| 2176 int java_lang_ClassLoader::parent_offset; | |
| 2177 int java_lang_System::offset_of_static_fields; | |
| 2178 int java_lang_System::static_in_offset; | |
| 2179 int java_lang_System::static_out_offset; | |
| 2180 int java_lang_System::static_err_offset; | |
| 2181 int java_lang_StackTraceElement::declaringClass_offset; | |
| 2182 int java_lang_StackTraceElement::methodName_offset; | |
| 2183 int java_lang_StackTraceElement::fileName_offset; | |
| 2184 int java_lang_StackTraceElement::lineNumber_offset; | |
| 2185 int java_lang_AssertionStatusDirectives::classes_offset; | |
| 2186 int java_lang_AssertionStatusDirectives::classEnabled_offset; | |
| 2187 int java_lang_AssertionStatusDirectives::packages_offset; | |
| 2188 int java_lang_AssertionStatusDirectives::packageEnabled_offset; | |
| 2189 int java_lang_AssertionStatusDirectives::deflt_offset; | |
| 2190 int java_nio_Buffer::_limit_offset; | |
| 2191 int sun_misc_AtomicLongCSImpl::_value_offset; | |
| 2192 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0; | |
| 2193 int sun_reflect_ConstantPool::_cp_oop_offset; | |
| 2194 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset; | |
| 2195 | |
| 2196 | |
| 2197 // Support for java_lang_StackTraceElement | |
| 2198 | |
| 2199 void java_lang_StackTraceElement::set_fileName(oop element, oop value) { | |
| 2200 element->obj_field_put(fileName_offset, value); | |
| 2201 } | |
| 2202 | |
| 2203 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) { | |
| 2204 element->obj_field_put(declaringClass_offset, value); | |
| 2205 } | |
| 2206 | |
| 2207 void java_lang_StackTraceElement::set_methodName(oop element, oop value) { | |
| 2208 element->obj_field_put(methodName_offset, value); | |
| 2209 } | |
| 2210 | |
| 2211 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) { | |
| 2212 element->int_field_put(lineNumber_offset, value); | |
| 2213 } | |
| 2214 | |
| 2215 | |
| 2216 // Support for java Assertions - java_lang_AssertionStatusDirectives. | |
| 2217 | |
| 2218 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) { | |
| 2219 o->obj_field_put(classes_offset, val); | |
| 2220 } | |
| 2221 | |
| 2222 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) { | |
| 2223 o->obj_field_put(classEnabled_offset, val); | |
| 2224 } | |
| 2225 | |
| 2226 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) { | |
| 2227 o->obj_field_put(packages_offset, val); | |
| 2228 } | |
| 2229 | |
| 2230 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) { | |
| 2231 o->obj_field_put(packageEnabled_offset, val); | |
| 2232 } | |
| 2233 | |
| 2234 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) { | |
| 2235 o->bool_field_put(deflt_offset, val); | |
| 2236 } | |
| 2237 | |
| 2238 | |
| 2239 // Support for intrinsification of java.nio.Buffer.checkIndex | |
| 2240 int java_nio_Buffer::limit_offset() { | |
| 2241 return _limit_offset; | |
| 2242 } | |
| 2243 | |
| 2244 | |
| 2245 void java_nio_Buffer::compute_offsets() { | |
| 2246 klassOop k = SystemDictionary::java_nio_Buffer_klass(); | |
|
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2247 assert(k != NULL, "must be loaded in 1.4+"); |
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2248 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature()); |
| 0 | 2249 } |
| 2250 | |
| 2251 // Support for intrinsification of sun.misc.AtomicLongCSImpl.attemptUpdate | |
| 2252 int sun_misc_AtomicLongCSImpl::value_offset() { | |
| 2253 assert(SystemDictionary::sun_misc_AtomicLongCSImpl_klass() != NULL, "can't call this"); | |
| 2254 return _value_offset; | |
| 2255 } | |
| 2256 | |
| 2257 | |
| 2258 void sun_misc_AtomicLongCSImpl::compute_offsets() { | |
| 2259 klassOop k = SystemDictionary::sun_misc_AtomicLongCSImpl_klass(); | |
| 2260 // If this class is not present, its value field offset won't be referenced. | |
| 2261 if (k != NULL) { | |
|
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2262 compute_offset(_value_offset, k, vmSymbols::value_name(), vmSymbols::long_signature()); |
| 0 | 2263 } |
| 2264 } | |
| 2265 | |
| 2266 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) { | |
| 2267 if (_owner_offset != 0) return; | |
| 2268 | |
| 2269 assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later"); | |
| 2270 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK); | |
| 2271 klassOop k = SystemDictionary::abstract_ownable_synchronizer_klass(); | |
|
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2272 compute_offset(_owner_offset, k, |
| 0 | 2273 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature()); |
| 2274 } | |
| 2275 | |
| 2276 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) { | |
| 2277 assert(_owner_offset != 0, "Must be initialized"); | |
| 2278 return obj->obj_field(_owner_offset); | |
| 2279 } | |
| 2280 | |
| 2281 // Compute hard-coded offsets | |
| 2282 // Invoked before SystemDictionary::initialize, so pre-loaded classes | |
| 2283 // are not available to determine the offset_of_static_fields. | |
| 2284 void JavaClasses::compute_hard_coded_offsets() { | |
|
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2285 const int x = heapOopSize; |
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2286 const int header = instanceOopDesc::base_offset_in_bytes(); |
| 0 | 2287 |
| 2288 // Do the String Class | |
| 2289 java_lang_String::value_offset = java_lang_String::hc_value_offset * x + header; | |
| 2290 java_lang_String::offset_offset = java_lang_String::hc_offset_offset * x + header; | |
| 2291 java_lang_String::count_offset = java_lang_String::offset_offset + sizeof (jint); | |
| 2292 java_lang_String::hash_offset = java_lang_String::count_offset + sizeof (jint); | |
| 2293 | |
| 2294 // Do the Class Class | |
| 2295 java_lang_Class::klass_offset = java_lang_Class::hc_klass_offset * x + header; | |
| 2296 java_lang_Class::array_klass_offset = java_lang_Class::hc_array_klass_offset * x + header; | |
| 2297 java_lang_Class::resolved_constructor_offset = java_lang_Class::hc_resolved_constructor_offset * x + header; | |
| 2298 | |
| 2299 // This is NOT an offset | |
| 2300 java_lang_Class::number_of_fake_oop_fields = java_lang_Class::hc_number_of_fake_oop_fields; | |
| 2301 | |
| 2302 // Throwable Class | |
| 2303 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header; | |
| 2304 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header; | |
| 2305 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header; | |
| 2306 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header; | |
| 2307 | |
| 2308 // java_lang_boxing_object | |
|
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2309 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header; |
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2310 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong); |
| 0 | 2311 |
| 2312 // java_lang_ref_Reference: | |
| 2313 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header; | |
| 2314 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header; | |
| 2315 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header; | |
| 2316 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header; | |
| 2317 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x; | |
| 2318 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x; | |
| 2319 // Artificial fields for java_lang_ref_Reference | |
| 2320 // The first field is for the discovered field added in 1.4 | |
| 2321 java_lang_ref_Reference::number_of_fake_oop_fields = 1; | |
| 2322 | |
| 2323 // java_lang_ref_SoftReference Class | |
|
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2324 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong); |
| 0 | 2325 // Don't multiply static fields because they are always in wordSize units |
| 2326 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x; | |
| 2327 | |
| 2328 // java_lang_ClassLoader | |
| 2329 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header; | |
| 2330 | |
| 2331 // java_lang_System | |
| 2332 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x; | |
| 2333 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x; | |
| 2334 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x; | |
| 2335 | |
| 2336 // java_lang_StackTraceElement | |
| 2337 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header; | |
| 2338 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header; | |
| 2339 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header; | |
| 2340 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header; | |
| 2341 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header; | |
| 2342 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header; | |
| 2343 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header; | |
| 2344 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header; | |
| 2345 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header; | |
| 2346 | |
| 2347 } | |
| 2348 | |
| 2349 | |
| 2350 // Compute non-hard-coded field offsets of all the classes in this file | |
| 2351 void JavaClasses::compute_offsets() { | |
| 2352 | |
| 2353 java_lang_Class::compute_offsets(); | |
| 2354 java_lang_System::compute_offsets(); | |
| 2355 java_lang_Thread::compute_offsets(); | |
| 2356 java_lang_ThreadGroup::compute_offsets(); | |
| 2357 java_security_AccessControlContext::compute_offsets(); | |
| 2358 // Initialize reflection classes. The layouts of these classes | |
| 2359 // changed with the new reflection implementation in JDK 1.4, and | |
| 2360 // since the Universe doesn't know what JDK version it is until this | |
| 2361 // point we defer computation of these offsets until now. | |
| 2362 java_lang_reflect_AccessibleObject::compute_offsets(); | |
| 2363 java_lang_reflect_Method::compute_offsets(); | |
| 2364 java_lang_reflect_Constructor::compute_offsets(); | |
| 2365 java_lang_reflect_Field::compute_offsets(); | |
| 2366 if (JDK_Version::is_gte_jdk14x_version()) { | |
| 2367 java_nio_Buffer::compute_offsets(); | |
| 2368 } | |
| 2369 if (JDK_Version::is_gte_jdk15x_version()) { | |
| 2370 sun_reflect_ConstantPool::compute_offsets(); | |
| 2371 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets(); | |
| 2372 } | |
| 2373 sun_misc_AtomicLongCSImpl::compute_offsets(); | |
| 2374 } | |
| 2375 | |
| 2376 #ifndef PRODUCT | |
| 2377 | |
| 2378 // These functions exist to assert the validity of hard-coded field offsets to guard | |
| 2379 // against changes in the class files | |
| 2380 | |
| 2381 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) { | |
| 2382 EXCEPTION_MARK; | |
| 2383 fieldDescriptor fd; | |
| 2384 symbolHandle klass_sym = oopFactory::new_symbol_handle(klass_name, CATCH); | |
| 2385 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); | |
| 2386 instanceKlassHandle h_klass (THREAD, k); | |
| 2387 //instanceKlassHandle h_klass(klass); | |
| 2388 symbolHandle f_name = oopFactory::new_symbol_handle(field_name, CATCH); | |
| 2389 symbolHandle f_sig = oopFactory::new_symbol_handle(field_sig, CATCH); | |
| 2390 if (!h_klass->find_local_field(f_name(), f_sig(), &fd)) { | |
| 2391 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name); | |
| 2392 return false; | |
| 2393 } | |
| 2394 if (fd.is_static()) { | |
| 2395 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name); | |
| 2396 return false; | |
| 2397 } | |
| 2398 if (fd.offset() == hardcoded_offset ) { | |
| 2399 return true; | |
| 2400 } else { | |
| 2401 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.", | |
| 2402 klass_name, field_name, hardcoded_offset, fd.offset()); | |
| 2403 return false; | |
| 2404 } | |
| 2405 } | |
| 2406 | |
| 2407 | |
| 2408 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) { | |
| 2409 EXCEPTION_MARK; | |
| 2410 fieldDescriptor fd; | |
| 2411 symbolHandle klass_sym = oopFactory::new_symbol_handle(klass_name, CATCH); | |
| 2412 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); | |
| 2413 instanceKlassHandle h_klass (THREAD, k); | |
| 2414 symbolHandle f_name = oopFactory::new_symbol_handle(field_name, CATCH); | |
| 2415 symbolHandle f_sig = oopFactory::new_symbol_handle(field_sig, CATCH); | |
| 2416 if (!h_klass->find_local_field(f_name(), f_sig(), &fd)) { | |
| 2417 tty->print_cr("Static field %s.%s not found", klass_name, field_name); | |
| 2418 return false; | |
| 2419 } | |
| 2420 if (!fd.is_static()) { | |
| 2421 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name); | |
| 2422 return false; | |
| 2423 } | |
| 2424 if (fd.offset() == hardcoded_offset + h_klass->offset_of_static_fields()) { | |
| 2425 return true; | |
| 2426 } else { | |
| 2427 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()); | |
| 2428 return false; | |
| 2429 } | |
| 2430 } | |
| 2431 | |
| 2432 | |
|
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2433 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) { |
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2434 EXCEPTION_MARK; |
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2435 fieldDescriptor fd; |
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2436 symbolHandle klass_sym = oopFactory::new_symbol_handle(klass_name, CATCH); |
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2437 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); |
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2438 instanceKlassHandle h_klass (THREAD, k); |
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2439 symbolHandle f_name = oopFactory::new_symbol_handle(field_name, CATCH); |
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2440 symbolHandle f_sig = oopFactory::new_symbol_handle(field_sig, CATCH); |
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2441 if (!h_klass->find_local_field(f_name(), f_sig(), &fd)) { |
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2442 tty->print_cr("Static field %s.%s not found", klass_name, field_name); |
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2443 return false; |
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2444 } |
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2445 if (!fd.is_static() || !fd.has_initial_value()) { |
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2446 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name); |
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2447 return false; |
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2448 } |
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2449 if (!fd.initial_value_tag().is_int()) { |
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2450 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name); |
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2451 return false; |
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2452 } |
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2453 jint field_value = fd.int_initial_value(); |
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2454 if (field_value == hardcoded_constant) { |
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2455 return true; |
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2456 } else { |
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2457 tty->print_cr("Constant value of static field %s.%s is hardcoded as %d but should really be %d.", klass_name, field_name, hardcoded_constant, field_value); |
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2458 return false; |
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2459 } |
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2460 } |
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2461 |
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2462 |
| 0 | 2463 // Check the hard-coded field offsets of all the classes in this file |
| 2464 | |
| 2465 void JavaClasses::check_offsets() { | |
| 2466 bool valid = true; | |
| 2467 | |
| 2468 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ | |
| 2469 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig) | |
| 2470 | |
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2471 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ |
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2472 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig) |
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2473 |
| 0 | 2474 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ |
| 2475 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig) | |
| 2476 | |
|
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2477 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \ |
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2478 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig) |
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2479 |
| 0 | 2480 // java.lang.String |
| 2481 | |
| 2482 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C"); | |
| 2483 CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I"); | |
| 2484 CHECK_OFFSET("java/lang/String", java_lang_String, count, "I"); | |
| 2485 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I"); | |
| 2486 | |
| 2487 // java.lang.Class | |
| 2488 | |
| 2489 // Fake fields | |
| 2490 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked | |
| 2491 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked | |
| 2492 // CHECK_OFFSET("java/lang/Class", java_lang_Class, resolved_constructor); // %%% this needs to be checked | |
| 2493 | |
| 2494 // java.lang.Throwable | |
| 2495 | |
| 2496 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;"); | |
| 2497 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;"); | |
| 2498 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;"); | |
| 2499 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;"); | |
| 2500 | |
| 2501 // Boxed primitive objects (java_lang_boxing_object) | |
| 2502 | |
| 2503 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z"); | |
| 2504 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C"); | |
| 2505 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F"); | |
|
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2506 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D"); |
| 0 | 2507 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B"); |
| 2508 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S"); | |
| 2509 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I"); | |
|
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2510 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J"); |
| 0 | 2511 |
| 2512 // java.lang.ClassLoader | |
| 2513 | |
| 2514 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;"); | |
| 2515 | |
| 2516 // java.lang.System | |
| 2517 | |
| 2518 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;"); | |
| 2519 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;"); | |
| 2520 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;"); | |
| 2521 | |
| 2522 // java.lang.StackTraceElement | |
| 2523 | |
| 2524 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;"); | |
| 2525 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;"); | |
| 2526 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;"); | |
| 2527 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I"); | |
| 2528 | |
| 2529 // java.lang.ref.Reference | |
| 2530 | |
| 2531 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;"); | |
| 2532 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;"); | |
| 2533 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;"); | |
| 2534 // Fake field | |
| 2535 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;"); | |
| 2536 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;"); | |
| 2537 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;"); | |
| 2538 | |
| 2539 // java.lang.ref.SoftReference | |
| 2540 | |
| 2541 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J"); | |
| 2542 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J"); | |
| 2543 | |
| 2544 // java.lang.AssertionStatusDirectives | |
| 2545 // | |
| 2546 // The CheckAssertionStatusDirectives boolean can be removed from here and | |
| 2547 // globals.hpp after the AssertionStatusDirectives class has been integrated | |
| 2548 // into merlin "for some time." Without it, the vm will fail with early | |
| 2549 // merlin builds. | |
| 2550 | |
| 2551 if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) { | |
| 2552 const char* nm = "java/lang/AssertionStatusDirectives"; | |
| 2553 const char* sig = "[Ljava/lang/String;"; | |
| 2554 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig); | |
| 2555 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z"); | |
| 2556 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig); | |
| 2557 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z"); | |
| 2558 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z"); | |
| 2559 } | |
| 2560 | |
| 2561 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed"); | |
| 2562 } | |
| 2563 | |
| 2564 #endif // PRODUCT | |
| 2565 | |
| 2566 void javaClasses_init() { | |
| 2567 JavaClasses::compute_offsets(); | |
| 2568 JavaClasses::check_offsets(); | |
| 2569 FilteredFieldsMap::initialize(); // must be done after computing offsets. | |
| 2570 } |