Mercurial > hg > truffle
annotate src/share/vm/classfile/javaClasses.hpp @ 514:c81d2ef51ca3
4670071: loadClassInternal is too restrictive.
Summary: VM support for deadlock fix. Library fix in 4735126. See API proposal.
Reviewed-by: dholmes, blacklion
| author | acorn |
|---|---|
| date | Mon, 05 Jan 2009 13:44:03 -0500 |
| parents | d1605aabd0a1 |
| children | 0fbdb4381b99 |
| 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 // Interface for manipulating the basic Java classes. | |
| 26 // | |
| 27 // All dependencies on layout of actual Java classes should be kept here. | |
| 28 // If the layout of any of the classes above changes the offsets must be adjusted. | |
| 29 // | |
| 30 // For most classes we hardwire the offsets for performance reasons. In certain | |
| 31 // cases (e.g. java.security.AccessControlContext) we compute the offsets at | |
| 32 // startup since the layout here differs between JDK1.2 and JDK1.3. | |
| 33 // | |
| 34 // Note that fields (static and non-static) are arranged with oops before non-oops | |
| 35 // on a per class basis. The offsets below have to reflect this ordering. | |
| 36 // | |
| 37 // When editing the layouts please update the check_offset verification code | |
| 38 // correspondingly. The names in the enums must be identical to the actual field | |
| 39 // names in order for the verification code to work. | |
| 40 | |
| 41 | |
| 42 // Interface to java.lang.String objects | |
| 43 | |
| 44 class java_lang_String : AllStatic { | |
| 45 private: | |
| 46 enum { | |
| 47 hc_value_offset = 0, | |
|
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48 hc_offset_offset = 1 |
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49 //hc_count_offset = 2 -- not a word-scaled offset |
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50 //hc_hash_offset = 3 -- not a word-scaled offset |
| 0 | 51 }; |
| 52 | |
| 53 static int value_offset; | |
| 54 static int offset_offset; | |
| 55 static int count_offset; | |
| 56 static int hash_offset; | |
| 57 | |
| 58 static Handle basic_create(int length, bool tenured, TRAPS); | |
| 59 static Handle basic_create_from_unicode(jchar* unicode, int length, bool tenured, TRAPS); | |
| 60 | |
| 61 static void set_value( oop string, typeArrayOop buffer) { string->obj_field_put(value_offset, (oop)buffer); } | |
| 62 static void set_offset(oop string, int offset) { string->int_field_put(offset_offset, offset); } | |
| 63 static void set_count( oop string, int count) { string->int_field_put(count_offset, count); } | |
| 64 | |
| 65 public: | |
| 66 // Instance creation | |
| 67 static Handle create_from_unicode(jchar* unicode, int len, TRAPS); | |
| 68 static Handle create_tenured_from_unicode(jchar* unicode, int len, TRAPS); | |
| 69 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS); | |
| 70 static Handle create_from_str(const char* utf8_str, TRAPS); | |
| 71 static oop create_oop_from_str(const char* utf8_str, TRAPS); | |
| 72 static Handle create_from_symbol(symbolHandle symbol, TRAPS); | |
| 73 static Handle create_from_platform_dependent_str(const char* str, TRAPS); | |
| 74 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS); | |
| 75 | |
| 76 static int value_offset_in_bytes() { return value_offset; } | |
| 77 static int count_offset_in_bytes() { return count_offset; } | |
| 78 static int offset_offset_in_bytes() { return offset_offset; } | |
| 79 static int hash_offset_in_bytes() { return hash_offset; } | |
| 80 | |
| 81 // Accessors | |
| 82 static typeArrayOop value(oop java_string) { | |
| 83 assert(is_instance(java_string), "must be java_string"); | |
| 84 return (typeArrayOop) java_string->obj_field(value_offset); | |
| 85 } | |
| 86 static int offset(oop java_string) { | |
| 87 assert(is_instance(java_string), "must be java_string"); | |
| 88 return java_string->int_field(offset_offset); | |
| 89 } | |
| 90 static int length(oop java_string) { | |
| 91 assert(is_instance(java_string), "must be java_string"); | |
| 92 return java_string->int_field(count_offset); | |
| 93 } | |
| 94 static int utf8_length(oop java_string); | |
| 95 | |
| 96 // String converters | |
| 97 static char* as_utf8_string(oop java_string); | |
| 98 static char* as_utf8_string(oop java_string, int start, int len); | |
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99 static char* as_platform_dependent_str(Handle java_string, TRAPS); |
| 0 | 100 static jchar* as_unicode_string(oop java_string, int& length); |
| 101 | |
| 102 static bool equals(oop java_string, jchar* chars, int len); | |
| 103 | |
| 104 // Conversion between '.' and '/' formats | |
| 105 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); } | |
| 106 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); } | |
| 107 | |
| 108 // Conversion | |
| 109 static symbolHandle as_symbol(Handle java_string, TRAPS); | |
| 110 | |
| 111 // Testers | |
| 112 static bool is_instance(oop obj) { | |
| 113 return obj != NULL && obj->klass() == SystemDictionary::string_klass(); | |
| 114 } | |
| 115 | |
| 116 // Debugging | |
| 117 static void print(Handle java_string, outputStream* st); | |
| 118 friend class JavaClasses; | |
| 119 }; | |
| 120 | |
| 121 | |
| 122 // Interface to java.lang.Class objects | |
| 123 | |
| 124 class java_lang_Class : AllStatic { | |
| 125 friend class VMStructs; | |
| 126 private: | |
| 127 // The fake offsets are added by the class loader when java.lang.Class is loaded | |
| 128 | |
| 129 enum { | |
| 130 hc_klass_offset = 0, | |
| 131 hc_array_klass_offset = 1, | |
| 132 hc_resolved_constructor_offset = 2, | |
| 133 hc_number_of_fake_oop_fields = 3 | |
| 134 }; | |
| 135 | |
| 136 static int klass_offset; | |
| 137 static int resolved_constructor_offset; | |
| 138 static int array_klass_offset; | |
| 139 static int number_of_fake_oop_fields; | |
| 140 | |
| 141 static void compute_offsets(); | |
| 142 static bool offsets_computed; | |
| 143 static int classRedefinedCount_offset; | |
| 514 | 144 static int parallelCapable_offset; |
| 0 | 145 |
| 146 public: | |
| 147 // Instance creation | |
| 148 static oop create_mirror(KlassHandle k, TRAPS); | |
| 149 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); | |
| 150 // Conversion | |
| 151 static klassOop as_klassOop(oop java_class); | |
| 152 // Testing | |
|
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153 static bool is_instance(oop obj) { |
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154 return obj != NULL && obj->klass() == SystemDictionary::class_klass(); |
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155 } |
| 0 | 156 static bool is_primitive(oop java_class); |
| 157 static BasicType primitive_type(oop java_class); | |
| 158 static oop primitive_mirror(BasicType t); | |
| 159 // JVM_NewInstance support | |
| 160 static methodOop resolved_constructor(oop java_class); | |
| 161 static void set_resolved_constructor(oop java_class, methodOop constructor); | |
| 162 // JVM_NewArray support | |
| 163 static klassOop array_klass(oop java_class); | |
| 164 static void set_array_klass(oop java_class, klassOop klass); | |
| 165 // compiler support for class operations | |
| 166 static int klass_offset_in_bytes() { return klass_offset; } | |
| 167 static int resolved_constructor_offset_in_bytes() { return resolved_constructor_offset; } | |
| 168 static int array_klass_offset_in_bytes() { return array_klass_offset; } | |
| 169 // Support for classRedefinedCount field | |
| 170 static int classRedefinedCount(oop the_class_mirror); | |
| 171 static void set_classRedefinedCount(oop the_class_mirror, int value); | |
| 514 | 172 // Support for parallelCapable field |
| 173 static bool parallelCapable(oop the_class_mirror); | |
| 0 | 174 // Debugging |
| 175 friend class JavaClasses; | |
| 176 friend class instanceKlass; // verification code accesses offsets | |
| 177 friend class ClassFileParser; // access to number_of_fake_fields | |
| 178 }; | |
| 179 | |
| 180 // Interface to java.lang.Thread objects | |
| 181 | |
| 182 class java_lang_Thread : AllStatic { | |
| 183 private: | |
| 184 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
| 185 // so we compute the offsets at startup rather than hard-wiring them. | |
| 186 static int _name_offset; | |
| 187 static int _group_offset; | |
| 188 static int _contextClassLoader_offset; | |
| 189 static int _inheritedAccessControlContext_offset; | |
| 190 static int _priority_offset; | |
| 191 static int _eetop_offset; | |
| 192 static int _daemon_offset; | |
| 193 static int _stillborn_offset; | |
| 194 static int _stackSize_offset; | |
| 195 static int _tid_offset; | |
| 196 static int _thread_status_offset; | |
| 197 static int _park_blocker_offset; | |
| 198 static int _park_event_offset ; | |
| 199 | |
| 200 static void compute_offsets(); | |
| 201 | |
| 202 public: | |
| 203 // Instance creation | |
| 204 static oop create(); | |
| 205 // Returns the JavaThread associated with the thread obj | |
| 206 static JavaThread* thread(oop java_thread); | |
| 207 // Set JavaThread for instance | |
| 208 static void set_thread(oop java_thread, JavaThread* thread); | |
| 209 // Name | |
| 210 static typeArrayOop name(oop java_thread); | |
| 211 static void set_name(oop java_thread, typeArrayOop name); | |
| 212 // Priority | |
| 213 static ThreadPriority priority(oop java_thread); | |
| 214 static void set_priority(oop java_thread, ThreadPriority priority); | |
| 215 // Thread group | |
| 216 static oop threadGroup(oop java_thread); | |
| 217 // Stillborn | |
| 218 static bool is_stillborn(oop java_thread); | |
| 219 static void set_stillborn(oop java_thread); | |
| 220 // Alive (NOTE: this is not really a field, but provides the correct | |
| 221 // definition without doing a Java call) | |
| 222 static bool is_alive(oop java_thread); | |
| 223 // Daemon | |
| 224 static bool is_daemon(oop java_thread); | |
| 225 static void set_daemon(oop java_thread); | |
| 226 // Context ClassLoader | |
| 227 static oop context_class_loader(oop java_thread); | |
| 228 // Control context | |
| 229 static oop inherited_access_control_context(oop java_thread); | |
| 230 // Stack size hint | |
| 231 static jlong stackSize(oop java_thread); | |
| 232 // Thread ID | |
| 233 static jlong thread_id(oop java_thread); | |
| 234 | |
| 235 // Blocker object responsible for thread parking | |
| 236 static oop park_blocker(oop java_thread); | |
| 237 | |
| 238 // Pointer to type-stable park handler, encoded as jlong. | |
| 239 // Should be set when apparently null | |
| 240 // For details, see unsafe.cpp Unsafe_Unpark | |
| 241 static jlong park_event(oop java_thread); | |
| 242 static bool set_park_event(oop java_thread, jlong ptr); | |
| 243 | |
| 244 // Java Thread Status for JVMTI and M&M use. | |
| 245 // This thread status info is saved in threadStatus field of | |
| 246 // java.lang.Thread java class. | |
| 247 enum ThreadStatus { | |
| 248 NEW = 0, | |
| 249 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running | |
| 250 JVMTI_THREAD_STATE_RUNNABLE, | |
| 251 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep() | |
| 252 JVMTI_THREAD_STATE_WAITING + | |
| 253 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
| 254 JVMTI_THREAD_STATE_SLEEPING, | |
| 255 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait() | |
| 256 JVMTI_THREAD_STATE_WAITING + | |
| 257 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
| 258 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
| 259 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long) | |
| 260 JVMTI_THREAD_STATE_WAITING + | |
| 261 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
| 262 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
| 263 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park() | |
| 264 JVMTI_THREAD_STATE_WAITING + | |
| 265 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
| 266 JVMTI_THREAD_STATE_PARKED, | |
| 267 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long) | |
| 268 JVMTI_THREAD_STATE_WAITING + | |
| 269 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
| 270 JVMTI_THREAD_STATE_PARKED, | |
| 271 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block | |
| 272 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, | |
| 273 TERMINATED = JVMTI_THREAD_STATE_TERMINATED | |
| 274 }; | |
| 275 // Write thread status info to threadStatus field of java.lang.Thread. | |
| 276 static void set_thread_status(oop java_thread_oop, ThreadStatus status); | |
| 277 // Read thread status info from threadStatus field of java.lang.Thread. | |
| 278 static ThreadStatus get_thread_status(oop java_thread_oop); | |
| 279 | |
| 280 static const char* thread_status_name(oop java_thread_oop); | |
| 281 | |
| 282 // Debugging | |
| 283 friend class JavaClasses; | |
| 284 }; | |
| 285 | |
| 286 // Interface to java.lang.ThreadGroup objects | |
| 287 | |
| 288 class java_lang_ThreadGroup : AllStatic { | |
| 289 private: | |
| 290 static int _parent_offset; | |
| 291 static int _name_offset; | |
| 292 static int _threads_offset; | |
| 293 static int _groups_offset; | |
| 294 static int _maxPriority_offset; | |
| 295 static int _destroyed_offset; | |
| 296 static int _daemon_offset; | |
| 297 static int _vmAllowSuspension_offset; | |
| 298 static int _nthreads_offset; | |
| 299 static int _ngroups_offset; | |
| 300 | |
| 301 static void compute_offsets(); | |
| 302 | |
| 303 public: | |
| 304 // parent ThreadGroup | |
| 305 static oop parent(oop java_thread_group); | |
| 306 // name | |
| 307 static typeArrayOop name(oop java_thread_group); | |
| 308 // ("name as oop" accessor is not necessary) | |
| 309 // Number of threads in group | |
| 310 static int nthreads(oop java_thread_group); | |
| 311 // threads | |
| 312 static objArrayOop threads(oop java_thread_group); | |
| 313 // Number of threads in group | |
| 314 static int ngroups(oop java_thread_group); | |
| 315 // groups | |
| 316 static objArrayOop groups(oop java_thread_group); | |
| 317 // maxPriority in group | |
| 318 static ThreadPriority maxPriority(oop java_thread_group); | |
| 319 // Destroyed | |
| 320 static bool is_destroyed(oop java_thread_group); | |
| 321 // Daemon | |
| 322 static bool is_daemon(oop java_thread_group); | |
| 323 // vmAllowSuspension | |
| 324 static bool is_vmAllowSuspension(oop java_thread_group); | |
| 325 // Debugging | |
| 326 friend class JavaClasses; | |
| 327 }; | |
| 328 | |
| 329 | |
| 330 | |
| 331 // Interface to java.lang.Throwable objects | |
| 332 | |
| 333 class java_lang_Throwable: AllStatic { | |
| 334 friend class BacktraceBuilder; | |
| 335 | |
| 336 private: | |
| 337 // Offsets | |
| 338 enum { | |
| 339 hc_backtrace_offset = 0, | |
| 340 hc_detailMessage_offset = 1, | |
| 341 hc_cause_offset = 2, // New since 1.4 | |
| 342 hc_stackTrace_offset = 3 // New since 1.4 | |
| 343 }; | |
| 344 // Trace constants | |
| 345 enum { | |
| 346 trace_methods_offset = 0, | |
| 347 trace_bcis_offset = 1, | |
| 348 trace_next_offset = 2, | |
| 349 trace_size = 3, | |
| 350 trace_chunk_size = 32 | |
| 351 }; | |
| 352 | |
| 353 static int backtrace_offset; | |
| 354 static int detailMessage_offset; | |
| 355 static int cause_offset; | |
| 356 static int stackTrace_offset; | |
| 357 | |
| 358 // Printing | |
| 359 static char* print_stack_element_to_buffer(methodOop method, int bci); | |
| 360 static void print_to_stream(Handle stream, const char* str); | |
| 361 // StackTrace (programmatic access, new since 1.4) | |
| 362 static void clear_stacktrace(oop throwable); | |
| 363 // No stack trace available | |
| 364 static const char* no_stack_trace_message(); | |
| 365 | |
| 366 public: | |
| 367 // Backtrace | |
| 368 static oop backtrace(oop throwable); | |
| 369 static void set_backtrace(oop throwable, oop value); | |
| 370 // Needed by JVMTI to filter out this internal field. | |
| 371 static int get_backtrace_offset() { return backtrace_offset;} | |
| 372 static int get_detailMessage_offset() { return detailMessage_offset;} | |
| 373 // Message | |
| 374 static oop message(oop throwable); | |
| 375 static oop message(Handle throwable); | |
| 376 static void set_message(oop throwable, oop value); | |
| 377 // Print stack trace stored in exception by call-back to Java | |
| 378 // Note: this is no longer used in Merlin, but we still suppport | |
| 379 // it for compatibility. | |
| 380 static void print_stack_trace(oop throwable, oop print_stream); | |
| 381 static void print_stack_element(Handle stream, methodOop method, int bci); | |
| 382 static void print_stack_element(outputStream *st, methodOop method, int bci); | |
| 383 static void print_stack_usage(Handle stream); | |
| 384 | |
| 385 // Allocate space for backtrace (created but stack trace not filled in) | |
| 386 static void allocate_backtrace(Handle throwable, TRAPS); | |
| 387 // Fill in current stack trace for throwable with preallocated backtrace (no GC) | |
| 388 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); | |
| 389 | |
| 390 // Fill in current stack trace, can cause GC | |
| 391 static void fill_in_stack_trace(Handle throwable, TRAPS); | |
| 392 static void fill_in_stack_trace(Handle throwable); | |
| 393 // Programmatic access to stack trace | |
| 394 static oop get_stack_trace_element(oop throwable, int index, TRAPS); | |
| 395 static int get_stack_trace_depth(oop throwable, TRAPS); | |
| 396 // Printing | |
| 397 static void print(oop throwable, outputStream* st); | |
| 398 static void print(Handle throwable, outputStream* st); | |
| 399 static void print_stack_trace(oop throwable, outputStream* st); | |
| 400 // Debugging | |
| 401 friend class JavaClasses; | |
| 402 }; | |
| 403 | |
| 404 | |
| 405 // Interface to java.lang.reflect.AccessibleObject objects | |
| 406 | |
| 407 class java_lang_reflect_AccessibleObject: AllStatic { | |
| 408 private: | |
| 409 // Note that to reduce dependencies on the JDK we compute these | |
| 410 // offsets at run-time. | |
| 411 static int override_offset; | |
| 412 | |
| 413 static void compute_offsets(); | |
| 414 | |
| 415 public: | |
| 416 // Accessors | |
| 417 static jboolean override(oop reflect); | |
| 418 static void set_override(oop reflect, jboolean value); | |
| 419 | |
| 420 // Debugging | |
| 421 friend class JavaClasses; | |
| 422 }; | |
| 423 | |
| 424 | |
| 425 // Interface to java.lang.reflect.Method objects | |
| 426 | |
| 427 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { | |
| 428 private: | |
| 429 // Note that to reduce dependencies on the JDK we compute these | |
| 430 // offsets at run-time. | |
| 431 static int clazz_offset; | |
| 432 static int name_offset; | |
| 433 static int returnType_offset; | |
| 434 static int parameterTypes_offset; | |
| 435 static int exceptionTypes_offset; | |
| 436 static int slot_offset; | |
| 437 static int modifiers_offset; | |
| 438 static int signature_offset; | |
| 439 static int annotations_offset; | |
| 440 static int parameter_annotations_offset; | |
| 441 static int annotation_default_offset; | |
| 442 | |
| 443 static void compute_offsets(); | |
| 444 | |
| 445 public: | |
| 446 // Allocation | |
| 447 static Handle create(TRAPS); | |
| 448 | |
| 449 // Accessors | |
| 450 static oop clazz(oop reflect); | |
| 451 static void set_clazz(oop reflect, oop value); | |
| 452 | |
| 453 static oop name(oop method); | |
| 454 static void set_name(oop method, oop value); | |
| 455 | |
| 456 static oop return_type(oop method); | |
| 457 static void set_return_type(oop method, oop value); | |
| 458 | |
| 459 static oop parameter_types(oop method); | |
| 460 static void set_parameter_types(oop method, oop value); | |
| 461 | |
| 462 static oop exception_types(oop method); | |
| 463 static void set_exception_types(oop method, oop value); | |
| 464 | |
| 465 static int slot(oop reflect); | |
| 466 static void set_slot(oop reflect, int value); | |
| 467 | |
| 468 static int modifiers(oop method); | |
| 469 static void set_modifiers(oop method, int value); | |
| 470 | |
| 471 static bool has_signature_field(); | |
| 472 static oop signature(oop method); | |
| 473 static void set_signature(oop method, oop value); | |
| 474 | |
| 475 static bool has_annotations_field(); | |
| 476 static oop annotations(oop method); | |
| 477 static void set_annotations(oop method, oop value); | |
| 478 | |
| 479 static bool has_parameter_annotations_field(); | |
| 480 static oop parameter_annotations(oop method); | |
| 481 static void set_parameter_annotations(oop method, oop value); | |
| 482 | |
| 483 static bool has_annotation_default_field(); | |
| 484 static oop annotation_default(oop method); | |
| 485 static void set_annotation_default(oop method, oop value); | |
| 486 | |
| 487 // Debugging | |
| 488 friend class JavaClasses; | |
| 489 }; | |
| 490 | |
| 491 | |
| 492 // Interface to java.lang.reflect.Constructor objects | |
| 493 | |
| 494 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { | |
| 495 private: | |
| 496 // Note that to reduce dependencies on the JDK we compute these | |
| 497 // offsets at run-time. | |
| 498 static int clazz_offset; | |
| 499 static int parameterTypes_offset; | |
| 500 static int exceptionTypes_offset; | |
| 501 static int slot_offset; | |
| 502 static int modifiers_offset; | |
| 503 static int signature_offset; | |
| 504 static int annotations_offset; | |
| 505 static int parameter_annotations_offset; | |
| 506 | |
| 507 static void compute_offsets(); | |
| 508 | |
| 509 public: | |
| 510 // Allocation | |
| 511 static Handle create(TRAPS); | |
| 512 | |
| 513 // Accessors | |
| 514 static oop clazz(oop reflect); | |
| 515 static void set_clazz(oop reflect, oop value); | |
| 516 | |
| 517 static oop parameter_types(oop constructor); | |
| 518 static void set_parameter_types(oop constructor, oop value); | |
| 519 | |
| 520 static oop exception_types(oop constructor); | |
| 521 static void set_exception_types(oop constructor, oop value); | |
| 522 | |
| 523 static int slot(oop reflect); | |
| 524 static void set_slot(oop reflect, int value); | |
| 525 | |
| 526 static int modifiers(oop constructor); | |
| 527 static void set_modifiers(oop constructor, int value); | |
| 528 | |
| 529 static bool has_signature_field(); | |
| 530 static oop signature(oop constructor); | |
| 531 static void set_signature(oop constructor, oop value); | |
| 532 | |
| 533 static bool has_annotations_field(); | |
| 534 static oop annotations(oop constructor); | |
| 535 static void set_annotations(oop constructor, oop value); | |
| 536 | |
| 537 static bool has_parameter_annotations_field(); | |
| 538 static oop parameter_annotations(oop method); | |
| 539 static void set_parameter_annotations(oop method, oop value); | |
| 540 | |
| 541 // Debugging | |
| 542 friend class JavaClasses; | |
| 543 }; | |
| 544 | |
| 545 | |
| 546 // Interface to java.lang.reflect.Field objects | |
| 547 | |
| 548 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { | |
| 549 private: | |
| 550 // Note that to reduce dependencies on the JDK we compute these | |
| 551 // offsets at run-time. | |
| 552 static int clazz_offset; | |
| 553 static int name_offset; | |
| 554 static int type_offset; | |
| 555 static int slot_offset; | |
| 556 static int modifiers_offset; | |
| 557 static int signature_offset; | |
| 558 static int annotations_offset; | |
| 559 | |
| 560 static void compute_offsets(); | |
| 561 | |
| 562 public: | |
| 563 // Allocation | |
| 564 static Handle create(TRAPS); | |
| 565 | |
| 566 // Accessors | |
| 567 static oop clazz(oop reflect); | |
| 568 static void set_clazz(oop reflect, oop value); | |
| 569 | |
| 570 static oop name(oop field); | |
| 571 static void set_name(oop field, oop value); | |
| 572 | |
| 573 static oop type(oop field); | |
| 574 static void set_type(oop field, oop value); | |
| 575 | |
| 576 static int slot(oop reflect); | |
| 577 static void set_slot(oop reflect, int value); | |
| 578 | |
| 579 static int modifiers(oop field); | |
| 580 static void set_modifiers(oop field, int value); | |
| 581 | |
| 582 static bool has_signature_field(); | |
| 583 static oop signature(oop constructor); | |
| 584 static void set_signature(oop constructor, oop value); | |
| 585 | |
| 586 static bool has_annotations_field(); | |
| 587 static oop annotations(oop constructor); | |
| 588 static void set_annotations(oop constructor, oop value); | |
| 589 | |
| 590 static bool has_parameter_annotations_field(); | |
| 591 static oop parameter_annotations(oop method); | |
| 592 static void set_parameter_annotations(oop method, oop value); | |
| 593 | |
| 594 static bool has_annotation_default_field(); | |
| 595 static oop annotation_default(oop method); | |
| 596 static void set_annotation_default(oop method, oop value); | |
| 597 | |
| 598 // Debugging | |
| 599 friend class JavaClasses; | |
| 600 }; | |
| 601 | |
| 602 // Interface to sun.reflect.ConstantPool objects | |
| 603 class sun_reflect_ConstantPool { | |
| 604 private: | |
| 605 // Note that to reduce dependencies on the JDK we compute these | |
| 606 // offsets at run-time. | |
| 607 static int _cp_oop_offset; | |
| 608 | |
| 609 static void compute_offsets(); | |
| 610 | |
| 611 public: | |
| 612 // Allocation | |
| 613 static Handle create(TRAPS); | |
| 614 | |
| 615 // Accessors | |
| 616 static oop cp_oop(oop reflect); | |
| 617 static void set_cp_oop(oop reflect, oop value); | |
| 618 static int cp_oop_offset() { | |
| 619 return _cp_oop_offset; | |
| 620 } | |
| 621 | |
| 622 // Debugging | |
| 623 friend class JavaClasses; | |
| 624 }; | |
| 625 | |
| 626 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects | |
| 627 class sun_reflect_UnsafeStaticFieldAccessorImpl { | |
| 628 private: | |
| 629 static int _base_offset; | |
| 630 static void compute_offsets(); | |
| 631 | |
| 632 public: | |
| 633 static int base_offset() { | |
| 634 return _base_offset; | |
| 635 } | |
| 636 | |
| 637 // Debugging | |
| 638 friend class JavaClasses; | |
| 639 }; | |
| 640 | |
| 641 // Interface to java.lang primitive type boxing objects: | |
| 642 // - java.lang.Boolean | |
| 643 // - java.lang.Character | |
| 644 // - java.lang.Float | |
| 645 // - java.lang.Double | |
| 646 // - java.lang.Byte | |
| 647 // - java.lang.Short | |
| 648 // - java.lang.Integer | |
| 649 // - java.lang.Long | |
| 650 | |
| 651 // This could be separated out into 8 individual classes. | |
| 652 | |
| 653 class java_lang_boxing_object: AllStatic { | |
| 654 private: | |
| 655 enum { | |
| 656 hc_value_offset = 0 | |
| 657 }; | |
| 658 static int value_offset; | |
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659 static int long_value_offset; |
| 0 | 660 |
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661 static oop initialize_and_allocate(BasicType type, TRAPS); |
| 0 | 662 public: |
| 663 // Allocation. Returns a boxed value, or NULL for invalid type. | |
| 664 static oop create(BasicType type, jvalue* value, TRAPS); | |
| 665 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. | |
| 666 static BasicType get_value(oop box, jvalue* value); | |
| 667 static BasicType set_value(oop box, jvalue* value); | |
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668 static BasicType basic_type(oop box); |
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669 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } |
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670 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } |
| 0 | 671 |
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672 static int value_offset_in_bytes(BasicType type) { |
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673 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset : |
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674 value_offset; |
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675 } |
| 0 | 676 |
| 677 // Debugging | |
| 678 friend class JavaClasses; | |
| 679 }; | |
| 680 | |
| 681 | |
| 682 | |
| 683 // Interface to java.lang.ref.Reference objects | |
| 684 | |
| 685 class java_lang_ref_Reference: AllStatic { | |
| 686 public: | |
| 687 enum { | |
| 688 hc_referent_offset = 0, | |
| 689 hc_queue_offset = 1, | |
| 690 hc_next_offset = 2, | |
| 691 hc_discovered_offset = 3 // Is not last, see SoftRefs. | |
| 692 }; | |
| 693 enum { | |
| 694 hc_static_lock_offset = 0, | |
| 695 hc_static_pending_offset = 1 | |
| 696 }; | |
| 697 | |
| 698 static int referent_offset; | |
| 699 static int queue_offset; | |
| 700 static int next_offset; | |
| 701 static int discovered_offset; | |
| 702 static int static_lock_offset; | |
| 703 static int static_pending_offset; | |
| 704 static int number_of_fake_oop_fields; | |
| 705 | |
| 706 // Accessors | |
|
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707 static oop referent(oop ref) { |
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708 return ref->obj_field(referent_offset); |
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709 } |
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710 static void set_referent(oop ref, oop value) { |
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711 ref->obj_field_put(referent_offset, value); |
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712 } |
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713 static void set_referent_raw(oop ref, oop value) { |
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714 ref->obj_field_raw_put(referent_offset, value); |
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715 } |
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716 static HeapWord* referent_addr(oop ref) { |
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717 return ref->obj_field_addr<HeapWord>(referent_offset); |
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718 } |
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719 static oop next(oop ref) { |
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720 return ref->obj_field(next_offset); |
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721 } |
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722 static void set_next(oop ref, oop value) { |
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723 ref->obj_field_put(next_offset, value); |
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724 } |
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725 static void set_next_raw(oop ref, oop value) { |
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726 ref->obj_field_raw_put(next_offset, value); |
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727 } |
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728 static HeapWord* next_addr(oop ref) { |
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729 return ref->obj_field_addr<HeapWord>(next_offset); |
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730 } |
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731 static oop discovered(oop ref) { |
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732 return ref->obj_field(discovered_offset); |
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733 } |
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734 static void set_discovered(oop ref, oop value) { |
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735 ref->obj_field_put(discovered_offset, value); |
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736 } |
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737 static void set_discovered_raw(oop ref, oop value) { |
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738 ref->obj_field_raw_put(discovered_offset, value); |
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739 } |
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740 static HeapWord* discovered_addr(oop ref) { |
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741 return ref->obj_field_addr<HeapWord>(discovered_offset); |
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742 } |
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743 // Accessors for statics |
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744 static oop pending_list_lock(); |
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745 static oop pending_list(); |
| 0 | 746 |
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747 static HeapWord* pending_list_addr(); |
| 0 | 748 }; |
| 749 | |
| 750 | |
| 751 // Interface to java.lang.ref.SoftReference objects | |
| 752 | |
| 753 class java_lang_ref_SoftReference: public java_lang_ref_Reference { | |
| 754 public: | |
| 755 enum { | |
| 756 // The timestamp is a long field and may need to be adjusted for alignment. | |
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757 hc_timestamp_offset = hc_discovered_offset + 1 |
| 0 | 758 }; |
| 759 enum { | |
| 760 hc_static_clock_offset = 0 | |
| 761 }; | |
| 762 | |
| 763 static int timestamp_offset; | |
| 764 static int static_clock_offset; | |
| 765 | |
| 766 // Accessors | |
| 767 static jlong timestamp(oop ref); | |
| 768 | |
| 769 // Accessors for statics | |
| 770 static jlong clock(); | |
| 771 static void set_clock(jlong value); | |
| 772 }; | |
| 773 | |
| 774 | |
| 775 // Interface to java.security.AccessControlContext objects | |
| 776 | |
| 777 class java_security_AccessControlContext: AllStatic { | |
| 778 private: | |
| 779 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
| 780 // so we compute the offsets at startup rather than hard-wiring them. | |
| 781 static int _context_offset; | |
| 782 static int _privilegedContext_offset; | |
| 783 static int _isPrivileged_offset; | |
| 784 | |
| 785 static void compute_offsets(); | |
| 786 public: | |
| 787 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); | |
| 788 | |
| 789 // Debugging/initialization | |
| 790 friend class JavaClasses; | |
| 791 }; | |
| 792 | |
| 793 | |
| 794 // Interface to java.lang.ClassLoader objects | |
| 795 | |
| 796 class java_lang_ClassLoader : AllStatic { | |
| 797 private: | |
| 798 enum { | |
| 799 hc_parent_offset = 0 | |
| 800 }; | |
| 801 | |
| 802 static int parent_offset; | |
| 803 | |
| 804 public: | |
| 805 static oop parent(oop loader); | |
| 806 | |
| 807 static bool is_trusted_loader(oop loader); | |
| 808 | |
| 809 // Fix for 4474172 | |
| 810 static oop non_reflection_class_loader(oop loader); | |
| 811 | |
| 812 // Debugging | |
| 813 friend class JavaClasses; | |
| 814 }; | |
| 815 | |
| 816 | |
| 817 // Interface to java.lang.System objects | |
| 818 | |
| 819 class java_lang_System : AllStatic { | |
| 820 private: | |
| 821 enum { | |
| 822 hc_static_in_offset = 0, | |
| 823 hc_static_out_offset = 1, | |
| 824 hc_static_err_offset = 2 | |
| 825 }; | |
| 826 | |
| 827 static int offset_of_static_fields; | |
| 828 static int static_in_offset; | |
| 829 static int static_out_offset; | |
| 830 static int static_err_offset; | |
| 831 | |
| 832 static void compute_offsets(); | |
| 833 | |
| 834 public: | |
| 835 static int in_offset_in_bytes(); | |
| 836 static int out_offset_in_bytes(); | |
| 837 static int err_offset_in_bytes(); | |
| 838 | |
| 839 // Debugging | |
| 840 friend class JavaClasses; | |
| 841 }; | |
| 842 | |
| 843 | |
| 844 // Interface to java.lang.StackTraceElement objects | |
| 845 | |
| 846 class java_lang_StackTraceElement: AllStatic { | |
| 847 private: | |
| 848 enum { | |
| 849 hc_declaringClass_offset = 0, | |
| 850 hc_methodName_offset = 1, | |
| 851 hc_fileName_offset = 2, | |
| 852 hc_lineNumber_offset = 3 | |
| 853 }; | |
| 854 | |
| 855 static int declaringClass_offset; | |
| 856 static int methodName_offset; | |
| 857 static int fileName_offset; | |
| 858 static int lineNumber_offset; | |
| 859 | |
| 860 public: | |
| 861 // Setters | |
| 862 static void set_declaringClass(oop element, oop value); | |
| 863 static void set_methodName(oop element, oop value); | |
| 864 static void set_fileName(oop element, oop value); | |
| 865 static void set_lineNumber(oop element, int value); | |
| 866 | |
| 867 // Create an instance of StackTraceElement | |
| 868 static oop create(methodHandle m, int bci, TRAPS); | |
| 869 | |
| 870 // Debugging | |
| 871 friend class JavaClasses; | |
| 872 }; | |
| 873 | |
| 874 | |
| 875 // Interface to java.lang.AssertionStatusDirectives objects | |
| 876 | |
| 877 class java_lang_AssertionStatusDirectives: AllStatic { | |
| 878 private: | |
| 879 enum { | |
| 880 hc_classes_offset, | |
| 881 hc_classEnabled_offset, | |
| 882 hc_packages_offset, | |
| 883 hc_packageEnabled_offset, | |
| 884 hc_deflt_offset | |
| 885 }; | |
| 886 | |
| 887 static int classes_offset; | |
| 888 static int classEnabled_offset; | |
| 889 static int packages_offset; | |
| 890 static int packageEnabled_offset; | |
| 891 static int deflt_offset; | |
| 892 | |
| 893 public: | |
| 894 // Setters | |
| 895 static void set_classes(oop obj, oop val); | |
| 896 static void set_classEnabled(oop obj, oop val); | |
| 897 static void set_packages(oop obj, oop val); | |
| 898 static void set_packageEnabled(oop obj, oop val); | |
| 899 static void set_deflt(oop obj, bool val); | |
| 900 // Debugging | |
| 901 friend class JavaClasses; | |
| 902 }; | |
| 903 | |
| 904 | |
| 905 class java_nio_Buffer: AllStatic { | |
| 906 private: | |
| 907 static int _limit_offset; | |
| 908 | |
| 909 public: | |
| 910 static int limit_offset(); | |
| 911 static void compute_offsets(); | |
| 912 }; | |
| 913 | |
| 914 class sun_misc_AtomicLongCSImpl: AllStatic { | |
| 915 private: | |
| 916 static int _value_offset; | |
| 917 | |
| 918 public: | |
| 919 static int value_offset(); | |
| 920 static void compute_offsets(); | |
| 921 }; | |
| 922 | |
| 923 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { | |
| 924 private: | |
| 925 static int _owner_offset; | |
| 926 public: | |
| 927 static void initialize(TRAPS); | |
| 928 static oop get_owner_threadObj(oop obj); | |
| 929 }; | |
| 930 | |
| 931 // Interface to hard-coded offset checking | |
| 932 | |
| 933 class JavaClasses : AllStatic { | |
| 934 private: | |
| 935 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; | |
| 936 static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; | |
|
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937 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
| 0 | 938 public: |
| 939 static void compute_hard_coded_offsets(); | |
| 940 static void compute_offsets(); | |
| 941 static void check_offsets() PRODUCT_RETURN; | |
| 942 }; |