Mercurial > hg > truffle
annotate src/share/vm/classfile/javaClasses.hpp @ 1039:987e948ebbc8
6815692: method handle code needs some cleanup (post-6655638)
Summary: correctly raise exceptions, support safe bitwise "raw" conversions, fix bugs revealed by VerifyMethodHandles, remove dead code, improve debugging support
Reviewed-by: never, twisti
| author | jrose |
|---|---|
| date | Sat, 17 Oct 2009 19:51:05 -0700 |
| parents | be93aad57795 |
| children | 389049f3f393 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 579 | 2 * Copyright 1997-2009 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); | |
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110 static symbolOop as_symbol_or_null(oop java_string); |
| 0 | 111 |
| 112 // Testers | |
| 113 static bool is_instance(oop obj) { | |
| 114 return obj != NULL && obj->klass() == SystemDictionary::string_klass(); | |
| 115 } | |
| 116 | |
| 117 // Debugging | |
| 118 static void print(Handle java_string, outputStream* st); | |
| 119 friend class JavaClasses; | |
| 120 }; | |
| 121 | |
| 122 | |
| 123 // Interface to java.lang.Class objects | |
| 124 | |
| 125 class java_lang_Class : AllStatic { | |
| 126 friend class VMStructs; | |
| 127 private: | |
| 128 // The fake offsets are added by the class loader when java.lang.Class is loaded | |
| 129 | |
| 130 enum { | |
| 131 hc_klass_offset = 0, | |
| 132 hc_array_klass_offset = 1, | |
| 133 hc_resolved_constructor_offset = 2, | |
| 134 hc_number_of_fake_oop_fields = 3 | |
| 135 }; | |
| 136 | |
| 137 static int klass_offset; | |
| 138 static int resolved_constructor_offset; | |
| 139 static int array_klass_offset; | |
| 140 static int number_of_fake_oop_fields; | |
| 141 | |
| 142 static void compute_offsets(); | |
| 143 static bool offsets_computed; | |
| 144 static int classRedefinedCount_offset; | |
| 514 | 145 static int parallelCapable_offset; |
| 0 | 146 |
| 147 public: | |
| 148 // Instance creation | |
| 149 static oop create_mirror(KlassHandle k, TRAPS); | |
| 150 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); | |
| 151 // Conversion | |
| 152 static klassOop as_klassOop(oop java_class); | |
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153 static BasicType as_BasicType(oop java_class, klassOop* reference_klass = NULL); |
| 710 | 154 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) { |
| 155 klassOop refk_oop = NULL; | |
| 156 BasicType result = as_BasicType(java_class, &refk_oop); | |
| 157 (*reference_klass) = KlassHandle(refk_oop); | |
| 158 return result; | |
| 159 } | |
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160 static symbolOop as_signature(oop java_class, bool intern_if_not_found, TRAPS); |
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161 static void print_signature(oop java_class, outputStream *st); |
| 0 | 162 // Testing |
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163 static bool is_instance(oop obj) { |
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164 return obj != NULL && obj->klass() == SystemDictionary::class_klass(); |
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165 } |
| 0 | 166 static bool is_primitive(oop java_class); |
| 167 static BasicType primitive_type(oop java_class); | |
| 168 static oop primitive_mirror(BasicType t); | |
| 169 // JVM_NewInstance support | |
| 170 static methodOop resolved_constructor(oop java_class); | |
| 171 static void set_resolved_constructor(oop java_class, methodOop constructor); | |
| 172 // JVM_NewArray support | |
| 173 static klassOop array_klass(oop java_class); | |
| 174 static void set_array_klass(oop java_class, klassOop klass); | |
| 175 // compiler support for class operations | |
| 176 static int klass_offset_in_bytes() { return klass_offset; } | |
| 177 static int resolved_constructor_offset_in_bytes() { return resolved_constructor_offset; } | |
| 178 static int array_klass_offset_in_bytes() { return array_klass_offset; } | |
| 179 // Support for classRedefinedCount field | |
| 180 static int classRedefinedCount(oop the_class_mirror); | |
| 181 static void set_classRedefinedCount(oop the_class_mirror, int value); | |
| 514 | 182 // Support for parallelCapable field |
| 183 static bool parallelCapable(oop the_class_mirror); | |
| 0 | 184 // Debugging |
| 185 friend class JavaClasses; | |
| 186 friend class instanceKlass; // verification code accesses offsets | |
| 187 friend class ClassFileParser; // access to number_of_fake_fields | |
| 188 }; | |
| 189 | |
| 190 // Interface to java.lang.Thread objects | |
| 191 | |
| 192 class java_lang_Thread : AllStatic { | |
| 193 private: | |
| 194 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
| 195 // so we compute the offsets at startup rather than hard-wiring them. | |
| 196 static int _name_offset; | |
| 197 static int _group_offset; | |
| 198 static int _contextClassLoader_offset; | |
| 199 static int _inheritedAccessControlContext_offset; | |
| 200 static int _priority_offset; | |
| 201 static int _eetop_offset; | |
| 202 static int _daemon_offset; | |
| 203 static int _stillborn_offset; | |
| 204 static int _stackSize_offset; | |
| 205 static int _tid_offset; | |
| 206 static int _thread_status_offset; | |
| 207 static int _park_blocker_offset; | |
| 208 static int _park_event_offset ; | |
| 209 | |
| 210 static void compute_offsets(); | |
| 211 | |
| 212 public: | |
| 213 // Instance creation | |
| 214 static oop create(); | |
| 215 // Returns the JavaThread associated with the thread obj | |
| 216 static JavaThread* thread(oop java_thread); | |
| 217 // Set JavaThread for instance | |
| 218 static void set_thread(oop java_thread, JavaThread* thread); | |
| 219 // Name | |
| 220 static typeArrayOop name(oop java_thread); | |
| 221 static void set_name(oop java_thread, typeArrayOop name); | |
| 222 // Priority | |
| 223 static ThreadPriority priority(oop java_thread); | |
| 224 static void set_priority(oop java_thread, ThreadPriority priority); | |
| 225 // Thread group | |
| 226 static oop threadGroup(oop java_thread); | |
| 227 // Stillborn | |
| 228 static bool is_stillborn(oop java_thread); | |
| 229 static void set_stillborn(oop java_thread); | |
| 230 // Alive (NOTE: this is not really a field, but provides the correct | |
| 231 // definition without doing a Java call) | |
| 232 static bool is_alive(oop java_thread); | |
| 233 // Daemon | |
| 234 static bool is_daemon(oop java_thread); | |
| 235 static void set_daemon(oop java_thread); | |
| 236 // Context ClassLoader | |
| 237 static oop context_class_loader(oop java_thread); | |
| 238 // Control context | |
| 239 static oop inherited_access_control_context(oop java_thread); | |
| 240 // Stack size hint | |
| 241 static jlong stackSize(oop java_thread); | |
| 242 // Thread ID | |
| 243 static jlong thread_id(oop java_thread); | |
| 244 | |
| 245 // Blocker object responsible for thread parking | |
| 246 static oop park_blocker(oop java_thread); | |
| 247 | |
| 248 // Pointer to type-stable park handler, encoded as jlong. | |
| 249 // Should be set when apparently null | |
| 250 // For details, see unsafe.cpp Unsafe_Unpark | |
| 251 static jlong park_event(oop java_thread); | |
| 252 static bool set_park_event(oop java_thread, jlong ptr); | |
| 253 | |
| 254 // Java Thread Status for JVMTI and M&M use. | |
| 255 // This thread status info is saved in threadStatus field of | |
| 256 // java.lang.Thread java class. | |
| 257 enum ThreadStatus { | |
| 258 NEW = 0, | |
| 259 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running | |
| 260 JVMTI_THREAD_STATE_RUNNABLE, | |
| 261 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep() | |
| 262 JVMTI_THREAD_STATE_WAITING + | |
| 263 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
| 264 JVMTI_THREAD_STATE_SLEEPING, | |
| 265 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait() | |
| 266 JVMTI_THREAD_STATE_WAITING + | |
| 267 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
| 268 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
| 269 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long) | |
| 270 JVMTI_THREAD_STATE_WAITING + | |
| 271 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
| 272 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
| 273 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park() | |
| 274 JVMTI_THREAD_STATE_WAITING + | |
| 275 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
| 276 JVMTI_THREAD_STATE_PARKED, | |
| 277 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long) | |
| 278 JVMTI_THREAD_STATE_WAITING + | |
| 279 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
| 280 JVMTI_THREAD_STATE_PARKED, | |
| 281 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block | |
| 282 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, | |
| 283 TERMINATED = JVMTI_THREAD_STATE_TERMINATED | |
| 284 }; | |
| 285 // Write thread status info to threadStatus field of java.lang.Thread. | |
| 286 static void set_thread_status(oop java_thread_oop, ThreadStatus status); | |
| 287 // Read thread status info from threadStatus field of java.lang.Thread. | |
| 288 static ThreadStatus get_thread_status(oop java_thread_oop); | |
| 289 | |
| 290 static const char* thread_status_name(oop java_thread_oop); | |
| 291 | |
| 292 // Debugging | |
| 293 friend class JavaClasses; | |
| 294 }; | |
| 295 | |
| 296 // Interface to java.lang.ThreadGroup objects | |
| 297 | |
| 298 class java_lang_ThreadGroup : AllStatic { | |
| 299 private: | |
| 300 static int _parent_offset; | |
| 301 static int _name_offset; | |
| 302 static int _threads_offset; | |
| 303 static int _groups_offset; | |
| 304 static int _maxPriority_offset; | |
| 305 static int _destroyed_offset; | |
| 306 static int _daemon_offset; | |
| 307 static int _vmAllowSuspension_offset; | |
| 308 static int _nthreads_offset; | |
| 309 static int _ngroups_offset; | |
| 310 | |
| 311 static void compute_offsets(); | |
| 312 | |
| 313 public: | |
| 314 // parent ThreadGroup | |
| 315 static oop parent(oop java_thread_group); | |
| 316 // name | |
| 317 static typeArrayOop name(oop java_thread_group); | |
| 318 // ("name as oop" accessor is not necessary) | |
| 319 // Number of threads in group | |
| 320 static int nthreads(oop java_thread_group); | |
| 321 // threads | |
| 322 static objArrayOop threads(oop java_thread_group); | |
| 323 // Number of threads in group | |
| 324 static int ngroups(oop java_thread_group); | |
| 325 // groups | |
| 326 static objArrayOop groups(oop java_thread_group); | |
| 327 // maxPriority in group | |
| 328 static ThreadPriority maxPriority(oop java_thread_group); | |
| 329 // Destroyed | |
| 330 static bool is_destroyed(oop java_thread_group); | |
| 331 // Daemon | |
| 332 static bool is_daemon(oop java_thread_group); | |
| 333 // vmAllowSuspension | |
| 334 static bool is_vmAllowSuspension(oop java_thread_group); | |
| 335 // Debugging | |
| 336 friend class JavaClasses; | |
| 337 }; | |
| 338 | |
| 339 | |
| 340 | |
| 341 // Interface to java.lang.Throwable objects | |
| 342 | |
| 343 class java_lang_Throwable: AllStatic { | |
| 344 friend class BacktraceBuilder; | |
| 345 | |
| 346 private: | |
| 347 // Offsets | |
| 348 enum { | |
| 349 hc_backtrace_offset = 0, | |
| 350 hc_detailMessage_offset = 1, | |
| 351 hc_cause_offset = 2, // New since 1.4 | |
| 352 hc_stackTrace_offset = 3 // New since 1.4 | |
| 353 }; | |
| 354 // Trace constants | |
| 355 enum { | |
| 356 trace_methods_offset = 0, | |
| 357 trace_bcis_offset = 1, | |
| 358 trace_next_offset = 2, | |
| 359 trace_size = 3, | |
| 360 trace_chunk_size = 32 | |
| 361 }; | |
| 362 | |
| 363 static int backtrace_offset; | |
| 364 static int detailMessage_offset; | |
| 365 static int cause_offset; | |
| 366 static int stackTrace_offset; | |
| 367 | |
| 368 // Printing | |
| 369 static char* print_stack_element_to_buffer(methodOop method, int bci); | |
| 370 static void print_to_stream(Handle stream, const char* str); | |
| 371 // StackTrace (programmatic access, new since 1.4) | |
| 372 static void clear_stacktrace(oop throwable); | |
| 373 // No stack trace available | |
| 374 static const char* no_stack_trace_message(); | |
| 375 | |
| 376 public: | |
| 377 // Backtrace | |
| 378 static oop backtrace(oop throwable); | |
| 379 static void set_backtrace(oop throwable, oop value); | |
| 380 // Needed by JVMTI to filter out this internal field. | |
| 381 static int get_backtrace_offset() { return backtrace_offset;} | |
| 382 static int get_detailMessage_offset() { return detailMessage_offset;} | |
| 383 // Message | |
| 384 static oop message(oop throwable); | |
| 385 static oop message(Handle throwable); | |
| 386 static void set_message(oop throwable, oop value); | |
| 387 // Print stack trace stored in exception by call-back to Java | |
| 388 // Note: this is no longer used in Merlin, but we still suppport | |
| 389 // it for compatibility. | |
| 390 static void print_stack_trace(oop throwable, oop print_stream); | |
| 391 static void print_stack_element(Handle stream, methodOop method, int bci); | |
| 392 static void print_stack_element(outputStream *st, methodOop method, int bci); | |
| 393 static void print_stack_usage(Handle stream); | |
| 394 | |
| 395 // Allocate space for backtrace (created but stack trace not filled in) | |
| 396 static void allocate_backtrace(Handle throwable, TRAPS); | |
| 397 // Fill in current stack trace for throwable with preallocated backtrace (no GC) | |
| 398 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); | |
| 399 | |
| 400 // Fill in current stack trace, can cause GC | |
| 401 static void fill_in_stack_trace(Handle throwable, TRAPS); | |
| 402 static void fill_in_stack_trace(Handle throwable); | |
| 403 // Programmatic access to stack trace | |
| 404 static oop get_stack_trace_element(oop throwable, int index, TRAPS); | |
| 405 static int get_stack_trace_depth(oop throwable, TRAPS); | |
| 406 // Printing | |
| 407 static void print(oop throwable, outputStream* st); | |
| 408 static void print(Handle throwable, outputStream* st); | |
| 409 static void print_stack_trace(oop throwable, outputStream* st); | |
| 410 // Debugging | |
| 411 friend class JavaClasses; | |
| 412 }; | |
| 413 | |
| 414 | |
| 415 // Interface to java.lang.reflect.AccessibleObject objects | |
| 416 | |
| 417 class java_lang_reflect_AccessibleObject: AllStatic { | |
| 418 private: | |
| 419 // Note that to reduce dependencies on the JDK we compute these | |
| 420 // offsets at run-time. | |
| 421 static int override_offset; | |
| 422 | |
| 423 static void compute_offsets(); | |
| 424 | |
| 425 public: | |
| 426 // Accessors | |
| 427 static jboolean override(oop reflect); | |
| 428 static void set_override(oop reflect, jboolean value); | |
| 429 | |
| 430 // Debugging | |
| 431 friend class JavaClasses; | |
| 432 }; | |
| 433 | |
| 434 | |
| 435 // Interface to java.lang.reflect.Method objects | |
| 436 | |
| 437 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { | |
| 438 private: | |
| 439 // Note that to reduce dependencies on the JDK we compute these | |
| 440 // offsets at run-time. | |
| 441 static int clazz_offset; | |
| 442 static int name_offset; | |
| 443 static int returnType_offset; | |
| 444 static int parameterTypes_offset; | |
| 445 static int exceptionTypes_offset; | |
| 446 static int slot_offset; | |
| 447 static int modifiers_offset; | |
| 448 static int signature_offset; | |
| 449 static int annotations_offset; | |
| 450 static int parameter_annotations_offset; | |
| 451 static int annotation_default_offset; | |
| 452 | |
| 453 static void compute_offsets(); | |
| 454 | |
| 455 public: | |
| 456 // Allocation | |
| 457 static Handle create(TRAPS); | |
| 458 | |
| 459 // Accessors | |
| 460 static oop clazz(oop reflect); | |
| 461 static void set_clazz(oop reflect, oop value); | |
| 462 | |
| 463 static oop name(oop method); | |
| 464 static void set_name(oop method, oop value); | |
| 465 | |
| 466 static oop return_type(oop method); | |
| 467 static void set_return_type(oop method, oop value); | |
| 468 | |
| 469 static oop parameter_types(oop method); | |
| 470 static void set_parameter_types(oop method, oop value); | |
| 471 | |
| 472 static oop exception_types(oop method); | |
| 473 static void set_exception_types(oop method, oop value); | |
| 474 | |
| 475 static int slot(oop reflect); | |
| 476 static void set_slot(oop reflect, int value); | |
| 477 | |
| 478 static int modifiers(oop method); | |
| 479 static void set_modifiers(oop method, int value); | |
| 480 | |
| 481 static bool has_signature_field(); | |
| 482 static oop signature(oop method); | |
| 483 static void set_signature(oop method, oop value); | |
| 484 | |
| 485 static bool has_annotations_field(); | |
| 486 static oop annotations(oop method); | |
| 487 static void set_annotations(oop method, oop value); | |
| 488 | |
| 489 static bool has_parameter_annotations_field(); | |
| 490 static oop parameter_annotations(oop method); | |
| 491 static void set_parameter_annotations(oop method, oop value); | |
| 492 | |
| 493 static bool has_annotation_default_field(); | |
| 494 static oop annotation_default(oop method); | |
| 495 static void set_annotation_default(oop method, oop value); | |
| 496 | |
| 497 // Debugging | |
| 498 friend class JavaClasses; | |
| 499 }; | |
| 500 | |
| 501 | |
| 502 // Interface to java.lang.reflect.Constructor objects | |
| 503 | |
| 504 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { | |
| 505 private: | |
| 506 // Note that to reduce dependencies on the JDK we compute these | |
| 507 // offsets at run-time. | |
| 508 static int clazz_offset; | |
| 509 static int parameterTypes_offset; | |
| 510 static int exceptionTypes_offset; | |
| 511 static int slot_offset; | |
| 512 static int modifiers_offset; | |
| 513 static int signature_offset; | |
| 514 static int annotations_offset; | |
| 515 static int parameter_annotations_offset; | |
| 516 | |
| 517 static void compute_offsets(); | |
| 518 | |
| 519 public: | |
| 520 // Allocation | |
| 521 static Handle create(TRAPS); | |
| 522 | |
| 523 // Accessors | |
| 524 static oop clazz(oop reflect); | |
| 525 static void set_clazz(oop reflect, oop value); | |
| 526 | |
| 527 static oop parameter_types(oop constructor); | |
| 528 static void set_parameter_types(oop constructor, oop value); | |
| 529 | |
| 530 static oop exception_types(oop constructor); | |
| 531 static void set_exception_types(oop constructor, oop value); | |
| 532 | |
| 533 static int slot(oop reflect); | |
| 534 static void set_slot(oop reflect, int value); | |
| 535 | |
| 536 static int modifiers(oop constructor); | |
| 537 static void set_modifiers(oop constructor, int value); | |
| 538 | |
| 539 static bool has_signature_field(); | |
| 540 static oop signature(oop constructor); | |
| 541 static void set_signature(oop constructor, oop value); | |
| 542 | |
| 543 static bool has_annotations_field(); | |
| 544 static oop annotations(oop constructor); | |
| 545 static void set_annotations(oop constructor, oop value); | |
| 546 | |
| 547 static bool has_parameter_annotations_field(); | |
| 548 static oop parameter_annotations(oop method); | |
| 549 static void set_parameter_annotations(oop method, oop value); | |
| 550 | |
| 551 // Debugging | |
| 552 friend class JavaClasses; | |
| 553 }; | |
| 554 | |
| 555 | |
| 556 // Interface to java.lang.reflect.Field objects | |
| 557 | |
| 558 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { | |
| 559 private: | |
| 560 // Note that to reduce dependencies on the JDK we compute these | |
| 561 // offsets at run-time. | |
| 562 static int clazz_offset; | |
| 563 static int name_offset; | |
| 564 static int type_offset; | |
| 565 static int slot_offset; | |
| 566 static int modifiers_offset; | |
| 567 static int signature_offset; | |
| 568 static int annotations_offset; | |
| 569 | |
| 570 static void compute_offsets(); | |
| 571 | |
| 572 public: | |
| 573 // Allocation | |
| 574 static Handle create(TRAPS); | |
| 575 | |
| 576 // Accessors | |
| 577 static oop clazz(oop reflect); | |
| 578 static void set_clazz(oop reflect, oop value); | |
| 579 | |
| 580 static oop name(oop field); | |
| 581 static void set_name(oop field, oop value); | |
| 582 | |
| 583 static oop type(oop field); | |
| 584 static void set_type(oop field, oop value); | |
| 585 | |
| 586 static int slot(oop reflect); | |
| 587 static void set_slot(oop reflect, int value); | |
| 588 | |
| 589 static int modifiers(oop field); | |
| 590 static void set_modifiers(oop field, int value); | |
| 591 | |
| 592 static bool has_signature_field(); | |
| 593 static oop signature(oop constructor); | |
| 594 static void set_signature(oop constructor, oop value); | |
| 595 | |
| 596 static bool has_annotations_field(); | |
| 597 static oop annotations(oop constructor); | |
| 598 static void set_annotations(oop constructor, oop value); | |
| 599 | |
| 600 static bool has_parameter_annotations_field(); | |
| 601 static oop parameter_annotations(oop method); | |
| 602 static void set_parameter_annotations(oop method, oop value); | |
| 603 | |
| 604 static bool has_annotation_default_field(); | |
| 605 static oop annotation_default(oop method); | |
| 606 static void set_annotation_default(oop method, oop value); | |
| 607 | |
| 608 // Debugging | |
| 609 friend class JavaClasses; | |
| 610 }; | |
| 611 | |
| 612 // Interface to sun.reflect.ConstantPool objects | |
| 613 class sun_reflect_ConstantPool { | |
| 614 private: | |
| 615 // Note that to reduce dependencies on the JDK we compute these | |
| 616 // offsets at run-time. | |
| 617 static int _cp_oop_offset; | |
| 618 | |
| 619 static void compute_offsets(); | |
| 620 | |
| 621 public: | |
| 622 // Allocation | |
| 623 static Handle create(TRAPS); | |
| 624 | |
| 625 // Accessors | |
| 626 static oop cp_oop(oop reflect); | |
| 627 static void set_cp_oop(oop reflect, oop value); | |
| 628 static int cp_oop_offset() { | |
| 629 return _cp_oop_offset; | |
| 630 } | |
| 631 | |
| 632 // Debugging | |
| 633 friend class JavaClasses; | |
| 634 }; | |
| 635 | |
| 636 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects | |
| 637 class sun_reflect_UnsafeStaticFieldAccessorImpl { | |
| 638 private: | |
| 639 static int _base_offset; | |
| 640 static void compute_offsets(); | |
| 641 | |
| 642 public: | |
| 643 static int base_offset() { | |
| 644 return _base_offset; | |
| 645 } | |
| 646 | |
| 647 // Debugging | |
| 648 friend class JavaClasses; | |
| 649 }; | |
| 650 | |
| 651 // Interface to java.lang primitive type boxing objects: | |
| 652 // - java.lang.Boolean | |
| 653 // - java.lang.Character | |
| 654 // - java.lang.Float | |
| 655 // - java.lang.Double | |
| 656 // - java.lang.Byte | |
| 657 // - java.lang.Short | |
| 658 // - java.lang.Integer | |
| 659 // - java.lang.Long | |
| 660 | |
| 661 // This could be separated out into 8 individual classes. | |
| 662 | |
| 663 class java_lang_boxing_object: AllStatic { | |
| 664 private: | |
| 665 enum { | |
| 666 hc_value_offset = 0 | |
| 667 }; | |
| 668 static int value_offset; | |
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669 static int long_value_offset; |
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671 static oop initialize_and_allocate(BasicType type, TRAPS); |
| 0 | 672 public: |
| 673 // Allocation. Returns a boxed value, or NULL for invalid type. | |
| 674 static oop create(BasicType type, jvalue* value, TRAPS); | |
| 675 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. | |
| 676 static BasicType get_value(oop box, jvalue* value); | |
| 677 static BasicType set_value(oop box, jvalue* value); | |
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678 static BasicType basic_type(oop box); |
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679 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } |
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680 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } |
|
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681 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } |
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682 static void print(BasicType type, jvalue* value, outputStream* st); |
| 0 | 683 |
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684 static int value_offset_in_bytes(BasicType type) { |
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685 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset : |
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686 value_offset; |
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687 } |
| 0 | 688 |
| 689 // Debugging | |
| 690 friend class JavaClasses; | |
| 691 }; | |
| 692 | |
| 693 | |
| 694 | |
| 695 // Interface to java.lang.ref.Reference objects | |
| 696 | |
| 697 class java_lang_ref_Reference: AllStatic { | |
| 698 public: | |
| 699 enum { | |
| 700 hc_referent_offset = 0, | |
| 701 hc_queue_offset = 1, | |
| 702 hc_next_offset = 2, | |
| 703 hc_discovered_offset = 3 // Is not last, see SoftRefs. | |
| 704 }; | |
| 705 enum { | |
| 706 hc_static_lock_offset = 0, | |
| 707 hc_static_pending_offset = 1 | |
| 708 }; | |
| 709 | |
| 710 static int referent_offset; | |
| 711 static int queue_offset; | |
| 712 static int next_offset; | |
| 713 static int discovered_offset; | |
| 714 static int static_lock_offset; | |
| 715 static int static_pending_offset; | |
| 716 static int number_of_fake_oop_fields; | |
| 717 | |
| 718 // Accessors | |
|
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719 static oop referent(oop ref) { |
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720 return ref->obj_field(referent_offset); |
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721 } |
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722 static void set_referent(oop ref, oop value) { |
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723 ref->obj_field_put(referent_offset, value); |
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724 } |
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725 static void set_referent_raw(oop ref, oop value) { |
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726 ref->obj_field_raw_put(referent_offset, value); |
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727 } |
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728 static HeapWord* referent_addr(oop ref) { |
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729 return ref->obj_field_addr<HeapWord>(referent_offset); |
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730 } |
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731 static oop next(oop ref) { |
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732 return ref->obj_field(next_offset); |
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733 } |
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734 static void set_next(oop ref, oop value) { |
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735 ref->obj_field_put(next_offset, value); |
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736 } |
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737 static void set_next_raw(oop ref, oop value) { |
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738 ref->obj_field_raw_put(next_offset, value); |
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739 } |
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740 static HeapWord* next_addr(oop ref) { |
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741 return ref->obj_field_addr<HeapWord>(next_offset); |
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742 } |
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743 static oop discovered(oop ref) { |
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744 return ref->obj_field(discovered_offset); |
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745 } |
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746 static void set_discovered(oop ref, oop value) { |
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747 ref->obj_field_put(discovered_offset, value); |
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748 } |
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749 static void set_discovered_raw(oop ref, oop value) { |
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750 ref->obj_field_raw_put(discovered_offset, value); |
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751 } |
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752 static HeapWord* discovered_addr(oop ref) { |
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753 return ref->obj_field_addr<HeapWord>(discovered_offset); |
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754 } |
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755 // Accessors for statics |
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756 static oop pending_list_lock(); |
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757 static oop pending_list(); |
| 0 | 758 |
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759 static HeapWord* pending_list_addr(); |
| 0 | 760 }; |
| 761 | |
| 762 | |
| 763 // Interface to java.lang.ref.SoftReference objects | |
| 764 | |
| 765 class java_lang_ref_SoftReference: public java_lang_ref_Reference { | |
| 766 public: | |
| 767 enum { | |
| 768 // The timestamp is a long field and may need to be adjusted for alignment. | |
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769 hc_timestamp_offset = hc_discovered_offset + 1 |
| 0 | 770 }; |
| 771 enum { | |
| 772 hc_static_clock_offset = 0 | |
| 773 }; | |
| 774 | |
| 775 static int timestamp_offset; | |
| 776 static int static_clock_offset; | |
| 777 | |
| 778 // Accessors | |
| 779 static jlong timestamp(oop ref); | |
| 780 | |
| 781 // Accessors for statics | |
| 782 static jlong clock(); | |
| 783 static void set_clock(jlong value); | |
| 784 }; | |
| 785 | |
| 786 | |
| 710 | 787 // Interface to java.dyn.MethodHandle objects |
| 788 | |
| 789 class MethodHandleEntry; | |
| 790 | |
| 791 class java_dyn_MethodHandle: AllStatic { | |
| 792 friend class JavaClasses; | |
| 793 | |
| 794 private: | |
| 795 static int _vmentry_offset; // assembly code trampoline for MH | |
| 796 static int _vmtarget_offset; // class-specific target reference | |
| 797 static int _type_offset; // the MethodType of this MH | |
| 798 static int _vmslots_offset; // OPTIONAL hoisted type.form.vmslots | |
| 799 | |
| 800 static void compute_offsets(); | |
| 801 | |
| 802 public: | |
| 803 // Accessors | |
| 804 static oop type(oop mh); | |
| 805 static void set_type(oop mh, oop mtype); | |
| 806 | |
| 807 static oop vmtarget(oop mh); | |
| 808 static void set_vmtarget(oop mh, oop target); | |
| 809 | |
| 810 static MethodHandleEntry* vmentry(oop mh); | |
| 811 static void set_vmentry(oop mh, MethodHandleEntry* data); | |
| 812 | |
| 813 static int vmslots(oop mh); | |
| 814 static void init_vmslots(oop mh); | |
| 815 static int compute_vmslots(oop mh); | |
| 816 | |
| 817 // Testers | |
| 818 static bool is_subclass(klassOop klass) { | |
| 819 return Klass::cast(klass)->is_subclass_of(SystemDictionary::MethodHandle_klass()); | |
| 820 } | |
| 821 static bool is_instance(oop obj) { | |
| 822 return obj != NULL && is_subclass(obj->klass()); | |
| 823 } | |
| 824 | |
| 825 // Accessors for code generation: | |
| 826 static int type_offset_in_bytes() { return _type_offset; } | |
| 827 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } | |
| 828 static int vmentry_offset_in_bytes() { return _vmentry_offset; } | |
| 829 static int vmslots_offset_in_bytes() { return _vmslots_offset; } | |
| 830 }; | |
| 831 | |
| 832 class sun_dyn_DirectMethodHandle: public java_dyn_MethodHandle { | |
| 833 friend class JavaClasses; | |
| 834 | |
| 835 private: | |
| 836 // _vmtarget_offset; // method or class or interface | |
| 837 static int _vmindex_offset; // negative or vtable idx or itable idx | |
| 838 static void compute_offsets(); | |
| 839 | |
| 840 public: | |
| 841 // Accessors | |
| 842 static int vmindex(oop mh); | |
| 843 static void set_vmindex(oop mh, int index); | |
| 844 | |
| 845 // Testers | |
| 846 static bool is_subclass(klassOop klass) { | |
| 847 return Klass::cast(klass)->is_subclass_of(SystemDictionary::DirectMethodHandle_klass()); | |
| 848 } | |
| 849 static bool is_instance(oop obj) { | |
| 850 return obj != NULL && is_subclass(obj->klass()); | |
| 851 } | |
| 852 | |
| 853 // Accessors for code generation: | |
| 854 static int vmindex_offset_in_bytes() { return _vmindex_offset; } | |
| 855 }; | |
| 856 | |
| 857 class sun_dyn_BoundMethodHandle: public java_dyn_MethodHandle { | |
| 858 friend class JavaClasses; | |
| 859 | |
| 860 private: | |
| 861 static int _argument_offset; // argument value bound into this MH | |
| 862 static int _vmargslot_offset; // relevant argument slot (<= vmslots) | |
| 863 static void compute_offsets(); | |
| 864 | |
| 865 public: | |
| 866 static oop argument(oop mh); | |
| 867 static void set_argument(oop mh, oop ref); | |
| 868 | |
| 869 static jint vmargslot(oop mh); | |
| 870 static void set_vmargslot(oop mh, jint slot); | |
| 871 | |
| 872 // Testers | |
| 873 static bool is_subclass(klassOop klass) { | |
| 874 return Klass::cast(klass)->is_subclass_of(SystemDictionary::BoundMethodHandle_klass()); | |
| 875 } | |
| 876 static bool is_instance(oop obj) { | |
| 877 return obj != NULL && is_subclass(obj->klass()); | |
| 878 } | |
| 879 | |
| 880 static int argument_offset_in_bytes() { return _argument_offset; } | |
| 881 static int vmargslot_offset_in_bytes() { return _vmargslot_offset; } | |
| 882 }; | |
| 883 | |
| 884 class sun_dyn_AdapterMethodHandle: public sun_dyn_BoundMethodHandle { | |
| 885 friend class JavaClasses; | |
| 886 | |
| 887 private: | |
| 888 static int _conversion_offset; // type of conversion to apply | |
| 889 static void compute_offsets(); | |
| 890 | |
| 891 public: | |
| 892 static int conversion(oop mh); | |
| 893 static void set_conversion(oop mh, int conv); | |
| 894 | |
| 895 // Testers | |
| 896 static bool is_subclass(klassOop klass) { | |
| 897 return Klass::cast(klass)->is_subclass_of(SystemDictionary::AdapterMethodHandle_klass()); | |
| 898 } | |
| 899 static bool is_instance(oop obj) { | |
| 900 return obj != NULL && is_subclass(obj->klass()); | |
| 901 } | |
| 902 | |
| 903 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): | |
| 904 enum { | |
| 905 OP_RETYPE_ONLY = 0x0, // no argument changes; straight retype | |
|
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906 OP_RETYPE_RAW = 0x1, // straight retype, trusted (void->int, Object->T) |
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907 OP_CHECK_CAST = 0x2, // ref-to-ref conversion; requires a Class argument |
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908 OP_PRIM_TO_PRIM = 0x3, // converts from one primitive to another |
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909 OP_REF_TO_PRIM = 0x4, // unboxes a wrapper to produce a primitive |
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910 OP_PRIM_TO_REF = 0x5, // boxes a primitive into a wrapper (NYI) |
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911 OP_SWAP_ARGS = 0x6, // swap arguments (vminfo is 2nd arg) |
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912 OP_ROT_ARGS = 0x7, // rotate arguments (vminfo is displaced arg) |
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913 OP_DUP_ARGS = 0x8, // duplicates one or more arguments (at TOS) |
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914 OP_DROP_ARGS = 0x9, // remove one or more argument slots |
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915 OP_COLLECT_ARGS = 0xA, // combine one or more arguments into a varargs (NYI) |
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916 OP_SPREAD_ARGS = 0xB, // expand in place a varargs array (of known size) |
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917 OP_FLYBY = 0xC, // operate first on reified argument list (NYI) |
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918 OP_RICOCHET = 0xD, // run an adapter chain on the return value (NYI) |
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919 CONV_OP_LIMIT = 0xE, // limit of CONV_OP enumeration |
| 710 | 920 |
| 921 CONV_OP_MASK = 0xF00, // this nybble contains the conversion op field | |
| 922 CONV_VMINFO_MASK = 0x0FF, // LSB is reserved for JVM use | |
| 923 CONV_VMINFO_SHIFT = 0, // position of bits in CONV_VMINFO_MASK | |
| 924 CONV_OP_SHIFT = 8, // position of bits in CONV_OP_MASK | |
| 925 CONV_DEST_TYPE_SHIFT = 12, // byte 2 has the adapter BasicType (if needed) | |
| 926 CONV_SRC_TYPE_SHIFT = 16, // byte 2 has the source BasicType (if needed) | |
| 927 CONV_STACK_MOVE_SHIFT = 20, // high 12 bits give signed SP change | |
| 928 CONV_STACK_MOVE_MASK = (1 << (32 - CONV_STACK_MOVE_SHIFT)) - 1 | |
| 929 }; | |
| 930 | |
| 931 static int conversion_offset_in_bytes() { return _conversion_offset; } | |
| 932 }; | |
| 933 | |
| 934 | |
| 935 // Interface to sun.dyn.MemberName objects | |
| 936 // (These are a private interface for Java code to query the class hierarchy.) | |
| 937 | |
| 938 class sun_dyn_MemberName: AllStatic { | |
| 939 friend class JavaClasses; | |
| 940 | |
| 941 private: | |
| 942 // From java.dyn.MemberName: | |
| 943 // private Class<?> clazz; // class in which the method is defined | |
| 944 // private String name; // may be null if not yet materialized | |
| 945 // private Object type; // may be null if not yet materialized | |
| 946 // private int flags; // modifier bits; see reflect.Modifier | |
| 947 // private Object vmtarget; // VM-specific target value | |
| 948 // private int vmindex; // method index within class or interface | |
| 949 static int _clazz_offset; | |
| 950 static int _name_offset; | |
| 951 static int _type_offset; | |
| 952 static int _flags_offset; | |
| 953 static int _vmtarget_offset; | |
| 954 static int _vmindex_offset; | |
| 955 | |
| 956 static void compute_offsets(); | |
| 957 | |
| 958 public: | |
| 959 // Accessors | |
| 960 static oop clazz(oop mname); | |
| 961 static void set_clazz(oop mname, oop clazz); | |
| 962 | |
| 963 static oop type(oop mname); | |
| 964 static void set_type(oop mname, oop type); | |
| 965 | |
| 966 static oop name(oop mname); | |
| 967 static void set_name(oop mname, oop name); | |
| 968 | |
| 969 static int flags(oop mname); | |
| 970 static void set_flags(oop mname, int flags); | |
| 971 | |
| 972 static int modifiers(oop mname) { return (u2) flags(mname); } | |
| 973 static void set_modifiers(oop mname, int mods) | |
| 974 { set_flags(mname, (flags(mname) &~ (u2)-1) | (u2)mods); } | |
| 975 | |
| 976 static oop vmtarget(oop mname); | |
| 977 static void set_vmtarget(oop mname, oop target); | |
| 978 | |
| 979 static int vmindex(oop mname); | |
| 980 static void set_vmindex(oop mname, int index); | |
| 981 | |
| 982 // Testers | |
| 983 static bool is_subclass(klassOop klass) { | |
| 984 return Klass::cast(klass)->is_subclass_of(SystemDictionary::MemberName_klass()); | |
| 985 } | |
| 986 static bool is_instance(oop obj) { | |
| 987 return obj != NULL && is_subclass(obj->klass()); | |
| 988 } | |
| 989 | |
| 990 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): | |
| 991 enum { | |
| 992 MN_IS_METHOD = 0x00010000, // method (not constructor) | |
| 993 MN_IS_CONSTRUCTOR = 0x00020000, // constructor | |
| 994 MN_IS_FIELD = 0x00040000, // field | |
| 995 MN_IS_TYPE = 0x00080000, // nested type | |
| 996 MN_SEARCH_SUPERCLASSES = 0x00100000, // for MHN.getMembers | |
| 997 MN_SEARCH_INTERFACES = 0x00200000, // for MHN.getMembers | |
| 998 VM_INDEX_UNINITIALIZED = -99 | |
| 999 }; | |
| 1000 | |
| 1001 // Accessors for code generation: | |
| 1002 static int clazz_offset_in_bytes() { return _clazz_offset; } | |
| 1003 static int type_offset_in_bytes() { return _type_offset; } | |
| 1004 static int name_offset_in_bytes() { return _name_offset; } | |
| 1005 static int flags_offset_in_bytes() { return _flags_offset; } | |
| 1006 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } | |
| 1007 static int vmindex_offset_in_bytes() { return _vmindex_offset; } | |
| 1008 }; | |
| 1009 | |
| 1010 | |
| 1011 // Interface to java.dyn.MethodType objects | |
| 1012 | |
| 1013 class java_dyn_MethodType: AllStatic { | |
| 1014 friend class JavaClasses; | |
| 1015 | |
| 1016 private: | |
| 1017 static int _rtype_offset; | |
| 1018 static int _ptypes_offset; | |
| 1019 static int _form_offset; | |
| 1020 | |
| 1021 static void compute_offsets(); | |
| 1022 | |
| 1023 public: | |
| 1024 // Accessors | |
| 1025 static oop rtype(oop mt); | |
| 1026 static objArrayOop ptypes(oop mt); | |
| 1027 static oop form(oop mt); | |
| 1028 | |
| 1029 static oop ptype(oop mt, int index); | |
| 1030 | |
| 1031 static symbolOop as_signature(oop mt, bool intern_if_not_found, TRAPS); | |
| 1032 static void print_signature(oop mt, outputStream* st); | |
| 1033 | |
| 1034 static bool is_instance(oop obj) { | |
| 1035 return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass(); | |
| 1036 } | |
| 1037 | |
| 1038 // Accessors for code generation: | |
| 1039 static int rtype_offset_in_bytes() { return _rtype_offset; } | |
| 1040 static int ptypes_offset_in_bytes() { return _ptypes_offset; } | |
| 1041 static int form_offset_in_bytes() { return _form_offset; } | |
| 1042 }; | |
| 1043 | |
| 1044 class java_dyn_MethodTypeForm: AllStatic { | |
| 1045 friend class JavaClasses; | |
| 1046 | |
| 1047 private: | |
| 1048 static int _vmslots_offset; // number of argument slots needed | |
| 1049 static int _erasedType_offset; // erasedType = canonical MethodType | |
| 1050 | |
| 1051 static void compute_offsets(); | |
| 1052 | |
| 1053 public: | |
| 1054 // Accessors | |
| 1055 static int vmslots(oop mtform); | |
| 1056 static oop erasedType(oop mtform); | |
| 1057 | |
| 1058 // Accessors for code generation: | |
| 1059 static int vmslots_offset_in_bytes() { return _vmslots_offset; } | |
| 1060 static int erasedType_offset_in_bytes() { return _erasedType_offset; } | |
| 1061 }; | |
| 1062 | |
| 1063 | |
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1064 // Interface to sun.dyn.CallSiteImpl objects |
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1065 |
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1066 class sun_dyn_CallSiteImpl: AllStatic { |
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1067 friend class JavaClasses; |
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1068 |
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1069 private: |
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1070 static int _type_offset; |
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1071 static int _target_offset; |
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1072 static int _vmmethod_offset; |
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1073 |
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1074 static void compute_offsets(); |
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1075 |
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1076 public: |
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1077 // Accessors |
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1078 static oop type(oop site); |
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1079 |
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1080 static oop target(oop site); |
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1081 static void set_target(oop site, oop target); |
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1082 |
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1083 static oop vmmethod(oop site); |
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1084 static void set_vmmethod(oop site, oop ref); |
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1085 |
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1086 // Accessors for code generation: |
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1087 static int target_offset_in_bytes() { return _target_offset; } |
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1088 static int type_offset_in_bytes() { return _type_offset; } |
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1089 static int vmmethod_offset_in_bytes() { return _vmmethod_offset; } |
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1090 }; |
| 710 | 1091 |
| 1092 | |
| 0 | 1093 // Interface to java.security.AccessControlContext objects |
| 1094 | |
| 1095 class java_security_AccessControlContext: AllStatic { | |
| 1096 private: | |
| 1097 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
| 1098 // so we compute the offsets at startup rather than hard-wiring them. | |
| 1099 static int _context_offset; | |
| 1100 static int _privilegedContext_offset; | |
| 1101 static int _isPrivileged_offset; | |
| 1102 | |
| 1103 static void compute_offsets(); | |
| 1104 public: | |
| 1105 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); | |
| 1106 | |
| 1107 // Debugging/initialization | |
| 1108 friend class JavaClasses; | |
| 1109 }; | |
| 1110 | |
| 1111 | |
| 1112 // Interface to java.lang.ClassLoader objects | |
| 1113 | |
| 1114 class java_lang_ClassLoader : AllStatic { | |
| 1115 private: | |
| 1116 enum { | |
| 1117 hc_parent_offset = 0 | |
| 1118 }; | |
| 1119 | |
| 1120 static int parent_offset; | |
| 1121 | |
| 1122 public: | |
| 1123 static oop parent(oop loader); | |
| 1124 | |
| 1125 static bool is_trusted_loader(oop loader); | |
| 1126 | |
| 1127 // Fix for 4474172 | |
| 1128 static oop non_reflection_class_loader(oop loader); | |
| 1129 | |
| 1130 // Debugging | |
| 1131 friend class JavaClasses; | |
| 1132 }; | |
| 1133 | |
| 1134 | |
| 1135 // Interface to java.lang.System objects | |
| 1136 | |
| 1137 class java_lang_System : AllStatic { | |
| 1138 private: | |
| 1139 enum { | |
| 1140 hc_static_in_offset = 0, | |
| 1141 hc_static_out_offset = 1, | |
| 1142 hc_static_err_offset = 2 | |
| 1143 }; | |
| 1144 | |
| 1145 static int offset_of_static_fields; | |
| 1146 static int static_in_offset; | |
| 1147 static int static_out_offset; | |
| 1148 static int static_err_offset; | |
| 1149 | |
| 1150 static void compute_offsets(); | |
| 1151 | |
| 1152 public: | |
| 1153 static int in_offset_in_bytes(); | |
| 1154 static int out_offset_in_bytes(); | |
| 1155 static int err_offset_in_bytes(); | |
| 1156 | |
| 1157 // Debugging | |
| 1158 friend class JavaClasses; | |
| 1159 }; | |
| 1160 | |
| 1161 | |
| 1162 // Interface to java.lang.StackTraceElement objects | |
| 1163 | |
| 1164 class java_lang_StackTraceElement: AllStatic { | |
| 1165 private: | |
| 1166 enum { | |
| 1167 hc_declaringClass_offset = 0, | |
| 1168 hc_methodName_offset = 1, | |
| 1169 hc_fileName_offset = 2, | |
| 1170 hc_lineNumber_offset = 3 | |
| 1171 }; | |
| 1172 | |
| 1173 static int declaringClass_offset; | |
| 1174 static int methodName_offset; | |
| 1175 static int fileName_offset; | |
| 1176 static int lineNumber_offset; | |
| 1177 | |
| 1178 public: | |
| 1179 // Setters | |
| 1180 static void set_declaringClass(oop element, oop value); | |
| 1181 static void set_methodName(oop element, oop value); | |
| 1182 static void set_fileName(oop element, oop value); | |
| 1183 static void set_lineNumber(oop element, int value); | |
| 1184 | |
| 1185 // Create an instance of StackTraceElement | |
| 1186 static oop create(methodHandle m, int bci, TRAPS); | |
| 1187 | |
| 1188 // Debugging | |
| 1189 friend class JavaClasses; | |
| 1190 }; | |
| 1191 | |
| 1192 | |
| 1193 // Interface to java.lang.AssertionStatusDirectives objects | |
| 1194 | |
| 1195 class java_lang_AssertionStatusDirectives: AllStatic { | |
| 1196 private: | |
| 1197 enum { | |
| 1198 hc_classes_offset, | |
| 1199 hc_classEnabled_offset, | |
| 1200 hc_packages_offset, | |
| 1201 hc_packageEnabled_offset, | |
| 1202 hc_deflt_offset | |
| 1203 }; | |
| 1204 | |
| 1205 static int classes_offset; | |
| 1206 static int classEnabled_offset; | |
| 1207 static int packages_offset; | |
| 1208 static int packageEnabled_offset; | |
| 1209 static int deflt_offset; | |
| 1210 | |
| 1211 public: | |
| 1212 // Setters | |
| 1213 static void set_classes(oop obj, oop val); | |
| 1214 static void set_classEnabled(oop obj, oop val); | |
| 1215 static void set_packages(oop obj, oop val); | |
| 1216 static void set_packageEnabled(oop obj, oop val); | |
| 1217 static void set_deflt(oop obj, bool val); | |
| 1218 // Debugging | |
| 1219 friend class JavaClasses; | |
| 1220 }; | |
| 1221 | |
| 1222 | |
| 1223 class java_nio_Buffer: AllStatic { | |
| 1224 private: | |
| 1225 static int _limit_offset; | |
| 1226 | |
| 1227 public: | |
| 1228 static int limit_offset(); | |
| 1229 static void compute_offsets(); | |
| 1230 }; | |
| 1231 | |
| 1232 class sun_misc_AtomicLongCSImpl: AllStatic { | |
| 1233 private: | |
| 1234 static int _value_offset; | |
| 1235 | |
| 1236 public: | |
| 1237 static int value_offset(); | |
| 1238 static void compute_offsets(); | |
| 1239 }; | |
| 1240 | |
| 1241 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { | |
| 1242 private: | |
| 1243 static int _owner_offset; | |
| 1244 public: | |
| 1245 static void initialize(TRAPS); | |
| 1246 static oop get_owner_threadObj(oop obj); | |
| 1247 }; | |
| 1248 | |
| 1249 // Interface to hard-coded offset checking | |
| 1250 | |
| 1251 class JavaClasses : AllStatic { | |
| 1252 private: | |
| 1253 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; | |
| 1254 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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1255 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
| 0 | 1256 public: |
| 1257 static void compute_hard_coded_offsets(); | |
| 1258 static void compute_offsets(); | |
| 1259 static void check_offsets() PRODUCT_RETURN; | |
| 1260 }; |