Mercurial > hg > truffle
annotate src/share/vm/classfile/javaClasses.hpp @ 6275:957c266d8bc5
Merge with http://hg.openjdk.java.net/hsx/hsx24/hotspot/
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Tue, 21 Aug 2012 10:39:19 +0200 |
| parents | 120820e30baa 1d7922586cf6 |
| children | e522a00b91aa |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 6057 | 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_CLASSFILE_JAVACLASSES_HPP |
| 26 #define SHARE_VM_CLASSFILE_JAVACLASSES_HPP | |
| 27 | |
| 28 #include "classfile/systemDictionary.hpp" | |
| 29 #include "jvmtifiles/jvmti.h" | |
| 30 #include "oops/oop.hpp" | |
| 31 #include "runtime/os.hpp" | |
| 32 #include "utilities/utf8.hpp" | |
| 33 | |
| 0 | 34 // Interface for manipulating the basic Java classes. |
| 35 // | |
| 36 // All dependencies on layout of actual Java classes should be kept here. | |
| 37 // If the layout of any of the classes above changes the offsets must be adjusted. | |
| 38 // | |
| 39 // For most classes we hardwire the offsets for performance reasons. In certain | |
| 40 // cases (e.g. java.security.AccessControlContext) we compute the offsets at | |
| 41 // startup since the layout here differs between JDK1.2 and JDK1.3. | |
| 42 // | |
| 43 // Note that fields (static and non-static) are arranged with oops before non-oops | |
| 44 // on a per class basis. The offsets below have to reflect this ordering. | |
| 45 // | |
| 46 // When editing the layouts please update the check_offset verification code | |
| 47 // correspondingly. The names in the enums must be identical to the actual field | |
| 48 // names in order for the verification code to work. | |
| 49 | |
| 50 | |
| 51 // Interface to java.lang.String objects | |
| 52 | |
| 53 class java_lang_String : AllStatic { | |
| 54 private: | |
| 55 static int value_offset; | |
| 56 static int offset_offset; | |
| 57 static int count_offset; | |
| 58 static int hash_offset; | |
| 59 | |
| 6057 | 60 static bool initialized; |
| 61 | |
| 0 | 62 static Handle basic_create(int length, bool tenured, TRAPS); |
| 63 static Handle basic_create_from_unicode(jchar* unicode, int length, bool tenured, TRAPS); | |
| 64 | |
| 6057 | 65 static void set_value( oop string, typeArrayOop buffer) { |
| 66 assert(initialized, "Must be initialized"); | |
| 67 string->obj_field_put(value_offset, (oop)buffer); | |
| 68 } | |
| 69 static void set_offset(oop string, int offset) { | |
| 70 assert(initialized, "Must be initialized"); | |
| 71 if (offset_offset > 0) { | |
| 72 string->int_field_put(offset_offset, offset); | |
| 73 } | |
| 74 } | |
| 75 static void set_count( oop string, int count) { | |
| 76 assert(initialized, "Must be initialized"); | |
| 77 if (count_offset > 0) { | |
| 78 string->int_field_put(count_offset, count); | |
| 79 } | |
| 80 } | |
| 0 | 81 |
| 82 public: | |
| 6057 | 83 static void compute_offsets(); |
| 84 | |
| 0 | 85 // Instance creation |
| 86 static Handle create_from_unicode(jchar* unicode, int len, TRAPS); | |
| 87 static Handle create_tenured_from_unicode(jchar* unicode, int len, TRAPS); | |
| 88 static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS); | |
| 89 static Handle create_from_str(const char* utf8_str, TRAPS); | |
| 90 static oop create_oop_from_str(const char* utf8_str, TRAPS); | |
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91 static Handle create_from_symbol(Symbol* symbol, TRAPS); |
| 0 | 92 static Handle create_from_platform_dependent_str(const char* str, TRAPS); |
| 93 static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS); | |
| 94 | |
| 6057 | 95 static bool has_offset_field() { |
| 96 assert(initialized, "Must be initialized"); | |
| 97 return (offset_offset > 0); | |
| 98 } | |
| 99 | |
| 100 static bool has_count_field() { | |
| 101 assert(initialized, "Must be initialized"); | |
| 102 return (count_offset > 0); | |
| 103 } | |
| 104 | |
| 105 static bool has_hash_field() { | |
| 106 assert(initialized, "Must be initialized"); | |
| 107 return (hash_offset > 0); | |
| 108 } | |
| 109 | |
| 110 static int value_offset_in_bytes() { | |
| 111 assert(initialized && (value_offset > 0), "Must be initialized"); | |
| 112 return value_offset; | |
| 113 } | |
| 114 static int count_offset_in_bytes() { | |
| 115 assert(initialized && (count_offset > 0), "Must be initialized"); | |
| 116 return count_offset; | |
| 117 } | |
| 118 static int offset_offset_in_bytes() { | |
| 119 assert(initialized && (offset_offset > 0), "Must be initialized"); | |
| 120 return offset_offset; | |
| 121 } | |
| 122 static int hash_offset_in_bytes() { | |
| 123 assert(initialized && (hash_offset > 0), "Must be initialized"); | |
| 124 return hash_offset; | |
| 125 } | |
| 0 | 126 |
| 127 // Accessors | |
| 128 static typeArrayOop value(oop java_string) { | |
| 6057 | 129 assert(initialized && (value_offset > 0), "Must be initialized"); |
| 0 | 130 assert(is_instance(java_string), "must be java_string"); |
| 131 return (typeArrayOop) java_string->obj_field(value_offset); | |
| 132 } | |
| 133 static int offset(oop java_string) { | |
| 6057 | 134 assert(initialized, "Must be initialized"); |
| 0 | 135 assert(is_instance(java_string), "must be java_string"); |
| 6057 | 136 if (offset_offset > 0) { |
| 137 return java_string->int_field(offset_offset); | |
| 138 } else { | |
| 139 return 0; | |
| 140 } | |
| 0 | 141 } |
| 142 static int length(oop java_string) { | |
| 6057 | 143 assert(initialized, "Must be initialized"); |
| 0 | 144 assert(is_instance(java_string), "must be java_string"); |
| 6057 | 145 if (count_offset > 0) { |
| 146 return java_string->int_field(count_offset); | |
| 147 } else { | |
| 148 return ((typeArrayOop)java_string->obj_field(value_offset))->length(); | |
| 149 } | |
| 0 | 150 } |
| 151 static int utf8_length(oop java_string); | |
| 152 | |
| 153 // String converters | |
| 154 static char* as_utf8_string(oop java_string); | |
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155 static char* as_utf8_string(oop java_string, char* buf, int buflen); |
| 0 | 156 static char* as_utf8_string(oop java_string, int start, int len); |
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157 static char* as_platform_dependent_str(Handle java_string, TRAPS); |
| 0 | 158 static jchar* as_unicode_string(oop java_string, int& length); |
| 159 | |
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160 // Compute the hash value for a java.lang.String object which would |
| 6162 | 161 // contain the characters passed in. |
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162 // |
| 6162 | 163 // As the hash value used by the String object itself, in |
| 164 // String.hashCode(). This value is normally calculated in Java code | |
| 165 // in the String.hashCode method(), but is precomputed for String | |
| 166 // objects in the shared archive file. | |
| 167 // hash P(31) from Kernighan & Ritchie | |
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168 // |
| 6162 | 169 // For this reason, THIS ALGORITHM MUST MATCH String.toHash(). |
| 170 template <typename T> static unsigned int to_hash(T* s, int len) { | |
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171 unsigned int h = 0; |
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172 while (len-- > 0) { |
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173 h = 31*h + (unsigned int) *s; |
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174 s++; |
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175 } |
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176 return h; |
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177 } |
| 6162 | 178 static unsigned int to_hash(oop java_string); |
| 179 | |
| 180 // This is the string hash code used by the StringTable, which may be | |
| 181 // the same as String.toHash or an alternate hash code. | |
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182 static unsigned int hash_string(oop java_string); |
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183 |
| 0 | 184 static bool equals(oop java_string, jchar* chars, int len); |
| 185 | |
| 186 // Conversion between '.' and '/' formats | |
| 187 static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); } | |
| 188 static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); } | |
| 189 | |
| 190 // Conversion | |
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191 static Symbol* as_symbol(Handle java_string, TRAPS); |
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192 static Symbol* as_symbol_or_null(oop java_string); |
| 0 | 193 |
| 194 // Testers | |
| 195 static bool is_instance(oop obj) { | |
| 1142 | 196 return obj != NULL && obj->klass() == SystemDictionary::String_klass(); |
| 0 | 197 } |
| 198 | |
| 199 // Debugging | |
| 200 static void print(Handle java_string, outputStream* st); | |
| 201 friend class JavaClasses; | |
| 202 }; | |
| 203 | |
| 204 | |
| 205 // Interface to java.lang.Class objects | |
| 206 | |
| 3938 | 207 #define CLASS_INJECTED_FIELDS(macro) \ |
| 208 macro(java_lang_Class, klass, object_signature, false) \ | |
| 209 macro(java_lang_Class, resolved_constructor, object_signature, false) \ | |
| 210 macro(java_lang_Class, array_klass, object_signature, false) \ | |
| 211 macro(java_lang_Class, oop_size, int_signature, false) \ | |
| 212 macro(java_lang_Class, static_oop_field_count, int_signature, false) | |
| 213 | |
| 0 | 214 class java_lang_Class : AllStatic { |
| 3938 | 215 friend class VMStructs; |
| 216 | |
| 0 | 217 private: |
| 218 // The fake offsets are added by the class loader when java.lang.Class is loaded | |
| 219 | |
| 3938 | 220 static int _klass_offset; |
| 221 static int _resolved_constructor_offset; | |
| 222 static int _array_klass_offset; | |
| 0 | 223 |
| 3938 | 224 static int _oop_size_offset; |
| 225 static int _static_oop_field_count_offset; | |
| 0 | 226 |
| 227 static bool offsets_computed; | |
| 228 static int classRedefinedCount_offset; | |
| 229 | |
| 230 public: | |
| 3938 | 231 static void compute_offsets(); |
| 232 | |
| 0 | 233 // Instance creation |
| 234 static oop create_mirror(KlassHandle k, TRAPS); | |
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235 static void fixup_mirror(KlassHandle k, TRAPS); |
| 0 | 236 static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS); |
| 237 // Conversion | |
| 238 static klassOop as_klassOop(oop java_class); | |
| 4009 | 239 static void set_klass(oop java_class, klassOop klass); |
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240 static BasicType as_BasicType(oop java_class, klassOop* reference_klass = NULL); |
| 710 | 241 static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) { |
| 242 klassOop refk_oop = NULL; | |
| 243 BasicType result = as_BasicType(java_class, &refk_oop); | |
| 244 (*reference_klass) = KlassHandle(refk_oop); | |
| 245 return result; | |
| 246 } | |
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247 static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS); |
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248 static void print_signature(oop java_class, outputStream *st); |
| 0 | 249 // Testing |
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250 static bool is_instance(oop obj) { |
| 1142 | 251 return obj != NULL && obj->klass() == SystemDictionary::Class_klass(); |
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252 } |
| 0 | 253 static bool is_primitive(oop java_class); |
| 254 static BasicType primitive_type(oop java_class); | |
| 255 static oop primitive_mirror(BasicType t); | |
| 256 // JVM_NewInstance support | |
| 257 static methodOop resolved_constructor(oop java_class); | |
| 258 static void set_resolved_constructor(oop java_class, methodOop constructor); | |
| 259 // JVM_NewArray support | |
| 260 static klassOop array_klass(oop java_class); | |
| 261 static void set_array_klass(oop java_class, klassOop klass); | |
| 262 // compiler support for class operations | |
| 3938 | 263 static int klass_offset_in_bytes() { return _klass_offset; } |
| 264 static int resolved_constructor_offset_in_bytes() { return _resolved_constructor_offset; } | |
| 265 static int array_klass_offset_in_bytes() { return _array_klass_offset; } | |
| 0 | 266 // Support for classRedefinedCount field |
| 267 static int classRedefinedCount(oop the_class_mirror); | |
| 268 static void set_classRedefinedCount(oop the_class_mirror, int value); | |
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269 |
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270 static int oop_size(oop java_class); |
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271 static void set_oop_size(oop java_class, int size); |
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272 static int static_oop_field_count(oop java_class); |
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273 static void set_static_oop_field_count(oop java_class, int size); |
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274 |
| 0 | 275 // Debugging |
| 276 friend class JavaClasses; | |
| 277 friend class instanceKlass; // verification code accesses offsets | |
| 278 friend class ClassFileParser; // access to number_of_fake_fields | |
| 279 }; | |
| 280 | |
| 281 // Interface to java.lang.Thread objects | |
| 282 | |
| 283 class java_lang_Thread : AllStatic { | |
| 284 private: | |
| 285 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
| 286 // so we compute the offsets at startup rather than hard-wiring them. | |
| 287 static int _name_offset; | |
| 288 static int _group_offset; | |
| 289 static int _contextClassLoader_offset; | |
| 290 static int _inheritedAccessControlContext_offset; | |
| 291 static int _priority_offset; | |
| 292 static int _eetop_offset; | |
| 293 static int _daemon_offset; | |
| 294 static int _stillborn_offset; | |
| 295 static int _stackSize_offset; | |
| 296 static int _tid_offset; | |
| 297 static int _thread_status_offset; | |
| 298 static int _park_blocker_offset; | |
| 299 static int _park_event_offset ; | |
| 300 | |
| 301 static void compute_offsets(); | |
| 302 | |
| 303 public: | |
| 304 // Instance creation | |
| 305 static oop create(); | |
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306 static int java_thread_offset_in_bytes() { return _eetop_offset; } |
| 0 | 307 // Returns the JavaThread associated with the thread obj |
| 308 static JavaThread* thread(oop java_thread); | |
| 309 // Set JavaThread for instance | |
| 310 static void set_thread(oop java_thread, JavaThread* thread); | |
| 311 // Name | |
| 312 static typeArrayOop name(oop java_thread); | |
| 313 static void set_name(oop java_thread, typeArrayOop name); | |
| 314 // Priority | |
| 315 static ThreadPriority priority(oop java_thread); | |
| 316 static void set_priority(oop java_thread, ThreadPriority priority); | |
| 317 // Thread group | |
| 318 static oop threadGroup(oop java_thread); | |
| 319 // Stillborn | |
| 320 static bool is_stillborn(oop java_thread); | |
| 321 static void set_stillborn(oop java_thread); | |
| 322 // Alive (NOTE: this is not really a field, but provides the correct | |
| 323 // definition without doing a Java call) | |
| 324 static bool is_alive(oop java_thread); | |
| 325 // Daemon | |
| 326 static bool is_daemon(oop java_thread); | |
| 327 static void set_daemon(oop java_thread); | |
| 328 // Context ClassLoader | |
| 329 static oop context_class_loader(oop java_thread); | |
| 330 // Control context | |
| 331 static oop inherited_access_control_context(oop java_thread); | |
| 332 // Stack size hint | |
| 333 static jlong stackSize(oop java_thread); | |
| 334 // Thread ID | |
| 335 static jlong thread_id(oop java_thread); | |
| 336 | |
| 337 // Blocker object responsible for thread parking | |
| 338 static oop park_blocker(oop java_thread); | |
| 339 | |
| 340 // Pointer to type-stable park handler, encoded as jlong. | |
| 341 // Should be set when apparently null | |
| 342 // For details, see unsafe.cpp Unsafe_Unpark | |
| 343 static jlong park_event(oop java_thread); | |
| 344 static bool set_park_event(oop java_thread, jlong ptr); | |
| 345 | |
| 346 // Java Thread Status for JVMTI and M&M use. | |
| 347 // This thread status info is saved in threadStatus field of | |
| 348 // java.lang.Thread java class. | |
| 349 enum ThreadStatus { | |
| 350 NEW = 0, | |
| 351 RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running | |
| 352 JVMTI_THREAD_STATE_RUNNABLE, | |
| 353 SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep() | |
| 354 JVMTI_THREAD_STATE_WAITING + | |
| 355 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
| 356 JVMTI_THREAD_STATE_SLEEPING, | |
| 357 IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait() | |
| 358 JVMTI_THREAD_STATE_WAITING + | |
| 359 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
| 360 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
| 361 IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long) | |
| 362 JVMTI_THREAD_STATE_WAITING + | |
| 363 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
| 364 JVMTI_THREAD_STATE_IN_OBJECT_WAIT, | |
| 365 PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park() | |
| 366 JVMTI_THREAD_STATE_WAITING + | |
| 367 JVMTI_THREAD_STATE_WAITING_INDEFINITELY + | |
| 368 JVMTI_THREAD_STATE_PARKED, | |
| 369 PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long) | |
| 370 JVMTI_THREAD_STATE_WAITING + | |
| 371 JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT + | |
| 372 JVMTI_THREAD_STATE_PARKED, | |
| 373 BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block | |
| 374 JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, | |
| 375 TERMINATED = JVMTI_THREAD_STATE_TERMINATED | |
| 376 }; | |
| 377 // Write thread status info to threadStatus field of java.lang.Thread. | |
| 378 static void set_thread_status(oop java_thread_oop, ThreadStatus status); | |
| 379 // Read thread status info from threadStatus field of java.lang.Thread. | |
| 380 static ThreadStatus get_thread_status(oop java_thread_oop); | |
| 381 | |
| 382 static const char* thread_status_name(oop java_thread_oop); | |
| 383 | |
| 384 // Debugging | |
| 385 friend class JavaClasses; | |
| 386 }; | |
| 387 | |
| 388 // Interface to java.lang.ThreadGroup objects | |
| 389 | |
| 390 class java_lang_ThreadGroup : AllStatic { | |
| 391 private: | |
| 392 static int _parent_offset; | |
| 393 static int _name_offset; | |
| 394 static int _threads_offset; | |
| 395 static int _groups_offset; | |
| 396 static int _maxPriority_offset; | |
| 397 static int _destroyed_offset; | |
| 398 static int _daemon_offset; | |
| 399 static int _vmAllowSuspension_offset; | |
| 400 static int _nthreads_offset; | |
| 401 static int _ngroups_offset; | |
| 402 | |
| 403 static void compute_offsets(); | |
| 404 | |
| 405 public: | |
| 406 // parent ThreadGroup | |
| 407 static oop parent(oop java_thread_group); | |
| 408 // name | |
| 409 static typeArrayOop name(oop java_thread_group); | |
| 410 // ("name as oop" accessor is not necessary) | |
| 411 // Number of threads in group | |
| 412 static int nthreads(oop java_thread_group); | |
| 413 // threads | |
| 414 static objArrayOop threads(oop java_thread_group); | |
| 415 // Number of threads in group | |
| 416 static int ngroups(oop java_thread_group); | |
| 417 // groups | |
| 418 static objArrayOop groups(oop java_thread_group); | |
| 419 // maxPriority in group | |
| 420 static ThreadPriority maxPriority(oop java_thread_group); | |
| 421 // Destroyed | |
| 422 static bool is_destroyed(oop java_thread_group); | |
| 423 // Daemon | |
| 424 static bool is_daemon(oop java_thread_group); | |
| 425 // vmAllowSuspension | |
| 426 static bool is_vmAllowSuspension(oop java_thread_group); | |
| 427 // Debugging | |
| 428 friend class JavaClasses; | |
| 429 }; | |
| 430 | |
| 431 | |
| 432 | |
| 433 // Interface to java.lang.Throwable objects | |
| 434 | |
| 435 class java_lang_Throwable: AllStatic { | |
| 436 friend class BacktraceBuilder; | |
| 437 | |
| 438 private: | |
| 439 // Offsets | |
| 440 enum { | |
| 441 hc_backtrace_offset = 0, | |
| 442 hc_detailMessage_offset = 1, | |
| 443 hc_cause_offset = 2, // New since 1.4 | |
| 444 hc_stackTrace_offset = 3 // New since 1.4 | |
| 445 }; | |
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446 enum { |
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447 hc_static_unassigned_stacktrace_offset = 0 // New since 1.7 |
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448 }; |
| 0 | 449 // Trace constants |
| 450 enum { | |
| 451 trace_methods_offset = 0, | |
| 452 trace_bcis_offset = 1, | |
| 453 trace_next_offset = 2, | |
| 454 trace_size = 3, | |
| 455 trace_chunk_size = 32 | |
| 456 }; | |
| 457 | |
| 458 static int backtrace_offset; | |
| 459 static int detailMessage_offset; | |
| 460 static int cause_offset; | |
| 461 static int stackTrace_offset; | |
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462 static int static_unassigned_stacktrace_offset; |
| 0 | 463 |
| 464 // Printing | |
| 465 static char* print_stack_element_to_buffer(methodOop method, int bci); | |
| 466 static void print_to_stream(Handle stream, const char* str); | |
| 467 // StackTrace (programmatic access, new since 1.4) | |
| 468 static void clear_stacktrace(oop throwable); | |
| 469 // No stack trace available | |
| 470 static const char* no_stack_trace_message(); | |
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471 // Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed) |
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472 static void set_stacktrace(oop throwable, oop st_element_array); |
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473 static oop unassigned_stacktrace(); |
| 0 | 474 |
| 475 public: | |
| 476 // Backtrace | |
| 477 static oop backtrace(oop throwable); | |
| 478 static void set_backtrace(oop throwable, oop value); | |
| 479 // Needed by JVMTI to filter out this internal field. | |
| 480 static int get_backtrace_offset() { return backtrace_offset;} | |
| 481 static int get_detailMessage_offset() { return detailMessage_offset;} | |
| 482 // Message | |
| 483 static oop message(oop throwable); | |
| 484 static oop message(Handle throwable); | |
| 485 static void set_message(oop throwable, oop value); | |
| 486 // Print stack trace stored in exception by call-back to Java | |
| 487 // Note: this is no longer used in Merlin, but we still suppport | |
| 488 // it for compatibility. | |
| 489 static void print_stack_trace(oop throwable, oop print_stream); | |
| 490 static void print_stack_element(Handle stream, methodOop method, int bci); | |
| 491 static void print_stack_element(outputStream *st, methodOop method, int bci); | |
| 492 static void print_stack_usage(Handle stream); | |
| 493 | |
| 494 // Allocate space for backtrace (created but stack trace not filled in) | |
| 495 static void allocate_backtrace(Handle throwable, TRAPS); | |
| 496 // Fill in current stack trace for throwable with preallocated backtrace (no GC) | |
| 497 static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable); | |
| 498 // Fill in current stack trace, can cause GC | |
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499 static void fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS); |
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500 static void fill_in_stack_trace(Handle throwable, methodHandle method = methodHandle()); |
| 0 | 501 // Programmatic access to stack trace |
| 502 static oop get_stack_trace_element(oop throwable, int index, TRAPS); | |
| 503 static int get_stack_trace_depth(oop throwable, TRAPS); | |
| 504 // Printing | |
| 505 static void print(oop throwable, outputStream* st); | |
| 506 static void print(Handle throwable, outputStream* st); | |
| 507 static void print_stack_trace(oop throwable, outputStream* st); | |
| 508 // Debugging | |
| 509 friend class JavaClasses; | |
| 510 }; | |
| 511 | |
| 512 | |
| 513 // Interface to java.lang.reflect.AccessibleObject objects | |
| 514 | |
| 515 class java_lang_reflect_AccessibleObject: AllStatic { | |
| 516 private: | |
| 517 // Note that to reduce dependencies on the JDK we compute these | |
| 518 // offsets at run-time. | |
| 519 static int override_offset; | |
| 520 | |
| 521 static void compute_offsets(); | |
| 522 | |
| 523 public: | |
| 524 // Accessors | |
| 525 static jboolean override(oop reflect); | |
| 526 static void set_override(oop reflect, jboolean value); | |
| 527 | |
| 528 // Debugging | |
| 529 friend class JavaClasses; | |
| 530 }; | |
| 531 | |
| 532 | |
| 533 // Interface to java.lang.reflect.Method objects | |
| 534 | |
| 535 class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject { | |
| 536 private: | |
| 537 // Note that to reduce dependencies on the JDK we compute these | |
| 538 // offsets at run-time. | |
| 539 static int clazz_offset; | |
| 540 static int name_offset; | |
| 541 static int returnType_offset; | |
| 542 static int parameterTypes_offset; | |
| 543 static int exceptionTypes_offset; | |
| 544 static int slot_offset; | |
| 545 static int modifiers_offset; | |
| 546 static int signature_offset; | |
| 547 static int annotations_offset; | |
| 548 static int parameter_annotations_offset; | |
| 549 static int annotation_default_offset; | |
| 550 | |
| 551 static void compute_offsets(); | |
| 552 | |
| 553 public: | |
| 554 // Allocation | |
| 555 static Handle create(TRAPS); | |
| 556 | |
| 557 // Accessors | |
| 558 static oop clazz(oop reflect); | |
| 559 static void set_clazz(oop reflect, oop value); | |
| 560 | |
| 561 static oop name(oop method); | |
| 562 static void set_name(oop method, oop value); | |
| 563 | |
| 564 static oop return_type(oop method); | |
| 565 static void set_return_type(oop method, oop value); | |
| 566 | |
| 567 static oop parameter_types(oop method); | |
| 568 static void set_parameter_types(oop method, oop value); | |
| 569 | |
| 570 static oop exception_types(oop method); | |
| 571 static void set_exception_types(oop method, oop value); | |
| 572 | |
| 573 static int slot(oop reflect); | |
| 574 static void set_slot(oop reflect, int value); | |
| 575 | |
| 576 static int modifiers(oop method); | |
| 577 static void set_modifiers(oop method, int value); | |
| 578 | |
| 579 static bool has_signature_field(); | |
| 580 static oop signature(oop method); | |
| 581 static void set_signature(oop method, oop value); | |
| 582 | |
| 583 static bool has_annotations_field(); | |
| 584 static oop annotations(oop method); | |
| 585 static void set_annotations(oop method, oop value); | |
| 586 | |
| 587 static bool has_parameter_annotations_field(); | |
| 588 static oop parameter_annotations(oop method); | |
| 589 static void set_parameter_annotations(oop method, oop value); | |
| 590 | |
| 591 static bool has_annotation_default_field(); | |
| 592 static oop annotation_default(oop method); | |
| 593 static void set_annotation_default(oop method, oop value); | |
| 594 | |
| 595 // Debugging | |
| 596 friend class JavaClasses; | |
| 597 }; | |
| 598 | |
| 599 | |
| 600 // Interface to java.lang.reflect.Constructor objects | |
| 601 | |
| 602 class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject { | |
| 603 private: | |
| 604 // Note that to reduce dependencies on the JDK we compute these | |
| 605 // offsets at run-time. | |
| 606 static int clazz_offset; | |
| 607 static int parameterTypes_offset; | |
| 608 static int exceptionTypes_offset; | |
| 609 static int slot_offset; | |
| 610 static int modifiers_offset; | |
| 611 static int signature_offset; | |
| 612 static int annotations_offset; | |
| 613 static int parameter_annotations_offset; | |
| 614 | |
| 615 static void compute_offsets(); | |
| 616 | |
| 617 public: | |
| 618 // Allocation | |
| 619 static Handle create(TRAPS); | |
| 620 | |
| 621 // Accessors | |
| 622 static oop clazz(oop reflect); | |
| 623 static void set_clazz(oop reflect, oop value); | |
| 624 | |
| 625 static oop parameter_types(oop constructor); | |
| 626 static void set_parameter_types(oop constructor, oop value); | |
| 627 | |
| 628 static oop exception_types(oop constructor); | |
| 629 static void set_exception_types(oop constructor, oop value); | |
| 630 | |
| 631 static int slot(oop reflect); | |
| 632 static void set_slot(oop reflect, int value); | |
| 633 | |
| 634 static int modifiers(oop constructor); | |
| 635 static void set_modifiers(oop constructor, int value); | |
| 636 | |
| 637 static bool has_signature_field(); | |
| 638 static oop signature(oop constructor); | |
| 639 static void set_signature(oop constructor, oop value); | |
| 640 | |
| 641 static bool has_annotations_field(); | |
| 642 static oop annotations(oop constructor); | |
| 643 static void set_annotations(oop constructor, oop value); | |
| 644 | |
| 645 static bool has_parameter_annotations_field(); | |
| 646 static oop parameter_annotations(oop method); | |
| 647 static void set_parameter_annotations(oop method, oop value); | |
| 648 | |
| 649 // Debugging | |
| 650 friend class JavaClasses; | |
| 651 }; | |
| 652 | |
| 653 | |
| 654 // Interface to java.lang.reflect.Field objects | |
| 655 | |
| 656 class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject { | |
| 657 private: | |
| 658 // Note that to reduce dependencies on the JDK we compute these | |
| 659 // offsets at run-time. | |
| 660 static int clazz_offset; | |
| 661 static int name_offset; | |
| 662 static int type_offset; | |
| 663 static int slot_offset; | |
| 664 static int modifiers_offset; | |
| 665 static int signature_offset; | |
| 666 static int annotations_offset; | |
| 667 | |
| 668 static void compute_offsets(); | |
| 669 | |
| 670 public: | |
| 671 // Allocation | |
| 672 static Handle create(TRAPS); | |
| 673 | |
| 674 // Accessors | |
| 675 static oop clazz(oop reflect); | |
| 676 static void set_clazz(oop reflect, oop value); | |
| 677 | |
| 678 static oop name(oop field); | |
| 679 static void set_name(oop field, oop value); | |
| 680 | |
| 681 static oop type(oop field); | |
| 682 static void set_type(oop field, oop value); | |
| 683 | |
| 684 static int slot(oop reflect); | |
| 685 static void set_slot(oop reflect, int value); | |
| 686 | |
| 687 static int modifiers(oop field); | |
| 688 static void set_modifiers(oop field, int value); | |
| 689 | |
| 690 static bool has_signature_field(); | |
| 691 static oop signature(oop constructor); | |
| 692 static void set_signature(oop constructor, oop value); | |
| 693 | |
| 694 static bool has_annotations_field(); | |
| 695 static oop annotations(oop constructor); | |
| 696 static void set_annotations(oop constructor, oop value); | |
| 697 | |
| 698 static bool has_parameter_annotations_field(); | |
| 699 static oop parameter_annotations(oop method); | |
| 700 static void set_parameter_annotations(oop method, oop value); | |
| 701 | |
| 702 static bool has_annotation_default_field(); | |
| 703 static oop annotation_default(oop method); | |
| 704 static void set_annotation_default(oop method, oop value); | |
| 705 | |
| 706 // Debugging | |
| 707 friend class JavaClasses; | |
| 708 }; | |
| 709 | |
| 710 // Interface to sun.reflect.ConstantPool objects | |
| 711 class sun_reflect_ConstantPool { | |
| 712 private: | |
| 713 // Note that to reduce dependencies on the JDK we compute these | |
| 714 // offsets at run-time. | |
| 715 static int _cp_oop_offset; | |
| 716 | |
| 717 static void compute_offsets(); | |
| 718 | |
| 719 public: | |
| 720 // Allocation | |
| 721 static Handle create(TRAPS); | |
| 722 | |
| 723 // Accessors | |
| 724 static oop cp_oop(oop reflect); | |
| 725 static void set_cp_oop(oop reflect, oop value); | |
| 726 static int cp_oop_offset() { | |
| 727 return _cp_oop_offset; | |
| 728 } | |
| 729 | |
| 730 // Debugging | |
| 731 friend class JavaClasses; | |
| 732 }; | |
| 733 | |
| 734 // Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects | |
| 735 class sun_reflect_UnsafeStaticFieldAccessorImpl { | |
| 736 private: | |
| 737 static int _base_offset; | |
| 738 static void compute_offsets(); | |
| 739 | |
| 740 public: | |
| 741 static int base_offset() { | |
| 742 return _base_offset; | |
| 743 } | |
| 744 | |
| 745 // Debugging | |
| 746 friend class JavaClasses; | |
| 747 }; | |
| 748 | |
| 749 // Interface to java.lang primitive type boxing objects: | |
| 750 // - java.lang.Boolean | |
| 751 // - java.lang.Character | |
| 752 // - java.lang.Float | |
| 753 // - java.lang.Double | |
| 754 // - java.lang.Byte | |
| 755 // - java.lang.Short | |
| 756 // - java.lang.Integer | |
| 757 // - java.lang.Long | |
| 758 | |
| 759 // This could be separated out into 8 individual classes. | |
| 760 | |
| 761 class java_lang_boxing_object: AllStatic { | |
| 762 private: | |
| 763 enum { | |
| 764 hc_value_offset = 0 | |
| 765 }; | |
| 766 static int value_offset; | |
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767 static int long_value_offset; |
| 0 | 768 |
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769 static oop initialize_and_allocate(BasicType type, TRAPS); |
| 0 | 770 public: |
| 771 // Allocation. Returns a boxed value, or NULL for invalid type. | |
| 772 static oop create(BasicType type, jvalue* value, TRAPS); | |
| 773 // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop. | |
| 774 static BasicType get_value(oop box, jvalue* value); | |
| 775 static BasicType set_value(oop box, jvalue* value); | |
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776 static BasicType basic_type(oop box); |
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777 static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; } |
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778 static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; } |
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779 static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); } |
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780 static void print(BasicType type, jvalue* value, outputStream* st); |
| 0 | 781 |
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782 static int value_offset_in_bytes(BasicType type) { |
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783 return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset : |
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784 value_offset; |
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785 } |
| 0 | 786 |
| 787 // Debugging | |
| 788 friend class JavaClasses; | |
| 789 }; | |
| 790 | |
| 791 | |
| 792 | |
| 793 // Interface to java.lang.ref.Reference objects | |
| 794 | |
| 795 class java_lang_ref_Reference: AllStatic { | |
| 796 public: | |
| 797 enum { | |
| 798 hc_referent_offset = 0, | |
| 799 hc_queue_offset = 1, | |
| 800 hc_next_offset = 2, | |
| 801 hc_discovered_offset = 3 // Is not last, see SoftRefs. | |
| 802 }; | |
| 803 enum { | |
| 804 hc_static_lock_offset = 0, | |
| 805 hc_static_pending_offset = 1 | |
| 806 }; | |
| 807 | |
| 808 static int referent_offset; | |
| 809 static int queue_offset; | |
| 810 static int next_offset; | |
| 811 static int discovered_offset; | |
| 812 static int static_lock_offset; | |
| 813 static int static_pending_offset; | |
| 814 static int number_of_fake_oop_fields; | |
| 815 | |
| 816 // Accessors | |
|
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817 static oop referent(oop ref) { |
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818 return ref->obj_field(referent_offset); |
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819 } |
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820 static void set_referent(oop ref, oop value) { |
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821 ref->obj_field_put(referent_offset, value); |
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822 } |
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823 static void set_referent_raw(oop ref, oop value) { |
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824 ref->obj_field_put_raw(referent_offset, value); |
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825 } |
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826 static HeapWord* referent_addr(oop ref) { |
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827 return ref->obj_field_addr<HeapWord>(referent_offset); |
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828 } |
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829 static oop next(oop ref) { |
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830 return ref->obj_field(next_offset); |
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831 } |
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832 static void set_next(oop ref, oop value) { |
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833 ref->obj_field_put(next_offset, value); |
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834 } |
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835 static void set_next_raw(oop ref, oop value) { |
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836 ref->obj_field_put_raw(next_offset, value); |
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837 } |
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838 static HeapWord* next_addr(oop ref) { |
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839 return ref->obj_field_addr<HeapWord>(next_offset); |
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840 } |
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841 static oop discovered(oop ref) { |
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842 return ref->obj_field(discovered_offset); |
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843 } |
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844 static void set_discovered(oop ref, oop value) { |
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845 ref->obj_field_put(discovered_offset, value); |
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846 } |
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847 static void set_discovered_raw(oop ref, oop value) { |
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848 ref->obj_field_put_raw(discovered_offset, value); |
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849 } |
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850 static HeapWord* discovered_addr(oop ref) { |
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851 return ref->obj_field_addr<HeapWord>(discovered_offset); |
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852 } |
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853 // Accessors for statics |
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854 static oop pending_list_lock(); |
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855 static oop pending_list(); |
| 0 | 856 |
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857 static HeapWord* pending_list_addr(); |
| 0 | 858 }; |
| 859 | |
| 860 | |
| 861 // Interface to java.lang.ref.SoftReference objects | |
| 862 | |
| 863 class java_lang_ref_SoftReference: public java_lang_ref_Reference { | |
| 864 public: | |
| 865 enum { | |
| 866 // The timestamp is a long field and may need to be adjusted for alignment. | |
|
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867 hc_timestamp_offset = hc_discovered_offset + 1 |
| 0 | 868 }; |
| 869 enum { | |
| 870 hc_static_clock_offset = 0 | |
| 871 }; | |
| 872 | |
| 873 static int timestamp_offset; | |
| 874 static int static_clock_offset; | |
| 875 | |
| 876 // Accessors | |
| 877 static jlong timestamp(oop ref); | |
| 878 | |
| 879 // Accessors for statics | |
| 880 static jlong clock(); | |
| 881 static void set_clock(jlong value); | |
| 882 }; | |
| 883 | |
| 884 | |
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885 // Interface to java.lang.invoke.MethodHandle objects |
| 710 | 886 |
| 887 class MethodHandleEntry; | |
| 888 | |
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889 class java_lang_invoke_MethodHandle: AllStatic { |
| 710 | 890 friend class JavaClasses; |
| 891 | |
| 892 private: | |
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893 static int _type_offset; // the MethodType of this MH |
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894 static int _form_offset; // the LambdaForm of this MH |
| 710 | 895 |
| 896 static void compute_offsets(); | |
| 897 | |
| 898 public: | |
| 899 // Accessors | |
| 900 static oop type(oop mh); | |
| 901 static void set_type(oop mh, oop mtype); | |
| 902 | |
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903 static oop form(oop mh); |
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904 static void set_form(oop mh, oop lform); |
| 710 | 905 |
| 906 // Testers | |
| 907 static bool is_subclass(klassOop klass) { | |
| 908 return Klass::cast(klass)->is_subclass_of(SystemDictionary::MethodHandle_klass()); | |
| 909 } | |
| 910 static bool is_instance(oop obj) { | |
| 911 return obj != NULL && is_subclass(obj->klass()); | |
| 912 } | |
| 913 | |
| 914 // Accessors for code generation: | |
| 915 static int type_offset_in_bytes() { return _type_offset; } | |
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916 static int form_offset_in_bytes() { return _form_offset; } |
| 710 | 917 }; |
| 918 | |
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919 // Interface to java.lang.invoke.LambdaForm objects |
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920 // (These are a private interface for managing adapter code generation.) |
| 3938 | 921 |
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922 class java_lang_invoke_LambdaForm: AllStatic { |
| 710 | 923 friend class JavaClasses; |
| 924 | |
| 925 private: | |
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926 static int _vmentry_offset; // type is MemberName |
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927 |
| 710 | 928 static void compute_offsets(); |
| 929 | |
| 930 public: | |
| 931 // Accessors | |
|
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932 static oop vmentry(oop lform); |
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933 static void set_vmentry(oop lform, oop invoker); |
| 710 | 934 |
| 935 // Testers | |
| 936 static bool is_subclass(klassOop klass) { | |
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937 return SystemDictionary::LambdaForm_klass() != NULL && |
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938 Klass::cast(klass)->is_subclass_of(SystemDictionary::LambdaForm_klass()); |
| 710 | 939 } |
| 940 static bool is_instance(oop obj) { | |
| 941 return obj != NULL && is_subclass(obj->klass()); | |
| 942 } | |
| 943 | |
| 944 // Accessors for code generation: | |
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945 static int vmentry_offset_in_bytes() { return _vmentry_offset; } |
| 710 | 946 }; |
| 947 | |
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948 |
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949 // Interface to java.lang.invoke.MemberName objects |
| 710 | 950 // (These are a private interface for Java code to query the class hierarchy.) |
| 951 | |
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952 #define MEMBERNAME_INJECTED_FIELDS(macro) \ |
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953 macro(java_lang_invoke_MemberName, vmindex, intptr_signature, false) \ |
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954 macro(java_lang_invoke_MemberName, vmtarget, object_signature, false) |
| 3938 | 955 |
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956 class java_lang_invoke_MemberName: AllStatic { |
| 710 | 957 friend class JavaClasses; |
| 958 | |
| 959 private: | |
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960 // From java.lang.invoke.MemberName: |
| 710 | 961 // private Class<?> clazz; // class in which the method is defined |
| 962 // private String name; // may be null if not yet materialized | |
| 963 // private Object type; // may be null if not yet materialized | |
| 964 // private int flags; // modifier bits; see reflect.Modifier | |
| 965 // private Object vmtarget; // VM-specific target value | |
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966 // private intptr_t vmindex; // member index within class or interface |
| 710 | 967 static int _clazz_offset; |
| 968 static int _name_offset; | |
| 969 static int _type_offset; | |
| 970 static int _flags_offset; | |
| 971 static int _vmtarget_offset; | |
| 972 static int _vmindex_offset; | |
| 973 | |
| 974 static void compute_offsets(); | |
| 975 | |
| 976 public: | |
| 977 // Accessors | |
| 978 static oop clazz(oop mname); | |
| 979 static void set_clazz(oop mname, oop clazz); | |
| 980 | |
| 981 static oop type(oop mname); | |
| 982 static void set_type(oop mname, oop type); | |
| 983 | |
| 984 static oop name(oop mname); | |
| 985 static void set_name(oop mname, oop name); | |
| 986 | |
| 987 static int flags(oop mname); | |
| 988 static void set_flags(oop mname, int flags); | |
| 989 | |
| 990 static oop vmtarget(oop mname); | |
| 991 static void set_vmtarget(oop mname, oop target); | |
| 992 | |
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993 static intptr_t vmindex(oop mname); |
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994 static void set_vmindex(oop mname, intptr_t index); |
| 710 | 995 |
| 996 // Testers | |
| 997 static bool is_subclass(klassOop klass) { | |
| 998 return Klass::cast(klass)->is_subclass_of(SystemDictionary::MemberName_klass()); | |
| 999 } | |
| 1000 static bool is_instance(oop obj) { | |
| 1001 return obj != NULL && is_subclass(obj->klass()); | |
| 1002 } | |
| 1003 | |
| 1004 // Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants): | |
| 1005 enum { | |
| 1006 MN_IS_METHOD = 0x00010000, // method (not constructor) | |
| 1007 MN_IS_CONSTRUCTOR = 0x00020000, // constructor | |
| 1008 MN_IS_FIELD = 0x00040000, // field | |
| 1009 MN_IS_TYPE = 0x00080000, // nested type | |
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1010 MN_REFERENCE_KIND_SHIFT = 24, // refKind |
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1011 MN_REFERENCE_KIND_MASK = 0x0F000000 >> MN_REFERENCE_KIND_SHIFT, |
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1012 // The SEARCH_* bits are not for MN.flags but for the matchFlags argument of MHN.getMembers: |
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1013 MN_SEARCH_SUPERCLASSES = 0x00100000, // walk super classes |
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1014 MN_SEARCH_INTERFACES = 0x00200000 // walk implemented interfaces |
| 710 | 1015 }; |
| 1016 | |
| 1017 // Accessors for code generation: | |
| 1018 static int clazz_offset_in_bytes() { return _clazz_offset; } | |
| 1019 static int type_offset_in_bytes() { return _type_offset; } | |
| 1020 static int name_offset_in_bytes() { return _name_offset; } | |
| 1021 static int flags_offset_in_bytes() { return _flags_offset; } | |
| 1022 static int vmtarget_offset_in_bytes() { return _vmtarget_offset; } | |
| 1023 static int vmindex_offset_in_bytes() { return _vmindex_offset; } | |
| 1024 }; | |
| 1025 | |
| 1026 | |
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1027 // Interface to java.lang.invoke.MethodType objects |
| 710 | 1028 |
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1029 class java_lang_invoke_MethodType: AllStatic { |
| 710 | 1030 friend class JavaClasses; |
| 1031 | |
| 1032 private: | |
| 1033 static int _rtype_offset; | |
| 1034 static int _ptypes_offset; | |
| 1035 | |
| 1036 static void compute_offsets(); | |
| 1037 | |
| 1038 public: | |
| 1039 // Accessors | |
| 1040 static oop rtype(oop mt); | |
| 1041 static objArrayOop ptypes(oop mt); | |
| 1042 | |
| 1043 static oop ptype(oop mt, int index); | |
|
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1044 static int ptype_count(oop mt); |
| 710 | 1045 |
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1046 static int ptype_slot_count(oop mt); // extra counts for long/double |
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1047 static int rtype_slot_count(oop mt); // extra counts for long/double |
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1048 |
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1049 static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS); |
| 710 | 1050 static void print_signature(oop mt, outputStream* st); |
| 1051 | |
| 1052 static bool is_instance(oop obj) { | |
| 1053 return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass(); | |
| 1054 } | |
| 1055 | |
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1056 static bool equals(oop mt1, oop mt2); |
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1057 |
| 710 | 1058 // Accessors for code generation: |
| 1059 static int rtype_offset_in_bytes() { return _rtype_offset; } | |
| 1060 static int ptypes_offset_in_bytes() { return _ptypes_offset; } | |
| 1061 }; | |
| 1062 | |
| 1063 | |
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1064 // Interface to java.lang.invoke.CallSite objects |
|
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1065 |
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1066 class java_lang_invoke_CallSite: 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 _target_offset; |
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1071 |
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1072 static void compute_offsets(); |
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1073 |
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1074 public: |
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1075 // Accessors |
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1076 static oop target( oop site) { return site->obj_field( _target_offset); } |
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1077 static void set_target( oop site, oop target) { site->obj_field_put( _target_offset, target); } |
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1078 |
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1079 static volatile oop target_volatile(oop site) { return site->obj_field_volatile( _target_offset); } |
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1080 static void set_target_volatile(oop site, oop target) { site->obj_field_put_volatile(_target_offset, target); } |
|
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1081 |
|
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1082 // Testers |
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1083 static bool is_subclass(klassOop klass) { |
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1084 return Klass::cast(klass)->is_subclass_of(SystemDictionary::CallSite_klass()); |
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1085 } |
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1086 static bool is_instance(oop obj) { |
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1087 return obj != NULL && is_subclass(obj->klass()); |
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1088 } |
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1089 |
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1090 // Accessors for code generation: |
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1091 static int target_offset_in_bytes() { return _target_offset; } |
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1092 }; |
| 710 | 1093 |
| 1094 | |
| 0 | 1095 // Interface to java.security.AccessControlContext objects |
| 1096 | |
| 1097 class java_security_AccessControlContext: AllStatic { | |
| 1098 private: | |
| 1099 // Note that for this class the layout changed between JDK1.2 and JDK1.3, | |
| 1100 // so we compute the offsets at startup rather than hard-wiring them. | |
| 1101 static int _context_offset; | |
| 1102 static int _privilegedContext_offset; | |
| 1103 static int _isPrivileged_offset; | |
| 1104 | |
| 1105 static void compute_offsets(); | |
| 1106 public: | |
| 1107 static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS); | |
| 1108 | |
| 1109 // Debugging/initialization | |
| 1110 friend class JavaClasses; | |
| 1111 }; | |
| 1112 | |
| 1113 | |
| 1114 // Interface to java.lang.ClassLoader objects | |
| 1115 | |
| 1116 class java_lang_ClassLoader : AllStatic { | |
| 1117 private: | |
| 1118 enum { | |
| 1119 hc_parent_offset = 0 | |
| 1120 }; | |
| 1121 | |
| 3938 | 1122 static bool offsets_computed; |
| 0 | 1123 static int parent_offset; |
| 3938 | 1124 static int parallelCapable_offset; |
| 1125 | |
| 1126 static void compute_offsets(); | |
| 0 | 1127 |
| 1128 public: | |
| 1129 static oop parent(oop loader); | |
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1130 static bool isAncestor(oop loader, oop cl); |
| 0 | 1131 |
| 3938 | 1132 // Support for parallelCapable field |
| 1133 static bool parallelCapable(oop the_class_mirror); | |
| 1134 | |
| 0 | 1135 static bool is_trusted_loader(oop loader); |
| 1136 | |
| 1137 // Fix for 4474172 | |
| 1138 static oop non_reflection_class_loader(oop loader); | |
| 1139 | |
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1140 // Testers |
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1141 static bool is_subclass(klassOop klass) { |
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1142 return Klass::cast(klass)->is_subclass_of(SystemDictionary::ClassLoader_klass()); |
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1143 } |
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1144 static bool is_instance(oop obj) { |
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1145 return obj != NULL && is_subclass(obj->klass()); |
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1146 } |
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1147 |
| 0 | 1148 // Debugging |
| 1149 friend class JavaClasses; | |
| 1150 }; | |
| 1151 | |
| 1152 | |
| 1153 // Interface to java.lang.System objects | |
| 1154 | |
| 1155 class java_lang_System : AllStatic { | |
| 1156 private: | |
| 1157 enum { | |
| 1158 hc_static_in_offset = 0, | |
| 1159 hc_static_out_offset = 1, | |
| 1160 hc_static_err_offset = 2 | |
| 1161 }; | |
| 1162 | |
| 1163 static int static_in_offset; | |
| 1164 static int static_out_offset; | |
| 1165 static int static_err_offset; | |
| 1166 | |
| 1167 public: | |
| 1168 static int in_offset_in_bytes(); | |
| 1169 static int out_offset_in_bytes(); | |
| 1170 static int err_offset_in_bytes(); | |
| 1171 | |
| 1172 // Debugging | |
| 1173 friend class JavaClasses; | |
| 1174 }; | |
| 1175 | |
| 1176 | |
| 1177 // Interface to java.lang.StackTraceElement objects | |
| 1178 | |
| 1179 class java_lang_StackTraceElement: AllStatic { | |
| 1180 private: | |
| 1181 enum { | |
| 1182 hc_declaringClass_offset = 0, | |
| 1183 hc_methodName_offset = 1, | |
| 1184 hc_fileName_offset = 2, | |
| 1185 hc_lineNumber_offset = 3 | |
| 1186 }; | |
| 1187 | |
| 1188 static int declaringClass_offset; | |
| 1189 static int methodName_offset; | |
| 1190 static int fileName_offset; | |
| 1191 static int lineNumber_offset; | |
| 1192 | |
| 1193 public: | |
| 1194 // Setters | |
| 1195 static void set_declaringClass(oop element, oop value); | |
| 1196 static void set_methodName(oop element, oop value); | |
| 1197 static void set_fileName(oop element, oop value); | |
| 1198 static void set_lineNumber(oop element, int value); | |
| 1199 | |
| 1200 // Create an instance of StackTraceElement | |
| 1201 static oop create(methodHandle m, int bci, TRAPS); | |
| 1202 | |
| 1203 // Debugging | |
| 1204 friend class JavaClasses; | |
| 1205 }; | |
| 1206 | |
| 1207 | |
| 1208 // Interface to java.lang.AssertionStatusDirectives objects | |
| 1209 | |
| 1210 class java_lang_AssertionStatusDirectives: AllStatic { | |
| 1211 private: | |
| 1212 enum { | |
| 1213 hc_classes_offset, | |
| 1214 hc_classEnabled_offset, | |
| 1215 hc_packages_offset, | |
| 1216 hc_packageEnabled_offset, | |
| 1217 hc_deflt_offset | |
| 1218 }; | |
| 1219 | |
| 1220 static int classes_offset; | |
| 1221 static int classEnabled_offset; | |
| 1222 static int packages_offset; | |
| 1223 static int packageEnabled_offset; | |
| 1224 static int deflt_offset; | |
| 1225 | |
| 1226 public: | |
| 1227 // Setters | |
| 1228 static void set_classes(oop obj, oop val); | |
| 1229 static void set_classEnabled(oop obj, oop val); | |
| 1230 static void set_packages(oop obj, oop val); | |
| 1231 static void set_packageEnabled(oop obj, oop val); | |
| 1232 static void set_deflt(oop obj, bool val); | |
| 1233 // Debugging | |
| 1234 friend class JavaClasses; | |
| 1235 }; | |
| 1236 | |
| 1237 | |
| 1238 class java_nio_Buffer: AllStatic { | |
| 1239 private: | |
| 1240 static int _limit_offset; | |
| 1241 | |
| 1242 public: | |
| 1243 static int limit_offset(); | |
| 1244 static void compute_offsets(); | |
| 1245 }; | |
| 1246 | |
| 1247 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic { | |
| 1248 private: | |
| 1249 static int _owner_offset; | |
| 1250 public: | |
| 1251 static void initialize(TRAPS); | |
| 1252 static oop get_owner_threadObj(oop obj); | |
| 1253 }; | |
| 1254 | |
| 3938 | 1255 // Use to declare fields that need to be injected into Java classes |
| 1256 // for the JVM to use. The name_index and signature_index are | |
| 1257 // declared in vmSymbols. The may_be_java flag is used to declare | |
| 1258 // fields that might already exist in Java but should be injected if | |
| 1259 // they don't. Otherwise the field is unconditionally injected and | |
| 1260 // the JVM uses the injected one. This is to ensure that name | |
| 1261 // collisions don't occur. In general may_be_java should be false | |
| 1262 // unless there's a good reason. | |
| 1263 | |
| 1264 class InjectedField { | |
| 1265 public: | |
| 1266 const SystemDictionary::WKID klass_id; | |
| 1267 const vmSymbols::SID name_index; | |
| 1268 const vmSymbols::SID signature_index; | |
| 1269 const bool may_be_java; | |
| 1270 | |
| 1271 | |
| 1272 klassOop klass() const { return SystemDictionary::well_known_klass(klass_id); } | |
| 1273 Symbol* name() const { return lookup_symbol(name_index); } | |
| 1274 Symbol* signature() const { return lookup_symbol(signature_index); } | |
| 1275 | |
| 1276 int compute_offset(); | |
| 1277 | |
| 1278 // Find the Symbol for this index | |
| 1279 static Symbol* lookup_symbol(int symbol_index) { | |
| 1280 return vmSymbols::symbol_at((vmSymbols::SID)symbol_index); | |
| 1281 } | |
| 1282 }; | |
| 1283 | |
| 1284 #define DECLARE_INJECTED_FIELD_ENUM(klass, name, signature, may_be_java) \ | |
| 1285 klass##_##name##_enum, | |
| 1286 | |
| 1287 #define ALL_INJECTED_FIELDS(macro) \ | |
| 1288 CLASS_INJECTED_FIELDS(macro) \ | |
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1289 MEMBERNAME_INJECTED_FIELDS(macro) |
| 3938 | 1290 |
| 0 | 1291 // Interface to hard-coded offset checking |
| 1292 | |
| 1293 class JavaClasses : AllStatic { | |
| 1294 private: | |
| 3938 | 1295 |
| 1296 static InjectedField _injected_fields[]; | |
| 1297 | |
| 0 | 1298 static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
| 1299 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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1300 static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0; |
| 3938 | 1301 |
| 0 | 1302 public: |
| 3938 | 1303 enum InjectedFieldID { |
| 1304 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM) | |
| 1305 MAX_enum | |
| 1306 }; | |
| 1307 | |
| 1308 static int compute_injected_offset(InjectedFieldID id); | |
| 1309 | |
| 0 | 1310 static void compute_hard_coded_offsets(); |
| 1311 static void compute_offsets(); | |
| 1312 static void check_offsets() PRODUCT_RETURN; | |
| 3938 | 1313 |
| 1314 static InjectedField* get_injected(Symbol* class_name, int* field_count); | |
| 0 | 1315 }; |
| 1972 | 1316 |
| 3938 | 1317 #undef DECLARE_INJECTED_FIELD_ENUM |
| 1318 | |
| 1972 | 1319 #endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP |