libjava/java/lang/Class.h

   1 // Class.h - Header file for java.lang.Class.  -*- c++ -*-
   2
   3 /* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006  Free Software Foundation
   4
   5    This file is part of libgcj.
   6
   7 This software is copyrighted work licensed under the terms of the
   8 Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
   9 details.  */
  10
  11 // Written primary using compiler source and Class.java as guides.
  12 #ifndef __JAVA_LANG_CLASS_H__
  13 #define __JAVA_LANG_CLASS_H__
  14
  15 #pragma interface
  16
  17 #include <stddef.h>
  18 #include <java/lang/Object.h>
  19 #include <java/lang/String.h>
  20 #include <java/net/URL.h>
  21 #include <java/lang/reflect/Modifier.h>
  22 #include <java/security/ProtectionDomain.h>
  23 #include <java/lang/Package.h>
  24
  25 // Avoid including SystemClassLoader.h.
  26 extern "Java"
  27 {
  28   namespace gnu
  29   {
  30     namespace gcj
  31     {
  32       namespace runtime
  33       {
  34         class SystemClassLoader;
  35       }
  36     }
  37   }
  38 }
  39
  40 // We declare these here to avoid including gcj/cni.h.
  41 extern "C" void _Jv_InitClass (jclass klass);
  42 extern "C" jclass _Jv_NewClassFromInitializer
  43    (const char *class_initializer);
  44 extern "C" void _Jv_RegisterNewClasses (char **classes);
  45 extern "C" void _Jv_RegisterClasses (const jclass *classes);
  46 extern "C" void _Jv_RegisterClasses_Counted (const jclass *classes,
  47                                              size_t count);
  48
  49 // This must be predefined with "C" linkage.
  50 extern "C" void *_Jv_LookupInterfaceMethodIdx (jclass klass, jclass iface,
  51                                                int meth_idx);
  52 extern "C" void *_Jv_ResolvePoolEntry (jclass this_class, jint index);
  53
  54 // These are the possible values for the `state' field of the class
  55 // structure.  Note that ordering is important here.  Whenever the
  56 // state changes, one should notify all waiters of this class.
  57 enum
  58 {
  59   JV_STATE_NOTHING = 0,         // Set by compiler.
  60
  61   JV_STATE_PRELOADING = 1,      // Can do _Jv_FindClass.
  62
  63   // There is an invariant through libgcj that a class will always be
  64   // at a state greater than or equal to JV_STATE_LOADING when it is
  65   // returned by a class loader to user code.  Hence, defineclass.cc
  66   // installs supers before returning a class, C++-ABI-compiled
  67   // classes are created with supers installed, and BC-ABI-compiled
  68   // classes are linked to this state before being returned by their
  69   // class loader.
  70   JV_STATE_LOADING = 3,         // Has super installed.
  71   JV_STATE_READ = 4,            // Has been completely defined.
  72   JV_STATE_LOADED = 5,          // Has Miranda methods defined.
  73
  74   JV_STATE_COMPILED = 6,        // This was a compiled class.
  75
  76   JV_STATE_PREPARED = 7,        // Layout & static init done.
  77   JV_STATE_LINKED = 9,          // Strings interned.
  78
  79   JV_STATE_IN_PROGRESS = 10,    // <clinit> running.
  80
  81   JV_STATE_ERROR = 12,
  82
  83   JV_STATE_PHANTOM = 13,        // Bytecode is missing. In many cases we can
  84                                 // work around that. If not, throw a
  85                                 // NoClassDefFoundError.
  86
  87   JV_STATE_DONE = 14,           // Must be last.
  88
  89
  90 };
  91
  92 struct _Jv_Field;
  93 struct _Jv_VTable;
  94 union _Jv_word;
  95 struct _Jv_ArrayVTable;
  96 class _Jv_Linker;
  97 class _Jv_ExecutionEngine;
  98 class _Jv_CompiledEngine;
  99 class _Jv_IndirectCompiledEngine;
 100 class _Jv_InterpreterEngine;
 101
 102 #ifdef INTERPRETER
 103 class _Jv_ClassReader;
 104 class _Jv_InterpClass;
 105 class _Jv_InterpMethod;
 106 #endif
 107
 108 struct _Jv_Constants
 109 {
 110   jint size;
 111   jbyte *tags;
 112   _Jv_word *data;
 113 };
 114
 115 struct _Jv_Method
 116 {
 117   // Method name.
 118   _Jv_Utf8Const *name;
 119   // Method signature.
 120   _Jv_Utf8Const *signature;
 121   // Access flags.
 122   _Jv_ushort accflags;
 123   // Method's index in the vtable.
 124   _Jv_ushort index;
 125   // Pointer to underlying function.
 126   void *ncode;
 127   // NULL-terminated list of exception class names; can be NULL if
 128   // there are none such.
 129   _Jv_Utf8Const **throws;
 130
 131   _Jv_Method *getNextMethod ()
 132   { return this + 1; }
 133 };
 134
 135 // The table used to resolve interface calls.
 136 struct _Jv_IDispatchTable
 137 {
 138   // Index into interface's ioffsets.
 139   jshort iindex;
 140   jshort itable_length;
 141   // Class Interface dispatch table.
 142   void *itable[0];
 143 };
 144
 145 // Used by _Jv_Linker::get_interfaces ()
 146 struct _Jv_ifaces
 147 {
 148   jclass *list;
 149   jshort len;
 150   jshort count;
 151 };
 152
 153 struct _Jv_MethodSymbol
 154 {
 155   _Jv_Utf8Const *class_name;
 156   _Jv_Utf8Const *name;
 157   _Jv_Utf8Const *signature;
 158 };
 159
 160 struct _Jv_OffsetTable
 161 {
 162   jint state;
 163   jint offsets[];
 164 };
 165
 166 struct _Jv_AddressTable
 167 {
 168   jint state;
 169   void *addresses[];
 170 };
 171
 172 struct _Jv_CatchClass
 173 {
 174   java::lang::Class **address;
 175   _Jv_Utf8Const *classname;
 176 };
 177
 178 // Possible values for the assertion_code field in the type assertion table.
 179 enum
 180 {
 181   JV_ASSERT_END_OF_TABLE = 0,
 182   JV_ASSERT_TYPES_COMPATIBLE = 1,
 183   JV_ASSERT_IS_INSTANTIABLE = 2
 184 };
 185
 186 // Entry in the type assertion table, used to validate type constraints
 187 // for binary compatibility.
 188 struct _Jv_TypeAssertion
 189 {
 190   jint assertion_code;
 191   _Jv_Utf8Const *op1;
 192   _Jv_Utf8Const *op2;
 193 };
 194
 195 #define JV_PRIMITIVE_VTABLE ((_Jv_VTable *) -1)
 196
 197 #define JV_CLASS(Obj) ((jclass) (*(_Jv_VTable **) Obj)->clas)
 198
 199 // Forward declarations for friends of java::lang::Class
 200
 201 // Friend functions implemented in natClass.cc.
 202 _Jv_Method *_Jv_GetMethodLocal (jclass klass, _Jv_Utf8Const *name,
 203                                 _Jv_Utf8Const *signature);
 204 jboolean _Jv_IsAssignableFrom (jclass, jclass);
 205 jboolean _Jv_IsAssignableFromSlow (jclass, jclass);
 206 jboolean _Jv_InterfaceAssignableFrom (jclass, jclass);
 207
 208 _Jv_Method* _Jv_LookupDeclaredMethod (jclass, _Jv_Utf8Const *,
 209                                       _Jv_Utf8Const*, jclass * = NULL);
 210 jfieldID JvGetFirstInstanceField (jclass);
 211 jint JvNumInstanceFields (jclass);
 212 jfieldID JvGetFirstStaticField (jclass);
 213 jint JvNumStaticFields (jclass);
 214
 215 jobject _Jv_AllocObject (jclass);
 216 void *_Jv_AllocObj (jint, jclass);
 217 void *_Jv_AllocPtrFreeObj (jint, jclass);
 218 void *_Jv_AllocArray (jint, jclass);
 219
 220 bool _Jv_getInterfaceMethod(jclass, jclass&, int&,
 221                             const _Jv_Utf8Const*,
 222                             const _Jv_Utf8Const*);
 223
 224 jobject _Jv_JNI_ToReflectedField (_Jv_JNIEnv *, jclass, jfieldID,
 225                                   jboolean);
 226 jobject _Jv_JNI_ToReflectedMethod (_Jv_JNIEnv *, jclass, jmethodID,
 227                                    jboolean);
 228 jfieldID _Jv_FromReflectedField (java::lang::reflect::Field *);
 229
 230 jmethodID _Jv_FromReflectedMethod (java::lang::reflect::Method *);
 231 jmethodID _Jv_FromReflectedConstructor (java::lang::reflect::Constructor *);
 232 jint JvNumMethods (jclass);
 233 jmethodID JvGetFirstMethod (jclass);
 234 _Jv_Utf8Const *_Jv_GetClassNameUtf8 (jclass);
 235
 236 #ifdef INTERPRETER
 237 // Finds a desired interpreter method in the given class or NULL if not found
 238 class _Jv_MethodBase;
 239 _Jv_MethodBase *_Jv_FindInterpreterMethod (jclass, jmethodID);
 240 #endif
 241
 242 // Friend classes and functions to implement the ClassLoader
 243 class java::lang::ClassLoader;
 244 class java::lang::VMClassLoader;
 245
 246 class java::io::ObjectOutputStream;
 247 class java::io::ObjectInputStream;
 248 class java::io::ObjectStreamClass;
 249
 250 void _Jv_RegisterClassHookDefault (jclass klass);
 251 void _Jv_RegisterInitiatingLoader (jclass,java::lang::ClassLoader*);
 252 void _Jv_UnregisterInitiatingLoader (jclass,java::lang::ClassLoader*);
 253 void _Jv_UnregisterClass (jclass);
 254 jclass _Jv_FindClassNoException (_Jv_Utf8Const *name,
 255                       java::lang::ClassLoader *loader);
 256 jclass _Jv_FindClass (_Jv_Utf8Const *name,
 257                       java::lang::ClassLoader *loader);
 258 jclass _Jv_FindClassInCache (_Jv_Utf8Const *name);
 259 jclass _Jv_PopClass (void);
 260 void _Jv_PushClass (jclass k);
 261 void _Jv_NewArrayClass (jclass element,
 262                         java::lang::ClassLoader *loader,
 263                         _Jv_VTable *array_vtable = 0);
 264 jclass _Jv_NewClass (_Jv_Utf8Const *name, jclass superclass,
 265                      java::lang::ClassLoader *loader);
 266 void _Jv_InitNewClassFields (jclass klass);
 267
 268 // Friend functions and classes in prims.cc
 269 void _Jv_InitPrimClass (jclass, const char *, char, int);
 270 jstring _Jv_GetMethodString (jclass, _Jv_Method *, jclass = NULL);
 271
 272 jboolean _Jv_CheckAccess (jclass self_klass, jclass other_klass,
 273                           jint flags);
 274 jclass _Jv_GetArrayClass (jclass klass, java::lang::ClassLoader *loader);
 275
 276 jboolean _Jv_IsInterpretedClass (jclass);
 277 jboolean _Jv_IsBinaryCompatibilityABI (jclass);
 278
 279 jboolean _Jv_IsPhantomClass (jclass);
 280
 281 void _Jv_CopyClassesToSystemLoader (gnu::gcj::runtime::SystemClassLoader *);
 282
 283 #ifdef INTERPRETER
 284 void _Jv_InitField (jobject, jclass, int);
 285 #endif
 286
 287 class _Jv_StackTrace;
 288 class _Jv_BytecodeVerifier;
 289 class java::io::VMObjectStreamClass;
 290
 291 void _Jv_sharedlib_register_hook (jclass klass);
 292
 293
 294 class java::lang::Class : public java::lang::Object
 295 {
 296 public:
 297   static jclass forName (jstring className, jboolean initialize,
 298                          java::lang::ClassLoader *loader);
 299   static jclass forName (jstring className);
 300   JArray<jclass> *getClasses (void);
 301
 302   java::lang::ClassLoader *getClassLoader (void);
 303 private:
 304   java::lang::ClassLoader *getClassLoader (jclass caller);
 305 public:
 306   // This is an internal method that circumvents the usual security
 307   // checks when getting the class loader.
 308   java::lang::ClassLoader *getClassLoaderInternal (void)
 309   {
 310     return loader;
 311   }
 312
 313   java::lang::reflect::Constructor *getConstructor (JArray<jclass> *);
 314   JArray<java::lang::reflect::Constructor *> *getConstructors (void);
 315   java::lang::reflect::Constructor *getDeclaredConstructor (JArray<jclass> *);
 316   JArray<java::lang::reflect::Constructor *> *getDeclaredConstructors (jboolean);
 317   java::lang::reflect::Field *getDeclaredField (jstring);
 318   JArray<java::lang::reflect::Field *> *getDeclaredFields ();
 319   JArray<java::lang::reflect::Field *> *getDeclaredFields (jboolean);
 320   java::lang::reflect::Method *getDeclaredMethod (jstring, JArray<jclass> *);
 321   JArray<java::lang::reflect::Method *> *getDeclaredMethods (void);
 322
 323   JArray<jclass> *getDeclaredClasses (void);
 324   JArray<jclass> *getDeclaredClasses (jboolean);
 325   jclass getDeclaringClass (void);
 326
 327   java::lang::reflect::Field *getField (jstring);
 328 private:
 329   JArray<java::lang::reflect::Field *> internalGetFields ();
 330   java::lang::reflect::Field *getField (jstring, jint);
 331   jint _getMethods (JArray<java::lang::reflect::Method *> *result,
 332                     jint offset);
 333   java::lang::reflect::Field *getPrivateField (jstring);
 334   java::lang::reflect::Method *getPrivateMethod (jstring, JArray<jclass> *);
 335   java::security::ProtectionDomain *getProtectionDomain0 ();
 336
 337   java::lang::reflect::Method *_getMethod (jstring, JArray<jclass> *);
 338   java::lang::reflect::Method *_getDeclaredMethod (jstring, JArray<jclass> *);
 339
 340 public:
 341   JArray<java::lang::reflect::Field *> *getFields (void);
 342
 343   JArray<jclass> *getInterfaces (void);
 344
 345   void getSignature (java::lang::StringBuffer *buffer);
 346   static jstring getSignature (JArray<jclass> *, jboolean is_constructor);
 347   JArray<java::lang::reflect::Method *> *getMethods (void);
 348
 349   inline jint getModifiers (void)
 350   {
 351     return accflags & java::lang::reflect::Modifier::ALL_FLAGS;
 352   }
 353
 354   jstring getName (void);
 355
 356   java::net::URL        *getResource (jstring resourceName);
 357   java::io::InputStream *getResourceAsStream (jstring resourceName);
 358   JArray<jobject> *getSigners (void);
 359   void setSigners(JArray<jobject> *);
 360
 361   inline jclass getSuperclass (void)
 362   {
 363     return superclass;
 364   }
 365
 366   inline jclass getInterface (jint n)
 367   {
 368     return interfaces[n];
 369   }
 370
 371   inline jboolean isArray (void)
 372     {
 373       return name->first() == '[';
 374     }
 375
 376   inline jclass getComponentType (void)
 377     {
 378       return isArray () ? element_type : 0;
 379     }
 380
 381   jboolean isAssignableFrom (jclass cls);
 382   jboolean isInstance (jobject obj);
 383
 384   inline jboolean isInterface (void)
 385   {
 386     return (accflags & java::lang::reflect::Modifier::INTERFACE) != 0;
 387   }
 388
 389   inline jboolean isPrimitive (void)
 390     {
 391       return vtable == JV_PRIMITIVE_VTABLE;
 392     }
 393
 394   jobject newInstance (void);
 395   java::security::ProtectionDomain *getProtectionDomain (void);
 396   java::lang::Package *getPackage (void);
 397   jstring toString (void);
 398   jboolean desiredAssertionStatus (void);
 399
 400   JArray<java::lang::reflect::TypeVariable *> *getTypeParameters (void);
 401
 402   java::lang::Class *getEnclosingClass (void);
 403   java::lang::reflect::Constructor *getEnclosingConstructor (void);
 404   java::lang::reflect::Method *getEnclosingMethod (void);
 405   jboolean isEnum (void);
 406
 407   // FIXME: this probably shouldn't be public.
 408   jint size (void)
 409   {
 410     return size_in_bytes;
 411   }
 412
 413   // The index of the first method we declare ourself (as opposed to
 414   // inheriting).
 415   inline jint firstMethodIndex (void)
 416   {
 417     return vtable_method_count - method_count;
 418   }
 419
 420   // finalization
 421   void finalize ();
 422
 423   // This constructor is used to create Class object for the primitive
 424   // types. See prims.cc.
 425   Class ();
 426
 427   static java::lang::Class class$;
 428
 429 private:
 430
 431   void memberAccessCheck (jint flags);
 432
 433   void initializeClass (void);
 434
 435   static jstring getPackagePortion (jstring);
 436
 437   void set_state (jint nstate)
 438   {
 439     state = nstate;
 440     notifyAll ();
 441   }
 442
 443   // Friend functions implemented in natClass.cc.
 444   friend _Jv_Method *::_Jv_GetMethodLocal (jclass klass, _Jv_Utf8Const *name,
 445                                            _Jv_Utf8Const *signature);
 446   friend jboolean (::_Jv_IsAssignableFrom) (jclass, jclass);
 447   friend jboolean (::_Jv_IsAssignableFromSlow) (jclass, jclass);
 448   friend jboolean (::_Jv_InterfaceAssignableFrom) (jclass, jclass);
 449   friend void *::_Jv_LookupInterfaceMethodIdx (jclass klass, jclass iface,
 450                                                int method_idx);
 451
 452   friend void ::_Jv_InitClass (jclass klass);
 453   friend java::lang::Class* ::_Jv_NewClassFromInitializer (const char *class_initializer);
 454   friend void _Jv_RegisterNewClasses (void **classes);
 455
 456   friend _Jv_Method* ::_Jv_LookupDeclaredMethod (jclass, _Jv_Utf8Const *,
 457                                                  _Jv_Utf8Const*, jclass *);
 458   friend jfieldID (::JvGetFirstInstanceField) (jclass);
 459   friend jint (::JvNumInstanceFields) (jclass);
 460   friend jfieldID (::JvGetFirstStaticField) (jclass);
 461   friend jint (::JvNumStaticFields) (jclass);
 462
 463   friend jobject (::_Jv_AllocObject) (jclass);
 464   friend void *::_Jv_AllocObj (jint, jclass);
 465   friend void *::_Jv_AllocPtrFreeObj (jint, jclass);
 466   friend void *::_Jv_AllocArray (jint, jclass);
 467
 468   friend jobject (::_Jv_JNI_ToReflectedField) (_Jv_JNIEnv *, jclass, jfieldID,
 469                                                jboolean);
 470   friend jobject (::_Jv_JNI_ToReflectedMethod) (_Jv_JNIEnv *, jclass, jmethodID,
 471                                                 jboolean);
 472   friend jfieldID (::_Jv_FromReflectedField) (java::lang::reflect::Field *);
 473
 474   friend jmethodID (::_Jv_FromReflectedMethod) (java::lang::reflect::Method *);
 475   friend jmethodID (::_Jv_FromReflectedConstructor) (java::lang::reflect::Constructor *);
 476   friend jint (::JvNumMethods) (jclass);
 477   friend jmethodID (::JvGetFirstMethod) (jclass);
 478   friend _Jv_Utf8Const *::_Jv_GetClassNameUtf8 (jclass);
 479 #ifdef INTERPRETER
 480   friend _Jv_MethodBase *(::_Jv_FindInterpreterMethod) (jclass klass,
 481                                                         jmethodID desired_method);
 482 #endif
 483
 484   // Friends classes and functions to implement the ClassLoader
 485   friend class java::lang::ClassLoader;
 486   friend class java::lang::VMClassLoader;
 487
 488   friend class java::io::ObjectOutputStream;
 489   friend class java::io::ObjectInputStream;
 490   friend class java::io::ObjectStreamClass;
 491
 492   friend void ::_Jv_RegisterClasses (const jclass *classes);
 493   friend void ::_Jv_RegisterClasses_Counted (const jclass *classes,
 494                                              size_t count);
 495   friend void ::_Jv_RegisterClassHookDefault (jclass klass);
 496   friend void ::_Jv_RegisterInitiatingLoader (jclass,java::lang::ClassLoader*);
 497   friend void ::_Jv_UnregisterInitiatingLoader (jclass,java::lang::ClassLoader*);
 498   friend void ::_Jv_UnregisterClass (jclass);
 499   friend jclass (::_Jv_FindClassNoException) (_Jv_Utf8Const *name,
 500                                    java::lang::ClassLoader *loader);
 501   friend jclass (::_Jv_FindClass) (_Jv_Utf8Const *name,
 502                                    java::lang::ClassLoader *loader);
 503   friend jclass (::_Jv_FindClassInCache) (_Jv_Utf8Const *name);
 504   friend jclass (::_Jv_PopClass) (void);
 505   friend void ::_Jv_PushClass (jclass k);
 506   friend void ::_Jv_NewArrayClass (jclass element,
 507                                    java::lang::ClassLoader *loader,
 508                                    _Jv_VTable *array_vtable);
 509   friend jclass (::_Jv_NewClass) (_Jv_Utf8Const *name, jclass superclass,
 510                                   java::lang::ClassLoader *loader);
 511   friend void ::_Jv_InitNewClassFields (jclass klass);
 512
 513   // in prims.cc
 514   friend void ::_Jv_InitPrimClass (jclass, const char *, char, int);
 515
 516   friend jstring (::_Jv_GetMethodString) (jclass, _Jv_Method *, jclass);
 517
 518   friend jboolean (::_Jv_CheckAccess) (jclass self_klass, jclass other_klass,
 519                                    jint flags);
 520
 521   friend bool (::_Jv_getInterfaceMethod) (jclass, jclass&, int&,
 522                                           const _Jv_Utf8Const*,
 523                                           const _Jv_Utf8Const*);
 524
 525   friend jclass (::_Jv_GetArrayClass) (jclass klass,
 526                                        java::lang::ClassLoader *loader);
 527
 528   friend jboolean (::_Jv_IsInterpretedClass) (jclass);
 529   friend jboolean (::_Jv_IsBinaryCompatibilityABI) (jclass);
 530
 531   friend jboolean (::_Jv_IsPhantomClass) (jclass);
 532
 533 #ifdef INTERPRETER
 534   friend void ::_Jv_InitField (jobject, jclass, int);
 535
 536   friend class ::_Jv_ClassReader;
 537   friend class ::_Jv_InterpClass;
 538   friend class ::_Jv_InterpMethod;
 539 #endif
 540   friend class ::_Jv_StackTrace;
 541
 542 #ifdef JV_MARKOBJ_DECL
 543   friend JV_MARKOBJ_DECL;
 544 #endif
 545
 546   friend class ::_Jv_BytecodeVerifier;
 547   friend class java::io::VMObjectStreamClass;
 548
 549   friend class ::_Jv_Linker;
 550   friend class ::_Jv_ExecutionEngine;
 551   friend class ::_Jv_CompiledEngine;
 552   friend class ::_Jv_IndirectCompiledEngine;
 553   friend class ::_Jv_InterpreterEngine;
 554
 555   friend void ::_Jv_sharedlib_register_hook (jclass klass);
 556
 557   friend void *::_Jv_ResolvePoolEntry (jclass this_class, jint index);
 558
 559   friend void ::_Jv_CopyClassesToSystemLoader (gnu::gcj::runtime::SystemClassLoader *);
 560
 561   // Chain for class pool.  This also doubles as the ABI version
 562   // number.  It is only used for this purpose at class registration
 563   // time, and only for precompiled classes.
 564   jclass next_or_version;
 565   // Name of class.
 566   _Jv_Utf8Const *name;
 567   // Access flags for class.
 568   _Jv_ushort accflags;
 569   // The superclass, or null for Object.
 570   jclass superclass;
 571   // Class constants.
 572   _Jv_Constants constants;
 573   // Methods.  If this is an array class, then this field holds a
 574   // pointer to the element type.
 575   union
 576   {
 577     _Jv_Method *methods;
 578     jclass element_type;
 579   };
 580   // Number of methods.  If this class is primitive, this holds the
 581   // character used to represent this type in a signature.
 582   jshort method_count;
 583   // Number of methods in the vtable.
 584   jshort vtable_method_count;
 585   // The fields.
 586   _Jv_Field *fields;
 587   // Size of instance fields, in bytes.
 588   jint size_in_bytes;
 589   // Total number of fields (instance and static).
 590   jshort field_count;
 591   // Number of static fields.
 592   jshort static_field_count;
 593   // The vtbl for all objects of this class.
 594   _Jv_VTable *vtable;
 595   // Virtual method offset table.
 596   _Jv_OffsetTable *otable;
 597   // Offset table symbols.
 598   _Jv_MethodSymbol *otable_syms;
 599   // Address table
 600   _Jv_AddressTable *atable;
 601   _Jv_MethodSymbol *atable_syms;
 602   // Interface table
 603   _Jv_AddressTable *itable;
 604   _Jv_MethodSymbol *itable_syms;
 605   _Jv_CatchClass *catch_classes;
 606   // Interfaces implemented by this class.
 607   jclass *interfaces;
 608   // The class loader for this class.
 609   java::lang::ClassLoader *loader;
 610   // Number of interfaces.
 611   jshort interface_count;
 612   // State of this class.
 613   jbyte state;
 614   // The thread which has locked this class.  Used during class
 615   // initialization.
 616   java::lang::Thread *thread;
 617   // How many levels of "extends" this class is removed from Object.
 618   jshort depth;
 619   // Vector of this class's superclasses, ordered by decreasing depth.
 620   jclass *ancestors;
 621   // In a regular class, this field points to the Class Interface Dispatch
 622   // Table. In an interface, it points to the ioffsets table.
 623   union
 624   {
 625     _Jv_IDispatchTable *idt;
 626     jshort *ioffsets;
 627   };
 628   // Pointer to the class that represents an array of this class.
 629   jclass arrayclass;
 630   // Security Domain to which this class belongs (or null).
 631   java::security::ProtectionDomain *protectionDomain;
 632   // Pointer to the type assertion table for this class.
 633   _Jv_TypeAssertion *assertion_table;
 634   // Signers of this class (or null).
 635   JArray<jobject> *hack_signers;
 636   // Used by Jv_PopClass and _Jv_PushClass to communicate with StackTrace.
 637   jclass chain;
 638   // Additional data, specific to the generator (JIT, native,
 639   // interpreter) of this class.
 640   void *aux_info;
 641   // Execution engine.
 642   _Jv_ExecutionEngine *engine;
 643 };
 644
 645 // Inline functions that are friends of java::lang::Class
 646
 647 inline void _Jv_InitClass (jclass klass)
 648 {
 649   if (__builtin_expect (klass->state == JV_STATE_DONE, true))
 650     return;
 651   klass->initializeClass ();
 652 }
 653
 654 // Return array class corresponding to element type KLASS, creating it if
 655 // necessary.
 656 inline jclass
 657 _Jv_GetArrayClass (jclass klass, java::lang::ClassLoader *loader)
 658 {
 659   extern void _Jv_NewArrayClass (jclass element,
 660                                  java::lang::ClassLoader *loader,
 661                                  _Jv_VTable *array_vtable = 0);
 662   if (__builtin_expect (!klass->arrayclass, false))
 663     _Jv_NewArrayClass (klass, loader);
 664   return klass->arrayclass;
 665 }
 666
 667 #endif /* __JAVA_LANG_CLASS_H__ */