1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/classfile/systemDictionary.hpp Sat Dec 01 00:00:00 2007 +0000
1.3 @@ -0,0 +1,581 @@
1.4 +/*
1.5 + * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.24 + * have any questions.
1.25 + *
1.26 + */
1.27 +
1.28 +// The system dictionary stores all loaded classes and maps:
1.29 +//
1.30 +// [class name,class loader] -> class i.e. [symbolOop,oop] -> klassOop
1.31 +//
1.32 +// Classes are loaded lazily. The default VM class loader is
1.33 +// represented as NULL.
1.34 +
1.35 +// The underlying data structure is an open hash table with a fixed number
1.36 +// of buckets. During loading the loader object is locked, (for the VM loader
1.37 +// a private lock object is used). Class loading can thus be done concurrently,
1.38 +// but only by different loaders.
1.39 +//
1.40 +// During loading a placeholder (name, loader) is temporarily placed in
1.41 +// a side data structure, and is used to detect ClassCircularityErrors
1.42 +// and to perform verification during GC. A GC can occur in the midst
1.43 +// of class loading, as we call out to Java, have to take locks, etc.
1.44 +//
1.45 +// When class loading is finished, a new entry is added to the system
1.46 +// dictionary and the place holder is removed. Note that the protection
1.47 +// domain field of the system dictionary has not yet been filled in when
1.48 +// the "real" system dictionary entry is created.
1.49 +//
1.50 +// Clients of this class who are interested in finding if a class has
1.51 +// been completely loaded -- not classes in the process of being loaded --
1.52 +// can read the SystemDictionary unlocked. This is safe because
1.53 +// - entries are only deleted at safepoints
1.54 +// - readers cannot come to a safepoint while actively examining
1.55 +// an entry (an entry cannot be deleted from under a reader)
1.56 +// - entries must be fully formed before they are available to concurrent
1.57 +// readers (we must ensure write ordering)
1.58 +//
1.59 +// Note that placeholders are deleted at any time, as they are removed
1.60 +// when a class is completely loaded. Therefore, readers as well as writers
1.61 +// of placeholders must hold the SystemDictionary_lock.
1.62 +//
1.63 +
1.64 +class Dictionary;
1.65 +class PlaceholderTable;
1.66 +class LoaderConstraintTable;
1.67 +class HashtableBucket;
1.68 +class ResolutionErrorTable;
1.69 +
1.70 +class SystemDictionary : AllStatic {
1.71 + friend class VMStructs;
1.72 + friend class CompactingPermGenGen;
1.73 + NOT_PRODUCT(friend class instanceKlassKlass;)
1.74 +
1.75 + public:
1.76 + // Returns a class with a given class name and class loader. Loads the
1.77 + // class if needed. If not found a NoClassDefFoundError or a
1.78 + // ClassNotFoundException is thrown, depending on the value on the
1.79 + // throw_error flag. For most uses the throw_error argument should be set
1.80 + // to true.
1.81 +
1.82 + static klassOop resolve_or_fail(symbolHandle class_name, Handle class_loader, Handle protection_domain, bool throw_error, TRAPS);
1.83 + // Convenient call for null loader and protection domain.
1.84 + static klassOop resolve_or_fail(symbolHandle class_name, bool throw_error, TRAPS);
1.85 +private:
1.86 + // handle error translation for resolve_or_null results
1.87 + static klassOop handle_resolution_exception(symbolHandle class_name, Handle class_loader, Handle protection_domain, bool throw_error, KlassHandle klass_h, TRAPS);
1.88 +
1.89 +public:
1.90 +
1.91 + // Returns a class with a given class name and class loader.
1.92 + // Loads the class if needed. If not found NULL is returned.
1.93 + static klassOop resolve_or_null(symbolHandle class_name, Handle class_loader, Handle protection_domain, TRAPS);
1.94 + // Version with null loader and protection domain
1.95 + static klassOop resolve_or_null(symbolHandle class_name, TRAPS);
1.96 +
1.97 + // Resolve a superclass or superinterface. Called from ClassFileParser,
1.98 + // parse_interfaces, resolve_instance_class_or_null, load_shared_class
1.99 + // "child_name" is the class whose super class or interface is being resolved.
1.100 + static klassOop resolve_super_or_fail(symbolHandle child_name,
1.101 + symbolHandle class_name,
1.102 + Handle class_loader,
1.103 + Handle protection_domain,
1.104 + bool is_superclass,
1.105 + TRAPS);
1.106 +
1.107 + // Parse new stream. This won't update the system dictionary or
1.108 + // class hierarchy, simply parse the stream. Used by JVMTI RedefineClasses.
1.109 + static klassOop parse_stream(symbolHandle class_name,
1.110 + Handle class_loader,
1.111 + Handle protection_domain,
1.112 + ClassFileStream* st,
1.113 + TRAPS);
1.114 +
1.115 + // Resolve from stream (called by jni_DefineClass and JVM_DefineClass)
1.116 + static klassOop resolve_from_stream(symbolHandle class_name, Handle class_loader, Handle protection_domain, ClassFileStream* st, TRAPS);
1.117 +
1.118 + // Lookup an already loaded class. If not found NULL is returned.
1.119 + static klassOop find(symbolHandle class_name, Handle class_loader, Handle protection_domain, TRAPS);
1.120 +
1.121 + // Lookup an already loaded instance or array class.
1.122 + // Do not make any queries to class loaders; consult only the cache.
1.123 + // If not found NULL is returned.
1.124 + static klassOop find_instance_or_array_klass(symbolHandle class_name,
1.125 + Handle class_loader,
1.126 + Handle protection_domain,
1.127 + TRAPS);
1.128 +
1.129 + // Lookup an instance or array class that has already been loaded
1.130 + // either into the given class loader, or else into another class
1.131 + // loader that is constrained (via loader constraints) to produce
1.132 + // a consistent class. Do not take protection domains into account.
1.133 + // Do not make any queries to class loaders; consult only the cache.
1.134 + // Return NULL if the class is not found.
1.135 + //
1.136 + // This function is a strict superset of find_instance_or_array_klass.
1.137 + // This function (the unchecked version) makes a conservative prediction
1.138 + // of the result of the checked version, assuming successful lookup.
1.139 + // If both functions return non-null, they must return the same value.
1.140 + // Also, the unchecked version may sometimes be non-null where the
1.141 + // checked version is null. This can occur in several ways:
1.142 + // 1. No query has yet been made to the class loader.
1.143 + // 2. The class loader was queried, but chose not to delegate.
1.144 + // 3. ClassLoader.checkPackageAccess rejected a proposed protection domain.
1.145 + // 4. Loading was attempted, but there was a linkage error of some sort.
1.146 + // In all of these cases, the loader constraints on this type are
1.147 + // satisfied, and it is safe for classes in the given class loader
1.148 + // to manipulate strongly-typed values of the found class, subject
1.149 + // to local linkage and access checks.
1.150 + static klassOop find_constrained_instance_or_array_klass(symbolHandle class_name,
1.151 + Handle class_loader,
1.152 + TRAPS);
1.153 +
1.154 + // Iterate over all klasses in dictionary
1.155 + // Just the classes from defining class loaders
1.156 + static void classes_do(void f(klassOop));
1.157 + // Added for initialize_itable_for_klass to handle exceptions
1.158 + static void classes_do(void f(klassOop, TRAPS), TRAPS);
1.159 + // All classes, and their class loaders
1.160 + static void classes_do(void f(klassOop, oop));
1.161 + // All classes, and their class loaders
1.162 + // (added for helpers that use HandleMarks and ResourceMarks)
1.163 + static void classes_do(void f(klassOop, oop, TRAPS), TRAPS);
1.164 + // All entries in the placeholder table and their class loaders
1.165 + static void placeholders_do(void f(symbolOop, oop));
1.166 +
1.167 + // Iterate over all methods in all klasses in dictionary
1.168 + static void methods_do(void f(methodOop));
1.169 +
1.170 + // Garbage collection support
1.171 +
1.172 + // This method applies "blk->do_oop" to all the pointers to "system"
1.173 + // classes and loaders.
1.174 + static void always_strong_oops_do(OopClosure* blk);
1.175 + static void always_strong_classes_do(OopClosure* blk);
1.176 + // This method applies "blk->do_oop" to all the placeholders.
1.177 + static void placeholders_do(OopClosure* blk);
1.178 +
1.179 + // Unload (that is, break root links to) all unmarked classes and
1.180 + // loaders. Returns "true" iff something was unloaded.
1.181 + static bool do_unloading(BoolObjectClosure* is_alive);
1.182 +
1.183 + // Applies "f->do_oop" to all root oops in the system dictionary.
1.184 + static void oops_do(OopClosure* f);
1.185 +
1.186 + // System loader lock
1.187 + static oop system_loader_lock() { return _system_loader_lock_obj; }
1.188 +
1.189 +private:
1.190 + // Traverses preloaded oops: various system classes. These are
1.191 + // guaranteed to be in the perm gen.
1.192 + static void preloaded_oops_do(OopClosure* f);
1.193 + static void lazily_loaded_oops_do(OopClosure* f);
1.194 +
1.195 +public:
1.196 + // Sharing support.
1.197 + static void reorder_dictionary();
1.198 + static void copy_buckets(char** top, char* end);
1.199 + static void copy_table(char** top, char* end);
1.200 + static void reverse();
1.201 + static void set_shared_dictionary(HashtableBucket* t, int length,
1.202 + int number_of_entries);
1.203 + // Printing
1.204 + static void print() PRODUCT_RETURN;
1.205 + static void print_class_statistics() PRODUCT_RETURN;
1.206 + static void print_method_statistics() PRODUCT_RETURN;
1.207 +
1.208 + // Number of contained klasses
1.209 + // This is both fully loaded classes and classes in the process
1.210 + // of being loaded
1.211 + static int number_of_classes();
1.212 +
1.213 + // Monotonically increasing counter which grows as classes are
1.214 + // loaded or modifications such as hot-swapping or setting/removing
1.215 + // of breakpoints are performed
1.216 + static inline int number_of_modifications() { assert_locked_or_safepoint(Compile_lock); return _number_of_modifications; }
1.217 + // Needed by evolution and breakpoint code
1.218 + static inline void notice_modification() { assert_locked_or_safepoint(Compile_lock); ++_number_of_modifications; }
1.219 +
1.220 + // Verification
1.221 + static void verify();
1.222 +
1.223 +#ifdef ASSERT
1.224 + static bool is_internal_format(symbolHandle class_name);
1.225 +#endif
1.226 +
1.227 + // Verify class is in dictionary
1.228 + static void verify_obj_klass_present(Handle obj,
1.229 + symbolHandle class_name,
1.230 + Handle class_loader);
1.231 +
1.232 + // Initialization
1.233 + static void initialize(TRAPS);
1.234 +
1.235 + // Fast access to commonly used classes (preloaded)
1.236 + static klassOop check_klass(klassOop k) {
1.237 + assert(k != NULL, "preloaded klass not initialized");
1.238 + return k;
1.239 + }
1.240 +
1.241 +public:
1.242 + static klassOop object_klass() { return check_klass(_object_klass); }
1.243 + static klassOop string_klass() { return check_klass(_string_klass); }
1.244 + static klassOop class_klass() { return check_klass(_class_klass); }
1.245 + static klassOop cloneable_klass() { return check_klass(_cloneable_klass); }
1.246 + static klassOop classloader_klass() { return check_klass(_classloader_klass); }
1.247 + static klassOop serializable_klass() { return check_klass(_serializable_klass); }
1.248 + static klassOop system_klass() { return check_klass(_system_klass); }
1.249 +
1.250 + static klassOop throwable_klass() { return check_klass(_throwable_klass); }
1.251 + static klassOop error_klass() { return check_klass(_error_klass); }
1.252 + static klassOop threaddeath_klass() { return check_klass(_threaddeath_klass); }
1.253 + static klassOop exception_klass() { return check_klass(_exception_klass); }
1.254 + static klassOop runtime_exception_klass() { return check_klass(_runtime_exception_klass); }
1.255 + static klassOop classNotFoundException_klass() { return check_klass(_classNotFoundException_klass); }
1.256 + static klassOop noClassDefFoundError_klass() { return check_klass(_noClassDefFoundError_klass); }
1.257 + static klassOop linkageError_klass() { return check_klass(_linkageError_klass); }
1.258 + static klassOop ClassCastException_klass() { return check_klass(_classCastException_klass); }
1.259 + static klassOop ArrayStoreException_klass() { return check_klass(_arrayStoreException_klass); }
1.260 + static klassOop virtualMachineError_klass() { return check_klass(_virtualMachineError_klass); }
1.261 + static klassOop OutOfMemoryError_klass() { return check_klass(_outOfMemoryError_klass); }
1.262 + static klassOop StackOverflowError_klass() { return check_klass(_StackOverflowError_klass); }
1.263 + static klassOop IllegalMonitorStateException_klass() { return check_klass(_illegalMonitorStateException_klass); }
1.264 + static klassOop protectionDomain_klass() { return check_klass(_protectionDomain_klass); }
1.265 + static klassOop AccessControlContext_klass() { return check_klass(_AccessControlContext_klass); }
1.266 + static klassOop reference_klass() { return check_klass(_reference_klass); }
1.267 + static klassOop soft_reference_klass() { return check_klass(_soft_reference_klass); }
1.268 + static klassOop weak_reference_klass() { return check_klass(_weak_reference_klass); }
1.269 + static klassOop final_reference_klass() { return check_klass(_final_reference_klass); }
1.270 + static klassOop phantom_reference_klass() { return check_klass(_phantom_reference_klass); }
1.271 + static klassOop finalizer_klass() { return check_klass(_finalizer_klass); }
1.272 +
1.273 + static klassOop thread_klass() { return check_klass(_thread_klass); }
1.274 + static klassOop threadGroup_klass() { return check_klass(_threadGroup_klass); }
1.275 + static klassOop properties_klass() { return check_klass(_properties_klass); }
1.276 + static klassOop reflect_accessible_object_klass() { return check_klass(_reflect_accessible_object_klass); }
1.277 + static klassOop reflect_field_klass() { return check_klass(_reflect_field_klass); }
1.278 + static klassOop reflect_method_klass() { return check_klass(_reflect_method_klass); }
1.279 + static klassOop reflect_constructor_klass() { return check_klass(_reflect_constructor_klass); }
1.280 + static klassOop reflect_method_accessor_klass() {
1.281 + assert(JDK_Version::is_gte_jdk14x_version() && UseNewReflection, "JDK 1.4 only");
1.282 + return check_klass(_reflect_method_accessor_klass);
1.283 + }
1.284 + static klassOop reflect_constructor_accessor_klass() {
1.285 + assert(JDK_Version::is_gte_jdk14x_version() && UseNewReflection, "JDK 1.4 only");
1.286 + return check_klass(_reflect_constructor_accessor_klass);
1.287 + }
1.288 + // NOTE: needed too early in bootstrapping process to have checks based on JDK version
1.289 + static klassOop reflect_magic_klass() { return _reflect_magic_klass; }
1.290 + static klassOop reflect_delegating_classloader_klass() { return _reflect_delegating_classloader_klass; }
1.291 + static klassOop reflect_constant_pool_klass() {
1.292 + assert(JDK_Version::is_gte_jdk15x_version(), "JDK 1.5 only");
1.293 + return _reflect_constant_pool_klass;
1.294 + }
1.295 + static klassOop reflect_unsafe_static_field_accessor_impl_klass() {
1.296 + assert(JDK_Version::is_gte_jdk15x_version(), "JDK 1.5 only");
1.297 + return _reflect_unsafe_static_field_accessor_impl_klass;
1.298 + }
1.299 +
1.300 + static klassOop vector_klass() { return check_klass(_vector_klass); }
1.301 + static klassOop hashtable_klass() { return check_klass(_hashtable_klass); }
1.302 + static klassOop stringBuffer_klass() { return check_klass(_stringBuffer_klass); }
1.303 + static klassOop stackTraceElement_klass() { return check_klass(_stackTraceElement_klass); }
1.304 +
1.305 + static klassOop java_nio_Buffer_klass() { return check_klass(_java_nio_Buffer_klass); }
1.306 +
1.307 + static klassOop sun_misc_AtomicLongCSImpl_klass() { return _sun_misc_AtomicLongCSImpl_klass; }
1.308 +
1.309 + // To support incremental JRE downloads (KERNEL JRE). Null if not present.
1.310 + static klassOop sun_jkernel_DownloadManager_klass() { return _sun_jkernel_DownloadManager_klass; }
1.311 +
1.312 + static klassOop boolean_klass() { return check_klass(_boolean_klass); }
1.313 + static klassOop char_klass() { return check_klass(_char_klass); }
1.314 + static klassOop float_klass() { return check_klass(_float_klass); }
1.315 + static klassOop double_klass() { return check_klass(_double_klass); }
1.316 + static klassOop byte_klass() { return check_klass(_byte_klass); }
1.317 + static klassOop short_klass() { return check_klass(_short_klass); }
1.318 + static klassOop int_klass() { return check_klass(_int_klass); }
1.319 + static klassOop long_klass() { return check_klass(_long_klass); }
1.320 +
1.321 + static klassOop box_klass(BasicType t) {
1.322 + assert((uint)t < T_VOID+1, "range check");
1.323 + return check_klass(_box_klasses[t]);
1.324 + }
1.325 + static BasicType box_klass_type(klassOop k); // inverse of box_klass
1.326 +
1.327 + // methods returning lazily loaded klasses
1.328 + // The corresponding method to load the class must be called before calling them.
1.329 + static klassOop abstract_ownable_synchronizer_klass() { return check_klass(_abstract_ownable_synchronizer_klass); }
1.330 +
1.331 + static void load_abstract_ownable_synchronizer_klass(TRAPS);
1.332 +
1.333 +private:
1.334 + // Tells whether ClassLoader.loadClassInternal is present
1.335 + static bool has_loadClassInternal() { return _has_loadClassInternal; }
1.336 +
1.337 +public:
1.338 + // Tells whether ClassLoader.checkPackageAccess is present
1.339 + static bool has_checkPackageAccess() { return _has_checkPackageAccess; }
1.340 +
1.341 + static bool class_klass_loaded() { return _class_klass != NULL; }
1.342 + static bool cloneable_klass_loaded() { return _cloneable_klass != NULL; }
1.343 +
1.344 + // Returns default system loader
1.345 + static oop java_system_loader();
1.346 +
1.347 + // Compute the default system loader
1.348 + static void compute_java_system_loader(TRAPS);
1.349 +
1.350 +private:
1.351 + // Mirrors for primitive classes (created eagerly)
1.352 + static oop check_mirror(oop m) {
1.353 + assert(m != NULL, "mirror not initialized");
1.354 + return m;
1.355 + }
1.356 +
1.357 +public:
1.358 + // Note: java_lang_Class::primitive_type is the inverse of java_mirror
1.359 +
1.360 + // Check class loader constraints
1.361 + static bool add_loader_constraint(symbolHandle name, Handle loader1,
1.362 + Handle loader2, TRAPS);
1.363 + static char* check_signature_loaders(symbolHandle signature, Handle loader1,
1.364 + Handle loader2, bool is_method, TRAPS);
1.365 +
1.366 + // Utility for printing loader "name" as part of tracing constraints
1.367 + static const char* loader_name(oop loader) {
1.368 + return ((loader) == NULL ? "<bootloader>" :
1.369 + instanceKlass::cast((loader)->klass())->name()->as_C_string() );
1.370 + }
1.371 +
1.372 + // Record the error when the first attempt to resolve a reference from a constant
1.373 + // pool entry to a class fails.
1.374 + static void add_resolution_error(constantPoolHandle pool, int which, symbolHandle error);
1.375 + static symbolOop find_resolution_error(constantPoolHandle pool, int which);
1.376 +
1.377 + private:
1.378 +
1.379 + enum Constants {
1.380 + _loader_constraint_size = 107, // number of entries in constraint table
1.381 + _resolution_error_size = 107, // number of entries in resolution error table
1.382 + _nof_buckets = 1009 // number of buckets in hash table
1.383 + };
1.384 +
1.385 +
1.386 + // Static variables
1.387 +
1.388 + // Hashtable holding loaded classes.
1.389 + static Dictionary* _dictionary;
1.390 +
1.391 + // Hashtable holding placeholders for classes being loaded.
1.392 + static PlaceholderTable* _placeholders;
1.393 +
1.394 + // Hashtable holding classes from the shared archive.
1.395 + static Dictionary* _shared_dictionary;
1.396 +
1.397 + // Monotonically increasing counter which grows with
1.398 + // _number_of_classes as well as hot-swapping and breakpoint setting
1.399 + // and removal.
1.400 + static int _number_of_modifications;
1.401 +
1.402 + // Lock object for system class loader
1.403 + static oop _system_loader_lock_obj;
1.404 +
1.405 + // Constraints on class loaders
1.406 + static LoaderConstraintTable* _loader_constraints;
1.407 +
1.408 + // Resolution errors
1.409 + static ResolutionErrorTable* _resolution_errors;
1.410 +
1.411 +public:
1.412 + // for VM_CounterDecay iteration support
1.413 + friend class CounterDecay;
1.414 + static klassOop try_get_next_class();
1.415 +
1.416 +private:
1.417 + static void validate_protection_domain(instanceKlassHandle klass,
1.418 + Handle class_loader,
1.419 + Handle protection_domain, TRAPS);
1.420 +
1.421 + friend class VM_PopulateDumpSharedSpace;
1.422 + friend class TraversePlaceholdersClosure;
1.423 + static Dictionary* dictionary() { return _dictionary; }
1.424 + static Dictionary* shared_dictionary() { return _shared_dictionary; }
1.425 + static PlaceholderTable* placeholders() { return _placeholders; }
1.426 + static LoaderConstraintTable* constraints() { return _loader_constraints; }
1.427 + static ResolutionErrorTable* resolution_errors() { return _resolution_errors; }
1.428 +
1.429 + // Basic loading operations
1.430 + static klassOop resolve_instance_class_or_null(symbolHandle class_name, Handle class_loader, Handle protection_domain, TRAPS);
1.431 + static klassOop resolve_array_class_or_null(symbolHandle class_name, Handle class_loader, Handle protection_domain, TRAPS);
1.432 + static instanceKlassHandle handle_parallel_super_load(symbolHandle class_name, symbolHandle supername, Handle class_loader, Handle protection_domain, Handle lockObject, TRAPS);
1.433 + // Wait on SystemDictionary_lock; unlocks lockObject before
1.434 + // waiting; relocks lockObject with correct recursion count
1.435 + // after waiting, but before reentering SystemDictionary_lock
1.436 + // to preserve lock order semantics.
1.437 + static void double_lock_wait(Handle lockObject, TRAPS);
1.438 + static void define_instance_class(instanceKlassHandle k, TRAPS);
1.439 + static instanceKlassHandle find_or_define_instance_class(symbolHandle class_name,
1.440 + Handle class_loader,
1.441 + instanceKlassHandle k, TRAPS);
1.442 + static instanceKlassHandle load_shared_class(symbolHandle class_name,
1.443 + Handle class_loader, TRAPS);
1.444 + static instanceKlassHandle load_shared_class(instanceKlassHandle ik,
1.445 + Handle class_loader, TRAPS);
1.446 + static instanceKlassHandle load_instance_class(symbolHandle class_name, Handle class_loader, TRAPS);
1.447 + static Handle compute_loader_lock_object(Handle class_loader, TRAPS);
1.448 + static void check_loader_lock_contention(Handle loader_lock, TRAPS);
1.449 +
1.450 + static klassOop find_shared_class(symbolHandle class_name);
1.451 +
1.452 + // Setup link to hierarchy
1.453 + static void add_to_hierarchy(instanceKlassHandle k, TRAPS);
1.454 +
1.455 +private:
1.456 + // We pass in the hashtable index so we can calculate it outside of
1.457 + // the SystemDictionary_lock.
1.458 +
1.459 + // Basic find on loaded classes
1.460 + static klassOop find_class(int index, unsigned int hash,
1.461 + symbolHandle name, Handle loader);
1.462 +
1.463 + // Basic find on classes in the midst of being loaded
1.464 + static symbolOop find_placeholder(int index, unsigned int hash,
1.465 + symbolHandle name, Handle loader);
1.466 +
1.467 + // Basic find operation of loaded classes and classes in the midst
1.468 + // of loading; used for assertions and verification only.
1.469 + static oop find_class_or_placeholder(symbolHandle class_name,
1.470 + Handle class_loader);
1.471 +
1.472 + // Updating entry in dictionary
1.473 + // Add a completely loaded class
1.474 + static void add_klass(int index, symbolHandle class_name,
1.475 + Handle class_loader, KlassHandle obj);
1.476 +
1.477 + // Add a placeholder for a class being loaded
1.478 + static void add_placeholder(int index,
1.479 + symbolHandle class_name,
1.480 + Handle class_loader);
1.481 + static void remove_placeholder(int index,
1.482 + symbolHandle class_name,
1.483 + Handle class_loader);
1.484 +
1.485 + // Performs cleanups after resolve_super_or_fail. This typically needs
1.486 + // to be called on failure.
1.487 + // Won't throw, but can block.
1.488 + static void resolution_cleanups(symbolHandle class_name,
1.489 + Handle class_loader,
1.490 + TRAPS);
1.491 +
1.492 + // Initialization
1.493 + static void initialize_preloaded_classes(TRAPS);
1.494 +
1.495 + // Class loader constraints
1.496 + static void check_constraints(int index, unsigned int hash,
1.497 + instanceKlassHandle k, Handle loader,
1.498 + bool defining, TRAPS);
1.499 + static void update_dictionary(int d_index, unsigned int d_hash,
1.500 + int p_index, unsigned int p_hash,
1.501 + instanceKlassHandle k, Handle loader, TRAPS);
1.502 +
1.503 + // Variables holding commonly used klasses (preloaded)
1.504 + static klassOop _object_klass;
1.505 + static klassOop _string_klass;
1.506 + static klassOop _class_klass;
1.507 + static klassOop _cloneable_klass;
1.508 + static klassOop _classloader_klass;
1.509 + static klassOop _serializable_klass;
1.510 + static klassOop _system_klass;
1.511 +
1.512 + static klassOop _throwable_klass;
1.513 + static klassOop _error_klass;
1.514 + static klassOop _threaddeath_klass;
1.515 + static klassOop _exception_klass;
1.516 + static klassOop _runtime_exception_klass;
1.517 + static klassOop _classNotFoundException_klass;
1.518 + static klassOop _noClassDefFoundError_klass;
1.519 + static klassOop _linkageError_klass;
1.520 + static klassOop _classCastException_klass;
1.521 + static klassOop _arrayStoreException_klass;
1.522 + static klassOop _virtualMachineError_klass;
1.523 + static klassOop _outOfMemoryError_klass;
1.524 + static klassOop _StackOverflowError_klass;
1.525 + static klassOop _illegalMonitorStateException_klass;
1.526 + static klassOop _protectionDomain_klass;
1.527 + static klassOop _AccessControlContext_klass;
1.528 + static klassOop _reference_klass;
1.529 + static klassOop _soft_reference_klass;
1.530 + static klassOop _weak_reference_klass;
1.531 + static klassOop _final_reference_klass;
1.532 + static klassOop _phantom_reference_klass;
1.533 + static klassOop _finalizer_klass;
1.534 +
1.535 + static klassOop _thread_klass;
1.536 + static klassOop _threadGroup_klass;
1.537 + static klassOop _properties_klass;
1.538 + static klassOop _reflect_accessible_object_klass;
1.539 + static klassOop _reflect_field_klass;
1.540 + static klassOop _reflect_method_klass;
1.541 + static klassOop _reflect_constructor_klass;
1.542 + // 1.4 reflection implementation
1.543 + static klassOop _reflect_magic_klass;
1.544 + static klassOop _reflect_method_accessor_klass;
1.545 + static klassOop _reflect_constructor_accessor_klass;
1.546 + static klassOop _reflect_delegating_classloader_klass;
1.547 + // 1.5 annotations implementation
1.548 + static klassOop _reflect_constant_pool_klass;
1.549 + static klassOop _reflect_unsafe_static_field_accessor_impl_klass;
1.550 +
1.551 + static klassOop _stringBuffer_klass;
1.552 + static klassOop _vector_klass;
1.553 + static klassOop _hashtable_klass;
1.554 +
1.555 + static klassOop _stackTraceElement_klass;
1.556 +
1.557 + static klassOop _java_nio_Buffer_klass;
1.558 +
1.559 + static klassOop _sun_misc_AtomicLongCSImpl_klass;
1.560 +
1.561 + // KERNEL JRE support.
1.562 + static klassOop _sun_jkernel_DownloadManager_klass;
1.563 +
1.564 + // Lazily loaded klasses
1.565 + static volatile klassOop _abstract_ownable_synchronizer_klass;
1.566 +
1.567 + // Box klasses
1.568 + static klassOop _boolean_klass;
1.569 + static klassOop _char_klass;
1.570 + static klassOop _float_klass;
1.571 + static klassOop _double_klass;
1.572 + static klassOop _byte_klass;
1.573 + static klassOop _short_klass;
1.574 + static klassOop _int_klass;
1.575 + static klassOop _long_klass;
1.576 +
1.577 + // table of same
1.578 + static klassOop _box_klasses[T_VOID+1];
1.579 +
1.580 + static oop _java_system_loader;
1.581 +
1.582 + static bool _has_loadClassInternal;
1.583 + static bool _has_checkPackageAccess;
1.584 +};
