Fri, 30 Aug 2013 09:50:49 +0100
Merge
duke@435 | 1 | /* |
zgu@4492 | 2 | * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
stefank@2314 | 25 | #ifndef SHARE_VM_CLASSFILE_SYSTEMDICTIONARY_HPP |
stefank@2314 | 26 | #define SHARE_VM_CLASSFILE_SYSTEMDICTIONARY_HPP |
stefank@2314 | 27 | |
stefank@2314 | 28 | #include "classfile/classFileStream.hpp" |
stefank@2314 | 29 | #include "classfile/classLoader.hpp" |
stefank@2314 | 30 | #include "oops/objArrayOop.hpp" |
coleenp@2497 | 31 | #include "oops/symbol.hpp" |
stefank@2314 | 32 | #include "runtime/java.hpp" |
stefank@2314 | 33 | #include "runtime/reflectionUtils.hpp" |
sla@5237 | 34 | #include "trace/traceTime.hpp" |
stefank@2314 | 35 | #include "utilities/hashtable.hpp" |
zgu@3900 | 36 | #include "utilities/hashtable.inline.hpp" |
stefank@2314 | 37 | |
sla@5237 | 38 | |
duke@435 | 39 | // The system dictionary stores all loaded classes and maps: |
duke@435 | 40 | // |
coleenp@4037 | 41 | // [class name,class loader] -> class i.e. [Symbol*,oop] -> Klass* |
duke@435 | 42 | // |
duke@435 | 43 | // Classes are loaded lazily. The default VM class loader is |
duke@435 | 44 | // represented as NULL. |
duke@435 | 45 | |
duke@435 | 46 | // The underlying data structure is an open hash table with a fixed number |
duke@435 | 47 | // of buckets. During loading the loader object is locked, (for the VM loader |
duke@435 | 48 | // a private lock object is used). Class loading can thus be done concurrently, |
duke@435 | 49 | // but only by different loaders. |
duke@435 | 50 | // |
duke@435 | 51 | // During loading a placeholder (name, loader) is temporarily placed in |
duke@435 | 52 | // a side data structure, and is used to detect ClassCircularityErrors |
duke@435 | 53 | // and to perform verification during GC. A GC can occur in the midst |
duke@435 | 54 | // of class loading, as we call out to Java, have to take locks, etc. |
duke@435 | 55 | // |
duke@435 | 56 | // When class loading is finished, a new entry is added to the system |
duke@435 | 57 | // dictionary and the place holder is removed. Note that the protection |
duke@435 | 58 | // domain field of the system dictionary has not yet been filled in when |
duke@435 | 59 | // the "real" system dictionary entry is created. |
duke@435 | 60 | // |
duke@435 | 61 | // Clients of this class who are interested in finding if a class has |
duke@435 | 62 | // been completely loaded -- not classes in the process of being loaded -- |
duke@435 | 63 | // can read the SystemDictionary unlocked. This is safe because |
duke@435 | 64 | // - entries are only deleted at safepoints |
duke@435 | 65 | // - readers cannot come to a safepoint while actively examining |
duke@435 | 66 | // an entry (an entry cannot be deleted from under a reader) |
duke@435 | 67 | // - entries must be fully formed before they are available to concurrent |
duke@435 | 68 | // readers (we must ensure write ordering) |
duke@435 | 69 | // |
duke@435 | 70 | // Note that placeholders are deleted at any time, as they are removed |
duke@435 | 71 | // when a class is completely loaded. Therefore, readers as well as writers |
duke@435 | 72 | // of placeholders must hold the SystemDictionary_lock. |
duke@435 | 73 | // |
duke@435 | 74 | |
duke@435 | 75 | class Dictionary; |
duke@435 | 76 | class PlaceholderTable; |
duke@435 | 77 | class LoaderConstraintTable; |
zgu@3900 | 78 | template <MEMFLAGS F> class HashtableBucket; |
duke@435 | 79 | class ResolutionErrorTable; |
jrose@1145 | 80 | class SymbolPropertyTable; |
duke@435 | 81 | |
jrose@567 | 82 | // Certain classes are preloaded, such as java.lang.Object and java.lang.String. |
jrose@567 | 83 | // They are all "well-known", in the sense that no class loader is allowed |
jrose@567 | 84 | // to provide a different definition. |
jrose@567 | 85 | // |
jrose@567 | 86 | // These klasses must all have names defined in vmSymbols. |
jrose@567 | 87 | |
jrose@567 | 88 | #define WK_KLASS_ENUM_NAME(kname) kname##_knum |
jrose@567 | 89 | |
jrose@567 | 90 | // Each well-known class has a short klass name (like object_klass), |
jrose@567 | 91 | // a vmSymbol name (like java_lang_Object), and a flag word |
jrose@567 | 92 | // that makes some minor distinctions, like whether the klass |
jrose@567 | 93 | // is preloaded, optional, release-specific, etc. |
jrose@567 | 94 | // The order of these definitions is significant; it is the order in which |
jrose@567 | 95 | // preloading is actually performed by initialize_preloaded_classes. |
jrose@567 | 96 | |
twisti@4158 | 97 | #define WK_KLASSES_DO(do_klass) \ |
twisti@4158 | 98 | /* well-known classes */ \ |
twisti@4163 | 99 | do_klass(Object_klass, java_lang_Object, Pre ) \ |
twisti@4163 | 100 | do_klass(String_klass, java_lang_String, Pre ) \ |
twisti@4163 | 101 | do_klass(Class_klass, java_lang_Class, Pre ) \ |
twisti@4163 | 102 | do_klass(Cloneable_klass, java_lang_Cloneable, Pre ) \ |
twisti@4163 | 103 | do_klass(ClassLoader_klass, java_lang_ClassLoader, Pre ) \ |
twisti@4163 | 104 | do_klass(Serializable_klass, java_io_Serializable, Pre ) \ |
twisti@4163 | 105 | do_klass(System_klass, java_lang_System, Pre ) \ |
twisti@4163 | 106 | do_klass(Throwable_klass, java_lang_Throwable, Pre ) \ |
twisti@4163 | 107 | do_klass(Error_klass, java_lang_Error, Pre ) \ |
twisti@4163 | 108 | do_klass(ThreadDeath_klass, java_lang_ThreadDeath, Pre ) \ |
twisti@4163 | 109 | do_klass(Exception_klass, java_lang_Exception, Pre ) \ |
twisti@4163 | 110 | do_klass(RuntimeException_klass, java_lang_RuntimeException, Pre ) \ |
twisti@4866 | 111 | do_klass(SecurityManager_klass, java_lang_SecurityManager, Pre ) \ |
twisti@4163 | 112 | do_klass(ProtectionDomain_klass, java_security_ProtectionDomain, Pre ) \ |
twisti@4163 | 113 | do_klass(AccessControlContext_klass, java_security_AccessControlContext, Pre ) \ |
twisti@4163 | 114 | do_klass(ClassNotFoundException_klass, java_lang_ClassNotFoundException, Pre ) \ |
twisti@4163 | 115 | do_klass(NoClassDefFoundError_klass, java_lang_NoClassDefFoundError, Pre ) \ |
twisti@4163 | 116 | do_klass(LinkageError_klass, java_lang_LinkageError, Pre ) \ |
twisti@4163 | 117 | do_klass(ClassCastException_klass, java_lang_ClassCastException, Pre ) \ |
twisti@4163 | 118 | do_klass(ArrayStoreException_klass, java_lang_ArrayStoreException, Pre ) \ |
twisti@4163 | 119 | do_klass(VirtualMachineError_klass, java_lang_VirtualMachineError, Pre ) \ |
twisti@4163 | 120 | do_klass(OutOfMemoryError_klass, java_lang_OutOfMemoryError, Pre ) \ |
twisti@4163 | 121 | do_klass(StackOverflowError_klass, java_lang_StackOverflowError, Pre ) \ |
twisti@4163 | 122 | do_klass(IllegalMonitorStateException_klass, java_lang_IllegalMonitorStateException, Pre ) \ |
twisti@4163 | 123 | do_klass(Reference_klass, java_lang_ref_Reference, Pre ) \ |
twisti@4158 | 124 | \ |
twisti@4158 | 125 | /* Preload ref klasses and set reference types */ \ |
twisti@4163 | 126 | do_klass(SoftReference_klass, java_lang_ref_SoftReference, Pre ) \ |
twisti@4163 | 127 | do_klass(WeakReference_klass, java_lang_ref_WeakReference, Pre ) \ |
twisti@4158 | 128 | do_klass(FinalReference_klass, java_lang_ref_FinalReference, Pre ) \ |
twisti@4163 | 129 | do_klass(PhantomReference_klass, java_lang_ref_PhantomReference, Pre ) \ |
twisti@4158 | 130 | do_klass(Finalizer_klass, java_lang_ref_Finalizer, Pre ) \ |
twisti@4158 | 131 | \ |
twisti@4163 | 132 | do_klass(Thread_klass, java_lang_Thread, Pre ) \ |
twisti@4163 | 133 | do_klass(ThreadGroup_klass, java_lang_ThreadGroup, Pre ) \ |
twisti@4163 | 134 | do_klass(Properties_klass, java_util_Properties, Pre ) \ |
twisti@4163 | 135 | do_klass(reflect_AccessibleObject_klass, java_lang_reflect_AccessibleObject, Pre ) \ |
twisti@4163 | 136 | do_klass(reflect_Field_klass, java_lang_reflect_Field, Pre ) \ |
coleenp@4398 | 137 | do_klass(reflect_Parameter_klass, java_lang_reflect_Parameter, Opt ) \ |
twisti@4163 | 138 | do_klass(reflect_Method_klass, java_lang_reflect_Method, Pre ) \ |
twisti@4163 | 139 | do_klass(reflect_Constructor_klass, java_lang_reflect_Constructor, Pre ) \ |
twisti@4158 | 140 | \ |
never@3137 | 141 | /* NOTE: needed too early in bootstrapping process to have checks based on JDK version */ \ |
never@3137 | 142 | /* Universe::is_gte_jdk14x_version() is not set up by this point. */ \ |
never@3137 | 143 | /* It's okay if this turns out to be NULL in non-1.4 JDKs. */ \ |
twisti@4866 | 144 | do_klass(lambda_MagicLambdaImpl_klass, java_lang_invoke_MagicLambdaImpl, Opt ) \ |
twisti@4158 | 145 | do_klass(reflect_MagicAccessorImpl_klass, sun_reflect_MagicAccessorImpl, Opt ) \ |
twisti@4158 | 146 | do_klass(reflect_MethodAccessorImpl_klass, sun_reflect_MethodAccessorImpl, Opt_Only_JDK14NewRef) \ |
twisti@4158 | 147 | do_klass(reflect_ConstructorAccessorImpl_klass, sun_reflect_ConstructorAccessorImpl, Opt_Only_JDK14NewRef) \ |
twisti@4158 | 148 | do_klass(reflect_DelegatingClassLoader_klass, sun_reflect_DelegatingClassLoader, Opt ) \ |
twisti@4158 | 149 | do_klass(reflect_ConstantPool_klass, sun_reflect_ConstantPool, Opt_Only_JDK15 ) \ |
twisti@4158 | 150 | do_klass(reflect_UnsafeStaticFieldAccessorImpl_klass, sun_reflect_UnsafeStaticFieldAccessorImpl, Opt_Only_JDK15 ) \ |
twisti@4866 | 151 | do_klass(reflect_CallerSensitive_klass, sun_reflect_CallerSensitive, Opt ) \ |
twisti@4158 | 152 | \ |
twisti@4158 | 153 | /* support for dynamic typing; it's OK if these are NULL in earlier JDKs */ \ |
sspitsyn@5496 | 154 | do_klass(DirectMethodHandle_klass, java_lang_invoke_DirectMethodHandle, Opt ) \ |
twisti@4163 | 155 | do_klass(MethodHandle_klass, java_lang_invoke_MethodHandle, Pre_JSR292 ) \ |
twisti@4163 | 156 | do_klass(MemberName_klass, java_lang_invoke_MemberName, Pre_JSR292 ) \ |
twisti@4163 | 157 | do_klass(MethodHandleNatives_klass, java_lang_invoke_MethodHandleNatives, Pre_JSR292 ) \ |
twisti@4158 | 158 | do_klass(LambdaForm_klass, java_lang_invoke_LambdaForm, Opt ) \ |
twisti@4163 | 159 | do_klass(MethodType_klass, java_lang_invoke_MethodType, Pre_JSR292 ) \ |
twisti@4163 | 160 | do_klass(BootstrapMethodError_klass, java_lang_BootstrapMethodError, Pre_JSR292 ) \ |
twisti@4163 | 161 | do_klass(CallSite_klass, java_lang_invoke_CallSite, Pre_JSR292 ) \ |
twisti@4163 | 162 | do_klass(ConstantCallSite_klass, java_lang_invoke_ConstantCallSite, Pre_JSR292 ) \ |
twisti@4163 | 163 | do_klass(MutableCallSite_klass, java_lang_invoke_MutableCallSite, Pre_JSR292 ) \ |
twisti@4163 | 164 | do_klass(VolatileCallSite_klass, java_lang_invoke_VolatileCallSite, Pre_JSR292 ) \ |
twisti@4158 | 165 | /* Note: MethodHandle must be first, and VolatileCallSite last in group */ \ |
twisti@4158 | 166 | \ |
twisti@4163 | 167 | do_klass(StringBuffer_klass, java_lang_StringBuffer, Pre ) \ |
twisti@4163 | 168 | do_klass(StringBuilder_klass, java_lang_StringBuilder, Pre ) \ |
twisti@4158 | 169 | \ |
twisti@4158 | 170 | /* It's NULL in non-1.4 JDKs. */ \ |
twisti@4158 | 171 | do_klass(StackTraceElement_klass, java_lang_StackTraceElement, Opt ) \ |
twisti@4158 | 172 | /* Universe::is_gte_jdk14x_version() is not set up by this point. */ \ |
twisti@4158 | 173 | /* It's okay if this turns out to be NULL in non-1.4 JDKs. */ \ |
twisti@4158 | 174 | do_klass(nio_Buffer_klass, java_nio_Buffer, Opt ) \ |
twisti@4158 | 175 | \ |
twisti@4158 | 176 | do_klass(PostVMInitHook_klass, sun_misc_PostVMInitHook, Opt ) \ |
twisti@4158 | 177 | \ |
twisti@4158 | 178 | /* Preload boxing klasses */ \ |
twisti@4163 | 179 | do_klass(Boolean_klass, java_lang_Boolean, Pre ) \ |
twisti@4163 | 180 | do_klass(Character_klass, java_lang_Character, Pre ) \ |
twisti@4163 | 181 | do_klass(Float_klass, java_lang_Float, Pre ) \ |
twisti@4163 | 182 | do_klass(Double_klass, java_lang_Double, Pre ) \ |
twisti@4163 | 183 | do_klass(Byte_klass, java_lang_Byte, Pre ) \ |
twisti@4163 | 184 | do_klass(Short_klass, java_lang_Short, Pre ) \ |
twisti@4163 | 185 | do_klass(Integer_klass, java_lang_Integer, Pre ) \ |
twisti@4163 | 186 | do_klass(Long_klass, java_lang_Long, Pre ) \ |
jrose@567 | 187 | /*end*/ |
jrose@567 | 188 | |
jrose@567 | 189 | |
duke@435 | 190 | class SystemDictionary : AllStatic { |
duke@435 | 191 | friend class VMStructs; |
jrose@1100 | 192 | friend class SystemDictionaryHandles; |
duke@435 | 193 | |
duke@435 | 194 | public: |
jrose@567 | 195 | enum WKID { |
jrose@567 | 196 | NO_WKID = 0, |
jrose@567 | 197 | |
never@3137 | 198 | #define WK_KLASS_ENUM(name, symbol, ignore_o) WK_KLASS_ENUM_NAME(name), WK_KLASS_ENUM_NAME(symbol) = WK_KLASS_ENUM_NAME(name), |
jrose@567 | 199 | WK_KLASSES_DO(WK_KLASS_ENUM) |
jrose@567 | 200 | #undef WK_KLASS_ENUM |
jrose@567 | 201 | |
jrose@567 | 202 | WKID_LIMIT, |
jrose@567 | 203 | |
jrose@567 | 204 | FIRST_WKID = NO_WKID + 1 |
jrose@567 | 205 | }; |
jrose@567 | 206 | |
jrose@567 | 207 | enum InitOption { |
jrose@567 | 208 | Pre, // preloaded; error if not present |
twisti@4163 | 209 | Pre_JSR292, // preloaded if EnableInvokeDynamic |
jrose@567 | 210 | |
jrose@567 | 211 | // Order is significant. Options before this point require resolve_or_fail. |
jrose@567 | 212 | // Options after this point will use resolve_or_null instead. |
jrose@567 | 213 | |
jrose@567 | 214 | Opt, // preload tried; NULL if not present |
jrose@567 | 215 | Opt_Only_JDK14NewRef, // preload tried; use only with NewReflection |
jrose@567 | 216 | Opt_Only_JDK15, // preload tried; use only with JDK1.5+ |
jrose@567 | 217 | OPTION_LIMIT, |
jrose@567 | 218 | CEIL_LG_OPTION_LIMIT = 4 // OPTION_LIMIT <= (1<<CEIL_LG_OPTION_LIMIT) |
jrose@567 | 219 | }; |
jrose@567 | 220 | |
jrose@567 | 221 | |
duke@435 | 222 | // Returns a class with a given class name and class loader. Loads the |
duke@435 | 223 | // class if needed. If not found a NoClassDefFoundError or a |
duke@435 | 224 | // ClassNotFoundException is thrown, depending on the value on the |
duke@435 | 225 | // throw_error flag. For most uses the throw_error argument should be set |
duke@435 | 226 | // to true. |
duke@435 | 227 | |
coleenp@4037 | 228 | static Klass* resolve_or_fail(Symbol* class_name, Handle class_loader, Handle protection_domain, bool throw_error, TRAPS); |
duke@435 | 229 | // Convenient call for null loader and protection domain. |
coleenp@4037 | 230 | static Klass* resolve_or_fail(Symbol* class_name, bool throw_error, TRAPS); |
duke@435 | 231 | private: |
duke@435 | 232 | // handle error translation for resolve_or_null results |
coleenp@4037 | 233 | static Klass* handle_resolution_exception(Symbol* class_name, Handle class_loader, Handle protection_domain, bool throw_error, KlassHandle klass_h, TRAPS); |
duke@435 | 234 | |
duke@435 | 235 | public: |
duke@435 | 236 | |
duke@435 | 237 | // Returns a class with a given class name and class loader. |
duke@435 | 238 | // Loads the class if needed. If not found NULL is returned. |
coleenp@4037 | 239 | static Klass* resolve_or_null(Symbol* class_name, Handle class_loader, Handle protection_domain, TRAPS); |
duke@435 | 240 | // Version with null loader and protection domain |
coleenp@4037 | 241 | static Klass* resolve_or_null(Symbol* class_name, TRAPS); |
duke@435 | 242 | |
duke@435 | 243 | // Resolve a superclass or superinterface. Called from ClassFileParser, |
duke@435 | 244 | // parse_interfaces, resolve_instance_class_or_null, load_shared_class |
duke@435 | 245 | // "child_name" is the class whose super class or interface is being resolved. |
coleenp@4037 | 246 | static Klass* resolve_super_or_fail(Symbol* child_name, |
coleenp@2497 | 247 | Symbol* class_name, |
duke@435 | 248 | Handle class_loader, |
duke@435 | 249 | Handle protection_domain, |
duke@435 | 250 | bool is_superclass, |
duke@435 | 251 | TRAPS); |
duke@435 | 252 | |
duke@435 | 253 | // Parse new stream. This won't update the system dictionary or |
duke@435 | 254 | // class hierarchy, simply parse the stream. Used by JVMTI RedefineClasses. |
coleenp@4037 | 255 | static Klass* parse_stream(Symbol* class_name, |
duke@435 | 256 | Handle class_loader, |
duke@435 | 257 | Handle protection_domain, |
duke@435 | 258 | ClassFileStream* st, |
jrose@866 | 259 | TRAPS) { |
jrose@866 | 260 | KlassHandle nullHandle; |
jrose@866 | 261 | return parse_stream(class_name, class_loader, protection_domain, st, nullHandle, NULL, THREAD); |
jrose@866 | 262 | } |
coleenp@4037 | 263 | static Klass* parse_stream(Symbol* class_name, |
jrose@866 | 264 | Handle class_loader, |
jrose@866 | 265 | Handle protection_domain, |
jrose@866 | 266 | ClassFileStream* st, |
jrose@866 | 267 | KlassHandle host_klass, |
jrose@866 | 268 | GrowableArray<Handle>* cp_patches, |
duke@435 | 269 | TRAPS); |
duke@435 | 270 | |
duke@435 | 271 | // Resolve from stream (called by jni_DefineClass and JVM_DefineClass) |
coleenp@4037 | 272 | static Klass* resolve_from_stream(Symbol* class_name, Handle class_loader, |
acorn@1408 | 273 | Handle protection_domain, |
acorn@1408 | 274 | ClassFileStream* st, bool verify, TRAPS); |
duke@435 | 275 | |
duke@435 | 276 | // Lookup an already loaded class. If not found NULL is returned. |
coleenp@4037 | 277 | static Klass* find(Symbol* class_name, Handle class_loader, Handle protection_domain, TRAPS); |
duke@435 | 278 | |
duke@435 | 279 | // Lookup an already loaded instance or array class. |
duke@435 | 280 | // Do not make any queries to class loaders; consult only the cache. |
duke@435 | 281 | // If not found NULL is returned. |
coleenp@4037 | 282 | static Klass* find_instance_or_array_klass(Symbol* class_name, |
duke@435 | 283 | Handle class_loader, |
duke@435 | 284 | Handle protection_domain, |
duke@435 | 285 | TRAPS); |
duke@435 | 286 | |
duke@435 | 287 | // Lookup an instance or array class that has already been loaded |
duke@435 | 288 | // either into the given class loader, or else into another class |
duke@435 | 289 | // loader that is constrained (via loader constraints) to produce |
duke@435 | 290 | // a consistent class. Do not take protection domains into account. |
duke@435 | 291 | // Do not make any queries to class loaders; consult only the cache. |
duke@435 | 292 | // Return NULL if the class is not found. |
duke@435 | 293 | // |
duke@435 | 294 | // This function is a strict superset of find_instance_or_array_klass. |
duke@435 | 295 | // This function (the unchecked version) makes a conservative prediction |
duke@435 | 296 | // of the result of the checked version, assuming successful lookup. |
duke@435 | 297 | // If both functions return non-null, they must return the same value. |
duke@435 | 298 | // Also, the unchecked version may sometimes be non-null where the |
duke@435 | 299 | // checked version is null. This can occur in several ways: |
duke@435 | 300 | // 1. No query has yet been made to the class loader. |
duke@435 | 301 | // 2. The class loader was queried, but chose not to delegate. |
duke@435 | 302 | // 3. ClassLoader.checkPackageAccess rejected a proposed protection domain. |
duke@435 | 303 | // 4. Loading was attempted, but there was a linkage error of some sort. |
duke@435 | 304 | // In all of these cases, the loader constraints on this type are |
duke@435 | 305 | // satisfied, and it is safe for classes in the given class loader |
duke@435 | 306 | // to manipulate strongly-typed values of the found class, subject |
duke@435 | 307 | // to local linkage and access checks. |
coleenp@4037 | 308 | static Klass* find_constrained_instance_or_array_klass(Symbol* class_name, |
duke@435 | 309 | Handle class_loader, |
duke@435 | 310 | TRAPS); |
duke@435 | 311 | |
duke@435 | 312 | // Iterate over all klasses in dictionary |
duke@435 | 313 | // Just the classes from defining class loaders |
coleenp@4037 | 314 | static void classes_do(void f(Klass*)); |
duke@435 | 315 | // Added for initialize_itable_for_klass to handle exceptions |
coleenp@4037 | 316 | static void classes_do(void f(Klass*, TRAPS), TRAPS); |
duke@435 | 317 | // All classes, and their class loaders |
coleenp@4037 | 318 | static void classes_do(void f(Klass*, ClassLoaderData*)); |
coleenp@5100 | 319 | |
coleenp@4037 | 320 | static void placeholders_do(void f(Symbol*)); |
duke@435 | 321 | |
duke@435 | 322 | // Iterate over all methods in all klasses in dictionary |
coleenp@4037 | 323 | static void methods_do(void f(Method*)); |
duke@435 | 324 | |
duke@435 | 325 | // Garbage collection support |
duke@435 | 326 | |
duke@435 | 327 | // This method applies "blk->do_oop" to all the pointers to "system" |
duke@435 | 328 | // classes and loaders. |
duke@435 | 329 | static void always_strong_oops_do(OopClosure* blk); |
coleenp@4037 | 330 | static void always_strong_classes_do(KlassClosure* closure); |
duke@435 | 331 | |
duke@435 | 332 | // Unload (that is, break root links to) all unmarked classes and |
duke@435 | 333 | // loaders. Returns "true" iff something was unloaded. |
duke@435 | 334 | static bool do_unloading(BoolObjectClosure* is_alive); |
duke@435 | 335 | |
acorn@3491 | 336 | static int calculate_systemdictionary_size(int loadedclasses); |
acorn@3491 | 337 | |
duke@435 | 338 | // Applies "f->do_oop" to all root oops in the system dictionary. |
duke@435 | 339 | static void oops_do(OopClosure* f); |
duke@435 | 340 | |
duke@435 | 341 | // System loader lock |
duke@435 | 342 | static oop system_loader_lock() { return _system_loader_lock_obj; } |
duke@435 | 343 | |
duke@435 | 344 | private: |
coleenp@4037 | 345 | // Extended Redefine classes support (tbi) |
coleenp@4037 | 346 | static void preloaded_classes_do(KlassClosure* f); |
coleenp@4037 | 347 | static void lazily_loaded_classes_do(KlassClosure* f); |
duke@435 | 348 | public: |
duke@435 | 349 | // Sharing support. |
duke@435 | 350 | static void reorder_dictionary(); |
duke@435 | 351 | static void copy_buckets(char** top, char* end); |
duke@435 | 352 | static void copy_table(char** top, char* end); |
duke@435 | 353 | static void reverse(); |
zgu@3900 | 354 | static void set_shared_dictionary(HashtableBucket<mtClass>* t, int length, |
duke@435 | 355 | int number_of_entries); |
duke@435 | 356 | // Printing |
duke@435 | 357 | static void print() PRODUCT_RETURN; |
duke@435 | 358 | static void print_class_statistics() PRODUCT_RETURN; |
duke@435 | 359 | static void print_method_statistics() PRODUCT_RETURN; |
duke@435 | 360 | |
duke@435 | 361 | // Number of contained klasses |
duke@435 | 362 | // This is both fully loaded classes and classes in the process |
duke@435 | 363 | // of being loaded |
duke@435 | 364 | static int number_of_classes(); |
duke@435 | 365 | |
duke@435 | 366 | // Monotonically increasing counter which grows as classes are |
duke@435 | 367 | // loaded or modifications such as hot-swapping or setting/removing |
duke@435 | 368 | // of breakpoints are performed |
duke@435 | 369 | static inline int number_of_modifications() { assert_locked_or_safepoint(Compile_lock); return _number_of_modifications; } |
duke@435 | 370 | // Needed by evolution and breakpoint code |
duke@435 | 371 | static inline void notice_modification() { assert_locked_or_safepoint(Compile_lock); ++_number_of_modifications; } |
duke@435 | 372 | |
duke@435 | 373 | // Verification |
duke@435 | 374 | static void verify(); |
duke@435 | 375 | |
duke@435 | 376 | #ifdef ASSERT |
coleenp@2497 | 377 | static bool is_internal_format(Symbol* class_name); |
duke@435 | 378 | #endif |
duke@435 | 379 | |
duke@435 | 380 | // Verify class is in dictionary |
coleenp@4037 | 381 | static void verify_obj_klass_present(Symbol* class_name, |
coleenp@4037 | 382 | ClassLoaderData* loader_data); |
duke@435 | 383 | |
duke@435 | 384 | // Initialization |
duke@435 | 385 | static void initialize(TRAPS); |
duke@435 | 386 | |
duke@435 | 387 | // Fast access to commonly used classes (preloaded) |
coleenp@4037 | 388 | static Klass* check_klass(Klass* k) { |
duke@435 | 389 | assert(k != NULL, "preloaded klass not initialized"); |
duke@435 | 390 | return k; |
duke@435 | 391 | } |
duke@435 | 392 | |
twisti@4158 | 393 | static Klass* check_klass_Pre( Klass* k) { return check_klass(k); } |
twisti@4163 | 394 | static Klass* check_klass_Pre_JSR292(Klass* k) { return EnableInvokeDynamic ? check_klass(k) : k; } |
twisti@4158 | 395 | static Klass* check_klass_Opt( Klass* k) { return k; } |
coleenp@4037 | 396 | static Klass* check_klass_Opt_Only_JDK15(Klass* k) { |
jrose@567 | 397 | assert(JDK_Version::is_gte_jdk15x_version(), "JDK 1.5 only"); |
jrose@567 | 398 | return k; |
jrose@567 | 399 | } |
coleenp@4037 | 400 | static Klass* check_klass_Opt_Only_JDK14NewRef(Klass* k) { |
duke@435 | 401 | assert(JDK_Version::is_gte_jdk14x_version() && UseNewReflection, "JDK 1.4 only"); |
jrose@567 | 402 | // despite the optional loading, if you use this it must be present: |
jrose@567 | 403 | return check_klass(k); |
duke@435 | 404 | } |
duke@435 | 405 | |
jrose@567 | 406 | static bool initialize_wk_klass(WKID id, int init_opt, TRAPS); |
jrose@567 | 407 | static void initialize_wk_klasses_until(WKID limit_id, WKID &start_id, TRAPS); |
jrose@567 | 408 | static void initialize_wk_klasses_through(WKID end_id, WKID &start_id, TRAPS) { |
jrose@567 | 409 | int limit = (int)end_id + 1; |
jrose@567 | 410 | initialize_wk_klasses_until((WKID) limit, start_id, THREAD); |
jrose@567 | 411 | } |
duke@435 | 412 | |
jrose@567 | 413 | public: |
never@3137 | 414 | #define WK_KLASS_DECLARE(name, symbol, option) \ |
coleenp@4037 | 415 | static Klass* name() { return check_klass_##option(_well_known_klasses[WK_KLASS_ENUM_NAME(name)]); } \ |
coleenp@4037 | 416 | static Klass** name##_addr() { \ |
coleenp@4037 | 417 | return &SystemDictionary::_well_known_klasses[SystemDictionary::WK_KLASS_ENUM_NAME(name)]; \ |
coleenp@4037 | 418 | } |
jrose@567 | 419 | WK_KLASSES_DO(WK_KLASS_DECLARE); |
jrose@567 | 420 | #undef WK_KLASS_DECLARE |
duke@435 | 421 | |
coleenp@4037 | 422 | static Klass* well_known_klass(WKID id) { |
never@3137 | 423 | assert(id >= (int)FIRST_WKID && id < (int)WKID_LIMIT, "oob"); |
never@3137 | 424 | return _well_known_klasses[id]; |
never@3137 | 425 | } |
never@3137 | 426 | |
coleenp@4037 | 427 | static Klass** well_known_klass_addr(WKID id) { |
coleenp@4037 | 428 | assert(id >= (int)FIRST_WKID && id < (int)WKID_LIMIT, "oob"); |
coleenp@4037 | 429 | return &_well_known_klasses[id]; |
coleenp@4037 | 430 | } |
coleenp@4037 | 431 | |
jrose@567 | 432 | // Local definition for direct access to the private array: |
jrose@582 | 433 | #define WK_KLASS(name) _well_known_klasses[SystemDictionary::WK_KLASS_ENUM_NAME(name)] |
duke@435 | 434 | |
coleenp@4037 | 435 | static Klass* box_klass(BasicType t) { |
duke@435 | 436 | assert((uint)t < T_VOID+1, "range check"); |
duke@435 | 437 | return check_klass(_box_klasses[t]); |
duke@435 | 438 | } |
coleenp@4037 | 439 | static BasicType box_klass_type(Klass* k); // inverse of box_klass |
duke@435 | 440 | |
duke@435 | 441 | // methods returning lazily loaded klasses |
duke@435 | 442 | // The corresponding method to load the class must be called before calling them. |
coleenp@4037 | 443 | static Klass* abstract_ownable_synchronizer_klass() { return check_klass(_abstract_ownable_synchronizer_klass); } |
duke@435 | 444 | |
duke@435 | 445 | static void load_abstract_ownable_synchronizer_klass(TRAPS); |
duke@435 | 446 | |
duke@435 | 447 | private: |
duke@435 | 448 | // Tells whether ClassLoader.loadClassInternal is present |
duke@435 | 449 | static bool has_loadClassInternal() { return _has_loadClassInternal; } |
duke@435 | 450 | |
coleenp@4037 | 451 | // Returns the class loader data to be used when looking up/updating the |
coleenp@4037 | 452 | // system dictionary. |
coleenp@4037 | 453 | static ClassLoaderData *class_loader_data(Handle class_loader) { |
coleenp@4037 | 454 | return ClassLoaderData::class_loader_data(class_loader()); |
coleenp@4037 | 455 | } |
coleenp@4037 | 456 | |
duke@435 | 457 | public: |
duke@435 | 458 | // Tells whether ClassLoader.checkPackageAccess is present |
duke@435 | 459 | static bool has_checkPackageAccess() { return _has_checkPackageAccess; } |
duke@435 | 460 | |
coleenp@4398 | 461 | static bool Parameter_klass_loaded() { return WK_KLASS(reflect_Parameter_klass) != NULL; } |
never@1577 | 462 | static bool Class_klass_loaded() { return WK_KLASS(Class_klass) != NULL; } |
never@1577 | 463 | static bool Cloneable_klass_loaded() { return WK_KLASS(Cloneable_klass) != NULL; } |
coleenp@4037 | 464 | static bool Object_klass_loaded() { return WK_KLASS(Object_klass) != NULL; } |
coleenp@4037 | 465 | static bool ClassLoader_klass_loaded() { return WK_KLASS(ClassLoader_klass) != NULL; } |
duke@435 | 466 | |
duke@435 | 467 | // Returns default system loader |
duke@435 | 468 | static oop java_system_loader(); |
duke@435 | 469 | |
duke@435 | 470 | // Compute the default system loader |
duke@435 | 471 | static void compute_java_system_loader(TRAPS); |
duke@435 | 472 | |
coleenp@4037 | 473 | // Register a new class loader |
coleenp@4304 | 474 | static ClassLoaderData* register_loader(Handle class_loader, TRAPS); |
duke@435 | 475 | private: |
duke@435 | 476 | // Mirrors for primitive classes (created eagerly) |
duke@435 | 477 | static oop check_mirror(oop m) { |
duke@435 | 478 | assert(m != NULL, "mirror not initialized"); |
duke@435 | 479 | return m; |
duke@435 | 480 | } |
duke@435 | 481 | |
duke@435 | 482 | public: |
duke@435 | 483 | // Note: java_lang_Class::primitive_type is the inverse of java_mirror |
duke@435 | 484 | |
duke@435 | 485 | // Check class loader constraints |
coleenp@2497 | 486 | static bool add_loader_constraint(Symbol* name, Handle loader1, |
duke@435 | 487 | Handle loader2, TRAPS); |
acorn@4840 | 488 | static Symbol* check_signature_loaders(Symbol* signature, Handle loader1, |
acorn@4840 | 489 | Handle loader2, bool is_method, TRAPS); |
duke@435 | 490 | |
jrose@1145 | 491 | // JSR 292 |
twisti@3969 | 492 | // find a java.lang.invoke.MethodHandle.invoke* method for a given signature |
twisti@3969 | 493 | // (asks Java to compute it if necessary, except in a compiler thread) |
twisti@3969 | 494 | static methodHandle find_method_handle_invoker(Symbol* name, |
twisti@3969 | 495 | Symbol* signature, |
twisti@3969 | 496 | KlassHandle accessing_klass, |
twisti@3969 | 497 | Handle *appendix_result, |
twisti@4133 | 498 | Handle *method_type_result, |
twisti@3969 | 499 | TRAPS); |
twisti@3969 | 500 | // for a given signature, find the internal MethodHandle method (linkTo* or invokeBasic) |
twisti@3969 | 501 | // (does not ask Java, since this is a low-level intrinsic defined by the JVM) |
twisti@3969 | 502 | static methodHandle find_method_handle_intrinsic(vmIntrinsics::ID iid, |
twisti@3969 | 503 | Symbol* signature, |
twisti@3969 | 504 | TRAPS); |
twisti@3969 | 505 | // find a java.lang.invoke.MethodType object for a given signature |
twisti@3969 | 506 | // (asks Java to compute it if necessary, except in a compiler thread) |
coleenp@2497 | 507 | static Handle find_method_handle_type(Symbol* signature, |
jrose@1863 | 508 | KlassHandle accessing_klass, |
jrose@1862 | 509 | TRAPS); |
twisti@3969 | 510 | |
jrose@2639 | 511 | // ask Java to compute a java.lang.invoke.MethodHandle object for a given CP entry |
jrose@1957 | 512 | static Handle link_method_handle_constant(KlassHandle caller, |
jrose@1957 | 513 | int ref_kind, //e.g., JVM_REF_invokeVirtual |
jrose@1957 | 514 | KlassHandle callee, |
coleenp@2497 | 515 | Symbol* name, |
coleenp@2497 | 516 | Symbol* signature, |
jrose@1957 | 517 | TRAPS); |
twisti@3969 | 518 | |
jrose@1161 | 519 | // ask Java to create a dynamic call site, while linking an invokedynamic op |
twisti@3969 | 520 | static methodHandle find_dynamic_call_site_invoker(KlassHandle caller, |
twisti@3969 | 521 | Handle bootstrap_method, |
twisti@3969 | 522 | Symbol* name, |
twisti@3969 | 523 | Symbol* type, |
twisti@3969 | 524 | Handle *appendix_result, |
twisti@4133 | 525 | Handle *method_type_result, |
twisti@3969 | 526 | TRAPS); |
jrose@1161 | 527 | |
duke@435 | 528 | // Utility for printing loader "name" as part of tracing constraints |
duke@435 | 529 | static const char* loader_name(oop loader) { |
duke@435 | 530 | return ((loader) == NULL ? "<bootloader>" : |
coleenp@4037 | 531 | InstanceKlass::cast((loader)->klass())->name()->as_C_string() ); |
coleenp@4037 | 532 | } |
coleenp@4037 | 533 | static const char* loader_name(ClassLoaderData* loader_data) { |
coleenp@4304 | 534 | return (loader_data->class_loader() == NULL ? "<bootloader>" : |
coleenp@4037 | 535 | InstanceKlass::cast((loader_data->class_loader())->klass())->name()->as_C_string() ); |
duke@435 | 536 | } |
duke@435 | 537 | |
duke@435 | 538 | // Record the error when the first attempt to resolve a reference from a constant |
duke@435 | 539 | // pool entry to a class fails. |
coleenp@2497 | 540 | static void add_resolution_error(constantPoolHandle pool, int which, Symbol* error); |
coleenp@4037 | 541 | static void delete_resolution_error(ConstantPool* pool); |
coleenp@2497 | 542 | static Symbol* find_resolution_error(constantPoolHandle pool, int which); |
duke@435 | 543 | |
duke@435 | 544 | private: |
duke@435 | 545 | |
duke@435 | 546 | enum Constants { |
duke@435 | 547 | _loader_constraint_size = 107, // number of entries in constraint table |
duke@435 | 548 | _resolution_error_size = 107, // number of entries in resolution error table |
jrose@1145 | 549 | _invoke_method_size = 139, // number of entries in invoke method table |
acorn@3491 | 550 | _nof_buckets = 1009, // number of buckets in hash table for placeholders |
acorn@3491 | 551 | _old_default_sdsize = 1009, // backward compat for system dictionary size |
acorn@3491 | 552 | _prime_array_size = 8, // array of primes for system dictionary size |
acorn@3491 | 553 | _average_depth_goal = 3 // goal for lookup length |
duke@435 | 554 | }; |
duke@435 | 555 | |
duke@435 | 556 | |
duke@435 | 557 | // Static variables |
duke@435 | 558 | |
acorn@3491 | 559 | // hashtable sizes for system dictionary to allow growth |
acorn@3491 | 560 | // prime numbers for system dictionary size |
acorn@3491 | 561 | static int _sdgeneration; |
acorn@3491 | 562 | static const int _primelist[_prime_array_size]; |
acorn@3491 | 563 | |
duke@435 | 564 | // Hashtable holding loaded classes. |
duke@435 | 565 | static Dictionary* _dictionary; |
duke@435 | 566 | |
duke@435 | 567 | // Hashtable holding placeholders for classes being loaded. |
duke@435 | 568 | static PlaceholderTable* _placeholders; |
duke@435 | 569 | |
duke@435 | 570 | // Hashtable holding classes from the shared archive. |
duke@435 | 571 | static Dictionary* _shared_dictionary; |
duke@435 | 572 | |
duke@435 | 573 | // Monotonically increasing counter which grows with |
duke@435 | 574 | // _number_of_classes as well as hot-swapping and breakpoint setting |
duke@435 | 575 | // and removal. |
duke@435 | 576 | static int _number_of_modifications; |
duke@435 | 577 | |
duke@435 | 578 | // Lock object for system class loader |
duke@435 | 579 | static oop _system_loader_lock_obj; |
duke@435 | 580 | |
duke@435 | 581 | // Constraints on class loaders |
duke@435 | 582 | static LoaderConstraintTable* _loader_constraints; |
duke@435 | 583 | |
duke@435 | 584 | // Resolution errors |
duke@435 | 585 | static ResolutionErrorTable* _resolution_errors; |
duke@435 | 586 | |
jrose@1145 | 587 | // Invoke methods (JSR 292) |
jrose@1145 | 588 | static SymbolPropertyTable* _invoke_method_table; |
jrose@1145 | 589 | |
duke@435 | 590 | public: |
duke@435 | 591 | // for VM_CounterDecay iteration support |
duke@435 | 592 | friend class CounterDecay; |
coleenp@4037 | 593 | static Klass* try_get_next_class(); |
duke@435 | 594 | |
duke@435 | 595 | private: |
duke@435 | 596 | static void validate_protection_domain(instanceKlassHandle klass, |
duke@435 | 597 | Handle class_loader, |
duke@435 | 598 | Handle protection_domain, TRAPS); |
duke@435 | 599 | |
duke@435 | 600 | friend class VM_PopulateDumpSharedSpace; |
duke@435 | 601 | friend class TraversePlaceholdersClosure; |
duke@435 | 602 | static Dictionary* dictionary() { return _dictionary; } |
duke@435 | 603 | static Dictionary* shared_dictionary() { return _shared_dictionary; } |
duke@435 | 604 | static PlaceholderTable* placeholders() { return _placeholders; } |
duke@435 | 605 | static LoaderConstraintTable* constraints() { return _loader_constraints; } |
duke@435 | 606 | static ResolutionErrorTable* resolution_errors() { return _resolution_errors; } |
jrose@1145 | 607 | static SymbolPropertyTable* invoke_method_table() { return _invoke_method_table; } |
duke@435 | 608 | |
duke@435 | 609 | // Basic loading operations |
coleenp@4037 | 610 | static Klass* resolve_instance_class_or_null(Symbol* class_name, Handle class_loader, Handle protection_domain, TRAPS); |
coleenp@4037 | 611 | static Klass* resolve_array_class_or_null(Symbol* class_name, Handle class_loader, Handle protection_domain, TRAPS); |
coleenp@2497 | 612 | static instanceKlassHandle handle_parallel_super_load(Symbol* class_name, Symbol* supername, Handle class_loader, Handle protection_domain, Handle lockObject, TRAPS); |
duke@435 | 613 | // Wait on SystemDictionary_lock; unlocks lockObject before |
duke@435 | 614 | // waiting; relocks lockObject with correct recursion count |
duke@435 | 615 | // after waiting, but before reentering SystemDictionary_lock |
duke@435 | 616 | // to preserve lock order semantics. |
duke@435 | 617 | static void double_lock_wait(Handle lockObject, TRAPS); |
duke@435 | 618 | static void define_instance_class(instanceKlassHandle k, TRAPS); |
coleenp@2497 | 619 | static instanceKlassHandle find_or_define_instance_class(Symbol* class_name, |
duke@435 | 620 | Handle class_loader, |
duke@435 | 621 | instanceKlassHandle k, TRAPS); |
coleenp@2497 | 622 | static instanceKlassHandle load_shared_class(Symbol* class_name, |
duke@435 | 623 | Handle class_loader, TRAPS); |
duke@435 | 624 | static instanceKlassHandle load_shared_class(instanceKlassHandle ik, |
duke@435 | 625 | Handle class_loader, TRAPS); |
coleenp@4751 | 626 | static void clean_up_shared_class(instanceKlassHandle ik, Handle class_loader, TRAPS); |
coleenp@2497 | 627 | static instanceKlassHandle load_instance_class(Symbol* class_name, Handle class_loader, TRAPS); |
duke@435 | 628 | static Handle compute_loader_lock_object(Handle class_loader, TRAPS); |
duke@435 | 629 | static void check_loader_lock_contention(Handle loader_lock, TRAPS); |
acorn@949 | 630 | static bool is_parallelCapable(Handle class_loader); |
acorn@1510 | 631 | static bool is_parallelDefine(Handle class_loader); |
duke@435 | 632 | |
twisti@4866 | 633 | public: |
twisti@4866 | 634 | static bool is_ext_class_loader(Handle class_loader); |
twisti@4866 | 635 | |
twisti@4866 | 636 | private: |
coleenp@4037 | 637 | static Klass* find_shared_class(Symbol* class_name); |
duke@435 | 638 | |
duke@435 | 639 | // Setup link to hierarchy |
duke@435 | 640 | static void add_to_hierarchy(instanceKlassHandle k, TRAPS); |
duke@435 | 641 | |
sla@5237 | 642 | // event based tracing |
sla@5237 | 643 | static void post_class_load_event(TracingTime start_time, instanceKlassHandle k, |
sla@5237 | 644 | Handle initiating_loader); |
duke@435 | 645 | // We pass in the hashtable index so we can calculate it outside of |
duke@435 | 646 | // the SystemDictionary_lock. |
duke@435 | 647 | |
duke@435 | 648 | // Basic find on loaded classes |
coleenp@4037 | 649 | static Klass* find_class(int index, unsigned int hash, |
coleenp@4037 | 650 | Symbol* name, ClassLoaderData* loader_data); |
coleenp@4037 | 651 | static Klass* find_class(Symbol* class_name, ClassLoaderData* loader_data); |
duke@435 | 652 | |
duke@435 | 653 | // Basic find on classes in the midst of being loaded |
coleenp@4037 | 654 | static Symbol* find_placeholder(Symbol* name, ClassLoaderData* loader_data); |
duke@435 | 655 | |
duke@435 | 656 | // Updating entry in dictionary |
duke@435 | 657 | // Add a completely loaded class |
coleenp@2497 | 658 | static void add_klass(int index, Symbol* class_name, |
coleenp@4037 | 659 | ClassLoaderData* loader_data, KlassHandle obj); |
duke@435 | 660 | |
duke@435 | 661 | // Add a placeholder for a class being loaded |
duke@435 | 662 | static void add_placeholder(int index, |
coleenp@2497 | 663 | Symbol* class_name, |
coleenp@4037 | 664 | ClassLoaderData* loader_data); |
duke@435 | 665 | static void remove_placeholder(int index, |
coleenp@2497 | 666 | Symbol* class_name, |
coleenp@4037 | 667 | ClassLoaderData* loader_data); |
duke@435 | 668 | |
duke@435 | 669 | // Performs cleanups after resolve_super_or_fail. This typically needs |
duke@435 | 670 | // to be called on failure. |
duke@435 | 671 | // Won't throw, but can block. |
coleenp@2497 | 672 | static void resolution_cleanups(Symbol* class_name, |
coleenp@4037 | 673 | ClassLoaderData* loader_data, |
duke@435 | 674 | TRAPS); |
duke@435 | 675 | |
duke@435 | 676 | // Initialization |
duke@435 | 677 | static void initialize_preloaded_classes(TRAPS); |
duke@435 | 678 | |
duke@435 | 679 | // Class loader constraints |
duke@435 | 680 | static void check_constraints(int index, unsigned int hash, |
duke@435 | 681 | instanceKlassHandle k, Handle loader, |
duke@435 | 682 | bool defining, TRAPS); |
duke@435 | 683 | static void update_dictionary(int d_index, unsigned int d_hash, |
duke@435 | 684 | int p_index, unsigned int p_hash, |
coleenp@4037 | 685 | instanceKlassHandle k, Handle loader, |
coleenp@4037 | 686 | TRAPS); |
duke@435 | 687 | |
duke@435 | 688 | // Variables holding commonly used klasses (preloaded) |
coleenp@4037 | 689 | static Klass* _well_known_klasses[]; |
duke@435 | 690 | |
duke@435 | 691 | // Lazily loaded klasses |
coleenp@4037 | 692 | static Klass* volatile _abstract_ownable_synchronizer_klass; |
duke@435 | 693 | |
jrose@567 | 694 | // table of box klasses (int_klass, etc.) |
coleenp@4037 | 695 | static Klass* _box_klasses[T_VOID+1]; |
duke@435 | 696 | |
duke@435 | 697 | static oop _java_system_loader; |
duke@435 | 698 | |
duke@435 | 699 | static bool _has_loadClassInternal; |
duke@435 | 700 | static bool _has_checkPackageAccess; |
duke@435 | 701 | }; |
jrose@1100 | 702 | |
stefank@2314 | 703 | #endif // SHARE_VM_CLASSFILE_SYSTEMDICTIONARY_HPP |