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1 /*
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2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 // The system dictionary stores all loaded classes and maps:
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26 //
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27 // [class name,class loader] -> class i.e. [symbolOop,oop] -> klassOop
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28 //
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29 // Classes are loaded lazily. The default VM class loader is
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30 // represented as NULL.
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31
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32 // The underlying data structure is an open hash table with a fixed number
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33 // of buckets. During loading the loader object is locked, (for the VM loader
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34 // a private lock object is used). Class loading can thus be done concurrently,
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35 // but only by different loaders.
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36 //
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37 // During loading a placeholder (name, loader) is temporarily placed in
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38 // a side data structure, and is used to detect ClassCircularityErrors
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39 // and to perform verification during GC. A GC can occur in the midst
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40 // of class loading, as we call out to Java, have to take locks, etc.
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41 //
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42 // When class loading is finished, a new entry is added to the system
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43 // dictionary and the place holder is removed. Note that the protection
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44 // domain field of the system dictionary has not yet been filled in when
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45 // the "real" system dictionary entry is created.
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46 //
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47 // Clients of this class who are interested in finding if a class has
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48 // been completely loaded -- not classes in the process of being loaded --
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49 // can read the SystemDictionary unlocked. This is safe because
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50 // - entries are only deleted at safepoints
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51 // - readers cannot come to a safepoint while actively examining
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52 // an entry (an entry cannot be deleted from under a reader)
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53 // - entries must be fully formed before they are available to concurrent
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54 // readers (we must ensure write ordering)
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55 //
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56 // Note that placeholders are deleted at any time, as they are removed
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57 // when a class is completely loaded. Therefore, readers as well as writers
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58 // of placeholders must hold the SystemDictionary_lock.
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59 //
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60
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61 class Dictionary;
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62 class PlaceholderTable;
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63 class LoaderConstraintTable;
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64 class HashtableBucket;
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65 class ResolutionErrorTable;
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66
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67 class SystemDictionary : AllStatic {
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68 friend class VMStructs;
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69 friend class CompactingPermGenGen;
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70 NOT_PRODUCT(friend class instanceKlassKlass;)
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71
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72 public:
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73 // Returns a class with a given class name and class loader. Loads the
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74 // class if needed. If not found a NoClassDefFoundError or a
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75 // ClassNotFoundException is thrown, depending on the value on the
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76 // throw_error flag. For most uses the throw_error argument should be set
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77 // to true.
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78
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79 static klassOop resolve_or_fail(symbolHandle class_name, Handle class_loader, Handle protection_domain, bool throw_error, TRAPS);
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80 // Convenient call for null loader and protection domain.
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81 static klassOop resolve_or_fail(symbolHandle class_name, bool throw_error, TRAPS);
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82 private:
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83 // handle error translation for resolve_or_null results
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84 static klassOop handle_resolution_exception(symbolHandle class_name, Handle class_loader, Handle protection_domain, bool throw_error, KlassHandle klass_h, TRAPS);
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85
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86 public:
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87
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88 // Returns a class with a given class name and class loader.
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89 // Loads the class if needed. If not found NULL is returned.
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90 static klassOop resolve_or_null(symbolHandle class_name, Handle class_loader, Handle protection_domain, TRAPS);
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91 // Version with null loader and protection domain
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92 static klassOop resolve_or_null(symbolHandle class_name, TRAPS);
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93
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94 // Resolve a superclass or superinterface. Called from ClassFileParser,
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95 // parse_interfaces, resolve_instance_class_or_null, load_shared_class
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96 // "child_name" is the class whose super class or interface is being resolved.
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97 static klassOop resolve_super_or_fail(symbolHandle child_name,
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98 symbolHandle class_name,
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99 Handle class_loader,
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100 Handle protection_domain,
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101 bool is_superclass,
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102 TRAPS);
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103
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104 // Parse new stream. This won't update the system dictionary or
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105 // class hierarchy, simply parse the stream. Used by JVMTI RedefineClasses.
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106 static klassOop parse_stream(symbolHandle class_name,
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107 Handle class_loader,
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108 Handle protection_domain,
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109 ClassFileStream* st,
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110 TRAPS);
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111
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112 // Resolve from stream (called by jni_DefineClass and JVM_DefineClass)
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113 static klassOop resolve_from_stream(symbolHandle class_name, Handle class_loader, Handle protection_domain, ClassFileStream* st, TRAPS);
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114
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115 // Lookup an already loaded class. If not found NULL is returned.
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116 static klassOop find(symbolHandle class_name, Handle class_loader, Handle protection_domain, TRAPS);
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117
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118 // Lookup an already loaded instance or array class.
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119 // Do not make any queries to class loaders; consult only the cache.
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120 // If not found NULL is returned.
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121 static klassOop find_instance_or_array_klass(symbolHandle class_name,
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122 Handle class_loader,
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123 Handle protection_domain,
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124 TRAPS);
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125
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126 // Lookup an instance or array class that has already been loaded
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127 // either into the given class loader, or else into another class
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128 // loader that is constrained (via loader constraints) to produce
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129 // a consistent class. Do not take protection domains into account.
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130 // Do not make any queries to class loaders; consult only the cache.
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131 // Return NULL if the class is not found.
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132 //
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133 // This function is a strict superset of find_instance_or_array_klass.
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134 // This function (the unchecked version) makes a conservative prediction
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135 // of the result of the checked version, assuming successful lookup.
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136 // If both functions return non-null, they must return the same value.
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137 // Also, the unchecked version may sometimes be non-null where the
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138 // checked version is null. This can occur in several ways:
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139 // 1. No query has yet been made to the class loader.
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140 // 2. The class loader was queried, but chose not to delegate.
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141 // 3. ClassLoader.checkPackageAccess rejected a proposed protection domain.
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142 // 4. Loading was attempted, but there was a linkage error of some sort.
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143 // In all of these cases, the loader constraints on this type are
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144 // satisfied, and it is safe for classes in the given class loader
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145 // to manipulate strongly-typed values of the found class, subject
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146 // to local linkage and access checks.
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147 static klassOop find_constrained_instance_or_array_klass(symbolHandle class_name,
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148 Handle class_loader,
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149 TRAPS);
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150
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151 // Iterate over all klasses in dictionary
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152 // Just the classes from defining class loaders
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153 static void classes_do(void f(klassOop));
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154 // Added for initialize_itable_for_klass to handle exceptions
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155 static void classes_do(void f(klassOop, TRAPS), TRAPS);
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156 // All classes, and their class loaders
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157 static void classes_do(void f(klassOop, oop));
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158 // All classes, and their class loaders
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159 // (added for helpers that use HandleMarks and ResourceMarks)
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160 static void classes_do(void f(klassOop, oop, TRAPS), TRAPS);
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161 // All entries in the placeholder table and their class loaders
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162 static void placeholders_do(void f(symbolOop, oop));
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163
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164 // Iterate over all methods in all klasses in dictionary
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165 static void methods_do(void f(methodOop));
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166
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167 // Garbage collection support
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168
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169 // This method applies "blk->do_oop" to all the pointers to "system"
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170 // classes and loaders.
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171 static void always_strong_oops_do(OopClosure* blk);
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172 static void always_strong_classes_do(OopClosure* blk);
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173 // This method applies "blk->do_oop" to all the placeholders.
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174 static void placeholders_do(OopClosure* blk);
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175
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176 // Unload (that is, break root links to) all unmarked classes and
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177 // loaders. Returns "true" iff something was unloaded.
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178 static bool do_unloading(BoolObjectClosure* is_alive);
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179
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180 // Applies "f->do_oop" to all root oops in the system dictionary.
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181 static void oops_do(OopClosure* f);
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182
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183 // System loader lock
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184 static oop system_loader_lock() { return _system_loader_lock_obj; }
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185
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186 private:
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187 // Traverses preloaded oops: various system classes. These are
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188 // guaranteed to be in the perm gen.
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189 static void preloaded_oops_do(OopClosure* f);
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190 static void lazily_loaded_oops_do(OopClosure* f);
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191
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192 public:
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193 // Sharing support.
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194 static void reorder_dictionary();
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195 static void copy_buckets(char** top, char* end);
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196 static void copy_table(char** top, char* end);
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197 static void reverse();
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198 static void set_shared_dictionary(HashtableBucket* t, int length,
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199 int number_of_entries);
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200 // Printing
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201 static void print() PRODUCT_RETURN;
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202 static void print_class_statistics() PRODUCT_RETURN;
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203 static void print_method_statistics() PRODUCT_RETURN;
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204
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205 // Number of contained klasses
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206 // This is both fully loaded classes and classes in the process
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207 // of being loaded
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208 static int number_of_classes();
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209
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210 // Monotonically increasing counter which grows as classes are
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211 // loaded or modifications such as hot-swapping or setting/removing
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212 // of breakpoints are performed
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213 static inline int number_of_modifications() { assert_locked_or_safepoint(Compile_lock); return _number_of_modifications; }
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214 // Needed by evolution and breakpoint code
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215 static inline void notice_modification() { assert_locked_or_safepoint(Compile_lock); ++_number_of_modifications; }
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216
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217 // Verification
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218 static void verify();
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219
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220 #ifdef ASSERT
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221 static bool is_internal_format(symbolHandle class_name);
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222 #endif
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223
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224 // Verify class is in dictionary
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225 static void verify_obj_klass_present(Handle obj,
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226 symbolHandle class_name,
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227 Handle class_loader);
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228
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229 // Initialization
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230 static void initialize(TRAPS);
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231
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232 // Fast access to commonly used classes (preloaded)
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233 static klassOop check_klass(klassOop k) {
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234 assert(k != NULL, "preloaded klass not initialized");
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235 return k;
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236 }
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237
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238 public:
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239 static klassOop object_klass() { return check_klass(_object_klass); }
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240 static klassOop string_klass() { return check_klass(_string_klass); }
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241 static klassOop class_klass() { return check_klass(_class_klass); }
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242 static klassOop cloneable_klass() { return check_klass(_cloneable_klass); }
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243 static klassOop classloader_klass() { return check_klass(_classloader_klass); }
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244 static klassOop serializable_klass() { return check_klass(_serializable_klass); }
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245 static klassOop system_klass() { return check_klass(_system_klass); }
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246
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247 static klassOop throwable_klass() { return check_klass(_throwable_klass); }
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248 static klassOop error_klass() { return check_klass(_error_klass); }
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249 static klassOop threaddeath_klass() { return check_klass(_threaddeath_klass); }
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250 static klassOop exception_klass() { return check_klass(_exception_klass); }
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251 static klassOop runtime_exception_klass() { return check_klass(_runtime_exception_klass); }
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252 static klassOop classNotFoundException_klass() { return check_klass(_classNotFoundException_klass); }
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253 static klassOop noClassDefFoundError_klass() { return check_klass(_noClassDefFoundError_klass); }
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254 static klassOop linkageError_klass() { return check_klass(_linkageError_klass); }
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255 static klassOop ClassCastException_klass() { return check_klass(_classCastException_klass); }
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256 static klassOop ArrayStoreException_klass() { return check_klass(_arrayStoreException_klass); }
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257 static klassOop virtualMachineError_klass() { return check_klass(_virtualMachineError_klass); }
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258 static klassOop OutOfMemoryError_klass() { return check_klass(_outOfMemoryError_klass); }
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259 static klassOop StackOverflowError_klass() { return check_klass(_StackOverflowError_klass); }
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260 static klassOop IllegalMonitorStateException_klass() { return check_klass(_illegalMonitorStateException_klass); }
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261 static klassOop protectionDomain_klass() { return check_klass(_protectionDomain_klass); }
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262 static klassOop AccessControlContext_klass() { return check_klass(_AccessControlContext_klass); }
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263 static klassOop reference_klass() { return check_klass(_reference_klass); }
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264 static klassOop soft_reference_klass() { return check_klass(_soft_reference_klass); }
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265 static klassOop weak_reference_klass() { return check_klass(_weak_reference_klass); }
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266 static klassOop final_reference_klass() { return check_klass(_final_reference_klass); }
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267 static klassOop phantom_reference_klass() { return check_klass(_phantom_reference_klass); }
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268 static klassOop finalizer_klass() { return check_klass(_finalizer_klass); }
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269
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270 static klassOop thread_klass() { return check_klass(_thread_klass); }
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271 static klassOop threadGroup_klass() { return check_klass(_threadGroup_klass); }
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272 static klassOop properties_klass() { return check_klass(_properties_klass); }
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273 static klassOop reflect_accessible_object_klass() { return check_klass(_reflect_accessible_object_klass); }
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274 static klassOop reflect_field_klass() { return check_klass(_reflect_field_klass); }
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275 static klassOop reflect_method_klass() { return check_klass(_reflect_method_klass); }
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276 static klassOop reflect_constructor_klass() { return check_klass(_reflect_constructor_klass); }
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277 static klassOop reflect_method_accessor_klass() {
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278 assert(JDK_Version::is_gte_jdk14x_version() && UseNewReflection, "JDK 1.4 only");
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279 return check_klass(_reflect_method_accessor_klass);
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280 }
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281 static klassOop reflect_constructor_accessor_klass() {
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282 assert(JDK_Version::is_gte_jdk14x_version() && UseNewReflection, "JDK 1.4 only");
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283 return check_klass(_reflect_constructor_accessor_klass);
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284 }
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285 // NOTE: needed too early in bootstrapping process to have checks based on JDK version
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286 static klassOop reflect_magic_klass() { return _reflect_magic_klass; }
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287 static klassOop reflect_delegating_classloader_klass() { return _reflect_delegating_classloader_klass; }
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288 static klassOop reflect_constant_pool_klass() {
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289 assert(JDK_Version::is_gte_jdk15x_version(), "JDK 1.5 only");
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290 return _reflect_constant_pool_klass;
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291 }
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292 static klassOop reflect_unsafe_static_field_accessor_impl_klass() {
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293 assert(JDK_Version::is_gte_jdk15x_version(), "JDK 1.5 only");
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294 return _reflect_unsafe_static_field_accessor_impl_klass;
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295 }
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296
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297 static klassOop vector_klass() { return check_klass(_vector_klass); }
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298 static klassOop hashtable_klass() { return check_klass(_hashtable_klass); }
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299 static klassOop stringBuffer_klass() { return check_klass(_stringBuffer_klass); }
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300 static klassOop stackTraceElement_klass() { return check_klass(_stackTraceElement_klass); }
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301
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302 static klassOop java_nio_Buffer_klass() { return check_klass(_java_nio_Buffer_klass); }
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303
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304 static klassOop sun_misc_AtomicLongCSImpl_klass() { return _sun_misc_AtomicLongCSImpl_klass; }
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305
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306 // To support incremental JRE downloads (KERNEL JRE). Null if not present.
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307 static klassOop sun_jkernel_DownloadManager_klass() { return _sun_jkernel_DownloadManager_klass; }
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308
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309 static klassOop boolean_klass() { return check_klass(_boolean_klass); }
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310 static klassOop char_klass() { return check_klass(_char_klass); }
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311 static klassOop float_klass() { return check_klass(_float_klass); }
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312 static klassOop double_klass() { return check_klass(_double_klass); }
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313 static klassOop byte_klass() { return check_klass(_byte_klass); }
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314 static klassOop short_klass() { return check_klass(_short_klass); }
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315 static klassOop int_klass() { return check_klass(_int_klass); }
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316 static klassOop long_klass() { return check_klass(_long_klass); }
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317
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318 static klassOop box_klass(BasicType t) {
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319 assert((uint)t < T_VOID+1, "range check");
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320 return check_klass(_box_klasses[t]);
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321 }
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322 static BasicType box_klass_type(klassOop k); // inverse of box_klass
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323
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324 // methods returning lazily loaded klasses
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325 // The corresponding method to load the class must be called before calling them.
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326 static klassOop abstract_ownable_synchronizer_klass() { return check_klass(_abstract_ownable_synchronizer_klass); }
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327
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328 static void load_abstract_ownable_synchronizer_klass(TRAPS);
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329
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330 private:
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331 // Tells whether ClassLoader.loadClassInternal is present
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332 static bool has_loadClassInternal() { return _has_loadClassInternal; }
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333
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334 public:
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335 // Tells whether ClassLoader.checkPackageAccess is present
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336 static bool has_checkPackageAccess() { return _has_checkPackageAccess; }
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337
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338 static bool class_klass_loaded() { return _class_klass != NULL; }
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339 static bool cloneable_klass_loaded() { return _cloneable_klass != NULL; }
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340
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341 // Returns default system loader
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342 static oop java_system_loader();
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343
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344 // Compute the default system loader
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345 static void compute_java_system_loader(TRAPS);
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346
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347 private:
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348 // Mirrors for primitive classes (created eagerly)
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349 static oop check_mirror(oop m) {
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350 assert(m != NULL, "mirror not initialized");
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351 return m;
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352 }
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353
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354 public:
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355 // Note: java_lang_Class::primitive_type is the inverse of java_mirror
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356
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357 // Check class loader constraints
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358 static bool add_loader_constraint(symbolHandle name, Handle loader1,
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359 Handle loader2, TRAPS);
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360 static char* check_signature_loaders(symbolHandle signature, Handle loader1,
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361 Handle loader2, bool is_method, TRAPS);
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362
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363 // Utility for printing loader "name" as part of tracing constraints
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364 static const char* loader_name(oop loader) {
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365 return ((loader) == NULL ? "<bootloader>" :
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366 instanceKlass::cast((loader)->klass())->name()->as_C_string() );
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367 }
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368
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369 // Record the error when the first attempt to resolve a reference from a constant
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370 // pool entry to a class fails.
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371 static void add_resolution_error(constantPoolHandle pool, int which, symbolHandle error);
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372 static symbolOop find_resolution_error(constantPoolHandle pool, int which);
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373
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374 private:
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375
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376 enum Constants {
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377 _loader_constraint_size = 107, // number of entries in constraint table
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378 _resolution_error_size = 107, // number of entries in resolution error table
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379 _nof_buckets = 1009 // number of buckets in hash table
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380 };
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381
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382
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383 // Static variables
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384
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385 // Hashtable holding loaded classes.
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386 static Dictionary* _dictionary;
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387
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388 // Hashtable holding placeholders for classes being loaded.
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389 static PlaceholderTable* _placeholders;
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390
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391 // Hashtable holding classes from the shared archive.
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392 static Dictionary* _shared_dictionary;
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393
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394 // Monotonically increasing counter which grows with
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395 // _number_of_classes as well as hot-swapping and breakpoint setting
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396 // and removal.
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397 static int _number_of_modifications;
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398
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399 // Lock object for system class loader
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400 static oop _system_loader_lock_obj;
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401
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402 // Constraints on class loaders
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403 static LoaderConstraintTable* _loader_constraints;
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404
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405 // Resolution errors
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406 static ResolutionErrorTable* _resolution_errors;
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407
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408 public:
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409 // for VM_CounterDecay iteration support
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410 friend class CounterDecay;
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411 static klassOop try_get_next_class();
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412
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413 private:
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414 static void validate_protection_domain(instanceKlassHandle klass,
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415 Handle class_loader,
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416 Handle protection_domain, TRAPS);
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417
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418 friend class VM_PopulateDumpSharedSpace;
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419 friend class TraversePlaceholdersClosure;
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420 static Dictionary* dictionary() { return _dictionary; }
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421 static Dictionary* shared_dictionary() { return _shared_dictionary; }
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422 static PlaceholderTable* placeholders() { return _placeholders; }
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423 static LoaderConstraintTable* constraints() { return _loader_constraints; }
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424 static ResolutionErrorTable* resolution_errors() { return _resolution_errors; }
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425
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426 // Basic loading operations
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427 static klassOop resolve_instance_class_or_null(symbolHandle class_name, Handle class_loader, Handle protection_domain, TRAPS);
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428 static klassOop resolve_array_class_or_null(symbolHandle class_name, Handle class_loader, Handle protection_domain, TRAPS);
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429 static instanceKlassHandle handle_parallel_super_load(symbolHandle class_name, symbolHandle supername, Handle class_loader, Handle protection_domain, Handle lockObject, TRAPS);
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430 // Wait on SystemDictionary_lock; unlocks lockObject before
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431 // waiting; relocks lockObject with correct recursion count
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432 // after waiting, but before reentering SystemDictionary_lock
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433 // to preserve lock order semantics.
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434 static void double_lock_wait(Handle lockObject, TRAPS);
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435 static void define_instance_class(instanceKlassHandle k, TRAPS);
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436 static instanceKlassHandle find_or_define_instance_class(symbolHandle class_name,
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437 Handle class_loader,
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438 instanceKlassHandle k, TRAPS);
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439 static instanceKlassHandle load_shared_class(symbolHandle class_name,
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440 Handle class_loader, TRAPS);
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441 static instanceKlassHandle load_shared_class(instanceKlassHandle ik,
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442 Handle class_loader, TRAPS);
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443 static instanceKlassHandle load_instance_class(symbolHandle class_name, Handle class_loader, TRAPS);
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444 static Handle compute_loader_lock_object(Handle class_loader, TRAPS);
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445 static void check_loader_lock_contention(Handle loader_lock, TRAPS);
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446
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447 static klassOop find_shared_class(symbolHandle class_name);
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448
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449 // Setup link to hierarchy
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450 static void add_to_hierarchy(instanceKlassHandle k, TRAPS);
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451
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452 private:
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453 // We pass in the hashtable index so we can calculate it outside of
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454 // the SystemDictionary_lock.
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455
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456 // Basic find on loaded classes
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457 static klassOop find_class(int index, unsigned int hash,
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458 symbolHandle name, Handle loader);
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459
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460 // Basic find on classes in the midst of being loaded
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461 static symbolOop find_placeholder(int index, unsigned int hash,
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462 symbolHandle name, Handle loader);
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463
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464 // Basic find operation of loaded classes and classes in the midst
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465 // of loading; used for assertions and verification only.
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466 static oop find_class_or_placeholder(symbolHandle class_name,
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467 Handle class_loader);
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468
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469 // Updating entry in dictionary
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470 // Add a completely loaded class
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471 static void add_klass(int index, symbolHandle class_name,
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472 Handle class_loader, KlassHandle obj);
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473
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474 // Add a placeholder for a class being loaded
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475 static void add_placeholder(int index,
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476 symbolHandle class_name,
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477 Handle class_loader);
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478 static void remove_placeholder(int index,
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479 symbolHandle class_name,
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480 Handle class_loader);
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481
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482 // Performs cleanups after resolve_super_or_fail. This typically needs
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483 // to be called on failure.
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484 // Won't throw, but can block.
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485 static void resolution_cleanups(symbolHandle class_name,
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486 Handle class_loader,
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487 TRAPS);
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488
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489 // Initialization
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490 static void initialize_preloaded_classes(TRAPS);
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491
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492 // Class loader constraints
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493 static void check_constraints(int index, unsigned int hash,
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494 instanceKlassHandle k, Handle loader,
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495 bool defining, TRAPS);
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496 static void update_dictionary(int d_index, unsigned int d_hash,
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497 int p_index, unsigned int p_hash,
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498 instanceKlassHandle k, Handle loader, TRAPS);
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499
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500 // Variables holding commonly used klasses (preloaded)
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501 static klassOop _object_klass;
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502 static klassOop _string_klass;
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503 static klassOop _class_klass;
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504 static klassOop _cloneable_klass;
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505 static klassOop _classloader_klass;
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506 static klassOop _serializable_klass;
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507 static klassOop _system_klass;
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508
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509 static klassOop _throwable_klass;
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510 static klassOop _error_klass;
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511 static klassOop _threaddeath_klass;
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512 static klassOop _exception_klass;
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513 static klassOop _runtime_exception_klass;
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514 static klassOop _classNotFoundException_klass;
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515 static klassOop _noClassDefFoundError_klass;
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516 static klassOop _linkageError_klass;
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517 static klassOop _classCastException_klass;
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518 static klassOop _arrayStoreException_klass;
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|
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519 static klassOop _virtualMachineError_klass;
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520 static klassOop _outOfMemoryError_klass;
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|
521 static klassOop _StackOverflowError_klass;
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522 static klassOop _illegalMonitorStateException_klass;
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|
523 static klassOop _protectionDomain_klass;
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|
|
524 static klassOop _AccessControlContext_klass;
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525 static klassOop _reference_klass;
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|
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526 static klassOop _soft_reference_klass;
|
|
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527 static klassOop _weak_reference_klass;
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|
|
528 static klassOop _final_reference_klass;
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|
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529 static klassOop _phantom_reference_klass;
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530 static klassOop _finalizer_klass;
|
|
|
531
|
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532 static klassOop _thread_klass;
|
|
|
533 static klassOop _threadGroup_klass;
|
|
|
534 static klassOop _properties_klass;
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535 static klassOop _reflect_accessible_object_klass;
|
|
|
536 static klassOop _reflect_field_klass;
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|
|
537 static klassOop _reflect_method_klass;
|
|
|
538 static klassOop _reflect_constructor_klass;
|
|
|
539 // 1.4 reflection implementation
|
|
|
540 static klassOop _reflect_magic_klass;
|
|
|
541 static klassOop _reflect_method_accessor_klass;
|
|
|
542 static klassOop _reflect_constructor_accessor_klass;
|
|
|
543 static klassOop _reflect_delegating_classloader_klass;
|
|
|
544 // 1.5 annotations implementation
|
|
|
545 static klassOop _reflect_constant_pool_klass;
|
|
|
546 static klassOop _reflect_unsafe_static_field_accessor_impl_klass;
|
|
|
547
|
|
|
548 static klassOop _stringBuffer_klass;
|
|
|
549 static klassOop _vector_klass;
|
|
|
550 static klassOop _hashtable_klass;
|
|
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551
|
|
|
552 static klassOop _stackTraceElement_klass;
|
|
|
553
|
|
|
554 static klassOop _java_nio_Buffer_klass;
|
|
|
555
|
|
|
556 static klassOop _sun_misc_AtomicLongCSImpl_klass;
|
|
|
557
|
|
|
558 // KERNEL JRE support.
|
|
|
559 static klassOop _sun_jkernel_DownloadManager_klass;
|
|
|
560
|
|
|
561 // Lazily loaded klasses
|
|
|
562 static volatile klassOop _abstract_ownable_synchronizer_klass;
|
|
|
563
|
|
|
564 // Box klasses
|
|
|
565 static klassOop _boolean_klass;
|
|
|
566 static klassOop _char_klass;
|
|
|
567 static klassOop _float_klass;
|
|
|
568 static klassOop _double_klass;
|
|
|
569 static klassOop _byte_klass;
|
|
|
570 static klassOop _short_klass;
|
|
|
571 static klassOop _int_klass;
|
|
|
572 static klassOop _long_klass;
|
|
|
573
|
|
|
574 // table of same
|
|
|
575 static klassOop _box_klasses[T_VOID+1];
|
|
|
576
|
|
|
577 static oop _java_system_loader;
|
|
|
578
|
|
|
579 static bool _has_loadClassInternal;
|
|
|
580 static bool _has_checkPackageAccess;
|
|
|
581 };
|
