1 /*
   2  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *

1135   // Debugging/initialization
1136   friend class JavaClasses;
1137 };
1138 
1139 
1140 // Interface to java.lang.ClassLoader objects
1141 
1142 #define CLASSLOADER_INJECTED_FIELDS(macro)                            \
1143   macro(java_lang_ClassLoader, loader_data,  intptr_signature, false)
1144 
1145 class java_lang_ClassLoader : AllStatic {
1146  private:
1147   // The fake offsets are added by the class loader when java.lang.Class is loaded
1148   enum {
1149    hc_parent_offset = 0
1150   };
1151   static int _loader_data_offset;
1152   static bool offsets_computed;
1153   static int parent_offset;
1154   static int parallelCapable_offset;

1155 
1156  public:
1157   static void compute_offsets();
1158 
1159   static ClassLoaderData** loader_data_addr(oop loader);
1160   static ClassLoaderData* loader_data(oop loader);
1161 
1162   static oop parent(oop loader);
1163   static bool isAncestor(oop loader, oop cl);
1164 
1165   // Support for parallelCapable field
1166   static bool parallelCapable(oop the_class_mirror);



1167 
1168   static bool is_trusted_loader(oop loader);
1169 
1170   // Fix for 4474172
1171   static oop  non_reflection_class_loader(oop loader);
1172 
1173   // Testers
1174   static bool is_subclass(Klass* klass) {
1175     return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1176   }
1177   static bool is_instance(oop obj) {
1178     return obj != NULL && is_subclass(obj->klass());
1179   }
1180 
1181   // Debugging
1182   friend class JavaClasses;
1183   friend class ClassFileParser; // access to number_of_fake_fields
1184 };
1185 
1186 

   1 /*
   2  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *

1135   // Debugging/initialization
1136   friend class JavaClasses;
1137 };
1138 
1139 
1140 // Interface to java.lang.ClassLoader objects
1141 
1142 #define CLASSLOADER_INJECTED_FIELDS(macro)                            \
1143   macro(java_lang_ClassLoader, loader_data,  intptr_signature, false)
1144 
1145 class java_lang_ClassLoader : AllStatic {
1146  private:
1147   // The fake offsets are added by the class loader when java.lang.Class is loaded
1148   enum {
1149    hc_parent_offset = 0
1150   };
1151   static int _loader_data_offset;
1152   static bool offsets_computed;
1153   static int parent_offset;
1154   static int parallelCapable_offset;
1155   static int fullyConcurrent_offset;
1156 
1157  public:
1158   static void compute_offsets();
1159 
1160   static ClassLoaderData** loader_data_addr(oop loader);
1161   static ClassLoaderData* loader_data(oop loader);
1162 
1163   static oop parent(oop loader);
1164   static bool isAncestor(oop loader, oop cl);
1165 
1166   // Support for parallelCapable field
1167   static bool parallelCapable(oop the_class_mirror);
1168 
1169   // Support for fullyConcurrent field
1170   static bool fullyConcurrent(oop the_class_mirror);
1171 
1172   static bool is_trusted_loader(oop loader);
1173 
1174   // Fix for 4474172
1175   static oop  non_reflection_class_loader(oop loader);
1176 
1177   // Testers
1178   static bool is_subclass(Klass* klass) {
1179     return klass->is_subclass_of(SystemDictionary::ClassLoader_klass());
1180   }
1181   static bool is_instance(oop obj) {
1182     return obj != NULL && is_subclass(obj->klass());
1183   }
1184 
1185   // Debugging
1186   friend class JavaClasses;
1187   friend class ClassFileParser; // access to number_of_fake_fields
1188 };
1189 
1190