src/share/vm/classfile/classLoaderData.hpp

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   1 /*
   2  * Copyright (c) 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  *


 203     assert(!(is_the_null_class_loader_data() && _unloading), "The null class loader can never be unloaded");
 204     return _unloading;
 205   }
 206   // Anonymous class loader data doesn't have anything to keep them from
 207   // being unloaded during parsing the anonymous class.
 208   void set_keep_alive(bool value) { _keep_alive = value; }
 209 
 210   unsigned int identity_hash() {
 211     return _class_loader == NULL ? 0 : _class_loader->identity_hash();
 212   }
 213 
 214   // Used when tracing from klasses.
 215   void oops_do(OopClosure* f, KlassClosure* klass_closure, bool must_claim);
 216 
 217   void classes_do(KlassClosure* klass_closure);
 218 
 219   JNIMethodBlock* jmethod_ids() const              { return _jmethod_ids; }
 220   void set_jmethod_ids(JNIMethodBlock* new_block)  { _jmethod_ids = new_block; }
 221 
 222   void print_value() { print_value_on(tty); }
 223   void print_value_on(outputStream* out) const PRODUCT_RETURN;
 224   void dump(outputStream * const out) PRODUCT_RETURN;
 225   void verify();
 226   const char* loader_name();
 227 
 228   jobject add_handle(Handle h);
 229   void add_class(Klass* k);
 230   void remove_class(Klass* k);
 231   void record_dependency(Klass* to, TRAPS);
 232   void init_dependencies(TRAPS);
 233 
 234   void add_to_deallocate_list(Metadata* m);
 235 
 236   static ClassLoaderData* class_loader_data(oop loader);
 237   static ClassLoaderData* anonymous_class_loader_data(oop loader, TRAPS);
 238   static void print_loader(ClassLoaderData *loader_data, outputStream *out);
 239 
 240   // CDS support
 241   Metaspace* ro_metaspace();
 242   Metaspace* rw_metaspace();
 243   void initialize_shared_metaspaces();
   1 /*
   2  * Copyright (c) 2012, 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  *


 203     assert(!(is_the_null_class_loader_data() && _unloading), "The null class loader can never be unloaded");
 204     return _unloading;
 205   }
 206   // Anonymous class loader data doesn't have anything to keep them from
 207   // being unloaded during parsing the anonymous class.
 208   void set_keep_alive(bool value) { _keep_alive = value; }
 209 
 210   unsigned int identity_hash() {
 211     return _class_loader == NULL ? 0 : _class_loader->identity_hash();
 212   }
 213 
 214   // Used when tracing from klasses.
 215   void oops_do(OopClosure* f, KlassClosure* klass_closure, bool must_claim);
 216 
 217   void classes_do(KlassClosure* klass_closure);
 218 
 219   JNIMethodBlock* jmethod_ids() const              { return _jmethod_ids; }
 220   void set_jmethod_ids(JNIMethodBlock* new_block)  { _jmethod_ids = new_block; }
 221 
 222   void print_value() { print_value_on(tty); }
 223   void print_value_on(outputStream* out) const;
 224   void dump(outputStream * const out) PRODUCT_RETURN;
 225   void verify();
 226   const char* loader_name();
 227 
 228   jobject add_handle(Handle h);
 229   void add_class(Klass* k);
 230   void remove_class(Klass* k);
 231   void record_dependency(Klass* to, TRAPS);
 232   void init_dependencies(TRAPS);
 233 
 234   void add_to_deallocate_list(Metadata* m);
 235 
 236   static ClassLoaderData* class_loader_data(oop loader);
 237   static ClassLoaderData* anonymous_class_loader_data(oop loader, TRAPS);
 238   static void print_loader(ClassLoaderData *loader_data, outputStream *out);
 239 
 240   // CDS support
 241   Metaspace* ro_metaspace();
 242   Metaspace* rw_metaspace();
 243   void initialize_shared_metaspaces();