--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/classfile/dictionary.hpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,219 @@
+/*
+ * Copyright 2003-2006 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+class DictionaryEntry;
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+// The data structure for the system dictionary (and the shared system
+// dictionary).
+
+class Dictionary : public TwoOopHashtable {
+  friend class VMStructs;
+private:
+  // current iteration index.
+  static int                    _current_class_index;
+  // pointer to the current hash table entry.
+  static DictionaryEntry*       _current_class_entry;
+
+  DictionaryEntry* get_entry(int index, unsigned int hash,
+                             symbolHandle name, Handle loader);
+
+  DictionaryEntry* bucket(int i) {
+    return (DictionaryEntry*)Hashtable::bucket(i);
+  }
+
+  // The following method is not MT-safe and must be done under lock.
+  DictionaryEntry** bucket_addr(int i) {
+    return (DictionaryEntry**)Hashtable::bucket_addr(i);
+  }
+
+  void add_entry(int index, DictionaryEntry* new_entry) {
+    Hashtable::add_entry(index, (HashtableEntry*)new_entry);
+  }
+
+
+public:
+  Dictionary(int table_size);
+  Dictionary(int table_size, HashtableBucket* t, int number_of_entries);
+
+  DictionaryEntry* new_entry(unsigned int hash, klassOop klass, oop loader);
+
+  DictionaryEntry* new_entry();
+
+  void free_entry(DictionaryEntry* entry);
+
+  void add_klass(symbolHandle class_name, Handle class_loader,KlassHandle obj);
+
+  klassOop find_class(int index, unsigned int hash,
+                      symbolHandle name, Handle loader);
+
+  klassOop find_shared_class(int index, unsigned int hash, symbolHandle name);
+
+  // Compiler support
+  klassOop try_get_next_class();
+
+  // GC support
+
+  void oops_do(OopClosure* f);
+  void always_strong_classes_do(OopClosure* blk);
+  void classes_do(void f(klassOop));
+  void classes_do(void f(klassOop, TRAPS), TRAPS);
+  void classes_do(void f(klassOop, oop));
+  void classes_do(void f(klassOop, oop, TRAPS), TRAPS);
+
+  void methods_do(void f(methodOop));
+
+
+  // Classes loaded by the bootstrap loader are always strongly reachable.
+  // If we're not doing class unloading, all classes are strongly reachable.
+  static bool is_strongly_reachable(oop class_loader, oop klass) {
+    assert (klass != NULL, "should have non-null klass");
+    return (class_loader == NULL || !ClassUnloading);
+  }
+
+  // Unload (that is, break root links to) all unmarked classes and
+  // loaders.  Returns "true" iff something was unloaded.
+  bool do_unloading(BoolObjectClosure* is_alive);
+
+  // Protection domains
+  klassOop find(int index, unsigned int hash, symbolHandle name,
+                Handle loader, Handle protection_domain, TRAPS);
+  bool is_valid_protection_domain(int index, unsigned int hash,
+                                  symbolHandle name, Handle class_loader,
+                                  Handle protection_domain);
+  void add_protection_domain(int index, unsigned int hash,
+                             instanceKlassHandle klass, Handle loader,
+                             Handle protection_domain, TRAPS);
+
+  // Sharing support
+  void dump(SerializeOopClosure* soc);
+  void restore(SerializeOopClosure* soc);
+  void reorder_dictionary();
+
+
+#ifndef PRODUCT
+  void print();
+#endif
+  void verify();
+};
+
+// The following classes can be in dictionary.cpp, but we need these
+// to be in header file so that SA's vmStructs can access.
+
+class ProtectionDomainEntry :public CHeapObj {
+  friend class VMStructs;
+ public:
+  ProtectionDomainEntry* _next;
+  oop                    _protection_domain;
+
+  ProtectionDomainEntry(oop protection_domain, ProtectionDomainEntry* next) {
+    _protection_domain = protection_domain;
+    _next              = next;
+  }
+
+  ProtectionDomainEntry* next() { return _next; }
+  oop protection_domain() { return _protection_domain; }
+};
+
+// An entry in the system dictionary, this describes a class as
+// { klassOop, loader, protection_domain }.
+
+class DictionaryEntry : public HashtableEntry {
+  friend class VMStructs;
+ private:
+  // Contains the set of approved protection domains that can access
+  // this system dictionary entry.
+  ProtectionDomainEntry* _pd_set;
+  oop                    _loader;
+
+
+ public:
+  // Tells whether a protection is in the approved set.
+  bool contains_protection_domain(oop protection_domain) const;
+  // Adds a protection domain to the approved set.
+  void add_protection_domain(oop protection_domain);
+
+  klassOop klass() const { return (klassOop)literal(); }
+  klassOop* klass_addr() { return (klassOop*)literal_addr(); }
+
+  DictionaryEntry* next() const {
+    return (DictionaryEntry*)HashtableEntry::next();
+  }
+
+  DictionaryEntry** next_addr() {
+    return (DictionaryEntry**)HashtableEntry::next_addr();
+  }
+
+  oop loader() const { return _loader; }
+  void set_loader(oop loader) { _loader = loader; }
+  oop* loader_addr() { return &_loader; }
+
+  ProtectionDomainEntry* pd_set() const { return _pd_set; }
+  void set_pd_set(ProtectionDomainEntry* pd_set) { _pd_set = pd_set; }
+
+  bool has_protection_domain() { return _pd_set != NULL; }
+
+  // Tells whether the initiating class' protection can access the this _klass
+  bool is_valid_protection_domain(Handle protection_domain) {
+    if (!ProtectionDomainVerification) return true;
+    if (!SystemDictionary::has_checkPackageAccess()) return true;
+
+    return protection_domain() == NULL
+         ? true
+         : contains_protection_domain(protection_domain());
+  }
+
+
+  void protection_domain_set_oops_do(OopClosure* f) {
+    for (ProtectionDomainEntry* current = _pd_set;
+                                current != NULL;
+                                current = current->_next) {
+      f->do_oop(&(current->_protection_domain));
+    }
+  }
+
+  void verify_protection_domain_set() {
+    for (ProtectionDomainEntry* current = _pd_set;
+                                current != NULL;
+                                current = current->_next) {
+      current->_protection_domain->verify();
+    }
+  }
+
+  bool equals(symbolOop class_name, oop class_loader) const {
+    klassOop klass = (klassOop)literal();
+    return (instanceKlass::cast(klass)->name() == class_name &&
+            _loader == class_loader);
+  }
+
+  void print() {
+    int count = 0;
+    for (ProtectionDomainEntry* current = _pd_set;
+                                current != NULL;
+                                current = current->_next) {
+      count++;
+    }
+    tty->print_cr("pd set = #%d", count);
+  }
+};