/*
 * Copyright (c) 2003, 2020, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
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package sun.jvm.hotspot.memory;

import java.util.*;
import sun.jvm.hotspot.debugger.*;
import sun.jvm.hotspot.classfile.*;
import sun.jvm.hotspot.oops.*;
import sun.jvm.hotspot.types.*;
import sun.jvm.hotspot.runtime.*;
import sun.jvm.hotspot.utilities.*;
import sun.jvm.hotspot.utilities.Observable;
import sun.jvm.hotspot.utilities.Observer;

public class Dictionary extends sun.jvm.hotspot.utilities.Hashtable {
  static {
    VM.registerVMInitializedObserver(new Observer() {
        public void update(Observable o, Object data) {
          initialize(VM.getVM().getTypeDataBase());
        }
      });
  }

  private static synchronized void initialize(TypeDataBase db) {
    // just checking that the type exists
    Type type = db.lookupType("Dictionary");
  }

  public Dictionary(Address addr) {
    super(addr);
  }

  // this is overriden here so that Hashtable.bucket will return
  // object of DictionaryEntry.class
  protected Class<? extends HashtableEntry> getHashtableEntryClass() {
    return DictionaryEntry.class;
  }

  
All classes, and their initiating class loader, passed in.
/** All classes, and their initiating class loader, passed in. */
public void allEntriesDo(ClassLoaderDataGraph.ClassAndLoaderVisitor v, Oop loader) { int tblSize = tableSize(); for (int index = 0; index < tblSize; index++) { for (DictionaryEntry probe = (DictionaryEntry) bucket(index); probe != null; probe = (DictionaryEntry) probe.next()) { Klass k = probe.klass(); // Only visit InstanceKlasses that are at least in the "loaded" init_state. Otherwise // the InstanceKlass won't have some required fields initialized, which can cause problems. if (k instanceof InstanceKlass && !((InstanceKlass)k).isLoaded()) { continue; } v.visit(k, loader); } } } // - Internals only below this point private DictionaryEntry getEntry(int index, long hash, Symbol className) { for (DictionaryEntry entry = (DictionaryEntry) bucket(index); entry != null; entry = (DictionaryEntry) entry.next()) { if (entry.hash() == hash && entry.equals(className)) { return entry; } } return null; } public boolean contains(Klass c) { long hash = computeHash(c.getName()); int index = hashToIndex(hash); for (DictionaryEntry entry = (DictionaryEntry) bucket(index); entry != null; entry = (DictionaryEntry) entry.next()) { if (entry.literalValue().equals(c.getAddress())) { return true; } } return false; } }