/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @author Pavel Dolgov
* @version $Revision: 1.2 $
*/
package org.apache.harmony.applet;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.IdentityHashMap;
import org.apache.harmony.awt.ContextThreadGroup;
/**
* Common context for all applets loaded from the same code base
*/
final class CodeBase {
final URL codeBase;
final URLClassLoader classLoader;
final ContextThreadGroup threadGroup;
final Factory factory;
private final IdentityHashMap<Document, DocumentSlice> docSlices = new IdentityHashMap<Document, DocumentSlice>();
CodeBase(URL url, Factory factory) {
this.codeBase = url;
this.factory = factory;
classLoader = new URLClassLoader(new URL[]{ url });
threadGroup = new ContextThreadGroup("Context-" + url.toString());
threadGroup.setMaxPriority(4);
}
DocumentSlice getDocumentSlice(Document doc) {
synchronized(docSlices) {
DocumentSlice slice = docSlices.get(doc);
if (slice == null) {
slice = new DocumentSlice(doc, this);
docSlices.put(doc, slice);
}
return slice;
}
}
void remove(DocumentSlice slice) {
boolean empty = false;
synchronized(docSlices) {
docSlices.remove(slice.document);
empty = (docSlices.size() == 0);
}
if (empty) {
threadGroup.dispose();
factory.remove(this);
}
}
}