/*
* 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.
*/
package org.apache.tomcat.util.compat;
import java.lang.reflect.Field;
import org.apache.juli.logging.Log;
import org.apache.juli.logging.LogFactory;
import org.apache.tomcat.util.res.StringManager;
public class Jre19Compat extends JreCompat {
private static final Log log = LogFactory.getLog(Jre19Compat.class);
private static final StringManager sm = StringManager.getManager(Jre19Compat.class);
private static final boolean supported;
static {
// Don't need any Java 19 specific classes (yet) so just test for one of
// the new ones for now.
Class<?> c1 = null;
try {
c1 = Class.forName("java.lang.WrongThreadException");
} catch (ClassNotFoundException cnfe) {
// Must be pre-Java 19
log.debug(sm.getString("jre19Compat.javaPre19"), cnfe);
}
supported = (c1 != null);
}
static boolean isSupported() {
return supported;
}
@Override
public Object getExecutor(Thread thread)
throws NoSuchFieldException, SecurityException, IllegalArgumentException, IllegalAccessException {
Object result = super.getExecutor(thread);
if (result == null) {
Object holder = null;
Object task = null;
try {
Field holderField = thread.getClass().getDeclaredField("holder");
holderField.setAccessible(true);
holder = holderField.get(thread);
Field taskField = holder.getClass().getDeclaredField("task");
taskField.setAccessible(true);
task = taskField.get(holder);
} catch (NoSuchFieldException nfe) {
return null;
}
if (task != null && task.getClass().getCanonicalName() != null && (task.getClass().getCanonicalName()
.equals("org.apache.tomcat.util.threads.ThreadPoolExecutor.Worker") ||
task.getClass().getCanonicalName().equals("java.util.concurrent.ThreadPoolExecutor.Worker"))) {
Field executorField = task.getClass().getDeclaredField("this$0");
executorField.setAccessible(true);
result = executorField.get(task);
}
}
return result;
}
}