org.jboss.threads.ThreadLocalResettingRunnable Maven / Gradle / Ivy
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* JBoss, Home of Professional Open Source.
* Copyright 2018 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* Licensed 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.jboss.threads;
final class ThreadLocalResettingRunnable extends DelegatingRunnable {
ThreadLocalResettingRunnable(final Runnable delegate) {
super(delegate);
}
public void run() {
try {
super.run();
} finally {
Resetter.run();
}
}
public String toString() {
return "Thread-local resetting Runnable";
}
static final class Resetter {
private static final long threadLocalMapOffs;
private static final long inheritableThreadLocalMapOffs;
static {
try {
threadLocalMapOffs = JBossExecutors.unsafe.objectFieldOffset(Thread.class.getDeclaredField("threadLocals"));
inheritableThreadLocalMapOffs = JBossExecutors.unsafe.objectFieldOffset(Thread.class.getDeclaredField("inheritableThreadLocals"));
} catch (NoSuchFieldException e) {
throw new NoSuchFieldError(e.getMessage());
}
}
static void run() {
final Thread thread = Thread.currentThread();
JBossExecutors.unsafe.putObject(thread, threadLocalMapOffs, null);
JBossExecutors.unsafe.putObject(thread, inheritableThreadLocalMapOffs, null);
}
}
}