2 // ========================================================================
3 // Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
4 // ------------------------------------------------------------------------
5 // All rights reserved. This program and the accompanying materials
6 // are made available under the terms of the Eclipse Public License v1.0
7 // and Apache License v2.0 which accompanies this distribution.
9 // The Eclipse Public License is available at
10 // http://www.eclipse.org/legal/epl-v10.html
12 // The Apache License v2.0 is available at
13 // http://www.opensource.org/licenses/apache2.0.php
15 // You may elect to redistribute this code under either of these licenses.
16 // ========================================================================
19 package org.eclipse.jetty.util.thread;
22 * Marker that wraps a Runnable, indicating that it is running in a thread that must not be blocked.
24 * Client code can use the thread-local {@link #isNonBlockingThread()} to detect whether they are
25 * in the context of a non-blocking thread, and perform different actions if that's the case.
27 public class NonBlockingThread implements Runnable
29 private final static ThreadLocal<Boolean> __nonBlockingThread = new ThreadLocal<>();
32 * @return whether the current thread is a thread that must not block.
34 public static boolean isNonBlockingThread()
36 return Boolean.TRUE.equals(__nonBlockingThread.get());
39 private final Runnable delegate;
41 public NonBlockingThread(Runnable delegate)
43 this.delegate = delegate;
51 __nonBlockingThread.set(Boolean.TRUE);
56 __nonBlockingThread.set(Boolean.FALSE);