|
What this is
Other links
The source code/* * Copyright 1999-2004 The Apache Software Foundation * * 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.apache.tomcat.util.threads; /** * The reaper is a background thread with which ticks every minute * and calls registered objects to allow reaping of old session * data. * * @author James Duncan Davidson [duncan@eng.sun.com] * @author Costin Manolache */ public class Reaper extends Thread { private boolean daemon = false; public Reaper() { if (daemon) this.setDaemon(true); this.setName("TomcatReaper"); } public Reaper(String name) { if (daemon) this.setDaemon(true); this.setName(name); } private long interval = 1000 * 60; //ms // XXX TODO Allow per/callback interval, find next, etc // Right now the "interval" is used for all callbacks // and it represent a sleep between runs. ThreadPoolRunnable cbacks[] = new ThreadPoolRunnable[30]; // XXX max Object tdata[][] = new Object[30][]; // XXX max int count = 0; /** Adding and removing callbacks is synchronized */ Object lock = new Object(); static boolean running = true; // XXX Should be called 'interval' not defaultInterval public void setDefaultInterval(long t) { interval = t; } public long getDefaultIntervale() { return interval; } public int addCallback(ThreadPoolRunnable c, int interval) { synchronized (lock) { cbacks[count] = c; count++; return count - 1; } } public void removeCallback(int idx) { synchronized (lock) { count--; cbacks[idx] = cbacks[count]; cbacks[count] = null; } } public void startReaper() { running = true; this.start(); } public synchronized void stopReaper() { running = false; System.out.println("Stop reaper "); this.interrupt(); // notify() doesn't stop sleep } public void run() { while (running) { if (!running) break; try { Thread.sleep(interval); } catch (InterruptedException ie) { // sometimes will happen } if (!running) break; for (int i = 0; i < count; i++) { ThreadPoolRunnable callB = cbacks[i]; // it may be null if a callback is removed. // I think the code is correct if (callB != null) { callB.runIt(tdata[i]); } if (!running) break; } } } } |
... this post is sponsored by my books ... | |
#1 New Release! |
FP Best Seller |
Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.
A percentage of advertising revenue from
pages under the /java/jwarehouse
URI on this website is
paid back to open source projects.