Clover coverage report - Ant Coverage
Coverage timestamp: Tue Apr 8 2003 20:43:55 EST
file stats: LOC: 125   Methods: 7
NCLOC: 48   Classes: 1
 
 Source file Conditionals Statements Methods TOTAL
Watchdog.java 62.5% 90.5% 85.7% 83.3%
 1   
 /*
 2   
  * The Apache Software License, Version 1.1
 3   
  *
 4   
  * Copyright (c) 2002 The Apache Software Foundation.  All rights
 5   
  * reserved.
 6   
  *
 7   
  * Redistribution and use in source and binary forms, with or without
 8   
  * modification, are permitted provided that the following conditions
 9   
  * are met:
 10   
  *
 11   
  * 1. Redistributions of source code must retain the above copyright
 12   
  *    notice, this list of conditions and the following disclaimer.
 13   
  *
 14   
  * 2. Redistributions in binary form must reproduce the above copyright
 15   
  *    notice, this list of conditions and the following disclaimer in
 16   
  *    the documentation and/or other materials provided with the
 17   
  *    distribution.
 18   
  *
 19   
  * 3. The end-user documentation included with the redistribution, if
 20   
  *    any, must include the following acknowlegement:
 21   
  *       "This product includes software developed by the
 22   
  *        Apache Software Foundation (http://www.apache.org/)."
 23   
  *    Alternately, this acknowlegement may appear in the software itself,
 24   
  *    if and wherever such third-party acknowlegements normally appear.
 25   
  *
 26   
  * 4. The names "Ant" and "Apache Software
 27   
  *    Foundation" must not be used to endorse or promote products derived
 28   
  *    from this software without prior written permission. For written
 29   
  *    permission, please contact apache@apache.org.
 30   
  *
 31   
  * 5. Products derived from this software may not be called "Apache"
 32   
  *    nor may "Apache" appear in their names without prior written
 33   
  *    permission of the Apache Group.
 34   
  *
 35   
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 36   
  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 37   
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 38   
  * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 39   
  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 40   
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 41   
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 42   
  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 43   
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 44   
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 45   
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 46   
  * SUCH DAMAGE.
 47   
  * ====================================================================
 48   
  *
 49   
  * This software consists of voluntary contributions made by many
 50   
  * individuals on behalf of the Apache Software Foundation.  For more
 51   
  * information on the Apache Software Foundation, please see
 52   
  * <http://www.apache.org/>.
 53   
  */
 54   
 
 55   
 package org.apache.tools.ant.util;
 56   
 
 57   
 import java.util.Enumeration;
 58   
 import java.util.Vector;
 59   
 
 60   
 /**
 61   
  * Generalization of <code>ExecuteWatchdog</code>
 62   
  *
 63   
  * @since Ant 1.5
 64   
  *
 65   
  * @see org.apache.tools.ant.taskdefs.ExecuteWatchdog
 66   
  *
 67   
  * @author Stefan Bodewig
 68   
  * @author thomas.haas@softwired-inc.com
 69   
  * @author <a href="mailto:sbailliez@imediation.com">Stephane Bailliez</a>
 70   
  */
 71   
 public class Watchdog implements Runnable {
 72   
 
 73   
     private Vector observers = new Vector(1);
 74   
     private long timeout = -1;
 75   
     private boolean stopped = false;
 76   
 
 77  6
     public Watchdog(long timeout) {
 78  6
         if (timeout < 1) {
 79  0
             throw new IllegalArgumentException("timeout lesser than 1.");
 80   
         }
 81  6
         this.timeout = timeout;
 82   
     }
 83   
 
 84  6
     public void addTimeoutObserver(TimeoutObserver to) {
 85  6
         observers.addElement(to);
 86   
     }
 87   
 
 88  0
     public void removeTimeoutObserver(TimeoutObserver to) {
 89  0
         observers.removeElement(to);
 90   
     }
 91   
 
 92  4
     protected final void fireTimeoutOccured() {
 93  4
         Enumeration enum = observers.elements();
 94  4
         while (enum.hasMoreElements()) {
 95  4
             ((TimeoutObserver) enum.nextElement()).timeoutOccured(this);
 96   
         }
 97   
     }
 98   
 
 99  6
     public synchronized void start() {
 100  6
         stopped = false;
 101  6
         Thread t = new Thread(this, "WATCHDOG");
 102  6
         t.setDaemon(true);
 103  6
         t.start();
 104   
     }
 105   
 
 106  2
     public synchronized void stop() {
 107  2
         stopped = true;
 108  2
         notifyAll();
 109   
     }
 110   
 
 111  6
     public synchronized void run() {
 112  6
         final long until = System.currentTimeMillis() + timeout;
 113  6
         long now;
 114  ?
         while (!stopped && until > (now = System.currentTimeMillis())) {
 115  6
             try {
 116  6
                 wait(until - now);
 117   
             } catch (InterruptedException e) {}
 118   
         }
 119  6
         if (!stopped) {
 120  4
             fireTimeoutOccured();
 121   
         }
 122   
     }
 123   
 
 124   
 }
 125