Examples of java.util.Timer$TimerImpl$TimerTree

java.util.Timer
Timers are used to schedule jobs for execution in a background process. A single thread is used for the scheduling and this thread has the option of being a daemon thread. By calling cancel you can terminate a timer and it's associated thread. All tasks which are scheduled to run after this point are cancelled. Tasks are executed sequentially but are subject to the delays from other tasks run methods. If a specific task takes an excessive amount of time to run it may impact the time at which subsequent tasks may run.
The Timer task does not offer any guarantees about the real-time nature of scheduling tasks as it's underlying implementation relies on the Object.wait(long) method.
Multiple threads can share a single Timer without the need for their own synchronization. @see TimerTask @see java.lang.Object#wait(long)

    // This is where we instanciate a java.util.Timer
    // for scheduling recurring checks of email accounts.
    // it is a daemon thread, that will not prolong the life of the application.
    // This means we don't need to explicitly clean it up at the end.
    // It will just die it's meaningless death.
    Timer supportEmailTimer = new Timer(true);


    // schedule a job to check support email every x minutes
    int supportInterval = 0;
    try {
      SupportHelperHome supportHome = (SupportHelperHome)CVUtility.getHomeObject("com.centraview.support.helper.SupportHelperHome", "SupportHelper");
      SupportHelper supportRemote = supportHome.create();
      supportRemote.setDataSource(dataSource);
      supportInterval = supportRemote.getSupportEmailCheckInterval();
    } catch (Exception e) { }


    if (supportInterval > 0) {
      // minutes to seconds, then seconds to miliseconds...
      Integer interval = new Integer(supportInterval * 60 * 1000);
      // 600000L = 10 minutes * 60 seconds/minute * 1000 miliseconds/second
      // delay the first check for 10 minutes after the startup.
      // Just to give things time to settle down.
      TimerTask supportEmailTask = new SupportEmailCheck(dataSource);
      supportEmailTimer.schedule(supportEmailTask, 600000L, interval.longValue());
      siteInfo.setSupportEmailTask(supportEmailTask);
    }


    // now stick the Timer into the Settings Singleton so that
    // it can be accessed by anything in the Tomcat4 webapp classloader.

View Full Code Here

    } catch(IllegalStateException ise) {
      // kill this job because the session is not
      // valid, so the user must not be logged in
      logger.debug("[run] Session is invalid, user must have logged out.  Remove the mail check timer.");
      SiteInfo siteInfo = Settings.getInstance().getSiteInfo(host);
      Timer currentTimer = siteInfo.getUserTimer(this.individualId);
      if (currentTimer != null)
      {
        logger.debug("[run] Calling cancel on the timer.");
        currentTimer.cancel();
      }
    }
  }   // end run() method

View Full Code Here

        wrkMgr = wm;
  
    }
    
    public Timer createTimer() throws UnavailableException {
        return new Timer(true);
    }

View Full Code Here

   * @param args
   * @throws Exception 
   */
  public static void main(String[] args) throws Exception {
    System.out.println(new Date(System.currentTimeMillis()) + " : Cron test wait (1 minute) ...");
    Timer timer = new Timer();
   Scheduler scheduler = new Scheduler(timer);
   //<minutes> <hours> <days of month> <months> <days of week>
   String cronDate = "* * * * *"; // all minutes.
   scheduler.scheduleEvent(new CronEvent("cron_test", cronDate), new CronTestTask());
   System.in.read();

View Full Code Here

    }
    return _instance;
  }


  private TomcatUtils() {
    _tomcatWatchdog = new Timer("Tomcat Watchdog");
    _tomcatWatchdog.schedule(_tomcatWatchdogTask, 0, 500 * 1);
  }

View Full Code Here

    
  }
  
  public void initialize(Properties info) {
    PropertiesUtils.setBeanProperties(this, info, "org.teiid.sockets"); //$NON-NLS-1$
    this.pingTimer = new Timer("SocketPing", true); //$NON-NLS-1$
    this.pingTimer.schedule(new TimerTask() {
      
      @Override
      public void run() {
        Set<Map.Entry<HostInfo, Set<SessionToken>>> sessionEntries = null;

View Full Code Here

        }
        SettingsInterface settings = Settings.getInstance();
        // re-schedule JOB because it is currently running and
        // we have changed the interval at which it executes
        TimerTask supportEmailTask = settings.getSupportEmailTask();
        Timer supportEmailTimer = settings.getSupportEmailTimer();
        // cancel the existing timer.
        if (supportEmailTask != null) {
          supportEmailTask.cancel();
        }
        if (supportEmailTimer != null) {
          supportEmailTimer.cancel();
        }
        // only re-schedule the job if the interval is greater than zero
        // a zero value means do not check support email ever
        if (formInterval.intValue() > 0) {
          // minutes to seconds, seconds to miliseconds
          Integer interval = new Integer(formInterval.intValue() * 60 * 1000);
          // then create a new Timer.
          Timer newSupportEmailTimer = new Timer(true);
          // wait a full two minutes for the next execution.
          TimerTask newSupportEmailTask = new SupportEmailCheck(dataSource);
          newSupportEmailTimer.schedule(newSupportEmailTask, 120000L, interval.longValue());
          // And store our reference.
          settings.setSupportEmailTimer(newSupportEmailTimer);
          settings.setSupportEmailTask(newSupportEmailTask);
        }
      } // end of "emailCheckInterval" setting

View Full Code Here


    /**
     * Constructs a new task engine.
     */
    private TaskEngine() {
        timer = new Timer("timer-whack", true);
        executor = Executors.newCachedThreadPool(new ThreadFactory() {


            final AtomicInteger threadNumber = new AtomicInteger(1);


            public Thread newThread(Runnable runnable) {

View Full Code Here

    final CacheProvider cacheProvider = CacheProviderRegister.getInstance()
        .getCacheProvider("memcached");
    cacheProvider.setCacheServers("192.168.16.123:11211");
    cacheProvider.setExpiryTime(1000 * 10);
    cacheProvider.put("name", "www.cnoss.org");
    final Timer timer = new Timer();
    timer.schedule(new TimerTask() {
      @Override
      public void run() {
        Object name = cacheProvider.get("name");
        if (name == null)
          timer.cancel();
        else
          System.out.println(name + "   " + (++index));
      }
    }, 0, 1000);
  }

View Full Code Here

    });


    shell.setSize(550, 350);
    shell.open();


    Timer timer = new Timer(true);
    timer.schedule(task, 0, 2000);
  }

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of java.util.Timer$TimerImpl$TimerTree

aibo.AIBO

ar.com.AmberSoft.iEvenTask.events.BackgroundEventController

bg.smoc.model.manager.ContestManager

br.com.procempa.modus.ui.visita.VisitaAtivaView

br.com.procempa.modus.ui.visita.VisitaAtivaView$ClockCellRenderer

clockradio.ClockGUI

com.alibaba.otter.canal.parse.inbound.AbstractEventParser

com.alibaba.otter.canal.parse.inbound.mysql.MysqlEventParser

com.alibaba.rocketmq.example.benchmark.Consumer

com.alibaba.rocketmq.example.benchmark.Producer

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.