Examples of org.eclipse.jetty.util.thread.ScheduledExecutorScheduler

org.eclipse.jetty.util.thread.ScheduledExecutorScheduler
Implementation of {@link Scheduler} based on JDK's {@link ScheduledThreadPoolExecutor}.
While use of {@link ScheduledThreadPoolExecutor} creates futures that will not be used,it has the advantage of allowing to set a property to remove cancelled tasks from its queue even if the task did not fire, which provides a huge benefit in the performance of garbage collection in young generation.

        
         //try and use a common scheduler, fallback to own
         _scheduler =_server.getBean(Scheduler.class);
         if (_scheduler == null)
         {
             _scheduler = new ScheduledExecutorScheduler();
             _ownScheduler = true;
             _scheduler.start();
         }
  
        setScavengeInterval(getScavengeInterval());

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    {
        _server=server;
        _executor=executor!=null?executor:_server.getThreadPool();
        if (scheduler==null)
            scheduler=_server.getBean(Scheduler.class);
        _scheduler=scheduler!=null?scheduler:new ScheduledExecutorScheduler();
        if (pool==null)
            pool=_server.getBean(ByteBufferPool.class);
        _byteBufferPool = pool!=null?pool:new ArrayByteBufferPool();


        addBean(_server,false);

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        }    
      
        if (_timer == null)
        {
            //make a scheduler if none useable
            _timer=new ScheduledExecutorScheduler(toString()+"Timer",true);
            addBean(_timer,true);
        }
        else
            addBean(_timer,false);

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        if (byteBufferPool == null)
            byteBufferPool = new MappedByteBufferPool();
        addBean(byteBufferPool);


        if (scheduler == null)
            scheduler = new ScheduledExecutorScheduler(name + "-scheduler", false);
        addBean(scheduler);


        transport.setHttpClient(this);
        addBean(transport);

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        {
            setExecutor(getServer().getThreadPool());
        }
        if (scheduler == null)
        {
            setScheduler(new ScheduledExecutorScheduler());
            addBean(getScheduler());
        }
        if (bufferPool == null)
        {
            setByteBufferPool(new MappedByteBufferPool());

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        }
        addBean(bufferPool);


        if (scheduler == null)
        {
            scheduler = new ScheduledExecutorScheduler(name + "-scheduler",daemon);
        }
        addBean(scheduler);


        if (cookieStore == null)
        {

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    }


    public HTTP2Client(Executor executor)
    {
        addBean(executor);
        Scheduler scheduler = new ScheduledExecutorScheduler();
        addBean(scheduler, true);
        this.selector = new ClientSelectorManager(executor, scheduler);
        addBean(selector, true);
        this.byteBufferPool = new MappedByteBufferPool();
        addBean(byteBufferPool, true);

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    protected Scheduler startScheduler() throws ServletException
    {
        try
        {
            Scheduler result = new ScheduledExecutorScheduler();
            result.start();
            return result;
        }
        catch (Exception x)
        {
            throw new ServletException(x);

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         //try and use a common scheduler, fallback to own
         _scheduler =_server.getBean(Scheduler.class);
         if (_scheduler == null)
         {
             _scheduler = new ScheduledExecutorScheduler();
             _ownScheduler = true;
             _scheduler.start();
         }
         else if (!_scheduler.isStarted())
             throw new IllegalStateException("Shared scheduler not started");

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        // Server
        Server server = new Server(threadPool);


        // Scheduler
        server.addBean(new ScheduledExecutorScheduler());


        // HTTP Configuration
        HttpConfiguration http_config = new HttpConfiguration();
        http_config.setSecureScheme("https");
        http_config.setSecurePort(8443);

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