Examples of SelectorProvider

java.nio.channels.spi.SelectorProvider
Provider for nio selector and selectable channel.
The provider can be got by system property or the configuration file in a jar file, if not, the system default provider will return. The main function of this class is to return the instance of implementation class of DatagramChannel, Pipe, Selector , ServerSocketChannel, and SocketChannel. All the methods of this class are multi-thread safe.

Examples of java.nio.channels.spi.SelectorProvider

import java.util.Set;


public class Listing_2_10 {


  public static void main(String[] args) {
    SelectorProvider provider = SelectorProvider.provider();
    try {
      NetworkChannel socketChannel = provider.openSocketChannel();
      SocketAddress address = new InetSocketAddress(3080);
      socketChannel = socketChannel.bind(address);


      Set<SocketOption<?>> socketOptions = socketChannel.supportedOptions();

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Examples of java.nio.channels.spi.SelectorProvider

     * @throws IOException
     */
    private synchronized SelectorInfo get(SelectableChannel channel) throws IOException {
      SelectorInfo selInfo = null;


      SelectorProvider provider = channel.provider();


      // pick the list : rarely there is more than one provider in use.
      ProviderInfo pList = providerList;
      while (pList != null && pList.provider != provider) {
        pList = pList.next;
      }
      if (pList == null) {
        // LOG.info("Creating new ProviderInfo : " + provider.toString());
        pList = new ProviderInfo();
        pList.provider = provider;
        pList.queue = new LinkedList<SelectorInfo>();
        pList.next = providerList;
        providerList = pList;
      }


      LinkedList<SelectorInfo> queue = pList.queue;


      if (queue.isEmpty()) {
        Selector selector = provider.openSelector();
        selInfo = new SelectorInfo();
        selInfo.selector = selector;
        selInfo.queue = queue;
      } else {
        selInfo = queue.removeLast();

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Examples of java.nio.channels.spi.SelectorProvider

                final Class<?> providerClazz = Class.forName("sun.nio.ch.EPollSelectorProvider");
                if (providerClazz != null) {
                    try {
                        final Method method = providerClazz.getMethod("provider");
                        if (method != null) {
                            final SelectorProvider selectorProvider = (SelectorProvider) method.invoke(null);
                            if (selectorProvider != null) {
                                result = selectorProvider.openSelector();
                            }
                        }
                    }
                    catch (final Exception e) {
                        // ignore

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Examples of java.nio.channels.spi.SelectorProvider

     */
    private synchronized SelectorInfo get(SelectableChannel channel) 
                                                         throws IOException {
      SelectorInfo selInfo = null;
      
      SelectorProvider provider = channel.provider();
      
      // pick the list : rarely there is more than one provider in use.
      ProviderInfo pList = providerList;
      while (pList != null && pList.provider != provider) {
        pList = pList.next;
      }      
      if (pList == null) {
        //LOG.info("Creating new ProviderInfo : " + provider.toString());
        pList = new ProviderInfo();
        pList.provider = provider;
        pList.queue = new LinkedList<SelectorInfo>();
        pList.next = providerList;
        providerList = pList;
      }
      
      LinkedList<SelectorInfo> queue = pList.queue;
      
      if (queue.isEmpty()) {
        Selector selector = provider.openSelector();
        selInfo = new SelectorInfo();
        selInfo.selector = selector;
        selInfo.queue = queue;
      } else {
        selInfo = queue.removeLast();

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Examples of java.nio.channels.spi.SelectorProvider

  }


  @Test(timeout = 3000)
  public void testWakeup() throws Exception {


    final SelectorProvider provider = SelectorProviderUDT.DATAGRAM;


    final Selector selector = provider.openSelector();


    final Thread thread = new Thread() {


      @Override
      public void run() {

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Examples of java.nio.channels.spi.SelectorProvider

      ServerSocketChannel channel = _ss.getChannel();


      if (channel == null)
        return null;
      
      SelectorProvider provider = channel.provider();


      if (provider != null)
        return provider.openSelector();
      else
        return null;
    } catch (Throwable e) {
      log.log(Level.WARNING, e.toString(), e);
      return null;

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Examples of java.nio.channels.spi.SelectorProvider

   * This also works with xinetd. It might work with Apple launchd.
   *
   * TODO: detect inactivity for N minutes, exist - to free resources.
   */
  public void inetdAcceptor(NioChannelCallback cstate) throws IOException {
      SelectorProvider sp=SelectorProvider.provider();


      Channel ch=sp.inheritedChannel();
      if(ch!=null ) {
          log.info("Inherited: " + ch.getClass().getName());
          // blocking mode
          ServerSocketChannel ssc=(ServerSocketChannel)ch;
          ssc.configureBlocking(false);

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Examples of java.nio.channels.spi.SelectorProvider

            .forName("sun.nio.ch.EPollSelectorProvider");
        if (providerClazz != null) {
          try {
            Method method = providerClazz.getMethod("provider");
            if (method != null) {
              SelectorProvider selectorProvider = (SelectorProvider) method
                  .invoke(null);
              if (selectorProvider != null) {
                result = selectorProvider.openSelector();
              }
            }
          } catch (Exception e) {
            // ignore
          }

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Examples of java.nio.channels.spi.SelectorProvider

     * @throws IOException
     */
    private synchronized SelectorInfo get(SelectableChannel channel) throws IOException {
      SelectorInfo selInfo = null;


      SelectorProvider provider = channel.provider();


      // pick the list : rarely there is more than one provider in use.
      ProviderInfo pList = providerList;
      while (pList != null && pList.provider != provider) {
        pList = pList.next;
      }
      if (pList == null) {
        // LOG.info("Creating new ProviderInfo : " + provider.toString());
        pList = new ProviderInfo();
        pList.provider = provider;
        pList.queue = new LinkedList<SelectorInfo>();
        pList.next = providerList;
        providerList = pList;
      }


      LinkedList<SelectorInfo> queue = pList.queue;


      if (queue.isEmpty()) {
        Selector selector = provider.openSelector();
        selInfo = new SelectorInfo();
        selInfo.selector = selector;
        selInfo.queue = queue;
      } else {
        selInfo = queue.removeLast();

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Examples of java.nio.channels.spi.SelectorProvider

  }


  @Test(timeout = 3000)
  public void testWakeup() throws Exception {


    final SelectorProvider provider = SelectorProviderUDT.DATAGRAM;


    final Selector selector = provider.openSelector();


    final Thread thread = new Thread() {


      @Override
      public void run() {

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