Examples of java.nio.channels.spi.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.

     */
    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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     */
    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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        return SelectorFactory.openWithRetryFrom(null, provider);
    }


    private void returnToPool(Selector selector) {
        if (selector.isOpen()) {
            SelectorProvider provider = selector.provider();
            List<Selector> providerPool = pool.get(provider);
            if (providerPool == null) {
                providerPool = new LinkedList<Selector>();
                pool.put(provider, providerPool);
            }

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    /**
     * @tests AbstractSelectableChannel#provider()
     */
    public void test_provider() {
        SelectorProvider provider = testChannel.provider();
        assertSame(SelectorProvider.provider(), provider);
        testChannel = new MockSelectableChannel(null);
        provider = testChannel.provider();
        assertNull(provider);
    }

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        SecurityManager originalSecuirtyManager = System.getSecurityManager();
        System.setSecurityManager(new MockSelectorProviderSecurityManager());
        try {
            // should not throw SecurityException since it has been initialized
            // in the beginning of this method.
            SelectorProvider testProvider = SelectorProvider.provider();
            assertNotNull(testProvider);
        } finally {
            System.setSecurityManager(originalSecuirtyManager);
        }
    }

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     */
    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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     */
    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();

View Full Code Here

     */
    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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    private final AtomicInteger current = new AtomicInteger();
  
  public SelectorManagers(AsyncClientPolicy policy) throws AerospikeException {
    managers = new SelectorManager[policy.asyncSelectorThreads];
    
    SelectorProvider provider = SelectorProvider.provider();
    
    for (int i = 0; i < policy.asyncSelectorThreads; i++) {
      try {
        managers[i] = new SelectorManager(policy, provider);
      }

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    private final AtomicInteger current = new AtomicInteger();
  
  public SelectorManagers(AsyncClientPolicy policy) throws AerospikeException {
    managers = new SelectorManager[policy.asyncSelectorThreads];
    
    SelectorProvider provider = SelectorProvider.provider();
    
    for (int i = 0; i < policy.asyncSelectorThreads; i++) {
      try {
        managers[i] = new SelectorManager(policy, provider);
      }

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