Examples with Selector java.nio.channels.Selector used on opensource projects

Example 66 with Selector

use of java.nio.channels.Selector in project robovm by robovm.

the class AbstractSelectorTest method test_isOpen.

/**
     * @tests AbstractSelector#isOpen()
     */
public void test_isOpen() throws Exception {
    Selector acceptSelector = SelectorProvider.provider().openSelector();
    assertTrue(acceptSelector.isOpen());
    acceptSelector.close();
    assertFalse(acceptSelector.isOpen());
}

Example 67 with Selector

use of java.nio.channels.Selector in project robovm by robovm.

the class AbstractSelectorTest method test_register_LSelectorI_error.

/**
     * @tests AbstractSelector#register(Selector,int)
     */
public void test_register_LSelectorI_error() throws IOException {
    Selector acceptSelector = SelectorProvider.provider().openSelector();
    ServerSocketChannel ssc = ServerSocketChannel.open();
    ssc.configureBlocking(false);
    acceptSelector.close();
    assertFalse(acceptSelector.isOpen());
    try {
        ssc.register(acceptSelector, SelectionKey.OP_ACCEPT);
        fail("should throw NullPointerException");
    } catch (NullPointerException e) {
    // expected
    }
    assertFalse(ssc.isRegistered());
    acceptSelector = Selector.open();
    ssc.configureBlocking(true);
    try {
        ssc.register(acceptSelector, SelectionKey.OP_ACCEPT);
        fail("should throw IllegalBlockingModeException");
    } catch (IllegalBlockingModeException e) {
    // expected
    }
    assertFalse(ssc.isRegistered());
    ssc.configureBlocking(false);
    SelectionKey acceptKey = ssc.register(acceptSelector, SelectionKey.OP_ACCEPT);
    assertNotNull(acceptKey);
    assertTrue(acceptSelector.keys().contains(acceptKey));
    assertTrue(ssc.isRegistered());
}

Example 68 with Selector

use of java.nio.channels.Selector in project robovm by robovm.

the class SelectorTest method test_nonBlockingConnect.

public void test_nonBlockingConnect() throws IOException {
    SocketChannel channel = null;
    try {
        channel = SocketChannel.open();
        channel.configureBlocking(false);
        Selector selector = Selector.open();
        channel.register(selector, SelectionKey.OP_CONNECT);
        channel.connect(localAddress);
        channel.finishConnect();
        selector.select();
        assertEquals(0, selector.selectedKeys().size());
    } finally {
        channel.close();
    }
}

Example 69 with Selector

use of java.nio.channels.Selector in project robovm by robovm.

the class UnixSelectorTest method testSelectorAcceptAndRead.

public void testSelectorAcceptAndRead() throws Exception {
    Selector sel0 = Selector.open();
    Selector sel1 = Selector.open();
    Server server = new Server();
    SelectionKey mkey0 = server.serverChannel.register(sel0, SelectionKey.OP_ACCEPT);
    server.serverChannel.register(sel1, SelectionKey.OP_ACCEPT);
    // HUP is treating as acceptable
    assertEquals(1, sel0.select(100));
    assertEquals(true, sel0.selectedKeys().contains(mkey0));
    server.initialize();
    // after bind can not accept
    assertEquals(0, sel1.select(100));
    server.accept();
    Thread.sleep(1000);
    SocketChannel socketChannel = SocketChannel.open();
    socketChannel.configureBlocking(false);
    Selector sel2 = Selector.open();
    socketChannel.register(sel2, SelectionKey.OP_WRITE);
    boolean isConnected = socketChannel.connect(server.socket.getLocalSocketAddress());
    if (!isConnected) {
        socketChannel.finishConnect();
    }
    assertEquals(true, socketChannel.isConnected());
    server.close();
    Thread.sleep(3000);
    assertEquals(true, socketChannel.isConnected());
    assertEquals(1, sel2.select(100));
}

Example 70 with Selector

use of java.nio.channels.Selector in project netty by netty.

the class NioEventLoop method rebuildSelector0.

private void rebuildSelector0() {
    final Selector oldSelector = selector;
    final Selector newSelector;
    if (oldSelector == null) {
        return;
    }
    try {
        newSelector = openSelector();
    } catch (Exception e) {
        logger.warn("Failed to create a new Selector.", e);
        return;
    }
    // Register all channels to the new Selector.
    int nChannels = 0;
    for (SelectionKey key : oldSelector.keys()) {
        Object a = key.attachment();
        try {
            if (!key.isValid() || key.channel().keyFor(newSelector) != null) {
                continue;
            }
            int interestOps = key.interestOps();
            key.cancel();
            SelectionKey newKey = key.channel().register(newSelector, interestOps, a);
            if (a instanceof AbstractNioChannel) {
                // Update SelectionKey
                ((AbstractNioChannel) a).selectionKey = newKey;
            }
            nChannels++;
        } catch (Exception e) {
            logger.warn("Failed to re-register a Channel to the new Selector.", e);
            if (a instanceof AbstractNioChannel) {
                AbstractNioChannel ch = (AbstractNioChannel) a;
                ch.unsafe().close(ch.unsafe().voidPromise());
            } else {
                @SuppressWarnings("unchecked") NioTask<SelectableChannel> task = (NioTask<SelectableChannel>) a;
                invokeChannelUnregistered(task, key, e);
            }
        }
    }
    selector = newSelector;
    try {
        // time to close the old selector as everything else is registered to the new one
        oldSelector.close();
    } catch (Throwable t) {
        if (logger.isWarnEnabled()) {
            logger.warn("Failed to close the old Selector.", t);
        }
    }
    logger.info("Migrated " + nChannels + " channel(s) to the new Selector.");
}