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

Example 21 with Selector

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

the class SelectorTest method test_57456.

public void test_57456() throws Exception {
    Selector selector = Selector.open();
    ServerSocketChannel ssc = ServerSocketChannel.open();
    try {
        // Connect.
        ssc.configureBlocking(false);
        ssc.socket().bind(null);
        SocketChannel sc = SocketChannel.open();
        sc.connect(ssc.socket().getLocalSocketAddress());
        sc.finishConnect();
        // Switch to non-blocking so we can use a Selector.
        sc.configureBlocking(false);
        // Have the 'server' write something.
        ssc.accept().write(ByteBuffer.allocate(128));
        // At this point, the client should be able to read or write immediately.
        // (It shouldn't be able to connect because it's already connected.)
        SelectionKey key = sc.register(selector, SelectionKey.OP_CONNECT | SelectionKey.OP_READ | SelectionKey.OP_WRITE);
        assertEquals(1, selector.select());
        assertEquals(SelectionKey.OP_READ | SelectionKey.OP_WRITE, key.readyOps());
        assertEquals(0, selector.select());
    } finally {
        selector.close();
        ssc.close();
    }
}

Example 22 with Selector

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

the class SelectorTest method testEINTR.

// http://b/6453247
// This test won't work on the host until/unless we start using libcorkscrew there.
// The runtime itself blocks SIGQUIT, so that doesn't cause poll(2) to EINTR directly.
// The EINTR is caused by the way libcorkscrew works.
public void testEINTR() throws Exception {
    Selector selector = Selector.open();
    new Thread(new Runnable() {

        @Override
        public void run() {
            try {
                Thread.sleep(2000);
                Libcore.os.kill(Libcore.os.getpid(), OsConstants.SIGQUIT);
            } catch (Exception ex) {
                fail();
            }
        }
    }).start();
    assertEquals(0, selector.select());
}

Example 23 with Selector

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

the class SocketChannelTest method test_56684.

public void test_56684() throws Exception {
    mockOs.enqueueFault("connect", ENETUNREACH);
    SocketChannel sc = SocketChannel.open();
    sc.configureBlocking(false);
    Selector selector = Selector.open();
    SelectionKey selectionKey = sc.register(selector, SelectionKey.OP_CONNECT);
    try {
        sc.connect(new InetSocketAddress(InetAddress.getByAddress(new byte[] { 0, 0, 0, 0 }), 0));
        fail();
    } catch (ConnectException ex) {
    }
    try {
        sc.finishConnect();
    } catch (ClosedChannelException expected) {
    }
}

Example 24 with Selector

use of java.nio.channels.Selector in project java-in-action by xinghalo.

the class SelectorTest method main.

public static void main(String[] args) throws IOException {
    Selector selector = Selector.open();
    SocketChannel socketChannel = null;
    // selector时，channel需要时非阻塞的
    socketChannel.configureBlocking(false);
    SelectionKey selectionKey = socketChannel.register(selector, SelectionKey.OP_READ);
    // connect, accept, read, write
    // int interestSet = SelectionKey.OP_READ | SelectionKey.OP_WRITE;
    // 检测感兴趣的操作
    int interestSet = selectionKey.interestOps();
    boolean isInterestedInAccept = (interestSet & SelectionKey.OP_ACCEPT) == SelectionKey.OP_ACCEPT;
    boolean isInterestedInConnect = (interestSet & SelectionKey.OP_CONNECT) == SelectionKey.OP_CONNECT;
    boolean isInterestedInRead = (interestSet & SelectionKey.OP_READ) == SelectionKey.OP_READ;
    boolean isInterestedInWrite = (interestSet & SelectionKey.OP_WRITE) == SelectionKey.OP_WRITE;
    // 检测准备就绪的操作
    int readySet = selectionKey.readyOps();
    // 检测什么事件就绪
    selectionKey.isAcceptable();
    selectionKey.isConnectable();
    selectionKey.isReadable();
    selectionKey.isWritable();
    // 附加对象
    selectionKey.attach("a");
    String tag = (String) selectionKey.attachment();
    Set<SelectionKey> selectedKeys = selector.selectedKeys();
    Iterator keyIterator = selectedKeys.iterator();
    while (keyIterator.hasNext()) {
        SelectionKey key = (SelectionKey) keyIterator.next();
        if (key.isAcceptable()) {
        // 
        } else if (key.isConnectable()) {
        } else if (key.isReadable()) {
        } else if (key.isWritable()) {
        }
        keyIterator.remove();
    }
}

Example 25 with Selector

use of java.nio.channels.Selector in project java-in-action by xinghalo.

the class SelectorTest2 method main.

public static void main(String[] args) throws IOException {
    Selector selector = Selector.open();
    SocketChannel channel = SocketChannel.open();
    channel.configureBlocking(false);
    // SelectionKey key = channel.register(selector, SelectionKey.OP_READ);
    while (true) {
        int readyChannels = selector.select();
        if (readyChannels == 0) {
            continue;
        }
        Set<SelectionKey> selectedKeys = selector.selectedKeys();
        Iterator keyIterator = selectedKeys.iterator();
        while (keyIterator.hasNext()) {
            SelectionKey key = (SelectionKey) keyIterator.next();
            if (key.isAcceptable()) {
            // 
            } else if (key.isConnectable()) {
            } else if (key.isReadable()) {
            } else if (key.isWritable()) {
            }
            keyIterator.remove();
        }
    }
}