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

Example 81 with Selector

use of java.nio.channels.Selector in project jdk8u_jdk by JetBrains.

the class LotsOfCancels method runTest.

static void runTest(int initCount, int massCount, int maxSelectTime) throws Exception {
    testStartTime = System.nanoTime();
    InetSocketAddress address = new InetSocketAddress("127.0.0.1", 7359);
    // Create server channel, add it to selector and run epoll_ctl.
    log("Setting up server");
    Selector serverSelector = Selector.open();
    ServerSocketChannel server = ServerSocketChannel.open();
    server.configureBlocking(false);
    server.socket().bind(address, 5000);
    server.register(serverSelector, SelectionKey.OP_ACCEPT);
    serverSelector.selectNow();
    log("Setting up client");
    ClientThread client = new ClientThread(address);
    client.start();
    Thread.sleep(100);
    // Set up initial set of client sockets.
    log("Starting initial client connections");
    client.connectClients(initCount);
    // Wait for client connections to arrive
    Thread.sleep(500);
    // Accept all initial client sockets, add to selector and run
    // epoll_ctl.
    log("Accepting initial connections");
    List<SocketChannel> serverChannels1 = acceptAndAddAll(serverSelector, server, initCount);
    if (serverChannels1.size() != initCount) {
        throw new Exception("Accepted " + serverChannels1.size() + " instead of " + initCount);
    }
    serverSelector.selectNow();
    // Set up mass set of client sockets.
    log("Requesting mass client connections");
    client.connectClients(massCount);
    // Wait for client connections to arrive
    Thread.sleep(500);
    // Accept all mass client sockets, add to selector and do NOT
    // run epoll_ctl.
    log("Accepting mass connections");
    List<SocketChannel> serverChannels2 = acceptAndAddAll(serverSelector, server, massCount);
    if (serverChannels2.size() != massCount) {
        throw new Exception("Accepted " + serverChannels2.size() + " instead of " + massCount);
    }
    // Close initial set of sockets.
    log("Closing initial connections");
    closeAll(serverChannels1);
    // Now get the timing of select() call.
    log("Running the final select call");
    long startTime = System.nanoTime();
    serverSelector.selectNow();
    long duration = durationMillis(startTime);
    log("Init count = " + initCount + ", mass count = " + massCount + ", duration = " + duration + "ms");
    if (duration > maxSelectTime) {
        System.out.println("\n\n\n\n\nFAILURE: The final selectNow() took " + duration + "ms " + "- seems like O(N^2) bug is still here\n\n");
        System.exit(1);
    }
}

Example 82 with Selector

use of java.nio.channels.Selector in project jdk8u_jdk by JetBrains.

the class SelectWrite method main.

public static void main(String[] argv) throws Exception {
    try (ByteServer server = new ByteServer();
        SocketChannel sc = SocketChannel.open(server.address())) {
        server.acceptConnection();
        try (Selector sel = Selector.open()) {
            sc.configureBlocking(false);
            sc.register(sel, SelectionKey.OP_WRITE);
            sel.select();
            sel.selectedKeys().clear();
            if (sel.select() == 0) {
                throw new Exception("Select returned zero");
            }
        }
    }
}

Example 83 with Selector

use of java.nio.channels.Selector in project webpieces by deanhiller.

the class TestUdpIntegration method testRawDatagram.

//TODO: file a Sun bug.  We found another one.  This one only happens on linux
//not windows....
public void testRawDatagram() throws Exception {
    Selector sel = Selector.open();
    DatagramChannel peer1 = DatagramChannel.open();
    DatagramChannel peer2 = DatagramChannel.open();
    int port1 = 19858;
    int port2 = 19533;
    InetSocketAddress peer1Addr = new InetSocketAddress(port1);
    InetSocketAddress peer2Addr = new InetSocketAddress(port2);
    //NOTE: replace the above with the following and this test will fail on linux
    //InetSocketAddress peer1Addr = new InetSocketAddress(host, 0);
    //InetSocketAddress peer2Addr = new InetSocketAddress(host, 0);
    peer1.configureBlocking(false);
    peer2.configureBlocking(false);
    Object o = new Object();
    peer1.register(sel, SelectionKey.OP_READ, o);
    peer2.register(sel, SelectionKey.OP_READ, o);
    peer1.socket().bind(peer1Addr);
    peer2.socket().bind(peer2Addr);
    InetAddress localHost = InetAddress.getLocalHost();
    peer1Addr = new InetSocketAddress(localHost, port1);
    peer2Addr = new InetSocketAddress(localHost, port2);
    peer1.connect(peer2Addr);
    peer2.connect(peer1Addr);
    String msg = "Asfdsf";
    sendMessage(peer1, peer2, msg);
    peer1.disconnect();
    String msg2 = "shouldBedropped";
    writePacket(peer2, msg2);
    Thread.sleep(1000);
    peer1.connect(peer2Addr);
    sel.select(10000);
    sendMessage(peer1, peer2, msg2);
}