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

Example 56 with Selector

use of java.nio.channels.Selector in project hs4j by killme2008.

the class SelectorFactory method reduce.

/**
     * Decrease <code>Selector</code> pool size
     */
private static void reduce(int size) {
    for (int i = 0; i < maxSelectors - size; i++) {
        try {
            Selector selector = selectors.pop();
            selector.close();
        } catch (IOException e) {
            logger.error("SelectorFactory.reduce", e);
        }
    }
}

Example 57 with Selector

use of java.nio.channels.Selector in project hs4j by killme2008.

the class SelectorFactory method getSelector.

/**
     * Get a exclusive <code>Selector</code>
     * 
     * @return <code>Selector</code>
     */
public static final Selector getSelector() {
    synchronized (selectors) {
        Selector s = null;
        try {
            if (selectors.size() != 0) {
                s = selectors.pop();
            }
        } catch (EmptyStackException ex) {
        }
        int attempts = 0;
        try {
            while (s == null && attempts < 2) {
                selectors.wait(timeout);
                try {
                    if (selectors.size() != 0) {
                        s = selectors.pop();
                    }
                } catch (EmptyStackException ex) {
                    break;
                }
                attempts++;
            }
        } catch (InterruptedException ex) {
        }
        return s;
    }
}

Example 58 with Selector

use of java.nio.channels.Selector in project blade by biezhi.

the class ManagedSelector method dump.

@Override
public void dump(Appendable out, String indent) throws IOException {
    out.append(String.valueOf(this)).append(" id=").append(String.valueOf(_id)).append(System.lineSeparator());
    Selector selector = _selector;
    if (selector != null && selector.isOpen()) {
        final ArrayList<Object> dump = new ArrayList<>(selector.keys().size() * 2);
        DumpKeys dumpKeys = new DumpKeys(dump);
        submit(dumpKeys);
        dumpKeys.await(5, TimeUnit.SECONDS);
        ContainerLifeCycle.dump(out, indent, dump);
    }
}

Example 59 with Selector

use of java.nio.channels.Selector in project blade by biezhi.

the class ManagedSelector method submit.

public void submit(Runnable change) {
    if (LOG.isDebugEnabled())
        LOG.debug("Queued change {} on {}", change, this);
    Selector selector = null;
    try (Locker.Lock lock = _locker.lock()) {
        _actions.offer(change);
        if (_selecting) {
            selector = _selector;
            // To avoid the extra select wakeup.
            _selecting = false;
        }
    }
    if (selector != null)
        selector.wakeup();
}

Example 60 with Selector

use of java.nio.channels.Selector in project http-kit by http-kit.

the class PerformanceBench method main.

public static void main(String[] args) throws IOException, InterruptedException {
    System.out.println("concurrency: " + concurrency + "; total requests: " + total);
    Selector selector = Selector.open();
    for (int i = 0; i < concurrency; ++i) {
        if (i % 100 == 0) {
            Thread.sleep(10);
        }
        connect(addr, selector);
    }
    start = System.currentTimeMillis();
    while (true) {
        int select = selector.select();
        D("selec return " + select);
        if (select > 0) {
            Set<SelectionKey> selectedKeys = selector.selectedKeys();
            Iterator<SelectionKey> it = selectedKeys.iterator();
            while (it.hasNext()) {
                SelectionKey key = it.next();
                if (key.isConnectable()) {
                    SocketChannel ch = (SocketChannel) key.channel();
                    try {
                        if (ch.finishConnect()) {
                            key.interestOps(SelectionKey.OP_WRITE);
                        }
                    } catch (Exception e) {
                        ch.close();
                        e.printStackTrace();
                        D(e.getMessage() + "\t" + "close and reconnect");
                        // reconnect
                        connect(addr, selector);
                    }
                } else if (key.isWritable()) {
                    doWrite(key);
                } else if (key.isReadable()) {
                    doRead(selector, key);
                }
            }
            selectedKeys.clear();
        }
    }
}