Examples with SelectorProvider java.nio.channels.spi.SelectorProvider used on opensource projects

Example 6 with SelectorProvider

use of java.nio.channels.spi.SelectorProvider in project j2objc by google.

the class InheritedChannel method createChannel.

/*
     * If standard inherited channel is connected to a socket then return a Channel
     * of the appropriate type based standard input.
     */
private static Channel createChannel() throws IOException {
    // dup the file descriptor - we do this so that for two reasons :-
    // 1. Avoids any timing issues with FileDescriptor.in being closed
    // or redirected while we create the channel.
    // 2. Allows streams based on file descriptor 0 to co-exist with
    // the channel (closing one doesn't impact the other)
    int fdVal = dup(0);
    // Examine the file descriptor - if it's not a socket then we don't
    // create a channel so we release the file descriptor.
    int st;
    st = soType0(fdVal);
    if (st != SOCK_STREAM && st != SOCK_DGRAM) {
        close0(fdVal);
        return null;
    }
    // Next we create a FileDescriptor for the dup'ed file descriptor
    // Have to use reflection and also make assumption on how FD
    // is implemented.
    Class[] paramTypes = { int.class };
    Constructor ctr = Reflect.lookupConstructor("java.io.FileDescriptor", paramTypes);
    Object[] args = { new Integer(fdVal) };
    FileDescriptor fd = (FileDescriptor) Reflect.invoke(ctr, args);
    // Now create the channel. If the socket is a streams socket then
    // we see if tthere is a peer (ie: connected). If so, then we
    // create a SocketChannel, otherwise a ServerSocketChannel.
    // If the socket is a datagram socket then create a DatagramChannel
    SelectorProvider provider = SelectorProvider.provider();
    assert provider instanceof sun.nio.ch.SelectorProviderImpl;
    Channel c;
    if (st == SOCK_STREAM) {
        InetAddress ia = peerAddress0(fdVal);
        if (ia == null) {
            c = new InheritedServerSocketChannelImpl(provider, fd);
        } else {
            int port = peerPort0(fdVal);
            assert port > 0;
            InetSocketAddress isa = new InetSocketAddress(ia, port);
            c = new InheritedSocketChannelImpl(provider, fd, isa);
        }
    } else {
        c = new InheritedDatagramChannelImpl(provider, fd);
    }
    return c;
}

Example 7 with SelectorProvider

use of java.nio.channels.spi.SelectorProvider in project baseio by generallycloud.

the class JavaEventLoop method open_selector.

@SuppressWarnings("rawtypes")
private static Selector open_selector(final SelectionKeySet keySet) throws IOException {
    final SelectorProvider provider = SelectorProvider.provider();
    final Selector selector = provider.openSelector();
    Object res = AccessController.doPrivileged(new PrivilegedAction<Object>() {

        @Override
        public Object run() {
            try {
                return Class.forName("sun.nio.ch.SelectorImpl");
            } catch (Throwable cause) {
                return cause;
            }
        }
    });
    if (res instanceof Throwable) {
        return selector;
    }
    final Class selectorImplClass = (Class) res;
    res = AccessController.doPrivileged(new PrivilegedAction<Object>() {

        @Override
        public Object run() {
            try {
                Field selectedKeysField = selectorImplClass.getDeclaredField("selectedKeys");
                Field publicSelectedKeysField = selectorImplClass.getDeclaredField("publicSelectedKeys");
                Throwable cause = Util.trySetAccessible(selectedKeysField);
                if (cause != null) {
                    return cause;
                }
                cause = Util.trySetAccessible(publicSelectedKeysField);
                if (cause != null) {
                    return cause;
                }
                selectedKeysField.set(selector, keySet);
                publicSelectedKeysField.set(selector, keySet);
                return null;
            } catch (Throwable e) {
                return e;
            }
        }
    });
    if (res instanceof Throwable) {
        return selector;
    }
    return selector;
}

Example 8 with SelectorProvider

use of java.nio.channels.spi.SelectorProvider in project robovm by robovm.

the class OldSystemTest method test_inheritedChannel.

public void test_inheritedChannel() throws IOException {
    Channel iChannel = System.inheritedChannel();
    assertNull("Incorrect value of channel", iChannel);
    SelectorProvider sp = SelectorProvider.provider();
    assertEquals("Incorrect value of channel", sp.inheritedChannel(), iChannel);
}

Example 9 with SelectorProvider

use of java.nio.channels.spi.SelectorProvider in project jdk8u_jdk by JetBrains.

the class InheritedChannel method createChannel.

/*
     * If standard inherited channel is connected to a socket then return a Channel
     * of the appropriate type based standard input.
     */
private static Channel createChannel() throws IOException {
    // dup the file descriptor - we do this so that for two reasons :-
    // 1. Avoids any timing issues with FileDescriptor.in being closed
    //    or redirected while we create the channel.
    // 2. Allows streams based on file descriptor 0 to co-exist with
    //    the channel (closing one doesn't impact the other)
    int fdVal = dup(0);
    // Examine the file descriptor - if it's not a socket then we don't
    // create a channel so we release the file descriptor.
    int st;
    st = soType0(fdVal);
    if (st != SOCK_STREAM && st != SOCK_DGRAM) {
        close0(fdVal);
        return null;
    }
    // Next we create a FileDescriptor for the dup'ed file descriptor
    // Have to use reflection and also make assumption on how FD
    // is implemented.
    Class[] paramTypes = { int.class };
    Constructor<?> ctr = Reflect.lookupConstructor("java.io.FileDescriptor", paramTypes);
    Object[] args = { new Integer(fdVal) };
    FileDescriptor fd = (FileDescriptor) Reflect.invoke(ctr, args);
    // Now create the channel. If the socket is a streams socket then
    // we see if tthere is a peer (ie: connected). If so, then we
    // create a SocketChannel, otherwise a ServerSocketChannel.
    // If the socket is a datagram socket then create a DatagramChannel
    SelectorProvider provider = SelectorProvider.provider();
    assert provider instanceof sun.nio.ch.SelectorProviderImpl;
    Channel c;
    if (st == SOCK_STREAM) {
        InetAddress ia = peerAddress0(fdVal);
        if (ia == null) {
            c = new InheritedServerSocketChannelImpl(provider, fd);
        } else {
            int port = peerPort0(fdVal);
            assert port > 0;
            InetSocketAddress isa = new InetSocketAddress(ia, port);
            c = new InheritedSocketChannelImpl(provider, fd, isa);
        }
    } else {
        c = new InheritedDatagramChannelImpl(provider, fd);
    }
    return c;
}

Example 10 with SelectorProvider

use of java.nio.channels.spi.SelectorProvider in project jdk8u_jdk by JetBrains.

the class PipeChannel method main.

public static void main(String[] args) throws Exception {
    for (int x = 0; x < 100; x++) {
        SelectorProvider sp = SelectorProvider.provider();
        Pipe p = sp.openPipe();
        Pipe.SinkChannel sink = p.sink();
        Pipe.SourceChannel source = p.source();
        ByteBuffer outgoingdata = ByteBuffer.allocateDirect(10);
        byte[] someBytes = new byte[10];
        generator.nextBytes(someBytes);
        outgoingdata.put(someBytes);
        outgoingdata.flip();
        int totalWritten = 0;
        while (totalWritten < 10) {
            int written = sink.write(outgoingdata);
            if (written < 0)
                throw new Exception("Write failed");
            totalWritten += written;
        }
        ByteBuffer incomingdata = ByteBuffer.allocateDirect(10);
        int totalRead = 0;
        do {
            int bytesRead = source.read(incomingdata);
            if (bytesRead > 0)
                totalRead += bytesRead;
        } while (totalRead < 10);
        for (int i = 0; i < 10; i++) if (outgoingdata.get(i) != incomingdata.get(i))
            throw new Exception("Pipe failed");
        sink.close();
        source.close();
    }
}