Java Pipe.SinkChannel方法代碼示例

import java.nio.channels.Pipe; //導入方法依賴的package包/類
public static void main(String[] args) throws Exception {
  Pipe pipe = Pipe.open();

  Pipe.SinkChannel sinkChannel = pipe.sink();
  Pipe.SourceChannel sourceChannel = pipe.source();
  String newData = "New String to write to file..." + System.currentTimeMillis();
  ByteBuffer buf = ByteBuffer.allocate(48);
  buf.clear();
  buf.put(newData.getBytes());
  buf.flip();

  ByteBuffer bufread = ByteBuffer.allocate(48);

  while (buf.hasRemaining()) {
    sinkChannel.write(buf);
    int bytesRead = sourceChannel.read(bufread);
    System.out.println(bytesRead);
  }

}
 

import java.nio.channels.Pipe; //導入方法依賴的package包/類
protected SingleInputExpect(
        final Pipe.SourceChannel source,
        final Pipe.SinkChannel sink,
        final InputStream input,
        final Charset charset,
        final Appendable echoInput,
        final Filter filter,
        final int bufferSize,
        final boolean autoFlushEcho) throws IOException {
    this.input = input;
    this.charset = charset;
    this.echoInput = echoInput;
    this.filter = filter;
    this.bufferSize = bufferSize;
    this.autoFlushEcho = autoFlushEcho;
    this.source = source;
    this.sink = sink;
    source.configureBlocking(false);
    buffer = new StringBuilder();
}
 

import java.nio.channels.Pipe; //導入方法依賴的package包/類
public static void main(String[] args){
    Pipe pipe;
    Pipe.SinkChannel sinkChannel;
    Pipe.SourceChannel sourceChannel;

    try {
        pipe = Pipe.open();
        new Thread(new ReadWork(pipe.source())).start();
        new Thread(new WriteWork(pipe.sink())).start();

    } catch (IOException e) {
        e.printStackTrace();
    }
}
 

import java.nio.channels.Pipe; //導入方法依賴的package包/類
@Test
public void testReadableByteChannel() throws Exception {
    int[] testSizes = { 0, 10, 1023, 1024, 1025, 2047, 2048, 2049 };

    for (int size : testSizes) {
        SelectorProvider sp = SelectorProvider.provider();
        Pipe p = sp.openPipe();
        Pipe.SinkChannel sink = p.sink();
        Pipe.SourceChannel source = p.source();
        sink.configureBlocking(false);

        ByteBuffer outgoingdata = ByteBuffer.allocateDirect(size + 10);
        byte[] someBytes = new byte[size + 10];
        generator.nextBytes(someBytes);
        outgoingdata.put(someBytes);
        outgoingdata.flip();

        int totalWritten = 0;
        while (totalWritten < size + 10) {
            int written = sink.write(outgoingdata);
            if (written < 0)
                throw new Exception("Write failed");
            totalWritten += written;
        }

        File f = File.createTempFile("blah"+size, null);
        f.deleteOnExit();
        RandomAccessFile raf = new RandomAccessFile(f, "rw");
        FileChannel fc = raf.getChannel();
        long oldPosition = fc.position();

        long bytesWritten = fc.transferFrom(source, 0, size);
        fc.force(true);
        if (bytesWritten != size)
            throw new RuntimeException("Transfer failed");

        if (fc.position() != oldPosition)
            throw new RuntimeException("Position changed");

        if (fc.size() != size)
            throw new RuntimeException("Unexpected sink size "+ fc.size());

        fc.close();
        sink.close();
        source.close();

        f.delete();
    }
}
 

import java.nio.channels.Pipe; //導入方法依賴的package包/類
public Pipe.SinkChannel sink()
{
  return sink;
}
 

import java.nio.channels.Pipe; //導入方法依賴的package包/類
public WriteWork(Pipe.SinkChannel sinkChannel){
    this.sinkChannel = sinkChannel;
}
 

import java.nio.channels.Pipe; //導入方法依賴的package包/類
public void testSocketIOWithTimeout() throws IOException {
  
  // first open pipe:
  Pipe pipe = Pipe.open();
  Pipe.SourceChannel source = pipe.source();
  Pipe.SinkChannel sink = pipe.sink();
  
  try {
    InputStream in = new SocketInputStream(source, TIMEOUT);
    OutputStream out = new SocketOutputStream(sink, TIMEOUT);
    
    byte[] writeBytes = TEST_STRING.getBytes();
    byte[] readBytes = new byte[writeBytes.length];
    
    out.write(writeBytes);
    doIO(null, out);
    
    in.read(readBytes);
    assertTrue(Arrays.equals(writeBytes, readBytes));
    doIO(in, null);
    
    /*
     * Verify that it handles interrupted threads properly.
     * Use a large timeout and expect the thread to return quickly.
     */
    in = new SocketInputStream(source, 0);
    Thread thread = new Thread(new ReadRunnable(in));
    thread.start();
    
    try {
      Thread.sleep(1000);
    } catch (InterruptedException ignored) {}
    
    thread.interrupt();
    
    try {
      thread.join();
    } catch (InterruptedException e) {
      throw new IOException("Unexpected InterruptedException : " + e);
    }
    
    //make sure the channels are still open
    assertTrue(source.isOpen());
    assertTrue(sink.isOpen());

    out.close();
    assertFalse(sink.isOpen());
    
    // close sink and expect -1 from source.read()
    assertEquals(-1, in.read());
    
    // make sure close() closes the underlying channel.
    in.close();
    assertFalse(source.isOpen());
    
  } finally {
    if (source != null) {
      source.close();
    }
    if (sink != null) {
      sink.close();
    }
  }
}
 

import java.nio.channels.Pipe; //導入方法依賴的package包/類
public static void main(String[] args) {

		try {
			// Creamos una instancia de Pipe
			Pipe pipe = Pipe.open();

			// Obtenemos el sink channel, el cual usamos para la escritura
			Pipe.SinkChannel sinkChannel = pipe.sink();

			String message = "Data sent through Java NIO Channels Pipe";

			ByteBuffer buffer = ByteBuffer.allocate(512);
			buffer.clear();
			buffer.put(message.getBytes());

			buffer.flip();
			
			// Escribimos el mensaje en el channel
			while (buffer.hasRemaining()) {
				sinkChannel.write(buffer);
			}
			
			// Obtenemos el source channel el cual usamos para leer
			Pipe.SourceChannel sourceChannel = pipe.source();
			buffer = ByteBuffer.allocate(512);

			// Vamos leyendo los datos y escribiendo en la consola
			while (sourceChannel.read(buffer) > 0) {
				buffer.flip();

				while (buffer.hasRemaining()) {
					System.out.print((char) buffer.get());
				}

				buffer.clear();
			}
		} catch (IOException e) {
			// Log and Handle exception
			e.printStackTrace();
		}
	}
 

import java.nio.channels.Pipe; //導入方法依賴的package包/類
public mai(Context paramContext, File paramFile, String paramString, long paramLong1, long paramLong2, Map<String, String> paramMap)
{
  if ((paramLong1 < 0L) || ((paramLong2 != -1L) && (paramLong1 > paramLong2))) {
    throw new IllegalArgumentException("Invalid stream limits");
  }
  this.f = paramLong1;
  this.d = paramLong2;
  long l1;
  if (paramFile == null)
  {
    l1 = 0L;
    this.e = l1;
    if (this.f >= this.e) {
      break label216;
    }
    this.b = new RandomAccessFile(paramFile, "r");
    this.b.seek(this.f);
  }
  for (;;)
  {
    if (paramString == null) {
      break label224;
    }
    Pipe localPipe = Pipe.open();
    this.c = Channels.newInputStream(localPipe.source());
    Pipe.SinkChannel localSinkChannel = localPipe.sink();
    this.a = ixd.a(paramContext).a(paramString, 4, paramMap, localSinkChannel, this);
    long l2 = Math.max(this.e, this.f);
    if (l2 != 0L)
    {
      new StringBuilder(41).append("Starting request at: ").append(l2);
      this.a.a(l2);
    }
    this.a.f();
    return;
    l1 = paramFile.length();
    break;
    label216:
    this.b = null;
  }
  label224:
  this.a = null;
  this.c = null;
}
 

import java.nio.channels.Pipe; //導入方法依賴的package包/類
Pipe.SinkChannel getWriteChannel() {
  return inboundSink;
}
 

import java.nio.channels.Pipe; //導入方法依賴的package包/類
public WritePipe(Pipe.SinkChannel selectable) throws IOException{
    super(selectable, null);
}
 

import java.nio.channels.Pipe; //導入方法依賴的package包/類
public PipeSinkWritableSelectableChannel(Pipe.SinkChannel wrapped) {
    this.wrapped = wrapped;
}