}
	for i := 0; i < chunks; i++ {
		_, err := f.Write(chunk)
		if err != nil {
			t.Fatal("write chunk:", err)
		}
	}
	if frag := int(size % chunkSize); frag > 0 {
		_, err := f.Write(chunk[:frag])
		if err != nil {
			t.Fatal("write chunk:", err)
		}
	}
	end := []byte("END\n")
	_, err = f.Write(end)
	if err != nil {
		t.Fatal("write end:", err)
	}
	if err := w.Close(); err != nil {

		runtime.GOMAXPROCS(gomaxprocs)
		// Number of active readers + 10000 * number of active writers.
		var activity int32
		cdone := make(chan bool)
		go writer(resource, numIterations, &activity, cdone)
		var i int
		for i = 0; i < numReaders/2; i++ {
			go reader(resource, numIterations, &activity, cdone)
		}
		go writer(resource, numIterations, &activity, cdone)
		for ; i < numReaders; i++ {

  @Override
  void write(int b);

  @Override
  void write(byte b[]);

  @Override
  void write(byte b[], int off, int len);

  @Override
  void writeBoolean(boolean v);

  @Override
  void writeByte(int v);

  @Override
  void writeShort(int v);

  @Override
  void writeChar(int v);

  @Override
  void writeInt(int v);

  @Override
  void writeLong(long v);

  /**
   * Returns the number of bytes that will be written to sink in a call to [writeTo],
   * or -1 if that count is unknown.
   */
  @Throws(IOException::class)
  open fun contentLength(): Long = commonContentLength()

  /** Writes the content of this request to [sink]. */
  @Throws(IOException::class)
  abstract fun writeTo(sink: BufferedSink)

  /**

			writeRng.Read(buf)
			// Write
			n, err := rb.Write(buf[:writeRng.Intn(len(buf))])
			if err != nil {
				t.Fatalf("write failed: %v", err)
			}
			wroteBytes += n
			wrote.Write(buf[:n])
			debugln("WRITE 1\t", n, wroteBytes)

			// WriteString
			n, err = rb.WriteString(string(buf[:writeRng.Intn(len(buf))]))
			if err != nil {
				t.Fatalf("write failed: %v", err)
			}
			wroteBytes += n

				switch w := writers[j].(type) {
				case *wholeBitrotWriter:
					w.disk = badDisk{nil}
				case *streamingBitrotWriter:
					w.closeWithErr(errFaultyDisk)
				}
			}
			if test.offDisks > 0 {
				writers[0] = nil
			}
			n, err = erasure.Encode(context.Background(), bytes.NewReader(data[test.offset:]), writers, buffer, erasure.dataBlocks+1)
			closeBitrotWriters(writers)

	}
	return n, err
}

// writeTo writes the content of the current file to w.
// The bytes written matches the number of remaining bytes in the current file.
//
// If the current file is sparse and w is an io.WriteSeeker,
// then writeTo uses Seek to skip past holes defined in Header.SparseHoles,
// assuming that skipped regions are filled with NULs.
// This always writes the last byte to ensure w is the right size.
//

Regular Reads will block until data is available, but not wait for a full buffer. 
Writes will block until there is space available and writes bigger than the buffer will wait for reads to make space.

`TryRead` and `TryWrite` are still available for non-blocking reads and writes.

To signify the end of the stream, close the ring buffer from the writer side with `rb.CloseWriter()`

func (z BatchJobRetry) EncodeMsg(en *msgp.Writer) (err error) {
	// map header, size 2
	// write "Attempts"
	err = en.Append(0x82, 0xa8, 0x41, 0x74, 0x74, 0x65, 0x6d, 0x70, 0x74, 0x73)
	if err != nil {
		return
	}
	err = en.WriteInt(z.Attempts)
	if err != nil {
		err = msgp.WrapError(err, "Attempts")
		return
	}
	// write "Delay"
	err = en.Append(0xa5, 0x44, 0x65, 0x6c, 0x61, 0x79)

     * to the <code>OutputStream</code> associated with this Named
     * Pipe instance although this is not a requirement (e.g. a
     * read-only named pipe would write data to this stream on
     * connection). Reading from this stream may block. Therefore it
     * may be necessary that an addition thread be used to read and
     * write to a Named Pipe.
     */