`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()`

Either side can use `rb.CloseWithError(err error)` to signal an error and close the ring buffer. 
Any reads or writes will return the error on next call.

// gatherResults will collect all results on the input channel and filter results according
// to the options or to the current bucket ILM expiry rules.
// Caller should close the channel when done.
// The returned function will return the results once there is enough or input is closed,
// or the context is canceled.
func (o *listPathOptions) gatherResults(ctx context.Context, in <-chan metaCacheEntry) func() (metaCacheEntriesSorted, error) {

      deflatedBytes.writeByte(0x00)
    }

    buffer.write(deflatedBytes, deflatedBytes.size)
  }

  @Throws(IOException::class)
  override fun close() = deflaterSink.close()

  private fun Buffer.endsWith(suffix: ByteString): Boolean = rangeEquals(size - suffix.size, suffix)

			}
			defer configDumpFile.Close()
			configDump, err := io.ReadAll(configDumpFile)
			if err != nil {
				t.Errorf("error reading test data file: %v", err)
			}

			outFile, err := os.Open(fmt.Sprintf("testdata/secret/%s/output", tc.sds))
			if err != nil {
				t.Errorf("error opening test data output file: %v", err)
			}
			defer outFile.Close()
			expectedOut, err := io.ReadAll(outFile)

var globalLockGrid atomic.Pointer[grid.Manager]

// globalGridStart is a channel that will block startup of grid connections until closed.
var globalGridStart = make(chan struct{})

// globalLockGridStart is a channel that will block startup of lock grid connections until closed.
var globalLockGridStart = make(chan struct{})

func initGlobalGrid(ctx context.Context, eps EndpointServerPools) error {

  }

  @Test fun `deflate after close`() {
    val deflater = MessageDeflater(true)
    deflater.close()

    assertFailsWith<Exception> {
      deflater.deflate("Hello deflate!".encodeUtf8())
    }
  }

  @Test fun `inflate after close`() {
    val inflater = MessageInflater(false)

    inflater.close()

    assertFailsWith<Exception> {

// username.
func (l *Config) LookupUserDN(username string) (*xldap.DNSearchResult, []string, error) {
	conn, err := l.LDAP.Connect()
	if err != nil {
		return nil, nil, err
	}
	defer conn.Close()

	// Bind to the lookup user account
	if err = l.LDAP.LookupBind(conn); err != nil {
		return nil, nil, err
	}

	// Lookup user DN
	lookupRes, err := l.LDAP.LookupUsername(conn, username)
	if err != nil {

          for (int i = 2; i <= 997; i++) {
            System.out.println(i);
            Thread.sleep(10);
            sink.writeUtf8(String.format(" * %s = %s\n", i, factor(i)));
          }
          sink.close();
        } catch (IOException | InterruptedException e) {
          e.printStackTrace();
        }
      }

      private String factor(int n) {
        for (int i = 2; i < n; i++) {
          int x = n / i;

A <code>nil</code> channel is never ready for communication.
</p>

<p>
A channel may be closed with the built-in function
<a href="#Close"><code>close</code></a>.
The multi-valued assignment form of the
<a href="#Receive_operator">receive operator</a>
reports whether a received value was sent before
the channel was closed.
</p>

<p>
A single channel may be used in

	done func()
}

// CloseWithError close with supplied error the writer end.
func (w *PipeWriter) CloseWithError(err error) error {
	err = w.PipeWriter.CloseWithError(err)
	w.once.Do(func() {
		w.done()
	})
	return err
}

// PipeReader is similar to io.PipeReader with wait group
type PipeReader struct {
	*io.PipeReader
	wait func()
}

// CloseWithError close with supplied error the reader end