return bytesWritten, errLessData
	}

	return bytesWritten, derr
}

// Heal reads from readers, reconstruct shards and writes the data to the writers.
func (e Erasure) Heal(ctx context.Context, writers []io.Writer, readers []io.ReaderAt, totalLength int64, prefer []bool) (derr error) {
	if len(writers) != e.parityBlocks+e.dataBlocks {
		return errInvalidArgument
	}

	reader := newParallelReader(readers, e, 0, totalLength)

//
// [the Go memory model]: https://go.dev/ref/mem
type RWMutex struct {
	w           Mutex        // held if there are pending writers
	writerSem   uint32       // semaphore for writers to wait for completing readers
	readerSem   uint32       // semaphore for readers to wait for completing writers
	readerCount atomic.Int32 // number of pending readers
	readerWait  atomic.Int32 // number of departing readers
}

 The following are generated from this model:

   * {{{./apidocs/index.html}Java sources}} with Reader and Writers for the Xpp3 XML parser, <<<ToAPiV3()>>> and <<<ToApiV4()>>> transformers, and <<<v4>>> package
     for Merger and v4 Reader and Writers for the Xpp3 XML parser,

   * A {{{./toolchains.html}Descriptor Reference}}

            outstr.writeInt(sharedPackages.size());
            for (String str : sharedPackages) {
                outstr.writeUTF(str);
            }

            // Serialize the worker implementation classpath, this is consumed by GradleWorkerMain
            if (runAsModule || implementationModulePath == null) {
                outstr.writeInt(implementationClassPath.size());

        }

        @Override
        public void write(Encoder encoder, DaemonStopEvent value) throws Exception {
            encoder.writeLong(value.timestamp.getTime());
            encoder.writeLong(value.pid);
            encoder.writeBoolean(value.status != null);
            if (value.status != null) {
                encoder.writeByte((byte) value.status.ordinal());
            }

 The following are generated from this model:

   * {{{./apidocs/index.html}Java sources}} with Reader and Writers for the Xpp3 XML parser, <<<ToAPiV3()>>> and <<<ToApiV4()>>> transformers, and <<<v4>>> package
     for Merger and v4 Reader and Writers for the Xpp3 XML parser,

   * A {{{./maven.html}Descriptor Reference}}

    assertFalse(in.closed());
  }

  public void testWriteLines_withSpecificSeparator() throws IOException {
    sink.writeLines(ImmutableList.of("foo", "bar", "baz"), "\n");
    assertEquals("foo\nbar\nbaz\n", sink.getString());
  }

  public void testWriteLines_withDefaultSeparator() throws IOException {
    sink.writeLines(ImmutableList.of("foo", "bar", "baz"));
    String separator = System.getProperty("line.separator");

        given:
        def incompleteStream = new ByteArrayOutputStream()
        def dataOut = new DataOutputStream(new EncodedStream.EncodedOutput(incompleteStream))
        dataOut.writeInt(1) // expect one classpath entry
        dataOut.write(1234) // but the entry is not a complete UTF-8 encoded String

        System.in = new ByteArrayInputStream(incompleteStream.toByteArray())

        when:

	rLock      mutex    // protects readers, readerPass, writer
	readers    muintptr // list of pending readers
	readerPass uint32   // number of pending readers to skip readers list

	wLock  mutex    // serializes writers
	writer muintptr // pending writer waiting for completing readers

	readerCount atomic.Int32 // number of pending readers
	readerWait  atomic.Int32 // number of departing readers

            outputStream.writeLong(nextBlock.getPos());
            outputStream.writeInt(largestInNextBlock);
            outputStream.writeInt(entries.size());
            for (FreeListEntry entry : entries) {
                outputStream.writeLong(entry.pos.getPos());
                outputStream.writeInt(entry.size);
            }
        }