// Disable the timeout to read the first byte of a new frame.
    val b0: Int
    val timeoutBefore = source.timeout().timeoutNanos()
    source.timeout().clearTimeout()
    try {
      b0 = source.readByte() and 0xff
    } finally {
      source.timeout().timeout(timeoutBefore, TimeUnit.NANOSECONDS)
    }

    opcode = b0 and B0_MASK_OPCODE
    isFinalFrame = b0 and B0_FLAG_FIN != 0

	"runtime"
	"sync/atomic"
	"testing"
	"time"
)

const (
	id     = "1234-5678"
	source = "main.go"
)

func testSimpleWriteLock(t *testing.T, duration time.Duration) (locked bool) {
	drwm1 := NewDRWMutex(ds, "simplelock")
	ctx1, cancel1 := context.WithCancel(t.Context())
	if !drwm1.GetRLock(ctx1, cancel1, id, source, Options{Timeout: time.Second}) {
		panic("Failed to acquire read lock")
	}

permissions granted by this License. 

"Source" form shall mean the preferred form for making modifications, 
including but not limited to software source code, documentation source, and 
configuration files. 

"Object" form shall mean any form resulting from mechanical transformation 
or translation of a Source form, including but not limited to compiled 

  private final Object source;

  public ConflictingRequirementsException(
      String message, Set<Feature<?>> conflicts, Object source) {
    super(message);
    this.conflicts = conflicts;
    this.source = source;
  }

  public Set<Feature<?>> getConflicts() {
    return conflicts;
  }

  public Object getSource() {
    return source;
  }

  @Override

     * optional. If present, it contains the TLS version.
     */
    @Throws(IOException::class)
    constructor(rawSource: Source) {
      rawSource.use {
        val source = rawSource.buffer()
        val urlLine = source.readUtf8LineStrict()
        // Choice here is between failing with a correct RuntimeException
        // or mostly silently with an IOException

            org.apache.maven.artifact.Artifact source,
            Supplier<ModelSource> sourcePathProvider,
            String classifier,
            String extension) {
        super(
                source.getGroupId(),
                source.getArtifactId(),
                source.getVersionRange(),
                source.getScope(),
                extension,
                classifier,

     * @return a {@code Source} pointing to the located pom or an empty {@code Optional} if none was found by this parser
     */
    @Nonnull
    Optional<Source> locate(@Nonnull Path dir);

    /**
     * Parse the model obtained previously by a previous call to {@link #locate(Path)}.
     *
     * @param source the source to parse, never {@code null}

}

// Lock holds a write lock on dm.
//
// If the lock is already in use, the calling go routine
// blocks until the mutex is available.
func (dm *DRWMutex) Lock(id, source string) {
	isReadLock := false
	dm.lockBlocking(context.Background(), nil, id, source, isReadLock, Options{
		Timeout: drwMutexInfinite,
	})
}

// Options lock options.
type Options struct {
	Timeout       time.Duration

  fun afterSocketClosedPingFailsWebSocket() {
    server.source.close()
    client.webSocket!!.pong("Ping!".encodeUtf8())
    taskFaker.runTasks()
    client.listener.assertFailure(IOException::class.java, "source is closed")
    assertThat(client.webSocket!!.send("Hello!")).isFalse()
  }

  @Test
  fun socketClosedDuringMessageKillsWebSocket() {
    server.source.close()
    assertThat(client.webSocket!!.send("Hello!")).isTrue()

        boundary = "simple boundary",
        source = Buffer().writeUtf8(multipart),
      )

    assertThat(parts.nextPart()).isNotNull()
    assertThat(parts.nextPart()).isNull()
    assertThat(parts.nextPart()).isNull()
  }

  @Test fun `empty source`() {
    val parts =
      MultipartReader(
        boundary = "simple boundary",
        source = Buffer(),
      )