if (assertionsEnabled && Thread.holdsLock(this)) {
    throw AssertionError("Thread ${Thread.currentThread().name} MUST NOT hold lock on $this")
  }
}

internal inline fun Lockable.assertLockHeld() {
  if (assertionsEnabled && !Thread.holdsLock(this)) {
    throw AssertionError("Thread ${Thread.currentThread().name} MUST hold lock on $this")
  }
}

@OptIn(ExperimentalContracts::class)

        var task: Task =
          withLock {
            runCallCount++
            awaitTaskToRun()
          } ?: return

        val currentThread = Thread.currentThread()
        val oldName = currentThread.name
        try {
          while (true) {
            currentThread.name = task.name
            val delayNanos =
              logger.logElapsed(task, task.queue!!) {
                task.runOnce()
              }

        continue;
      }

      Thread currentThread = Thread.currentThread();
      String originalName = currentThread.getName();
      currentThread.setName("Crawler " + url);
      try {
        fetch(url);
      } catch (IOException e) {
        System.out.printf("XXX: %s %s%n", url, e);
      } finally {
        currentThread.setName(originalName);
      }
    }
  }

    ClassLoader oldContextLoader = Thread.currentThread().getContextClassLoader();
    try {
      Thread.currentThread().setContextClassLoader(loader);
      URL url = Resources.getResource(tempFile.getName());
      String text = Resources.toString(url, UTF_8);
      assertEquals("rud a chur ar an méar fhada" + System.lineSeparator(), text);
    } finally {
      Thread.currentThread().setContextClassLoader(oldContextLoader);
    }

    }
  }

  /** Interrupts the current thread after sleeping for the specified delay. */
  static void requestInterruptIn(long time, TimeUnit unit) {
    checkNotNull(unit);
    Thread interruptee = Thread.currentThread();
    new Thread(
            new Runnable() {
              @Override
              public void run() {
                try {
                  unit.sleep(time);

  static void restoreInterruptIfIsInterruptedException(Throwable t) {
    checkNotNull(t); // to satisfy NullPointerTester
    if (t instanceof InterruptedException) {
      currentThread().interrupt();
    }
  }

  static void interruptCurrentThread() {
    Thread.currentThread().interrupt();
  }

  static void rethrowIfErrorOtherThanStackOverflow(Throwable t) {
    checkNotNull(t);

        }

        ClassLoader oldClassLoader = Thread.currentThread().getContextClassLoader();
        try {
            Thread.currentThread().setContextClassLoader(pluginDescriptor.getClassRealm());

            return container.lookup(role, roleHint);
        } finally {
            Thread.currentThread().setContextClassLoader(oldClassLoader);
        }
    }

    @Override

          @Override
          public void run() {
            Thread.currentThread().interrupt();
          }
        });
    // Run a task that expects that it is not interrupted while it is running.
    e.execute(
        new Runnable() {
          @Override
          public void run() {
            assertThat(Thread.currentThread().isInterrupted()).isFalse();
          }
        });

    assertFalse(Thread.currentThread().isInterrupted());
    assertFalse(monitor.isOccupiedByCurrentThread());

    doEnterScenarioSetUp();

    boolean interruptedBeforeCall = Thread.currentThread().isInterrupted();
    Outcome actualOutcome = doCall();
    boolean occupiedAfterCall = monitor.isOccupiedByCurrentThread();
    boolean interruptedAfterCall = Thread.currentThread().isInterrupted();

              @Override
              public Integer call() {
                return Thread.currentThread().getStackTrace().length;
              }
            },
            directExecutor());
    settableFuture.set(null);
    assertThat(getDone(stackDepthCheck))
        .isLessThan(Thread.currentThread().getStackTrace().length + 100);
  }