}
    for (i in readyQueues.size - 1 downTo 0) {
      val queue = readyQueues[i]
      queue.cancelAllAndDecide()
      if (queue.futureTasks.isEmpty()) {
        readyQueues.removeAt(i)
      }
    }
  }

  interface Backend {
    fun nanoTime(): Long

    fun coordinatorNotify(taskRunner: TaskRunner)

    fun coordinatorWait(
      taskRunner: TaskRunner,

  private fun startNextTask(): SerialTask? {
    taskRunner.assertThreadHoldsLock()

    val index = serialTaskQueue.indexOfFirst { it.isReady() }
    if (index == -1) return null

    val nextTask = serialTaskQueue.removeAt(index)
    currentTask = nextTask
    contextSwitchCount++
    nextTask.start()
    return nextTask
  }

  private interface SerialTask {
    /** Returns true if this task is ready to start. */

        return null;
    }

    /**
     * インデックスで指定された位置のエントリを削除します。
     *
     * @param index
     *            インデックス
     * @return インデックスで指定された位置にあったエントリの値
     */
    public V removeAt(final int index) {
        final Entry<K, V> e = removeList(index);
        final V value = e.value;
        removeMap(e.key);
        e.clear();
        return value;
    }

    @Override

      for (i in encodedQueryNamesAndValues!!.size - 2 downTo 0 step 2) {
        if (canonicalName == encodedQueryNamesAndValues!![i]) {
          encodedQueryNamesAndValues!!.removeAt(i + 1)
          encodedQueryNamesAndValues!!.removeAt(i)
          if (encodedQueryNamesAndValues!!.isEmpty()) {
            encodedQueryNamesAndValues = null
            return
          }
        }
      }
    }

        "A connection to ${connection.route().address.url} was leaked. " +
          "Did you forget to close a response body?"
      Platform.get().logCloseableLeak(message, callReference.callStackTrace)

      references.removeAt(i)

      // If this was the last allocation, the connection is eligible for immediate eviction.
      if (references.isEmpty()) {
        connection.idleAtNs = now - keepAliveDurationNs
        return 0
      }

    val connection = this.connection!!
    connection.lock.assertHeld()

    val calls = connection.calls
    val index = calls.indexOfFirst { it.get() == this@RealCall }
    check(index != -1)

    calls.removeAt(index)
    this.connection = null

    if (calls.isEmpty()) {
      connection.idleAtNs = System.nanoTime()
      if (connectionPool.connectionBecameIdle(connection)) {
        return connection.socket()

    val events = mutableListOf<Any>()

    @Synchronized fun takeEvent(): Any {
      while (events.isEmpty()) {
        wait()
      }
      return events.removeAt(0)
    }

    @Synchronized override fun onRequest(
      streamId: Int,
      requestHeaders: List<Header>,
    ): Boolean {
      assertThat(streamId).isEqualTo(2)