import okio.IOException

class RealConnectionPool internal constructor(
  private val taskRunner: TaskRunner,
  /**
   * The maximum number of idle connections across all addresses.
   * Connections needed to satisfy a [ConnectionPool.AddressPolicy] are not considered idle.
   */
  private val maxIdleConnections: Int,
  keepAliveDuration: Long,
  timeUnit: TimeUnit,
  internal val connectionListener: ConnectionListener,

                log.debug("Error checking connection idle time: {}", e.getMessage());
            }
        }

        // Remove at most half of the idle connections
        int toRemoveCount = Math.min(idle.size(), Math.max(1, idle.size() / 2));
        for (int i = 0; i < toRemoveCount; i++) {
            SmbTransportImpl transport = idle.get(i);
            if (connections.remove(transport)) {

    }

  /**
   * A callback to be invoked each time the dispatcher becomes idle (when the number of running
   * calls returns to zero).
   *
   * Note: The time at which a [call][Call] is considered idle is different depending on whether it
   * was run [asynchronously][Call.enqueue] or [synchronously][Call.execute]. Asynchronous calls
   * become idle after the [onResponse][Callback.onResponse] or [onFailure][Callback.onFailure]

  /** Returns the number of idle connections in the pool. */
  fun idleConnectionCount(): Int = delegate.idleConnectionCount()

  /** Returns total number of connections in the pool. */
  fun connectionCount(): Int = delegate.connectionCount()

  internal val connectionListener: ConnectionListener
    get() = delegate.connectionListener

  /** Close and remove all idle connections in the pool. */
  fun evictAll() {

  }

  @Test
  fun idleCallbackInvokedWhenIdle() {
    val idle = AtomicBoolean()
    dispatcher.idleCallback = Runnable { idle.set(true) }
    client.newCall(newRequest("http://a/1")).enqueue(callback)
    client.newCall(newRequest("http://a/2")).enqueue(callback)
    executor.finishJob("http://a/1")
    assertThat(idle.get()).isFalse()
    val ready = CountDownLatch(1)
    val proceed = CountDownLatch(1)

          block()
          return -1L
        }
      },
      delayNanos,
    )
  }

  /** Returns a latch that reaches 0 when the queue is next idle. */
  fun idleLatch(): CountDownLatch {
    taskRunner.withLock {
      // If the queue is already idle, that's easy.
      if (activeTask == null && futureTasks.isEmpty()) {
        return CountDownLatch(0)
      }

    /**
     * Update activity timestamp
     */
    public void updateActivity() {
        this.lastActivityTime = System.currentTimeMillis();
    }

    /**
     * Get idle time since last activity
     *
     * @return idle time in milliseconds
     */
    public long getIdleTime() {
        return System.currentTimeMillis() - lastActivityTime;
    }

    /**

class AddressPolicy(
  /**
   * How many concurrent calls should be possible to make at any time.
   * The pool will routinely try to pre-emptively open connections to satisfy this minimum.
   * Connections will still be closed if they idle beyond the keep-alive but will be replaced.
   */
  @JvmField val minimumConcurrentCalls: Int = 0,
  /** How long to wait to retry pre-emptive connection attempts that fail. */
  @JvmField val backoffDelayMillis: Long = 60 * 1000,

			if ts != nil {
				tot := ts.User + ts.System + ts.Idle + ts.Iowait + ts.Nice + ts.Steal
				cpuUserVal := math.Round(ts.User/tot*100*100) / 100
				updateResourceMetrics(cpuSubsystem, cpuUser, cpuUserVal, labels, false)
				cpuSystemVal := math.Round(ts.System/tot*100*100) / 100
				updateResourceMetrics(cpuSubsystem, cpuSystem, cpuSystemVal, labels, false)
				cpuIdleVal := math.Round(ts.Idle/tot*100*100) / 100

        switch (resourceType) {
        case FILE_HANDLE:
            return "Close unused file handles or increase the file handle limit";
        case CONNECTION:
            return "Close idle connections or increase the connection pool size";
        case MEMORY:
            return "Reduce buffer sizes or increase heap memory";
        case DISK_SPACE: