* Maximum number of queued tasks.
*/
readonly maxQueued?: number
+ /**
+ * Number of stolen tasks.
+ */
+ stolen: number
/**
* Number of failed tasks.
*/
/**
* Registers a listener to the exit event that will only be performed once.
*
- * @param event - `'exit'`.
+ * @param event - The `'exit'` event.
* @param handler - The exit handler.
*/
readonly once: (event: 'exit', handler: ExitHandler<this>) => void
}
+export type WorkerNodeEventCallback = (workerId: number) => void
+
/**
* Worker node interface.
*
*/
readonly info: WorkerInfo
/**
- * Message channel.
+ * Worker usage statistics.
+ */
+ usage: WorkerUsage
+ /**
+ * Message channel (worker_threads only).
*/
readonly messageChannel?: MessageChannel
/**
- * Worker usage statistics.
+ * Tasks queue back pressure size.
+ * This is the number of tasks that can be enqueued before the worker node has back pressure.
*/
- usage: WorkerUsage
+ tasksQueueBackPressureSize: number
+ /**
+ * Callback invoked when worker node tasks queue is back pressured.
+ *
+ * @param workerId - The worker id.
+ */
+ onBackPressure?: WorkerNodeEventCallback
+ /**
+ * Callback invoked when worker node tasks queue is empty.
+ *
+ * @param workerId - The worker id.
+ */
+ onEmptyQueue?: WorkerNodeEventCallback
/**
* Tasks queue size.
*
* @returns The tasks queue size.
*/
readonly enqueueTask: (task: Task<Data>) => number
+ /**
+ * Prepends a task to the tasks queue.
+ *
+ * @param task - The task to prepend.
+ * @returns The tasks queue size.
+ */
+ readonly unshiftTask: (task: Task<Data>) => number
/**
* Dequeue task.
*
* @returns The dequeued task.
*/
readonly dequeueTask: () => Task<Data> | undefined
+ /**
+ * Pops a task from the tasks queue.
+ *
+ * @returns The popped task.
+ */
+ readonly popTask: () => Task<Data> | undefined
/**
* Clears tasks queue.
*/