X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;ds=sidebyside;f=src%2Fpools%2Fworker.ts;h=7a8c59e7730eba9be39ae972f94022a8a65a14ce;hb=9fe8fd698590c2494dc6793cfd8c08026fe88a31;hp=e6dd0fae91cd7b0cfd29b14ba828b89d131854d0;hpb=4445abb25ec4c9d80985ca93c65762a6c892a852;p=poolifier.git

diff --git a/src/pools/worker.ts b/src/pools/worker.ts
index e6dd0fae..7a8c59e7 100644
--- a/src/pools/worker.ts
+++ b/src/pools/worker.ts
@@ -96,6 +96,10 @@ export interface TaskStatistics {
    * Maximum number of queued tasks.
    */
   readonly maxQueued?: number
+  /**
+   * Number of stolen tasks.
+   */
+  stolen: number
   /**
    * Number of failed tasks.
    */
@@ -189,12 +193,15 @@ export interface IWorker {
   /**
    * 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 EmptyQueueCallback = (workerId: number) => void
+export type BackPressureCallback = EmptyQueueCallback
+
 /**
  * Worker node interface.
  *
@@ -211,19 +218,31 @@ export interface IWorkerNode<Worker extends IWorker, Data = unknown> {
    * Worker info.
    */
   readonly info: WorkerInfo
-  /**
-   * Message channel (worker_threads only).
-   */
-  readonly messageChannel?: MessageChannel
   /**
    * Worker usage statistics.
    */
   usage: WorkerUsage
+  /**
+   * Message channel (worker_threads only).
+   */
+  readonly messageChannel?: MessageChannel
   /**
    * Tasks queue back pressure size.
    * This is the number of tasks that can be enqueued before the worker node has back pressure.
    */
   tasksQueueBackPressureSize: number
+  /**
+   * Callback invoked when worker node tasks queue is back pressured.
+   *
+   * @param workerId - The worker id.
+   */
+  onBackPressure?: EmptyQueueCallback
+  /**
+   * Callback invoked when worker node tasks queue is empty.
+   *
+   * @param workerId - The worker id.
+   */
+  onEmptyQueue?: BackPressureCallback
   /**
    * Tasks queue size.
    *
@@ -237,12 +256,25 @@ export interface IWorkerNode<Worker extends IWorker, Data = unknown> {
    * @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.
    */