Merge dependabot/npm_and_yarn/examples/typescript/http-client-pool/poolifier-2.6...

[poolifier.git] / src / pools / worker-node.ts

diff --git a/src/pools/worker-node.ts b/src/pools/worker-node.ts
index 359dc26c1c3649380572c7d6609961b534225863..116fb8448d8435ecb98c5573bb781f258026e589 100644 (file)
--- a/src/pools/worker-node.ts
+++ b/src/pools/worker-node.ts
@@ -1,7 +1,7 @@
 import { MessageChannel } from 'node:worker_threads'
 import { CircularArray } from '../circular-array'
 import type { Task } from '../utility-types'
-import { DEFAULT_TASK_NAME } from '../utils'
+import { DEFAULT_TASK_NAME, once } from '../utils'
 import { Deque } from '../deque'
 import {
   type IWorker,
@@ -32,6 +32,8 @@ implements IWorkerNode<Worker, Data> {
   public tasksQueueBackPressureSize: number
   /** @inheritdoc */
   public onBackPressure?: (workerId: number) => void
+  /** @inheritdoc */
+  public onEmptyQueue?: (workerId: number) => void
   private readonly taskFunctionsUsage: Map<string, WorkerUsage>
   private readonly tasksQueue: Deque<Task<Data>>
 
@@ -81,20 +83,11 @@ implements IWorkerNode<Worker, Data> {
     return this.tasksQueue.size
   }
 
-  /**
-   * Tasks queue maximum size.
-   *
-   * @returns The tasks queue maximum size.
-   */
-  private tasksQueueMaxSize (): number {
-    return this.tasksQueue.maxSize
-  }
-
   /** @inheritdoc */
   public enqueueTask (task: Task<Data>): number {
     const tasksQueueSize = this.tasksQueue.push(task)
     if (this.onBackPressure != null && this.hasBackPressure()) {
-      this.once(this.onBackPressure)(this.info.id as number)
+      once(this.onBackPressure, this)(this.info.id as number)
     }
     return tasksQueueSize
   }
@@ -103,19 +96,27 @@ implements IWorkerNode<Worker, Data> {
   public unshiftTask (task: Task<Data>): number {
     const tasksQueueSize = this.tasksQueue.unshift(task)
     if (this.onBackPressure != null && this.hasBackPressure()) {
-      this.once(this.onBackPressure)(this.info.id as number)
+      once(this.onBackPressure, this)(this.info.id as number)
     }
     return tasksQueueSize
   }
 
   /** @inheritdoc */
   public dequeueTask (): Task<Data> | undefined {
-    return this.tasksQueue.shift()
+    const task = this.tasksQueue.shift()
+    if (this.onEmptyQueue != null && this.tasksQueue.size === 0) {
+      once(this.onEmptyQueue, this)(this.info.id as number)
+    }
+    return task
   }
 
   /** @inheritdoc */
   public popTask (): Task<Data> | undefined {
-    return this.tasksQueue.pop()
+    const task = this.tasksQueue.pop()
+    if (this.onEmptyQueue != null && this.tasksQueue.size === 0) {
+      once(this.onEmptyQueue, this)(this.info.id as number)
+    }
+    return task
   }
 
   /** @inheritdoc */
@@ -180,10 +181,10 @@ implements IWorkerNode<Worker, Data> {
 
   private initWorkerUsage (): WorkerUsage {
     const getTasksQueueSize = (): number => {
-      return this.tasksQueueSize()
+      return this.tasksQueue.size
     }
     const getTasksQueueMaxSize = (): number => {
-      return this.tasksQueueMaxSize()
+      return this.tasksQueue.maxSize
     }
     return {
       tasks: {
@@ -271,28 +272,4 @@ implements IWorkerNode<Worker, Data> {
       return worker.id
     }
   }
-
-  /**
-   * Executes a function once at a time.
-   *
-   * @param fn - The function to execute.
-   * @param context - The context to bind the function to.
-   * @returns The function to execute.
-   */
-  private once (
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any
-    fn: (...args: any[]) => void,
-    context = this
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  ): (...args: any[]) => void {
-    let called = false
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any
-    return function (...args: any[]): void {
-      if (!called) {
-        called = true
-        fn.apply(context, args)
-        called = false
-      }
-    }
-  }
 }