X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=src%2Fpools%2Fworker-node.ts;h=68c8cab2ef97070ccea235dfd391ed5479978120;hb=f083bd34985d16051031c1ed0c713c5aff86f464;hp=f9b4016c29b078143d6f56d9acfcaf24b06e688d;hpb=a9780ad2992ef19ef824da2d796433fc7f193ec8;p=poolifier.git

diff --git a/src/pools/worker-node.ts b/src/pools/worker-node.ts
index f9b4016c..68c8cab2 100644
--- a/src/pools/worker-node.ts
+++ b/src/pools/worker-node.ts
@@ -13,6 +13,7 @@ import { Deque } from '../deque'
 import {
   type IWorker,
   type IWorkerNode,
+  type StrategyData,
   type WorkerInfo,
   type WorkerNodeEventCallback,
   type WorkerType,
@@ -35,6 +36,8 @@ implements IWorkerNode<Worker, Data> {
   /** @inheritdoc */
   public usage: WorkerUsage
   /** @inheritdoc */
+  public strategyData?: StrategyData
+  /** @inheritdoc */
   public messageChannel?: MessageChannel
   /** @inheritdoc */
   public tasksQueueBackPressureSize: number
@@ -43,6 +46,7 @@ implements IWorkerNode<Worker, Data> {
   /** @inheritdoc */
   public onEmptyQueue?: WorkerNodeEventCallback
   private readonly tasksQueue: Deque<Task<Data>>
+  private onBackPressureStarted: boolean
   private onEmptyQueueCount: number
   private readonly taskFunctionsUsage: Map<string, WorkerUsage>
 
@@ -53,19 +57,7 @@ implements IWorkerNode<Worker, Data> {
    * @param tasksQueueBackPressureSize - The tasks queue back pressure size.
    */
   constructor (worker: Worker, tasksQueueBackPressureSize: number) {
-    if (worker == null) {
-      throw new TypeError('Cannot construct a worker node without a worker')
-    }
-    if (tasksQueueBackPressureSize == null) {
-      throw new TypeError(
-        'Cannot construct a worker node without a tasks queue back pressure size'
-      )
-    }
-    if (!Number.isSafeInteger(tasksQueueBackPressureSize)) {
-      throw new TypeError(
-        'Cannot construct a worker node with a tasks queue back pressure size that is not an integer'
-      )
-    }
+    this.checkWorkerNodeArguments(worker, tasksQueueBackPressureSize)
     this.worker = worker
     this.info = this.initWorkerInfo(worker)
     this.usage = this.initWorkerUsage()
@@ -74,6 +66,7 @@ implements IWorkerNode<Worker, Data> {
     }
     this.tasksQueueBackPressureSize = tasksQueueBackPressureSize
     this.tasksQueue = new Deque<Task<Data>>()
+    this.onBackPressureStarted = false
     this.onEmptyQueueCount = 0
     this.taskFunctionsUsage = new Map<string, WorkerUsage>()
   }
@@ -86,8 +79,14 @@ implements IWorkerNode<Worker, Data> {
   /** @inheritdoc */
   public enqueueTask (task: Task<Data>): number {
     const tasksQueueSize = this.tasksQueue.push(task)
-    if (this.onBackPressure != null && this.hasBackPressure()) {
+    if (
+      this.onBackPressure != null &&
+      this.hasBackPressure() &&
+      !this.onBackPressureStarted
+    ) {
+      this.onBackPressureStarted = true
       this.onBackPressure(this.info.id as number)
+      this.onBackPressureStarted = false
     }
     return tasksQueueSize
   }
@@ -95,8 +94,14 @@ implements IWorkerNode<Worker, Data> {
   /** @inheritdoc */
   public unshiftTask (task: Task<Data>): number {
     const tasksQueueSize = this.tasksQueue.unshift(task)
-    if (this.onBackPressure != null && this.hasBackPressure()) {
+    if (
+      this.onBackPressure != null &&
+      this.hasBackPressure() &&
+      !this.onBackPressureStarted
+    ) {
+      this.onBackPressureStarted = true
       this.onBackPressure(this.info.id as number)
+      this.onBackPressureStarted = false
     }
     return tasksQueueSize
   }
@@ -104,7 +109,11 @@ implements IWorkerNode<Worker, Data> {
   /** @inheritdoc */
   public dequeueTask (): Task<Data> | undefined {
     const task = this.tasksQueue.shift()
-    if (this.onEmptyQueue != null && this.tasksQueue.size === 0) {
+    if (
+      this.onEmptyQueue != null &&
+      this.tasksQueue.size === 0 &&
+      this.onEmptyQueueCount === 0
+    ) {
       this.startOnEmptyQueue().catch(EMPTY_FUNCTION)
     }
     return task
@@ -113,7 +122,11 @@ implements IWorkerNode<Worker, Data> {
   /** @inheritdoc */
   public popTask (): Task<Data> | undefined {
     const task = this.tasksQueue.pop()
-    if (this.onEmptyQueue != null && this.tasksQueue.size === 0) {
+    if (
+      this.onEmptyQueue != null &&
+      this.tasksQueue.size === 0 &&
+      this.onEmptyQueueCount === 0
+    ) {
       this.startOnEmptyQueue().catch(EMPTY_FUNCTION)
     }
     return task
@@ -178,8 +191,8 @@ implements IWorkerNode<Worker, Data> {
       this.onEmptyQueueCount = 0
       return
     }
-    (this.onEmptyQueue as WorkerNodeEventCallback)(this.info.id as number)
     ++this.onEmptyQueueCount
+    this.onEmptyQueue?.(this.info.id as number)
     await sleep(exponentialDelay(this.onEmptyQueueCount))
     await this.startOnEmptyQueue()
   }
@@ -270,4 +283,28 @@ implements IWorkerNode<Worker, Data> {
       }
     }
   }
+
+  private checkWorkerNodeArguments (
+    worker: Worker,
+    tasksQueueBackPressureSize: number
+  ): void {
+    if (worker == null) {
+      throw new TypeError('Cannot construct a worker node without a worker')
+    }
+    if (tasksQueueBackPressureSize == null) {
+      throw new TypeError(
+        'Cannot construct a worker node without a tasks queue back pressure size'
+      )
+    }
+    if (!Number.isSafeInteger(tasksQueueBackPressureSize)) {
+      throw new TypeError(
+        'Cannot construct a worker node with a tasks queue back pressure size that is not an integer'
+      )
+    }
+    if (tasksQueueBackPressureSize <= 0) {
+      throw new RangeError(
+        'Cannot construct a worker node with a tasks queue back pressure size that is not a positive integer'
+      )
+    }
+  }
 }