perf: alternate worker selection between start and end of worker nodes

[poolifier.git] / src / pools / selection-strategies / less-used-worker-choice-strategy.ts

diff --git a/src/pools/selection-strategies/less-used-worker-choice-strategy.ts b/src/pools/selection-strategies/less-used-worker-choice-strategy.ts
index 364c54a1d3b5d6d0a5a1c853221a247c15cdd1fa..e3c395f477e4adb1d8a042ca71317c84111aae60 100644 (file)
--- a/src/pools/selection-strategies/less-used-worker-choice-strategy.ts
+++ b/src/pools/selection-strategies/less-used-worker-choice-strategy.ts
@@ -1,21 +1,35 @@
-import type { IPoolWorker } from '../pool-worker'
+import { DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS } from '../../utils'
+import type { IPool } from '../pool'
+import type { IWorker } from '../worker'
 import { AbstractWorkerChoiceStrategy } from './abstract-worker-choice-strategy'
-import type { IWorkerChoiceStrategy } from './selection-strategies-types'
+import type {
+  IWorkerChoiceStrategy,
+  WorkerChoiceStrategyOptions
+} from './selection-strategies-types'
 
 /**
  * Selects the less used worker.
  *
  * @typeParam Worker - Type of worker which manages the strategy.
  * @typeParam Data - Type of data sent to the worker. This can only be serializable data.
- * @typeParam Response - Type of response of execution. This can only be serializable data.
+ * @typeParam Response - Type of execution response. This can only be serializable data.
  */
 export class LessUsedWorkerChoiceStrategy<
-    Worker extends IPoolWorker,
+    Worker extends IWorker,
     Data = unknown,
     Response = unknown
   >
   extends AbstractWorkerChoiceStrategy<Worker, Data, Response>
   implements IWorkerChoiceStrategy {
+  /** @inheritDoc */
+  public constructor (
+    pool: IPool<Worker, Data, Response>,
+    opts: WorkerChoiceStrategyOptions = DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS
+  ) {
+    super(pool, opts)
+    this.checkOptions(this.opts)
+  }
+
   /** @inheritDoc */
   public reset (): boolean {
     return true
@@ -23,27 +37,27 @@ export class LessUsedWorkerChoiceStrategy<
 
   /** @inheritDoc */
   public choose (): number {
-    const freeWorkerKey = this.pool.findFreeWorkerKey()
-    if (freeWorkerKey !== -1) {
-      return freeWorkerKey
+    const freeWorkerNodeKey = this.findFreeWorkerNodeKey()
+    if (freeWorkerNodeKey !== -1) {
+      return freeWorkerNodeKey
     }
     let minNumberOfTasks = Infinity
-    let lessUsedWorkerKey!: number
-    for (const [index, workerItem] of this.pool.workers.entries()) {
-      const tasksUsage = workerItem.tasksUsage
+    let lessUsedWorkerNodeKey!: number
+    for (const [index, workerNode] of this.pool.workerNodes.entries()) {
+      const tasksUsage = workerNode.tasksUsage
       const workerTasks = tasksUsage.run + tasksUsage.running
       if (workerTasks === 0) {
         return index
       } else if (workerTasks < minNumberOfTasks) {
         minNumberOfTasks = workerTasks
-        lessUsedWorkerKey = index
+        lessUsedWorkerNodeKey = index
       }
     }
-    return lessUsedWorkerKey
+    return lessUsedWorkerNodeKey
   }
 
   /** @inheritDoc */
-  public remove (workerKey: number): boolean {
+  public remove (workerNodeKey: number): boolean {
     return true
   }
 }