1 import type { IPoolWorker
} from
'../pool-worker'
2 import { AbstractWorkerChoiceStrategy
} from
'./abstract-worker-choice-strategy'
5 * Selects the less used worker.
7 * @typeParam Worker - Type of worker which manages the strategy.
8 * @typeParam Data - Type of data sent to the worker. This can only be serializable data.
9 * @typeParam Response - Type of response of execution. This can only be serializable data.
11 export class LessUsedWorkerChoiceStrategy
<
12 Worker
extends IPoolWorker
,
15 > extends AbstractWorkerChoiceStrategy
<Worker
, Data
, Response
> {
17 public reset (): boolean {
22 public choose (): Worker
{
23 let minNumberOfTasks
= Infinity
24 // A worker is always found because it picks the one with fewer tasks
25 let lessRecentlyUsedWorker
!: Worker
26 for (const value
of this.pool
.workers
.values()) {
27 const worker
= value
.worker
28 const tasksUsage
= this.pool
.getWorkerTasksUsage(worker
)
30 (tasksUsage
?.run
as number) + (tasksUsage
?.running
as number)
31 if (!this.isDynamicPool
&& workerTasks
=== 0) {
33 } else if (workerTasks
< minNumberOfTasks
) {
34 minNumberOfTasks
= workerTasks
35 lessRecentlyUsedWorker
= worker
38 return lessRecentlyUsedWorker