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ea7a90d3 | 1 | import type { IPoolWorker } from '../pool-worker' |
bdaf31cd JB |
2 | import { AbstractWorkerChoiceStrategy } from './abstract-worker-choice-strategy' |
3 | ||
4 | /** | |
737c6d97 | 5 | * Selects the less used worker. |
bdaf31cd | 6 | * |
38e795c1 JB |
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. | |
bdaf31cd | 10 | */ |
737c6d97 | 11 | export class LessUsedWorkerChoiceStrategy< |
ea7a90d3 | 12 | Worker extends IPoolWorker, |
bdaf31cd JB |
13 | Data, |
14 | Response | |
15 | > extends AbstractWorkerChoiceStrategy<Worker, Data, Response> { | |
38e795c1 | 16 | /** {@inheritDoc} */ |
a6f7f1b4 | 17 | public reset (): boolean { |
ea7a90d3 JB |
18 | return true |
19 | } | |
20 | ||
38e795c1 | 21 | /** {@inheritDoc} */ |
bdaf31cd | 22 | public choose (): Worker { |
f4ff1ce2 | 23 | let minNumberOfTasks = Infinity |
168c526f | 24 | let lessUsedWorker!: Worker |
ffcbbad8 JB |
25 | for (const value of this.pool.workers.values()) { |
26 | const worker = value.worker | |
3032893a | 27 | const tasksUsage = this.pool.getWorkerTasksUsage(worker) |
f4ff1ce2 | 28 | const workerTasks = |
3032893a | 29 | (tasksUsage?.run as number) + (tasksUsage?.running as number) |
f4ff1ce2 | 30 | if (!this.isDynamicPool && workerTasks === 0) { |
bdaf31cd | 31 | return worker |
f4ff1ce2 JB |
32 | } else if (workerTasks < minNumberOfTasks) { |
33 | minNumberOfTasks = workerTasks | |
168c526f | 34 | lessUsedWorker = worker |
bdaf31cd JB |
35 | } |
36 | } | |
168c526f | 37 | return lessUsedWorker |
bdaf31cd JB |
38 | } |
39 | } |