import type { IPoolWorker } from '../pool-worker'
import { AbstractWorkerChoiceStrategy } from './abstract-worker-choice-strategy'
+import type { IWorkerChoiceStrategy } from './selection-strategies-types'
/**
* Selects the less used worker.
* @typeParam Response - Type of response of execution. This can only be serializable data.
*/
export class LessUsedWorkerChoiceStrategy<
- Worker extends IPoolWorker,
- Data,
- Response
-> extends AbstractWorkerChoiceStrategy<Worker, Data, Response> {
+ Worker extends IPoolWorker,
+ Data,
+ Response
+ >
+ extends AbstractWorkerChoiceStrategy<Worker, Data, Response>
+ implements IWorkerChoiceStrategy {
/** {@inheritDoc} */
public reset (): boolean {
return true
}
/** {@inheritDoc} */
- public choose (): Worker {
+ public choose (): number {
+ const freeWorkerKey = this.pool.findFreeWorkerKey()
+ if (!this.isDynamicPool && freeWorkerKey !== -1) {
+ return freeWorkerKey
+ }
let minNumberOfTasks = Infinity
- let lessUsedWorker!: Worker
- for (const value of this.pool.workers.values()) {
- const worker = value.worker
- const tasksUsage = this.pool.getWorkerTasksUsage(worker)
- const workerTasks =
- (tasksUsage?.run as number) + (tasksUsage?.running as number)
- if (!this.isDynamicPool && workerTasks === 0) {
- return worker
+ let lessUsedWorkerKey!: number
+ for (const [index, workerItem] of this.pool.workers.entries()) {
+ const tasksUsage = workerItem.tasksUsage
+ const workerTasks = tasksUsage?.run + tasksUsage?.running
+ if (workerTasks === 0) {
+ return index
} else if (workerTasks < minNumberOfTasks) {
minNumberOfTasks = workerTasks
- lessUsedWorker = worker
+ lessUsedWorkerKey = index
}
}
- return lessUsedWorker
+ return lessUsedWorkerKey
+ }
+
+ /** {@inheritDoc} */
+ public remove (workerKey: number): boolean {
+ return true
}
}