1 import { FixedThreadPool
, PoolOptions
} from
'poolifier';
3 import Utils from
'../utils/Utils';
4 import { Worker
} from
'worker_threads';
5 import WorkerAbstract from
'./WorkerAbstract';
6 import { WorkerData
} from
'../types/Worker';
7 import { WorkerUtils
} from
'./WorkerUtils';
9 export default class WorkerStaticPool
<T
> extends WorkerAbstract
{
10 private pool
: FixedThreadPool
<WorkerData
>;
13 * Create a new `WorkerStaticPool`.
16 * @param numberOfThreads
17 * @param startWorkerDelay
20 constructor(workerScript
: string, numberOfThreads
: number, startWorkerDelay
?: number, opts
?: PoolOptions
<Worker
>) {
21 super(workerScript
, startWorkerDelay
);
22 opts
.exitHandler
= opts
?.exitHandler
?? WorkerUtils
.defaultExitHandler
;
23 this.pool
= new FixedThreadPool(numberOfThreads
, this.workerScript
, opts
);
27 return this.pool
.workers
.length
;
30 get
maxElementsPerWorker(): number | null {
39 // eslint-disable-next-line @typescript-eslint/no-empty-function
40 public async start(): Promise
<void> {
41 // This is intentional
49 public async stop(): Promise
<void> {
50 return this.pool
.destroy();
59 public async addElement(elementData
: T
): Promise
<void> {
60 await this.pool
.execute(elementData
);
61 // Start worker sequentially to optimize memory at startup
62 await Utils
.sleep(this.workerStartDelay
);