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c32882b0 | 1 | import { FixedThreadPool, PoolOptions } from 'poolifier'; |
a4624c96 | 2 | |
a4624c96 | 3 | import Utils from '../utils/Utils'; |
c32882b0 | 4 | import { Worker } from 'worker_threads'; |
fd1fdf1b | 5 | import WorkerAbstract from './WorkerAbstract'; |
a4624c96 | 6 | import { WorkerData } from '../types/Worker'; |
7874b0b1 | 7 | import { WorkerUtils } from './WorkerUtils'; |
a4624c96 | 8 | |
fd1fdf1b | 9 | export default class WorkerStaticPool<T> extends WorkerAbstract { |
8df3f0a9 | 10 | private pool: FixedThreadPool<WorkerData>; |
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11 | |
12 | /** | |
13 | * Create a new `WorkerStaticPool`. | |
14 | * | |
81797102 JB |
15 | * @param workerScript |
16 | * @param numberOfThreads | |
17 | * @param startWorkerDelay | |
18 | * @param opts | |
19 | * @param messageListenerCallback | |
a4624c96 | 20 | */ |
81797102 JB |
21 | constructor(workerScript: string, numberOfThreads: number, startWorkerDelay?: number, opts?: PoolOptions<Worker>, |
22 | messageListenerCallback: (message: any) => void = () => { /* This is intentional */ }) { | |
23 | super(workerScript, startWorkerDelay, messageListenerCallback); | |
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24 | opts.exitHandler = opts?.exitHandler ?? WorkerUtils.defaultExitHandler; |
25 | this.pool = new FixedThreadPool(numberOfThreads, this.workerScript, opts); | |
a4624c96 JB |
26 | } |
27 | ||
28 | get size(): number { | |
29 | return this.pool.workers.length; | |
30 | } | |
31 | ||
6e0964c8 | 32 | get maxElementsPerWorker(): number | null { |
85f78bc0 | 33 | return null; |
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34 | } |
35 | ||
36 | /** | |
37 | * | |
81797102 | 38 | * @returns |
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39 | * @public |
40 | */ | |
41 | // eslint-disable-next-line @typescript-eslint/no-empty-function | |
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42 | public async start(): Promise<void> { |
43 | // This is intentional | |
44 | } | |
a4624c96 | 45 | |
ded13d97 JB |
46 | /** |
47 | * | |
81797102 | 48 | * @returns |
ded13d97 JB |
49 | * @public |
50 | */ | |
51 | public async stop(): Promise<void> { | |
52 | return this.pool.destroy(); | |
53 | } | |
54 | ||
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55 | /** |
56 | * | |
81797102 JB |
57 | * @param elementData |
58 | * @returns | |
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59 | * @public |
60 | */ | |
8434025b | 61 | public async addElement(elementData: T): Promise<void> { |
a4624c96 JB |
62 | await this.pool.execute(elementData); |
63 | // Start worker sequentially to optimize memory at startup | |
322c9192 | 64 | await Utils.sleep(this.workerStartDelay); |
a4624c96 JB |
65 | } |
66 | } |