Commit | Line | Data |
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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'; |
a4624c96 | 7 | |
fd1fdf1b | 8 | export default class WorkerStaticPool<T> extends WorkerAbstract { |
a4624c96 JB |
9 | private pool: StaticPool; |
10 | ||
11 | /** | |
12 | * Create a new `WorkerStaticPool`. | |
13 | * | |
14 | * @param {string} workerScript | |
e71cccf3 | 15 | * @param {number} numberOfThreads |
322c9192 | 16 | * @param {number} startWorkerDelay |
a4624c96 | 17 | */ |
322c9192 JB |
18 | constructor(workerScript: string, numberOfThreads: number, startWorkerDelay?: number) { |
19 | super(workerScript, startWorkerDelay); | |
63b19acd | 20 | this.pool = StaticPool.getInstance(numberOfThreads, this.workerScript); |
a4624c96 JB |
21 | } |
22 | ||
23 | get size(): number { | |
24 | return this.pool.workers.length; | |
25 | } | |
26 | ||
27 | get maxElementsPerWorker(): number { | |
85f78bc0 | 28 | return null; |
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29 | } |
30 | ||
31 | /** | |
32 | * | |
3340259a | 33 | * @returns {Promise<void>} |
a4624c96 JB |
34 | * @public |
35 | */ | |
36 | // eslint-disable-next-line @typescript-eslint/no-empty-function | |
37 | public async start(): Promise<void> { } | |
38 | ||
ded13d97 JB |
39 | /** |
40 | * | |
3340259a | 41 | * @returns {Promise<void>} |
ded13d97 JB |
42 | * @public |
43 | */ | |
44 | public async stop(): Promise<void> { | |
45 | return this.pool.destroy(); | |
46 | } | |
47 | ||
a4624c96 JB |
48 | /** |
49 | * | |
3340259a JB |
50 | * @param elementData |
51 | * @returns {Promise<void>} | |
a4624c96 JB |
52 | * @public |
53 | */ | |
8434025b | 54 | public async addElement(elementData: T): Promise<void> { |
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55 | await this.pool.execute(elementData); |
56 | // Start worker sequentially to optimize memory at startup | |
322c9192 | 57 | await Utils.sleep(this.workerStartDelay); |
a4624c96 JB |
58 | } |
59 | } | |
60 | ||
61 | class StaticPool extends FixedThreadPool<WorkerData> { | |
62 | private static instance: StaticPool; | |
63 | ||
63b19acd JB |
64 | private constructor(numberOfThreads: number, workerScript: string, opts?: PoolOptions<Worker>) { |
65 | super(numberOfThreads, workerScript, opts); | |
a4624c96 JB |
66 | } |
67 | ||
63b19acd | 68 | public static getInstance(numberOfThreads: number, workerScript: string): StaticPool { |
a4624c96 | 69 | if (!StaticPool.instance) { |
63b19acd | 70 | StaticPool.instance = new StaticPool(numberOfThreads, workerScript, |
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71 | { |
72 | exitHandler: (code) => { | |
73 | if (code !== 0) { | |
1e924543 | 74 | console.error(`Worker stopped with exit code ${code}`); |
a4624c96 JB |
75 | } |
76 | } | |
77 | } | |
78 | ); | |
79 | } | |
80 | return StaticPool.instance; | |
81 | } | |
82 | } |