X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=src%2Fpools%2Fthread%2Fdynamic.ts;h=d5be43f189f469b46ce16ef9bcdbf4720e33b593;hb=fc3e65861bc1939ae047ee1e8e91a1ce577035f4;hp=c10333158002bdb7ec16d3aec688746d42e3273f;hpb=280c2a7728fbeb53612d8bc115a295d0255dd991;p=poolifier.git diff --git a/src/pools/thread/dynamic.ts b/src/pools/thread/dynamic.ts index c1033315..d5be43f1 100644 --- a/src/pools/thread/dynamic.ts +++ b/src/pools/thread/dynamic.ts @@ -1,5 +1,5 @@ -import type { JSONValue, MessageValue } from '../../utility-types' -import type { PoolOptions } from '../abstract-pool' +import type { PoolOptions } from '../pool' +import { PoolType } from '../pool-internal' import type { ThreadWorkerWithMessageChannel } from './fixed' import { FixedThreadPool } from './fixed' @@ -9,69 +9,39 @@ import { FixedThreadPool } from './fixed' * This thread pool creates new threads when the others are busy, up to the maximum number of threads. * When the maximum number of threads is reached, an event is emitted. If you want to listen to this event, use the pool's `emitter`. * - * @template Data Type of data sent to the worker. - * @template Response Type of response of execution. - * + * @typeParam Data - Type of data sent to the worker. This can only be serializable data. + * @typeParam Response - Type of response of execution. This can only be serializable data. * @author [Alessandro Pio Ardizio](https://github.com/pioardi) * @since 0.0.1 */ export class DynamicThreadPool< - Data extends JSONValue = JSONValue, - Response extends JSONValue = JSONValue + Data = unknown, + Response = unknown > extends FixedThreadPool { /** * Constructs a new poolifier dynamic thread pool. * - * @param min Minimum number of threads which are always active. - * @param max Maximum number of threads that can be created by this pool. - * @param filename Path to an implementation of a `ThreadWorker` file, which can be relative or absolute. - * @param opts Options for this fixed thread pool. Default: `{ maxTasks: 1000 }` + * @param min - Minimum number of threads which are always active. + * @param max - Maximum number of threads that can be created by this pool. + * @param filePath - Path to an implementation of a `ThreadWorker` file, which can be relative or absolute. + * @param opts - Options for this dynamic thread pool. */ public constructor ( min: number, - public readonly max: number, - filename: string, - opts: PoolOptions = { maxTasks: 1000 } + protected readonly max: number, + filePath: string, + opts: PoolOptions = {} ) { - super(min, filename, opts) + super(min, filePath, opts) } - /** - * Choose a thread for the next task. - * - * It will first check for and return an idle thread. - * If all threads are busy, then it will try to create a new one up to the `max` thread count. - * If the max thread count is reached, the emitter will emit a `FullPool` event and it will fall back to using a round robin algorithm to distribute the load. - * - * @returns Thread worker. - */ - protected chooseWorker (): ThreadWorkerWithMessageChannel { - let worker: ThreadWorkerWithMessageChannel | undefined - for (const entry of this.tasks) { - if (entry[1] === 0) { - worker = entry[0] - break - } - } + /** {@inheritDoc} */ + public get type (): PoolType { + return PoolType.DYNAMIC + } - if (worker) { - // A worker is free, use it - return worker - } else { - if (this.workers.length === this.max) { - this.emitter.emit('FullPool') - return super.chooseWorker() - } - // All workers are busy, create a new worker - const worker = this.createAndSetupWorker() - worker.port2?.on('message', (message: MessageValue) => { - if (message.kill) { - this.sendToWorker(worker, { kill: 1 }) - void this.destroyWorker(worker) - this.removeWorker(worker) - } - }) - return worker - } + /** {@inheritDoc} */ + public get busy (): boolean { + return this.workers.size === this.max } }