X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=lib%2Ffixed.js;h=645528283d80807cbc5374b5184c64b0f4c83c9e;hb=48211d04ba8aeae7c6dca982391054269adddac2;hp=5d5d40e1be1a53c8092360432f97f77a97d57e41;hpb=50811da2e375e78179b56fe78fd7674ad2f360fd;p=poolifier.git diff --git a/lib/fixed.js b/lib/fixed.js index 5d5d40e1..64552828 100644 --- a/lib/fixed.js +++ b/lib/fixed.js @@ -2,8 +2,6 @@ const { Worker, isMainThread, MessageChannel, SHARE_ENV } = require('worker_threads') -const path = require('path') -const { generateID } = require('./util') function empty () {} /** @@ -16,17 +14,18 @@ class FixedThreadPool { /** * * @param {Number} numThreads Num of threads for this worker pool - * @param {string} a file path with implementation of @see ThreadWorker class - * @param {Object} an object with possible options for example errorHandler, onlineHandler, exitHandler + * @param {string} a file path with implementation of @see ThreadWorker class, relative path is fine + * @param {Object} an object with possible options for example errorHandler, onlineHandler. */ - constructor (numThreads, filename, opts) { + constructor (numThreads, filePath, opts) { if (!isMainThread) throw new Error('Cannot start a thread pool from a worker thread !!!') - if (!filename) throw new Error('Please specify a file with a worker implementation') + if (!filePath) throw new Error('Please specify a file with a worker implementation') this.numThreads = numThreads this.workers = [] this.nextWorker = 0 this.opts = opts || { maxTasks: 1000 } - this.filename = filename + this.filePath = filePath + this._id = 0 // threadId as key and an integer value this.tasks = new Map() for (let i = 1; i <= numThreads; i++) { @@ -38,7 +37,6 @@ class FixedThreadPool { for (const worker of this.workers) { worker.terminate() } - this.emitDestroy() } /** @@ -50,10 +48,9 @@ class FixedThreadPool { // configure worker to handle message with the specified task const worker = this._chooseWorker() this.tasks.set(worker, this.tasks.get(worker) + 1) - const id = generateID() - data._id = id + const id = ++this._id const res = this._execute(worker, id) - worker.postMessage(data) + worker.postMessage({ data: data, _id: id }) return res } @@ -81,10 +78,11 @@ class FixedThreadPool { } _newWorker () { - const worker = new Worker(path.resolve(this.filename), { env: SHARE_ENV }) + const worker = new Worker(this.filePath, { env: SHARE_ENV }) worker.on('error', this.opts.errorHandler || empty) - worker.on('exit', this.opts.exitHandler || empty) worker.on('online', this.opts.onlineHandler || empty) + // TODO handle properly when a thread exit + worker.on('exit', this.opts.exitHandler || empty) this.workers.push(worker) const { port1, port2 } = new MessageChannel() worker.postMessage({ parent: port1 }, [port1]) @@ -92,7 +90,7 @@ class FixedThreadPool { worker.port2 = port2 // we will attach a listener for every task, // when task is completed the listener will be removed but to avoid warnings we are increasing the max listeners size - worker.port2.setMaxListeners(this.opts.maxTasks) + worker.port2.setMaxListeners(this.opts.maxTasks || 1000) // init tasks map this.tasks.set(worker, 0) return worker