node工作线程worker_threads的基本使用

import {Worker} from 'worker_threads'

const work = new Worker('./work.js') 

work.postMessage({x: 1, y: 2})

work.on('message', value => {
    console.log(value)
})

import {parentPort} from 'worker_threads'

const getSum = (x, y) => {
    return x + y  
}

parentPort.onmessage = (event) => {
    const {x, y} = event.data
    const res = getSum(x, y)
    parentPort.postMessage(res)
}

import {MessageChannel} from 'worker_threads'

const {port1, port2} = new MessageChannel()

port1.postMessage('123')

port2.onmessage = ev => {
    console.log(ev.data) 
}

import {Worker, MessageChannel} from 'worker_threads'

let work1 = new Worker('./work1.js')
let work2 = new Worker('./work2.js')

const {port1, port2} = new MessageChannel()

work1.postMessage({type: 'port'}, [port1])
work2.postMessage({type: 'port'}, [port2])

work1.postMessage({type: 'send', value: '从线程1向线程2传递信息'})
work2.postMessage({type: 'send', value: '从线程2向线程1传递信息'})

import {parentPort} from 'worker_threads'

let port1

parentPort.onmessage = (event) => {
    const {type, value} = event.data
    switch (type) {
        case 'port':
            port1 = event.ports[0]
            port1.onmessage = ev => {
                console.log(ev.data) 
            }
            break
        case 'send':
            port1.postMessage(value)
            break
        default:
            break
    }
}

import {parentPort} from "worker_threads";

let port2

parentPort.onmessage = (event) => {
    const {type, value} = event.data
    switch (type) {
        case 'port':
            port2 = event.ports[0]
            port2.onmessage = ev => {
                console.log(ev.data)
            }
            break
        case 'send':
            port2.postMessage(value)
            break
        default:
            break
    }
}