Now has a job queue.

This commit is contained in:
Fabian Seluska 2021-10-20 10:03:48 +02:00
parent 35a14b4362
commit e760e6bd38
2 changed files with 60 additions and 52 deletions

View File

@ -6,71 +6,79 @@ const log = initLog("Worker Setup")
let workerFarm = []
let workerReady = []
let scheduledJobs = []
function waitForThread() {
return new Promise(
(resolve, reject) => {
let interval = setInterval(
() => {
const readyIndex = workerReady.indexOf(true)
if (readyIndex !== -1) {
clearInterval(interval)
resolve(readyIndex)
}
},
50
function scheduler() {
if (scheduledJobs.length === 0) return
const readyIndex = workerReady.indexOf(true)
if (readyIndex === -1) return
workerReady[readyIndex] = false
const worker = workerFarm[readyIndex]
const job = scheduledJobs.shift()
worker.postMessage({
type: 'runScript',
script: job.script,
data: job.data,
id: job.jobID
})
const messageHandler = message => {
if (message.id === job.jobID) {
workerReady[readyIndex] = true
worker.removeListener(
'message',
messageHandler
)
return job.callback(message.result)
}
}
worker.on(
'message',
messageHandler
)
}
export function initWorkers(threads) {
for (let i = 0; i < threads; ++i) {
workerFarm.push(new Worker('./libs/utils/multithread/genericWorker.js', { env: SHARE_ENV }))
}
for (const i in workerFarm) {
const worker = workerFarm[i]
worker.postMessage({
type: 'initWorker',
name: `Worker ${parseInt(i) + 1}`
})
workerReady[i] = true
}
log(`Initialised ${threads} workers!`)
setInterval(
scheduler,
50
)
log(`Initialised the scheduler!`)
}
export function spread(script, data) {
return new Promise(
async (resolve, reject) => {
const readyIndex = await waitForThread()
workerReady[readyIndex] = false
const worker = workerFarm[readyIndex]
const jobID = randomUUID()
worker.postMessage({
type: 'runScript',
scheduledJobs.push({
script,
data,
id: jobID
})
const messageHandler = message => {
if (message.id === jobID) {
workerReady[readyIndex] = true
worker.removeListener(
'message',
messageHandler
)
resolve(message.result)
jobID,
callback: result => {
resolve(result)
}
}
worker.on(
'message',
messageHandler
)
})
}
)
}

View File

@ -5,23 +5,23 @@ import initLog from '../libs/utils/log.js'
const log = initLog("Fib. Test")
initWorkers(10)
initWorkers(3)
// const jobs = 100
// let completed = 0
// for (let i = 0; i < jobs; ++i) {
// spread(
// './fibonacci.js',
// {}
// ).then(
// result => {
// ++completed
// log(`Completed job ${completed}/${jobs} -> ${result}`)
const jobs = 10
let completed = 0
for (let i = 0; i < jobs; ++i) {
spread(
'./fibonacci.js',
{}
).then(
result => {
++completed
log(`Completed job ${completed}/${jobs} -> ${result}`)
// if (completed === jobs) process.exit(0)
// }
// )
// }
if (completed === jobs) process.exit(0)
}
)
}