examples/javascript/fixedExample.js

   1 'use strict'
   2 const {
   3   FixedThreadPool,
   4   PoolEvents,
   5   availableParallelism
   6 } = require('poolifier')
   7
   8 const pool = new FixedThreadPool(availableParallelism(), './yourWorker.js', {
   9   errorHandler: e => console.error(e),
  10   onlineHandler: () => console.info('worker is online')
  11 })
  12 let poolReady = 0
  13 let poolBusy = 0
  14 pool.emitter?.on(PoolEvents.ready, () => poolReady++)
  15 pool.emitter?.on(PoolEvents.busy, () => poolBusy++)
  16
  17 let resolved = 0
  18 const start = performance.now()
  19 const iterations = 1000
  20 for (let i = 1; i <= iterations; i++) {
  21   pool
  22     .execute()
  23     .then(() => {
  24       resolved++
  25       if (resolved === iterations) {
  26         console.info(
  27           `Time taken is ${(performance.now() - start).toFixed(2)}ms`
  28         )
  29         console.info(`The pool was ready for ${poolReady} times`)
  30         console.info(`The pool was busy for ${poolBusy} times`)
  31         return pool.destroy()
  32       }
  33       return undefined
  34     })
  35     .catch(err => console.error(err))
  36 }