ember-multithread (Still WIP)

Dead-simple multi-threading support for Ember.js applications.

Installation

ember-multithread is an Ember-CLI addon. You can install it via:

ember install ember-multithread

Usage

Basic usage of WorkerProperty

You can create WorkerProperty in your controllers, routes or components.

import Ember from 'ember';
import {worker} from 'ember-multithread';

export default Ember.Controller.extend({
  calculatePi: worker(function(iteration) {
    let pi = 0;
    let n = 1;
    for (let i = 0; i <= iteration; i++) {
      pi = pi + (4 / n) - (4 / (n + 2));
      n = n + 4;
    }
    return pi;
  }),
  actions: {
    calculate() {
      this.get('calculatePi').perform(500000000).then(result=> {
        console.log(result);
      });
    }
  }
});

Set properties in your Ember app

This may cause race conditions if there are multiple works running simultaneously in one controller.

TODO

Synergy with ember-concurrency

TODO

Multi-threaded map(), reduce() and filter()

ember-multithread can create the number of navigator.hardwardConcurrency or 4 workers to do certain array operations.

NOTE: The worker function should not have side effects.

import Ember from 'ember';
import {worker} from 'ember-multithread';

export default Ember.Controller.extend({
  mapTestWorker: worker(function(item) {
    return item + 1;
  }),
  reduceTestWorker: worker(function(previousValue, currentValue) {
    return previousValue + currentValue;
  }),
  filterTestWorker: worker(function(item) {
    return item > 5;
  }),
  actions: {
    mapTest() {
      const array = Array(20000).fill(0);
      this.get('mapTestWorker').map(array).then(result => {
        console.log(result);
      });
    },
    reduceTest() {
      const array = Array(20000).fill(1);
      this.get('reduceTestWorker').reduce(array).then(result => {
        console.log(result);
      });
    },
    filterTest() {
      const array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14];
      this.get('filterTestWorker').filter(array).then(result => {
        console.log(result);
      });
    }
  }
});

Restriction

TODO

Special Thanks

Thanks ember-concurrency and parallel.js for the inspiration.