Threader

Bringing simple multithreading to NodeJS

Table of contents

• General
  • Setup
  • Use
• Stats
  • Multi-threading
  • [Single-thread](#single thread)
• Bindings

Setup

It will automatically detect the number of cores on startup and setup based on that.
var thread = require('threader');

Use

//Create a task
var task = thread.task(
  function(a, b){
    console.log('I am running in a separate process');
    return a+b;
  },
  function(result){
    console.log('I am running in the main process after the other process has returned ('+result+')');
  }
);

//Run the task
task(3, 5);

---

Stats

I am using crypto's pbkdf2 because it is an easy to access big calculation, I know that there is an async version.

Multithreading

var thread = require('threader');

var task = thread.task(
  function(word, i){
    var crypto = require("crypto");
    var salt = crypto.randomBytes(128).toString('base64');
    crypto.pbkdf2Sync(word, salt, 10000, 512, 'sha512');
    return i;
  },
  function(i){
    position = i;
    if (1000 <= position){
      endA = Date.now();
      console.log(endA - startA, position);
    }
  }
);

var startA = Date.now();
var endA = Date.now();
var position = 0;
for (let i=0; i<1000; i++){
  task('cat', i);
}

20562ms to complete

Single Thread

var thread = require('threader');

var startA = Date.now();
for (let i=0; i<1000; i++){
    var crypto = require("crypto");
    var salt = crypto.randomBytes(128).toString('base64');
    crypto.pbkdf2Sync('cat', salt, 10000, 512, 'sha512');
}
var endA = Date.now();
console.log('time', endA-startA);

72828ms to complete

---

Bindings

task(task[function], callback[function], isAsync[boolean])

If async is true, then the callback will not be triggered until end(result[variable]) is called. This function returns a dispatch function

dispatch()

This will parse your arguments to the predefined task.

memoryShare()

Coming Soon