OPool

Simple & super fast object pool for javascript

Usage

To create a new pool you just need to provide a constructor function to the exported class. You constructor function must have a prototype function called reset, which will be called upon release.

To get a new object, just call pool.get(). To add an object to the pool call pool.release(obj);.

Typescript

import Pool from 'opool';
 
class MyClass {
  constructor() {
    MyClass.reset(this);
  }
  static reset(obj: MyClass) {
    obj.something = null;
  }
}
 
export default const pool = new Pool(MyClass);
 
// Then somewhere else...
 
const obj1 = pool.get(); // returns new MyClass
const obj2 = pool.get(); // returns new MyClass
 
pool.release(obj1); // reset() is automatically called here
 
const obj3 = pool.get(); // obj3 is now identical to obj1

Javascript (ES5)

var Pool = require('opool');
 
function MyClass() {
  MyClass.reset(this);
}
MyClass.reset = function(obj) {
  obj.something = null;
}
 
var pool = new Pool(MyClass);
 
// Then somewhere deep down...
function() {
  var obj = pool.get();
  obj.something = 'test';
 
  pool.release(obj); // You should stop using `obj` now
  // obj.reset is automatically called here
}();
 
function() {
  var obj2 = pool.get(); // This is actually the same as `obj` above.
  console.log(obj2.something); // > null
  obj2.something = 'test';
 
  pool.release(obj2);
}();