node/lib/freelist.js at https · reado/node · GitHub

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// This is a free list to avoid creating so many of the same object.

exports.FreeList = function(name, max, constructor) {

this.name = name;

this.constructor = constructor;

this.max = max;

this.list = [];

};

exports.FreeList.prototype.alloc = function() {

//debug("alloc " + this.name + " " + this.list.length);

return this.list.length ? this.list.shift() :

this.constructor.apply(this, arguments);

};

exports.FreeList.prototype.free = function(obj) {

//debug("free " + this.name + " " + this.list.length);

if (this.list.length < this.max) {

this.list.push(obj);

}

};