Skip to content
This repository has been archived by the owner on Apr 22, 2023. It is now read-only.

5-50% speed up setTimeout() #4193

Closed
wants to merge 3 commits into from
Closed

5-50% speed up setTimeout() #4193

Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
63b3876
setTimeout speedup: do not calculate Timeout._when property
Oct 25, 2012
f53e238
add Timeout._onTimeout property in Timeout.constructor
Oct 25, 2012
d2cae24
Cache the result of Date.now() in a variable
bnoordhuis Oct 30, 2012
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Jump to
Jump to file
Failed to load files.
Diff view
Diff view
7 changes: 5 additions & 2 deletions lib/timers.js
View file
Open in desktop
Expand Up @@ -248,12 +248,15 @@ var Timeout = function(after) {
this._idleTimeout = after;
this._idlePrev = this;
this._idleNext = this;
this._when = Date.now() + after;
this._idleStart = null;
this._onTimeout = null;
};

Timeout.prototype.unref = function() {
if (!this._handle) {
var delay = this._when - Date.now();
var now = Date.now();
if (!this._idleStart) this._idleStart = now;
var delay = this._idleStart + this._idleTimeout - now;
if (delay < 0) delay = 0;
exports.unenroll(this);
this._handle = new Timer();
Expand Down