daohualiuxiang
/
node
mirror of https://github.com/nodejs/node.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Optimize for few args in EventEmitter.emit

pull/22966/head
Ryan Dahl 2010-04-22 17:31:35 -07:00
parent 6abdf051d3
commit 0633e5cac9
1 changed files with 15 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
lib/events.js
View File

@ -2,7 +2,8 @@ exports.EventEmitter = process.EventEmitter;
process.EventEmitter.prototype.emit = function (type) { process.EventEmitter.prototype.emit = function (type) {
if (type == 'error') { // If there is no 'error' event listener then throw.
if (type === 'error') {
if (!this._events || !this._events.error || if (!this._events || !this._events.error ||
(this._events.error instanceof Array && !this._events.error.length)) (this._events.error instanceof Array && !this._events.error.length))
{ {
@ -19,9 +20,17 @@ process.EventEmitter.prototype.emit = function (type) {
if (!this._events[type]) return false; if (!this._events[type]) return false;
if (typeof this._events[type] == 'function') { if (typeof this._events[type] == 'function') {
var args = Array.prototype.slice.call(arguments, 1); if (arguments.length < 3) {
// fast case
this._events[type].apply(this, args); this._events[type].call( this
, arguments[1]
, arguments[2]
);
} else {
// slower
var args = Array.prototype.slice.call(arguments, 1);
this._events[type].apply(this, args);
}
return true; return true;
} else if (this._events[type] instanceof Array) { } else if (this._events[type] instanceof Array) {