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Use Symbols for console timers if available. See joyent/node#9069.

This commit is contained in:
Alan Plum 2015-01-21 18:32:59 +01:00
parent ad4ada00a1
commit 2346170016
1 changed files with 14 additions and 5 deletions
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19
js/common/bootstrap/module-console.js
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@ -1,5 +1,5 @@
/*jshint -W051: true */
/*global require, SYS_GETLINE, SYS_LOG, jqconsole */
/*global require, SYS_GETLINE, SYS_LOG, jqconsole, Symbol */
////////////////////////////////////////////////////////////////////////////////
/// @brief module "console"
@ -53,7 +53,13 @@
/// @brief timers
////////////////////////////////////////////////////////////////////////////////
var timers = { };
var timers;
try {
timers = Object.create(null);
}
catch (err) {
timers = {};
}
// -----------------------------------------------------------------------------
// --SECTION-- private functions
@ -374,7 +380,9 @@
throw new Error('label must be a string');
}
timers[label] = Date.now();
var symbol = typeof Symbol === 'undefined' ? '%' + label : Symbol.for(label);
timers[symbol] = Date.now();
};
////////////////////////////////////////////////////////////////////////////////
@ -384,7 +392,8 @@
exports.timeEnd = function(label) {
'use strict';
var time = timers[label];
var symbol = typeof Symbol === 'undefined' ? '%' + label : Symbol.for(label);
var time = timers[symbol];
if (! time) {
throw new Error('No such label: ' + label);
@ -392,7 +401,7 @@
var duration = Date.now() - time;
delete timers[label];
delete timers[symbol];
logGroup("info", sprintf('%s: %dms', label, duration));
};