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Perf.as
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55 lines (48 loc) · 1.87 KB
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/*
* Scratch Project Editor and Player
* Copyright (C) 2014 Massachusetts Institute of Technology
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package util {
import flash.utils.getTimer;
public class Perf {
private static var totalStart:uint;
private static var lapStart:uint;
private static var lapTotal:uint;
public static function start(msg:String = null):void {
if (!msg) msg = 'Perf.start';
Scratch.app.log(msg);
totalStart = lapStart = getTimer();
lapTotal = 0;
}
public static function clearLap():void {
lapStart = getTimer();
}
public static function lap(msg:String = ""):void {
if (totalStart == 0) return; // not monitoring performance
var lapMSecs:uint = getTimer() - lapStart;
Scratch.app.log(' ' + msg + ': ' + lapMSecs + ' msecs');
lapTotal += lapMSecs;
lapStart = getTimer();
}
public static function end():void {
if (totalStart == 0) return; // not monitoring performance
var totalMSecs:uint = getTimer() - totalStart;
var unaccountedFor:uint = totalMSecs - lapTotal;
Scratch.app.log('Total: ' + totalMSecs + ' msecs; unaccounted for: ' + unaccountedFor + ' msecs (' + int((100 * unaccountedFor) / totalMSecs) + '%)');
totalStart = lapStart = lapTotal = 0;
}
}}