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116 lines
3.7 KiB
JavaScript
116 lines
3.7 KiB
JavaScript
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Jetpack.
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*
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* The Initial Developer of the Original Code is Mozilla.
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* Portions created by the Initial Developer are Copyright (C) 2007
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Atul Varma <atul@mozilla.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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var compactTimerId;
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var COMPACT_INTERVAL = 5000;
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var trackedObjects = {};
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function scheduleNextCompaction() {
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compactTimerId = require("timer").setTimeout(compact, COMPACT_INTERVAL);
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}
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function compact() {
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var newTrackedObjects = {};
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for (name in trackedObjects) {
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var oldBin = trackedObjects[name];
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var newBin = [];
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var strongRefs = [];
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for (var i = 0; i < oldBin.length; i++) {
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var strongRef = oldBin[i].weakref.get();
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if (strongRef && strongRefs.indexOf(strongRef) == -1) {
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strongRefs.push(strongRef);
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newBin.push(oldBin[i]);
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}
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}
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if (newBin.length)
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newTrackedObjects[name] = newBin;
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}
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trackedObjects = newTrackedObjects;
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scheduleNextCompaction();
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}
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var track = exports.track = function track(object, bin, stackFrameNumber) {
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if (!compactTimerId)
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scheduleNextCompaction();
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var frame = Components.stack.caller;
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var weakref = Cu.getWeakReference(object);
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if (!bin)
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bin = object.constructor.name;
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if (bin == "Object")
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bin = frame.name;
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if (!bin)
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bin = "generic";
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if (!(bin in trackedObjects))
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trackedObjects[bin] = [];
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if (stackFrameNumber > 0)
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for (var i = 0; i < stackFrameNumber; i++)
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frame = frame.caller;
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trackedObjects[bin].push({weakref: weakref,
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created: new Date(),
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filename: frame.filename,
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lineNo: frame.lineNumber});
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};
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var getBins = exports.getBins = function getBins() {
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var names = [];
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for (name in trackedObjects)
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names.push(name);
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return names;
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};
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var getObjects = exports.getObjects = function getObjects(bin) {
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function getLiveObjectsInBin(bin, array) {
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for (var i = 0; i < bin.length; i++) {
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var object = bin[i].weakref.get();
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if (object)
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array.push(bin[i]);
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}
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}
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var results = [];
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if (bin) {
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if (bin in trackedObjects)
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getLiveObjectsInBin(trackedObjects[bin], results);
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} else
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for (name in trackedObjects)
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getLiveObjectsInBin(trackedObjects[name], results);
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return results;
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};
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require("unload").when(function() { trackedObjects = {}; });
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