Demo/bin/Debug/front_end/sdk/CPUProfileDataModel.js

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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.


/**
 * @constructor
 * @param {!ProfilerAgent.CPUProfile} profile
 */
WebInspector.CPUProfileDataModel = function(profile)
{
    this.profileHead = profile.head;
    this.samples = profile.samples;
    this.timestamps = profile.timestamps;
    this.profileStartTime = profile.startTime * 1000;
    this.profileEndTime = profile.endTime * 1000;
    this._assignParentsInProfile();
    if (this.samples) {
        this._normalizeTimestamps();
        this._buildIdToNodeMap();
        this._fixMissingSamples();
        this._fixLineAndColumnNumbers();
    }
    this._calculateTimes(profile);
}

WebInspector.CPUProfileDataModel.prototype = {
    /**
     * @param {!ProfilerAgent.CPUProfile} profile
     */
    _calculateTimes: function(profile)
    {
        function totalHitCount(node) {
            var result = node.hitCount;
            for (var i = 0; i < node.children.length; i++)
                result += totalHitCount(node.children[i]);
            return result;
        }
        profile.totalHitCount = totalHitCount(profile.head);

        var duration = this.profileEndTime - this.profileStartTime;
        var samplingInterval = duration / profile.totalHitCount;
        this.samplingInterval = samplingInterval;

        function calculateTimesForNode(node) {
            node.selfTime = node.hitCount * samplingInterval;
            var totalHitCount = node.hitCount;
            for (var i = 0; i < node.children.length; i++)
                totalHitCount += calculateTimesForNode(node.children[i]);
            node.totalTime = totalHitCount * samplingInterval;
            return totalHitCount;
        }
        calculateTimesForNode(profile.head);
    },

    _fixLineAndColumnNumbers: function()
    {
        var nodeListsToTraverse = [ this.profileHead.children ];
        while (nodeListsToTraverse.length) {
            var nodeList = nodeListsToTraverse.pop();