Demo/bin/Debug/front_end/timeline/TimelineJSProfile.js

（开头部分） 16KB

这里只显示每个文件的开头 60 行。登录后可以解锁完整代码。

// 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.


WebInspector.TimelineJSProfileProcessor = { };

/**
 * @param {!ProfilerAgent.CPUProfile} jsProfile
 * @param {!WebInspector.TracingModel.Thread} thread
 * @return {!Array<!WebInspector.TracingModel.Event>}
 */
WebInspector.TimelineJSProfileProcessor.generateTracingEventsFromCpuProfile = function(jsProfile, thread)
{
    if (!jsProfile.samples)
        return [];
    var jsProfileModel = new WebInspector.CPUProfileDataModel(jsProfile);
    var idleNode = jsProfileModel.idleNode;
    var programNode = jsProfileModel.programNode;
    var gcNode = jsProfileModel.gcNode;
    var samples = jsProfileModel.samples;
    var timestamps = jsProfileModel.timestamps;
    var jsEvents = [];
    for (var i = 0; i < samples.length; ++i) {
        var node = jsProfileModel.nodeByIndex(i);
        if (node === programNode || node === gcNode || node === idleNode)
            continue;
        var stackTrace = node._stackTraceArray;
        if (!stackTrace) {
            stackTrace = /** @type {!ConsoleAgent.StackTrace} */ (new Array(node.depth + 1));
            node._stackTraceArray = stackTrace;
            for (var j = 0; node.parent; node = node.parent)
                stackTrace[j++] = /** @type {!ConsoleAgent.CallFrame} */ (node);
        }
        var jsEvent = new WebInspector.TracingModel.Event(WebInspector.TracingModel.DevToolsTimelineEventCategory, WebInspector.TimelineModel.RecordType.JSSample,
            WebInspector.TracingModel.Phase.Instant, timestamps[i], thread);
        jsEvent.args["data"] = { stackTrace: stackTrace };
        jsEvents.push(jsEvent);
    }
    return jsEvents;
}

/**
 * @param {!Array<!WebInspector.TracingModel.Event>} events
 * @return {!Array<!WebInspector.TracingModel.Event>}
 */
WebInspector.TimelineJSProfileProcessor.generateJSFrameEvents = function(events)
{
    /**
     * @param {!ConsoleAgent.CallFrame} frame1
     * @param {!ConsoleAgent.CallFrame} frame2
     * @return {boolean}
     */
    function equalFrames(frame1, frame2)
    {
        return frame1.scriptId === frame2.scriptId && frame1.functionName === frame2.functionName;
    }

    /**
     * @param {!WebInspector.TracingModel.Event} e
后面还有 422 行代码，解锁后查看完整代码

24 小时内免费解锁 3 个项目，之后 1 算力/个。 规则说明

AI 解读 AI

登录后可用，每次 10 算力，解读结果公开显示在下面。

还没有人解读过这个文件。