Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / Util / Profiler.cs / 1 / Profiler.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* * Profiler.cs * * Copyright (c) 2000 Microsoft Corporation */ namespace System.Web.Util { using System; using System.Web; using System.Web.SessionState; using System.Web.UI; using System.Threading; using System.Collections; internal class Profiler { private int _requestsToProfile; private Queue _requests; private bool _pageOutput; private bool _isEnabled; private bool _oldEnabled; private bool _localOnly; private bool _mostRecent; private TraceMode _outputMode; internal Profiler() { _requestsToProfile = 10; _outputMode = TraceMode.SortByTime; _localOnly = true; _mostRecent = false; _requests = new Queue(_requestsToProfile); } internal bool IsEnabled { get { return _isEnabled;} set { _isEnabled = value; _oldEnabled = value; } } internal bool PageOutput { get { // calling HttpContext.Current is slow, but we'll only get there if _pageOutput is true. return (_pageOutput && !(_localOnly && !HttpContext.Current.Request.IsLocal)); } set { _pageOutput = value; } } internal TraceMode OutputMode { get { return _outputMode;} set { _outputMode = value;} } internal bool LocalOnly { get { return _localOnly;} set { _localOnly = value; } } internal bool MostRecent { get { return _mostRecent; } set { _mostRecent = value; } } internal bool IsConfigEnabled { get { return _oldEnabled; } } internal int RequestsToProfile { get { return _requestsToProfile;} set { // VSWhidbey195368 Silently cap request limit at 10,000 if (value > 10000) { value = 10000; } _requestsToProfile = value; } } internal int RequestsRemaining { get { return _requestsToProfile - _requests.Count;} } internal void Reset() { // start profiling and clear the current log of requests _requests = new Queue(_requestsToProfile); if (_requestsToProfile != 0) _isEnabled = _oldEnabled; else _isEnabled = false; } internal void StartRequest(HttpContext context) { context.Trace.VerifyStart(); } internal void EndRequest(HttpContext context) { context.Trace.EndRequest(); // Don't add the trace data if we aren't enabled if (!IsEnabled) return; // grab trace data and add it to the list lock (_requests) { _requests.Enqueue(context.Trace.GetData()); // If we are storing the most recent, we may need to kick out the first request if (MostRecent) { if (_requests.Count > _requestsToProfile) _requests.Dequeue(); } } // Turn off profiling if we are only tracking the first N requests and we hit the limit. if (!MostRecent && _requests.Count >= _requestsToProfile) EndProfiling(); } internal void EndProfiling() { _isEnabled = false; } internal IList GetData() { return _requests.ToArray(); } } }
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