TraceLog.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / MS / Internal / Utility / TraceLog.cs / 1305600 / TraceLog.cs
                        

                        
                            //---------------------------------------------------------------------------- 
//
// 
//    Copyright (C) Microsoft Corporation.  All rights reserved.
//  
//
// Description: Log of recent actions.  Use this to debug those nasty problems 
// that don't repro on demand and don't have enough information in a crash 
// dump.
// 
//  In the class(es) of interest, add a TraceLog object.  At points of
//  interest, call TraceLog.Add to record a string in the log.  After the
//  crash, call TraceLog.WriteLog (or simply examine the log directly in
//  the debugger).  Log entries are timestamped. 
//
//--------------------------------------------------------------------------- 
 
using System;
using System.Collections; 
using System.Globalization;

namespace MS.Internal.Utility
{ 
    internal class TraceLog
    { 
        // create an unbounded trace log 
        internal TraceLog() : this(Int32.MaxValue) {}
 
        // create a trace log that remembers the last 'size' actions
        internal TraceLog(int size)
        {
            _size = size; 
            _log = new ArrayList();
        } 
 
        // add an entry to the log.  Args are just like String.Format
        internal void Add(string message, params object[] args) 
        {
            // create timestamped message string
            string s = DateTime.Now.Ticks.ToString(CultureInfo.InvariantCulture)
                        + " " 
                        + String.Format(CultureInfo.InvariantCulture, message, args);
 
            // if log is full, discard the oldest message 
            if (_log.Count == _size)
                _log.RemoveAt(0); 

            // add the new message
            _log.Add(s);
        } 

        // write the log to the console 
        internal void WriteLog() 
        {
            for (int k=0; k<_log.Count; ++k) 
                Console.WriteLine(_log[k]);
        }

        // return a printable id for the object 
        internal static string IdFor(object o)
        { 
            if (o == null) 
                return "NULL";
            else 
                return String.Format(CultureInfo.InvariantCulture, "{0}.{1}",
                        o.GetType().Name, o.GetHashCode());
        }
 
        ArrayList _log;
        int _size; 
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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