TraceEventCache.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / CompMod / System / Diagnostics / TraceEventCache.cs / 1 / TraceEventCache.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

using System; 
using System.Threading; 
using System.Security.Permissions;
using System.Text; 
using System.Collections;
using System.Globalization;

namespace System.Diagnostics { 
    public class TraceEventCache {
 
        private static int processId; 
        private static string processName;
 
        private long timeStamp = -1;
        private DateTime dateTime = DateTime.MinValue;
        private string stackTrace = null;
 
        internal Guid ActivityId {
            get { return Trace.CorrelationManager.ActivityId; } 
        } 

        public string Callstack { 
            get {
                if (stackTrace == null)
                    stackTrace = Environment.StackTrace;
                else 
                    new EnvironmentPermission(PermissionState.Unrestricted).Demand();
 
                return stackTrace; 
            }
        } 

        public Stack LogicalOperationStack {
            get {
                return Trace.CorrelationManager.LogicalOperationStack; 
            }
        } 
 
        public DateTime DateTime {
            get { 
                if (dateTime == DateTime.MinValue)
                    dateTime = DateTime.UtcNow;
                return dateTime;
            } 
        }
 
        public int ProcessId { 
            get {
                return GetProcessId(); 
            }
        }

        public string ThreadId { 
            get {
                return GetThreadId().ToString(CultureInfo.InvariantCulture); 
            } 
        }
 
        public long Timestamp {
            get {
                if (timeStamp == -1)
                    timeStamp = Stopwatch.GetTimestamp(); 
                return timeStamp ;
            } 
        } 

        internal void Clear() { 
            timeStamp = -1;
            dateTime = DateTime.MinValue;
            stackTrace = null;
        } 

        private static void InitProcessInfo() { 
            // Demand unmanaged code permission 
            new SecurityPermission(SecurityPermissionFlag.UnmanagedCode).Demand();
 
            if (processName == null) {
                Process p = Process.GetCurrentProcess();
                try {
                    processId = p.Id; 
                    processName = p.ProcessName;
                } 
                finally { 
                    p.Dispose();
                } 
            }
        }

        internal static int GetProcessId() { 
            InitProcessInfo();
            return processId; 
        } 

        internal static string GetProcessName() { 
            InitProcessInfo();
            return processName;
        }
 
        internal static int GetThreadId() {
            return Thread.CurrentThread.ManagedThreadId; 
        } 
    }
}

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