PerformanceCountersBase.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / ServiceModel / System / ServiceModel / Diagnostics / PerformanceCountersBase.cs / 1 / PerformanceCountersBase.cs
                        

                        
                            //------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------
namespace System.ServiceModel.Diagnostics
{ 
    using System.Diagnostics;
    using System.ServiceModel.Diagnostics; 
    using System.Runtime.InteropServices; 
    using System.Globalization;
 
    internal abstract class PerformanceCountersBase
    {
        internal abstract PerformanceCounter[] Counters
        { 
            get;
            set; 
        } 

        internal abstract string InstanceName 
        {
            get;
        }
 
        internal abstract string[] CounterNames
        { 
            get; 
        }
 
        internal abstract int PerfCounterStart
        {
            get;
        } 

        internal abstract int PerfCounterEnd 
        { 
            get;
        } 

        internal void Increment(int counterIndex)
        {
            PerformanceCounter[] counters = this.Counters; 
            PerformanceCounter counter = null;
            try 
            { 
                if (counters != null)
                { 
                    counter = counters[counterIndex];
                    if (counter != null)
                    {
                        counter.Increment(); 
                    }
                } 
            } 
#pragma warning suppress 56500 // covered by FxCOP
            catch (Exception e) 
            {
                if (DiagnosticUtility.IsFatal(e)) throw;
                PerformanceCounters.TracePerformanceCounterUpdateFailure(this.InstanceName, this.CounterNames[counterIndex]);
                if (counters != null) 
                {
                    counters[counterIndex] = null; 
                    PerformanceCounters.ReleasePerformanceCounter(ref counter); 
                }
            } 
        }

        internal void IncrementBy(int counterIndex, long time)
        { 
            PerformanceCounter[] counters = this.Counters;
            PerformanceCounter counter = null; 
            try 
            {
                if (counters != null) 
                {
                    counter = counters[counterIndex];
                    if (counter != null)
                    { 
                        counter.IncrementBy(time);
                    } 
                } 
            }
#pragma warning suppress 56500 // covered by FxCOP 
            catch (Exception e)
            {
                if (DiagnosticUtility.IsFatal(e)) throw;
                PerformanceCounters.TracePerformanceCounterUpdateFailure(this.InstanceName, this.CounterNames[counterIndex]); 
                if (counters != null)
                { 
                    counters[counterIndex] = null; 
                    PerformanceCounters.ReleasePerformanceCounter(ref counter);
                } 
            }
        }

        internal void Decrement(int counterIndex) 
        {
            PerformanceCounter[] counters = this.Counters; 
            PerformanceCounter counter = null; 
            try
            { 
                if (counters != null)
                {
                    counter = counters[counterIndex];
                    if (counter != null) 
                    {
                        counter.Decrement(); 
                    } 
                }
            } 
#pragma warning suppress 56500 // covered by FxCOP
            catch (Exception e)
            {
                if (DiagnosticUtility.IsFatal(e)) throw; 
                PerformanceCounters.TracePerformanceCounterUpdateFailure(this.InstanceName, this.CounterNames[counterIndex]);
                if (counters != null) 
                { 
                    counters[counterIndex] = null;
                    PerformanceCounters.ReleasePerformanceCounter(ref counter); 
                }
            }
        }
 

        // remove count chars from string and add a 2 char hash code to beginning or end, as specified. 
        protected static string GetHashedString(string str, int startIndex, int count, bool hashAtEnd) 
        {
            string returnVal = str.Remove(startIndex, count); 
            string hash = ((uint)str.GetHashCode() % 99).ToString("00", CultureInfo.InvariantCulture);
            return hashAtEnd ? returnVal + hash : hash + returnVal;
        }
 
        internal void ReleasePerformanceCounters()
        { 
            if (PerformanceCounters.PerformanceCountersEnabled) 
            {
                PerformanceCounter[] counters = this.Counters; 
                this.Counters = null;
                if (null != counters)
                {
                    for (int ctr = this.PerfCounterStart; ctr < this.PerfCounterEnd; ++ctr) 
                    {
                        PerformanceCounter counter = counters[ctr]; 
                        if (counter != null) 
                        {
                            PerformanceCounters.ReleasePerformanceCounter(ref counter); 
                        }
                        counters[ctr] = null;
                    }
                } 
            }
        } 
    } 
}

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

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