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//------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//------------------------------------------------------------
namespace System.ServiceModel.Diagnostics
{
using System.Diagnostics;
using System.Runtime;
using System.ServiceModel;
internal class DefaultPerformanceCounters : PerformanceCountersBase
{
string instanceName;
enum PerfCounters : int
{
Instances = 0,
TotalCounters = Instances + 1
}
string[] perfCounterNames =
{
PerformanceCounterStrings.SERVICEMODELSERVICE.SInstances,
};
const int maxCounterLength = 64;
const int hashLength = 2;
[Flags]
enum truncOptions : uint
{
NoBits = 0,
service32 = 0x01,
uri31 = 0x04
}
internal PerformanceCounter[] Counters { get; set; }
internal override string InstanceName
{
get
{
return this.instanceName;
}
}
internal override string[] CounterNames
{
get
{
return this.perfCounterNames;
}
}
internal override int PerfCounterStart
{
get { return (int)PerfCounters.Instances; }
}
internal override int PerfCounterEnd
{
get { return (int)PerfCounters.TotalCounters; }
}
static internal string CreateFriendlyInstanceName(ServiceHostBase serviceHost)
{
// It is a shared instance across all services which have the default counter enabled
return "_WCF_Admin";
}
internal DefaultPerformanceCounters(ServiceHostBase serviceHost)
{
this.instanceName = DefaultPerformanceCounters.CreateFriendlyInstanceName(serviceHost);
this.Counters = new PerformanceCounter[(int)PerfCounters.TotalCounters];
for (int i = 0; i < (int)PerfCounters.TotalCounters; i++)
{
try
{
PerformanceCounter counter = PerformanceCounters.GetDefaultPerformanceCounter(this.perfCounterNames[i], this.instanceName);
if (counter != null)
{
this.Counters[i] = counter;
}
else
{
break;
}
}
#pragma warning suppress 56500 // covered by FxCOP
catch (Exception e)
{
if (Fx.IsFatal(e))
{
throw;
}
if (DiagnosticUtility.ShouldTraceError)
{
TraceUtility.TraceEvent(TraceEventType.Error, TraceCode.PerformanceCountersFailedForService,
SR.GetString(SR.TraceCodePerformanceCountersFailedForService), null, e);
}
break;
}
}
}
internal override bool Initialized
{
get { return this.Counters != null; }
}
protected override void Dispose(bool disposing)
{
try
{
if (disposing)
{
if (PerformanceCounters.PerformanceCountersEnabled)
{
if (null != this.Counters)
{
for (int ctr = this.PerfCounterStart; ctr < this.PerfCounterEnd; ++ctr)
{
PerformanceCounter counter = this.Counters[ctr];
if (counter != null)
{
PerformanceCounters.ReleasePerformanceCounter(ref counter);
}
this.Counters[ctr] = null;
}
this.Counters = null;
}
}
}
}
finally
{
base.Dispose(disposing);
}
}
}
}
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