/// <summary>
/// Returns true if the instance already exists for this category and machine specified.
/// </summary>
public static bool InstanceExists(string instanceName, string categoryName, string machineName)
{
if (instanceName == null)
{
throw new ArgumentNullException(nameof(instanceName));
}
if (categoryName == null)
{
throw new ArgumentNullException(nameof(categoryName));
}
if (categoryName.Length == 0)
{
throw new ArgumentException(SR.Format(SR.InvalidParameter, nameof(categoryName), categoryName), nameof(categoryName));
}
if (!SyntaxCheck.CheckMachineName(machineName))
{
throw new ArgumentException(SR.Format(SR.InvalidParameter, nameof(machineName), machineName), nameof(machineName));
}
PerformanceCounterCategory category = new PerformanceCounterCategory(categoryName, machineName);
return(category.InstanceExists(instanceName));
}
public static bool InstanceExists(string instanceName, string categoryName, string machineName)
{
if (instanceName == null)
{
throw new ArgumentNullException("instanceName");
}
if (categoryName == null)
{
throw new ArgumentNullException("categoryName");
}
if (categoryName.Length == 0)
{
throw new ArgumentException(SR.GetString("InvalidParameter", new object[] { "categoryName", categoryName }));
}
if (!SyntaxCheck.CheckMachineName(machineName))
{
throw new ArgumentException(SR.GetString("InvalidParameter", new object[] { "machineName", machineName }));
}
PerformanceCounterCategory category = new PerformanceCounterCategory(categoryName, machineName);
return(category.InstanceExists(instanceName));
}
PerformanceCounter GetCounter(string category, string counter,
PerformanceCounterType type = PerformanceCounterType.AverageCount64,
string machine = ".", string instance = "_Total")
{
if (!PerformanceCounterCategory.Exists(category))
{
// create category
var counterInfos = new CounterCreationDataCollection();
var counterInfo = new CounterCreationData()
{
CounterType = type,
CounterName = counter,
};
counterInfos.Add(counterInfo);
PerformanceCounterCategory
.Create(category, category, counterInfos);
// check creation
var counters
= new PerformanceCounterCategory(category, machine);
if (!counters.CounterExists(counter))
Debug.Fail("Counter was not created");
if (!counters.InstanceExists(instance))
Debug.Fail("Instance not found");
}
// get counter
var perfCounter = new PerformanceCounter
{
CategoryName = category,
CounterName = counter,
MachineName = machine,
ReadOnly = false,
};
perfCounter.IncrementBy(10);
return perfCounter;
}
private void UniquifyInstanceName(ref string instanceName)
{
// Through experimentation it has been learned that performance counter instances
// with names greater than 64 characters use a shared counter. We have not
// investigated how to use a shared counter, so limit to 64 characters for now
//
// We trim to 60 in order to allow space to uniquify the name _NNN
// (up to 1000 instances of the same name)
if (instanceName.Length > 60)
{
// string msg = string.Format("Trying to create performance counter instance " +
// "greater than 60 characters - {0}, length: {1}. Instance will be " +
// "trimmed to function correctly.", instanceName, instanceName.Length);
//
// EventLog.WriteEntry("Rtp", msg, EventLogEntryType.Warning, (int)RtpEL.ID.PerformanceCounterTooLong);
instanceName = instanceName.Substring(0, 60);
}
// Check to see if the instanceName already exists and choose a different one
PerformanceCounterCategory pcc = new PerformanceCounterCategory(categoryName);
if(pcc.InstanceExists(instanceName))
{
int i = 0;
while(pcc.InstanceExists(instanceName + "_" + (++i)));
instanceName += "_" + i;
}
}
/// <devdoc>
/// Returns true if the instance already exists for this category and machine specified.
/// </devdoc>
public static bool InstanceExists(string instanceName, string categoryName, string machineName) {
if (instanceName == null)
throw new ArgumentNullException("instanceName");
if (categoryName == null)
throw new ArgumentNullException("categoryName");
if (categoryName.Length == 0)
throw new ArgumentException(SR.GetString(SR.InvalidParameter, "categoryName", categoryName));
if (!SyntaxCheck.CheckMachineName(machineName))
throw new ArgumentException(SR.GetString(SR.InvalidParameter, "machineName", machineName));
PerformanceCounterCategory category = new PerformanceCounterCategory(categoryName, machineName);
return category.InstanceExists(instanceName);
}
public DataTable EnumeratePerformanceCounters()
{
DataTable dt = new DataTable();
DataRow dr = null;
// define the table's schema
dt.Columns.Add(new DataColumn("PerfCategoryName", typeof(string)));
dt.Columns.Add(new DataColumn("PerfCounterName", typeof(string)));
dt.Columns.Add(new DataColumn("PerfInstanceName", typeof(string)));
dt.Columns.Add(new DataColumn("PerfCategoryDesc", typeof(string)));
PerformanceCounterCategory[] perfCounterCats = PerformanceCounterCategory.GetCategories();
PerformanceCounterCategory perfCounterCat = null;
PerformanceCounter[] perfCounters = null;
// PerformanceCounterCategoryType - MultiInstance, SingleInstance, Unknown
string catName = string.Empty;
string catDesc = string.Empty;
string counterName = string.Empty;
string[] instanceNames = null;
for (int count = 0; count < perfCounterCats.Length; count++)
{
catName = perfCounterCats[count].CategoryName;
catDesc = perfCounterCats[count].CategoryHelp;
perfCounterCat = new PerformanceCounterCategory(catName);
instanceNames = perfCounterCat.GetInstanceNames();
if (instanceNames.Length > 0)
{
foreach (string instanceName in instanceNames)
{
try
{
if (perfCounterCat.InstanceExists(instanceName))
{
perfCounters = perfCounterCat.GetCounters(instanceName);
foreach (PerformanceCounter perfCounter in perfCounters)
{
counterName = perfCounter.CounterName;
dr = dt.NewRow();
dr[0] = catName;
dr[1] = counterName;
dr[2] = instanceName;
dr[3] = catDesc;
dt.Rows.Add(dr);
}
}
}
catch (Exception ex)
{
System.Diagnostics.Trace.Write(ex.Message + ex.StackTrace, TRACE_CATEGORY);
}
}
}
else
{
foreach (PerformanceCounter perfCounter in perfCounterCat.GetCounters())
{
counterName = perfCounter.CounterName;
dr = dt.NewRow();
dr[0] = catName;
dr[1] = counterName;
dr[2] = BCCUIHelper.Constants.SC303_INSTANCE_NOT_FOUND;
dr[3] = catDesc;
dt.Rows.Add(dr);
}
}
}
return dt;
}
