/// <summary>
///
/// </summary>
/// <param name="instanceName"></param>
/// <param name="categoryName"></param>
/// <param name="machineName"></param>
/// <returns></returns>
public static PerfmonCounter GetCounterInstance(string instanceName, string categoryName, string machineName)
{
PerfmonCounter counterInstance = null;
string counterKey = string.Format("{0}[{1}.{2}]", instanceName, machineName, categoryName);
if (PerfmonCounterMap.ContainsKey(counterKey))
{
counterInstance = PerfmonCounterMap[counterKey];
}
else
{
lock (syscObject)
{
if (PerfmonCounterMap.ContainsKey(counterKey))
{
counterInstance = PerfmonCounterMap[counterKey];
}
else if (string.IsNullOrEmpty(instanceName) || PerformanceCounterCategory.InstanceExists(instanceName, categoryName, machineName))
{
var counterCategory = GetCounterCategory(categoryName, machineName);
counterInstance = counterCategory.Instances[instanceName];
PerfmonCounterMap[counterKey] = counterInstance;
}
}
}
return(counterInstance);
}
/// <summary>
///
/// </summary>
/// <param name="categoryName"></param>
/// <param name="machineName"></param>
/// <returns></returns>
public static PerfmonCounterCategory GetCounterCategory(string categoryName, string machineName)
{
if (PerformanceCounterCategory.Exists(categoryName, machineName) == false)
{
return(null);
}
var counterCategory = new PerfmonCounterCategory(categoryName, machineName);
counterCategory.CategoryName = categoryName;
var sysCategory = new PerformanceCounterCategory(categoryName, machineName);
var sysInstances = sysCategory.GetInstanceNames();
foreach (var instanceName in sysInstances)
{
var perfmonCounter = new PerfmonCounter(instanceName, categoryName);
var counterItems = sysCategory.GetCounters(instanceName);
foreach (var counterItem in counterItems)
{
perfmonCounter.CounterData.Add(counterItem.CounterName, counterItem);
}
counterCategory.Instances.Add(instanceName, perfmonCounter);
}
if (sysInstances.Length == 0)
{
var categoryCounters = sysCategory.GetCounters();
if (categoryCounters.Length > 0)
{
var instanceName = string.Empty;
var perfmonCounter = new PerfmonCounter(instanceName, categoryName);
var counterItems = sysCategory.GetCounters(instanceName);
foreach (var counterItem in counterItems)
{
perfmonCounter.CounterData.Add(counterItem.CounterName, counterItem);
}
counterCategory.Instances.Add(instanceName, perfmonCounter);
}
}
return(counterCategory);
}
