private void Initialize(object state)
{
if (Logging.On) Logging.PrintInfo(Logging.Web, SR.GetString(SR.net_perfcounter_initialization_started));
PerformanceCounterPermission perfCounterPermission = new PerformanceCounterPermission(PermissionState.Unrestricted);
perfCounterPermission.Assert();
try
{
if (!PerformanceCounterCategory.Exists(categoryName))
{
// if the perf. counter category doesn't exist, just log this information and exit.
if (Logging.On) Logging.PrintError(Logging.Web, SR.GetString(SR.net_perfcounter_nocategory, categoryName));
return;
}
string instanceName = GetInstanceName();
Debug.Assert(counterNames.Length == Enum.GetValues(typeof(NetworkingPerfCounterName)).Length,
"The number of NetworkingPerfCounterName items must match the number of CounterNames");
// create the counters, this will check for the right permissions (false)
// means the counter is not readonly (it's read/write) and cache them while
// we're under the Assert(), which will be reverted in the finally below.
counters = new CounterPair[counterNames.Length];
for (int i = 0; i < counterNames.Length; i++)
{
counters[i] = CreateCounterPair(counterNames[i], instanceName);
}
AppDomain.CurrentDomain.DomainUnload += new EventHandler(UnloadEventHandler);
AppDomain.CurrentDomain.ProcessExit += new EventHandler(ExitEventHandler);
AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(ExceptionEventHandler);
initSuccessful = true;
}
catch (Win32Exception e)
{
if (Logging.On) Logging.Exception(Logging.Web, "NetworkingPerfCounters", "Initialize", e);
Cleanup();
return;
}
catch (InvalidOperationException e)
{
if (Logging.On) Logging.Exception(Logging.Web, "NetworkingPerfCounters", "Initialize", e);
Cleanup();
return;
}
finally
{
PerformanceCounterPermission.RevertAssert();
initDone = true;
if (Logging.On)
{
if (initSuccessful)
{
Logging.PrintInfo(Logging.Web, SR.GetString(SR.net_perfcounter_initialized_success));
}
else
{
Logging.PrintInfo(Logging.Web, SR.GetString(SR.net_perfcounter_initialized_error));
}
}
}
}