Benutzer:MovGP0/Performance/Counters
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Performance CounterGetting Current Valuevar cpuCounter = new PerformanceCounter("Process", "% Processor Time", process.ProcessName);
// getting the current value
float value = cpuCounter.NextValue();
Setting a value
var counter = new PerformanceCounter()
{
CategoryName = "MyCategory",
CounterName = "Counter Name",
MachineName = ".",
ReadOnly = false
};
counter.Increment();
counter.IncrementBy(value);
counter.Decrement();
counter.DecrementBy(value);
counter.RawValue(value);
// use this instead of System.DateTime.Now.Ticks
// to get a better measurement
[DllImport("Kernel32.dll")]
public static extern void QueryPerformanceCounter(ref long ticks);
PerformanceCounterSample counter = new PerformanceCounterSample();
QueryPerformanceCounter(ref startTime);
// do something
QueryPerformanceCounter(ref endTime);
counter.DoSomeProcessing(endTime - startTime);
Create a custom Counterconst string CategoryName = "PerfCountersTypringSpeed";
if(!PerformanceCounterCategory.Exists(CategoryName))
{
var counterDataCollection = new CounterCreationDataCollection();
var wpmCounter = new CounterCreationData
{
CounterType = PerformanceCounterType.RateOfCountsPerSecond32,
CounterName = "WordsPerMinute"
};
counterDataCollecction.Add(wpmCounter);
try
{
PerformanceCounterCategory.Create(CategoryName, "Demo category to show how to create and consume counters", PerformanceCounterCategoryType.SingleInstance, counterDataCollection);
}
catch(SecurityException)
{
// user has no permission to create counter
}
}
Getting Admin Permissions
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0>
<trustInfo xmlns="urn:schemas-microsoft-com:asm.v3">
<security>
<requestedPrivileges>
<requestedExecutionLevel level="highestAvailable" />
<!-- or
<requestedExecutionLevel level="requireAdministrator" uiAccess="false" />
-->
</requestedPrivileges>
</security>
</trustInfo>
</assembly>
[assembly:PermissionSetAttribute(SecurityAction.RequestMinimum, Name = "FullTrust")]
or [assembly:PermissionSetAttribute(SecurityAction.RequestMinimum, XML="...")]
with XML value <PermissionSet class=\"System.Security.PermissionSet\" version=\"1\">
<Permission class=\"System.Security.Permissions.UIPermission, mscorlib\" version=\"1\">
<AllWindows/>
</Permission>
<Permission class=\"System.Security.Permissions.RegistryPermission, mscorlib\" version=\"1\">
<Unrestricted/>
</Permission>
</PermissionSet>
or [assembly:PermissionSetAttribute(SecurityAction.RequestMinimum, File = "pset.xml")]
References
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