/// <summary>
/// Gets process usage information for a process.
/// </summary>
/// <param name="processId">The process id for which to get the data.</param>
/// <returns>A ProcessData object containing metrics.</returns>
public static ProcessData GetProcessUsage(int processId)
{
ProcessData returnValue = null;
ProcessTimes processTimes = new ProcessTimes();
IntPtr processHandle = NativeMethods.ProcessHandleError;
int snapshotIndex = 0;
while (snapshotIndex < SnapshotCount)
{
Process currentProcess = Process.GetProcessById(processId);
try
{
processHandle = NativeMethods.OpenProcess(NativeMethods.ProcessAllAccess, false, (uint)currentProcess.Id);
bool snapshotSucceeded = NativeMethods.GetProcessTimes(processHandle, out processTimes.RawCreationTime, out processTimes.RawExitTime, out processTimes.RawKernelTime, out processTimes.RawUserTime);
if (snapshotSucceeded)
{
processTimes.ConvertTime();
if (returnValue != null)
{
returnValue.UpdateCpuUsage(processTimes.UserTime.Ticks, processTimes.KernelTime.Ticks);
}
else
{
returnValue = new ProcessData(currentProcess.Id, currentProcess.ProcessName, processTimes.UserTime.Ticks, processTimes.KernelTime.Ticks, currentProcess.WorkingSet64);
}
snapshotIndex++;
}
}
finally
{
if (processHandle != NativeMethods.ProcessHandleError)
{
NativeMethods.CloseHandle(processHandle);
}
}
Thread.Sleep(250);
}
return(returnValue);
}
/// <summary>
/// Gets process usage information for a process.
/// </summary>
/// <param name="processId">The process id for which to get the data.</param>
/// <returns>A ProcessData object containing metrics.</returns>
public static ProcessData GetProcessUsage(int processId)
{
ProcessData returnValue = null;
ProcessTimes processTimes = new ProcessTimes();
IntPtr processHandle = NativeMethods.ProcessHandleError;
int snapshotIndex = 0;
while (snapshotIndex < SnapshotCount)
{
Process currentProcess = Process.GetProcessById(processId);
try
{
processHandle = NativeMethods.OpenProcess(NativeMethods.ProcessAllAccess, false, (uint)currentProcess.Id);
bool snapshotSucceeded = NativeMethods.GetProcessTimes(processHandle, out processTimes.RawCreationTime, out processTimes.RawExitTime, out processTimes.RawKernelTime, out processTimes.RawUserTime);
if (snapshotSucceeded)
{
processTimes.ConvertTime();
if (returnValue != null)
{
returnValue.UpdateCpuUsage(processTimes.UserTime.Ticks, processTimes.KernelTime.Ticks);
}
else
{
returnValue = new ProcessData(currentProcess.Id, currentProcess.ProcessName, processTimes.UserTime.Ticks, processTimes.KernelTime.Ticks, currentProcess.WorkingSet64);
}
snapshotIndex++;
}
}
finally
{
if (processHandle != NativeMethods.ProcessHandleError)
{
NativeMethods.CloseHandle(processHandle);
}
}
Thread.Sleep(250);
}
return returnValue;
}
public static ProcessData[] GetProcessUsage()
{
Dictionary <int, ProcessData> processes = new Dictionary <int, ProcessData>();
ProcessTimes processTimes = new ProcessTimes();
IntPtr processHandle = NativeMethods.ProcessHandleError;
ProcessData currentProcessData;
int total = 0;
int retryCount = 0;
for (int snapshotIndex = 0; snapshotIndex < SnapshotCount; snapshotIndex++)
{
Process[] currentProcesses = Process.GetProcesses();
foreach (Process process in currentProcesses)
{
try
{
processHandle = NativeMethods.OpenProcess(NativeMethods.ProcessAllAccess, false, (uint)process.Id);
if (processHandle != NativeMethods.ProcessHandleError && processHandle != NativeMethods.ProcessHandleZero)
{
bool snapshotSucceeded = NativeMethods.GetProcessTimes(processHandle, out processTimes.RawCreationTime, out processTimes.RawExitTime, out processTimes.RawKernelTime, out processTimes.RawUserTime);
retryCount = 0;
// spend a max. of 2 seconds trying to get the usage for a process
while (!snapshotSucceeded && retryCount < 8)
{
retryCount++;
snapshotSucceeded = NativeMethods.GetProcessTimes(processHandle, out processTimes.RawCreationTime, out processTimes.RawExitTime, out processTimes.RawKernelTime, out processTimes.RawUserTime);
}
processTimes.ConvertTime();
if (processes.TryGetValue(process.Id, out currentProcessData))
{
total += currentProcessData.UpdateCpuUsage(processTimes.UserTime.Ticks, processTimes.KernelTime.Ticks);
}
else
{
processes[process.Id] = new ProcessData(process.Id, process.ProcessName, processTimes.UserTime.Ticks, processTimes.KernelTime.Ticks, process.WorkingSet64);
}
}
}
finally
{
if (processHandle != NativeMethods.ProcessHandleError)
{
NativeMethods.CloseHandle(processHandle);
}
}
}
for (int i = 0; i < processes.Count; i++)
{
if (!currentProcesses.Any(p => p.Id == processes.Keys.ElementAt(i)))
{
processes.Remove(processes.Keys.ElementAt(i));
}
}
Thread.Sleep(250);
}
return(processes.Values.ToArray());
}
public static ProcessData[] GetProcessUsage()
{
Dictionary<int, ProcessData> processes = new Dictionary<int, ProcessData>();
ProcessTimes processTimes = new ProcessTimes();
IntPtr processHandle = NativeMethods.ProcessHandleError;
ProcessData currentProcessData;
int total = 0;
int retryCount = 0;
for (int snapshotIndex = 0; snapshotIndex < SnapshotCount; snapshotIndex++)
{
Process[] currentProcesses = Process.GetProcesses();
foreach (Process process in currentProcesses)
{
try
{
processHandle = NativeMethods.OpenProcess(NativeMethods.ProcessAllAccess, false, (uint)process.Id);
if (processHandle != NativeMethods.ProcessHandleError && processHandle != NativeMethods.ProcessHandleZero)
{
bool snapshotSucceeded = NativeMethods.GetProcessTimes(processHandle, out processTimes.RawCreationTime, out processTimes.RawExitTime, out processTimes.RawKernelTime, out processTimes.RawUserTime);
retryCount = 0;
// spend a max. of 2 seconds trying to get the usage for a process
while (!snapshotSucceeded && retryCount < 8)
{
retryCount++;
snapshotSucceeded = NativeMethods.GetProcessTimes(processHandle, out processTimes.RawCreationTime, out processTimes.RawExitTime, out processTimes.RawKernelTime, out processTimes.RawUserTime);
}
processTimes.ConvertTime();
if (processes.TryGetValue(process.Id, out currentProcessData))
{
total += currentProcessData.UpdateCpuUsage(processTimes.UserTime.Ticks, processTimes.KernelTime.Ticks);
}
else
{
processes[process.Id] = new ProcessData(process.Id, process.ProcessName, processTimes.UserTime.Ticks, processTimes.KernelTime.Ticks, process.WorkingSet64);
}
}
}
finally
{
if (processHandle != NativeMethods.ProcessHandleError)
{
NativeMethods.CloseHandle(processHandle);
}
}
}
for (int i = 0; i < processes.Count; i++)
{
if (!currentProcesses.Any(p => p.Id == processes.Keys.ElementAt(i)))
{
processes.Remove(processes.Keys.ElementAt(i));
}
}
Thread.Sleep(250);
}
return processes.Values.ToArray();
}
