C#

<br />
<br />
// Create the process.<br />
Process pTool = ....<br />
<br />
// Object to use to get the process stats.<br />
ManagementScope oMs = new ManagementScope();<br />
UInt64 iPreviousTime = 0;<br />
DateTime dtPreviousTimestamp = DateTime.Now;<br />
<br />
// Start the process.<br />
pTool.Start();<br />
<br />
while (!pTool.HasExited)<br />
{<br />
   // Get the total time, in milliseconds, for this process.<br />
   pTool.Refresh();<br />
   UInt64 iCurrentTime = (UInt64)pTool.TotalProcessorTime.Milliseconds;<br />
<br />
   // Add the time for the child processes.<br />
   iCurrentTime += GetProcessTime(oMs, (uint)pTool.Id);<br />
<br />
   // Get the current time.<br />
   DateTime dtNow = DateTime.Now;<br />
<br />
   // Get the difference since the last call.<br />
   UInt64 iDiff = iCurrentTime - iPreviousTime;<br />
   TimeSpan tsDiff = dtNow - dtPreviousTimestamp;<br />
<br />
   // How much of the previous timespan was this process running?<br />
   float fPercent = (float)(iDiff) / (float)tsDiff.Milliseconds;<br />
<br />
   string strDebug = string.Format("Elapsed time: {0}\tProcess time: {1} ({2})",<br />
      tsDiff.TotalMilliseconds, iDiff.ToString(), fPercent.ToString());<br />
   Debug.WriteLine(strDebug);<br />
<br />
   // Remember the current values.<br />
   iPreviousTime = iCurrentTime;<br />
   dtPreviousTimestamp = dtNow;<br />
<br />
   // Wait a second before re-checking process status.<br />
   System.Threading.Thread.Sleep(1000);<br />
}<br />
<br />
private UInt64 GetProcessTime(ManagementScope oMs, uint iParentId)<br />
{<br />
   // Build the query.<br />
   ObjectQuery oQuery = new ObjectQuery("select Name,ProcessId,UserModeTime,KernelModeTime from win32_process where ParentProcessId=" + iParentId.ToString());<br />
   // Execute the query.<br />
   ManagementObjectSearcher oSearcher = new ManagementObjectSearcher(oMs, oQuery);<br />
   // Get the results<br />
   ManagementObjectCollection oReturnCollection = oSearcher.Get();   <br />
   // Loop through child processes.<br />
   UInt64 iTotalTime = 0;<br />
   foreach (ManagementObject oReturn in oReturnCollection)<br />
   {<br />
      string strName = oReturn["Name"].ToString();<br />
      uint iProcessId = uint.Parse(oReturn["ProcessId"].ToString());<br />
<br />
      // Time is in 100 nanosecond units, convert to milliseconds.<br />
      UInt64 iUserModeTime = UInt64.Parse(oReturn["UserModeTime"].ToString()) / 10000;<br />
      UInt64 iKernelModeTime = UInt64.Parse(oReturn["KernelModeTime"].ToString()) / 1000;<br />
<br />
      Debug.WriteLine("Parent: " + iParentId.ToString() + "\tProcess: " + iProcessId.ToString() + " (" + strName + ")\tTime: " + (iUserModeTime + iKernelModeTime).ToString());<br />
<br />
      // Get the time for the child processes.<br />
      UInt64 iChildTime = GetProcessTime(oMs, iProcessId);<br />
<br />
      // Get the total.<br />
      iTotalTime += (iChildTime + iUserModeTime + iKernelModeTime);<br />
   }<br />
   return iTotalTime;<br />
}<br />