Process ID for current build

[teognost]

I would like to have the current build writing in log its process ID .Any idea how can I do this ?
I have seen Builder object has ProcessID property but in the example provided I see how to do it only when starting a build by VBScript code.
I need this because I have multiple builds running in the same time with VisBuildCmd.exe and when I want to kill one of them I do not know which one when I look in Task Manager.