# Kills a process by process name
#
# Uses the Performance Data Helper to locate the PID, then kills it.
# Will only kill the process if there is only one process of that name
# (eg, attempting to kill "Python.exe" will only work if there is only
# one Python.exe running.  (Note that the current process does not
# count - ie, if Python.exe is hosting this script, you can still kill
# another Python.exe (as long as there is only one other Python.exe)

# Really just a demo for the win32pdh(util) module, which allows you
# to get all sorts of information about a running process and many
# other aspects of your system.

import win32api, win32pdhutil, win32con, sys

def killProcName(procname):
	# Change suggested by Dan Knierim, who found that this performed a
	# "refresh", allowing us to kill processes created since this was run
	# for the first time.
	try:
		win32pdhutil.GetPerformanceAttributes('Process','ID Process',procname)
	except:
		pass

	pids = win32pdhutil.FindPerformanceAttributesByName(procname)

	# If _my_ pid in there, remove it!
	try:
		pids.remove(win32api.GetCurrentProcessId())
	except ValueError:
		pass

	if len(pids)==0:
		result = "Can't find %s" % procname
	elif len(pids)>1:
		result = "Found too many %s's - pids=`%s`" % (procname,pids)
	else:
		handle = win32api.OpenProcess(win32con.PROCESS_TERMINATE, 0,pids[0])
		win32api.TerminateProcess(handle,0)
		win32api.CloseHandle(handle)
		result = ""

	return result

if __name__ == '__main__':
	if len(sys.argv)>1:
		for procname in sys.argv[1:]:
			result = killProcName(procname)
			if result:
				print(result)
				print("Dumping all processes...")
				win32pdhutil.ShowAllProcesses()
			else:
				print("Killed %s" % procname)
	else:
		print("Usage: killProcName.py procname ...")
