add terminateProcess

[joeyh]

There currently seems to be no way to use this library to terminate an arbitrary process by ProcessID.

Some code that has worked for me to do this in the past is this:

import System.Win32.Process
import Control.Exception (bracket)
import Control.Monad

terminateProcess :: ProcessID -> IO ()
terminateProcess p = bracket 
        (openProcess pROCESS_TERMINATE False p)
        (void . c_closeProcess)
       (\h -> void $ c_TerminateProcess h 1)

 foreign import ccall unsafe "windows.h TerminateProcess"
        c_TerminateProcess :: ProcessHandle -> Int -> IO Int

[joeyh]

Might want to call it terminateProcessID instead to avoid name conflict with System.Process.terminateProcess