Re: Some problems writing a threaded program

John Vogel wrote:

Thankyou both Don Stewart and Simon Marlow for your responses.

By adding yield and threadDelay in certain spots I have at least prevented some of the threads from being starved of CPU time.

The only issue now is that terminateProcess doesn't always terminate netstat.exe in the cmd.exe so I don't get an exit condition.

Windows doesn't have the same concept of process groups that Unix has, so killing a shell doesn't necessarily kill its children. Have a look at the hoops Ian had to jump through to get this working for our timeout program in the GHC testsuite: http://darcs.haskell.org/testsuite/timeout/ Cheers, Simon