Thu, 26 Jul 2001 16:44:57 +0200, George Russell pisze:

Is there a way in Glasgow Haskell to get a thread to wait on a child process in the same way as the Posix function wait(), and get the termination status of the child?

There is no easy way: all Haskell's thread run in the same process and wait() blocks the whole process. The only (or the only portable) way is to call wait() with WNOHANG repeatedly in a thread and threadDelay for a short period of time between calls. This is what OCaml runtime does. It provides waiting for a process as a threading primitive. It accounts for waiting in its select() loop in the scheduler. -- __("< Marcin Kowalczyk * qrczak@knm.org.pl http://qrczak.ids.net.pl/ \__/ ^^ SYGNATURA ZASTÊPCZA QRCZAK