[project @ 2002-04-10 11:43:43 by stolz]
Two new scheduler-API primops: 1) GHC.Conc.forkProcess/forkProcess# :: IO Int This is a low-level call to fork() to replace Posix.forkProcess(). In a Concurrent Haskell setting, only the thread invoking forkProcess() is alive in the child process. Other threads will be GC'ed! This brings the RTS closer to pthreads, where a call to fork() doesn't clone any pthreads, either. The result is 0 for the child and the child's pid for the parent. The primop will barf() when used on mingw32, sorry. 2) GHC.Conc.labelThread/forkProcess# :: String -> IO () Useful for scheduler debugging: If the RTS is compiled with DEBUGging support, this primitive assigns a name to the current thread which will be used in debugging output (+RTS -D1). For larger applications, simply numbering threads is not sufficient. Notice: The Haskell side of this call is always available, but if you are not compiling with debugging support, the actual primop will turn into a no-op.