Simon Marlow wrote: > John Goerzen wrote: >> Brian B wrote: >>> Hi Bulat, >>> >>> My contribution to the survey: I've used forkProcess to daemonize >>> a ghc program inside the haskell fuse bindings: >>> http://hackage.haskell.org/cgi-bin/hackage-scripts/package/HFuse >>> http://code.haskell.org/hfuse/System/Fuse.hsc >>> >>> If removing the non-threaded RTS would break forkProcess entirely, >>> these bindings would have to do something different. The issue: users >>> of the FUSE C api will get daemonized using daemon(2); it'd be >>> nice if GHC fuse programs could behave similarly. >> I also use forkProcess extensively: in HSH, for instance, which is used >> by hpodder, twidge, and a host of other tools. Removing the ability to >> use forkProcess removes the ability to write a Unix shell in Haskell, or >> to do anything shell-like, or anything even mildly advanced involving >> piping, file descriptors, and the like. I would see it as a significant >> regression. > > Have you tried those apps with the threaded RTS? I'd be interested to > know whether they work as expected.
I have, and it didn't work well. But it's been awhile, and I can't tell you anymore what version of GHC or what exactly the problem was. I was most certainly 6.8 or older. Once 6.10 hits Debian, I could test again there. But see below... > I'm not suggesting we remove the non-threaded RTS, however perhaps > there's an argument for making -threaded the default. After all, that's > what you get with GHCi by default right now. That's probably an OK solution. I would also add: does the threaded RTS support all platforms? For instance, GHC runs on my Alpha and on AIX, unregisterised. ghci doesn't run there, but GHC does. If you drop the non-threaded RTS, does that mean that GHC doesn't work there at all? >> The System.Process calls, last I checked (in 6.8.x) were both too buggy >> to use for complex tasks, and too inadequate for some (though the >> adequacy has been improving.) > > If there's bugginess we need to get it fixed - please report those bugs! Already done: http://hackage.haskell.org/trac/ghc/ticket/1780 (still open since Nov 2007) There was also a thread here regarding problems with the threaded RTS: http://www.mail-archive.com/glasgow-haskell-users@haskell.org/msg11573.html Not sure if that has been fixed, or was an error on my part, but see your reply at: http://www.mail-archive.com/glasgow-haskell-users@haskell.org/msg11585.html I admit I haven't had the chance to reread that whole thread, so my apologies if this is a red herring. -- John _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users