Stefan O'Rear <[EMAIL PROTECTED]> wrote: > On Thu, May 17, 2007 at 10:32:11PM -0500, Rob Hoelz wrote: > > More questions from Rob regarding his mysterious bindings... > > > > So I've been reading the docs for the FFI, and it's my understanding > > that foreign functions imported as "unsafe" are faster, but they've > > got a problem with callbacks. From what I read, I believe that I > > should just make a foreign function safe if it sets up a callback; > > is this correct? Normally I wouldn't bother people with questions > > like this, but I'd rather be absolutely certain and avoid tracking > > down a strange bug later. > > > > Many thanks as always, > > Rob > > If it *calls* a callback into haskell. > > Also, for unfathomable reasons, safety has been overloaded to include > forking OS threads. If it could block (like getchar), you must make > it safe. > > Stefan
Ouch...how bad is the overhead for a safe function? _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe