bulat.ziganshin: > Hello Donald, > > Sunday, October 22, 2006, 9:04:02 AM, you wrote: > > >> can't you define this call as 'safe'? > > > But is it safe. Hmm.... I get kind of queasy when mucking about in the rts. > > i don't understand you (because of my weak English). > > 'safe' specifier is just says that function should be called in _safe_ > way that will allow to continue execute other Haskell threads. for > functions declared as 'unsafe' GHC uses simplified call method that > freezes execution of all Haskell threads until called function will > return > > look for details in http://www.haskell.org/~simonmar/papers/conc-ffi.pdf
Yes, I understand this. I just don't know how safe it is to have other threads continue executing while I'm swapping code in and out of the system... > > foreign import ccall unsafe "lookupSymbol" > > c_lookupSymbol :: CString -> IO (Ptr a) This could be safe, then, for other threads to continue. Yes. -- Don _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
