Hmm, that makes it sound like a job for the JIT: calculate side-effects, if any, and optimize the loop to be parallel if no side-effects are detected. of course, if side effects are rare conditions, that makes things much dicier.
On Thu, Jan 6, 2011 at 3:37 PM, Ricky Clarkson <[email protected]> wrote: > All it takes is for the compiler to know what operations are > side-effect-ful and it can do all the necessary analysis. So, for > instance, it's perfectly doable without any hints for Haskell. For > Java a combination of annotations and inference could do it. > > 2011/1/6 Cédric Beust ♔ <[email protected]>: >> >> >> On Thu, Jan 6, 2011 at 12:25 PM, Ricky Clarkson <[email protected]> >> wrote: >>> >>> Loops where each iteration does not depend on any other iteration can >>> be safely parallelised. That's the connection >> >> Yes, but my point was that a language construct will never be enough to tell >> the compiler that. The developer will always have to give a hint to the >> compiler explicitly. That was my response to the initial argument which >> seemed to imply that index based for loops can't be parallelized while >> foreach loops can. >> >> -- >> Cédric >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "The Java Posse" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]. >> For more options, visit this group at >> http://groups.google.com/group/javaposse?hl=en. >> > > -- > You received this message because you are subscribed to the Google Groups > "The Java Posse" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/javaposse?hl=en. > > -- Joseph B. Ottinger http://enigmastation.com -- You received this message because you are subscribed to the Google Groups "The Java Posse" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/javaposse?hl=en.
