Interesting, can you please explain somewhat more? On Saturday, September 21, 2013 3:19:16 AM UTC+4, Ambrose Bonnaire-Sergeant wrote: > > Just a thought, could implementing IKeywordInvoke and using keywords for > field lookups speed up compilation? > > Thanks, > Ambrose > > > On Fri, Sep 20, 2013 at 10:01 PM, Dmitry Groshev > <lambda...@gmail.com<javascript:> > > wrote: > >> In this mail I'm talking about Clojure 1.4, however, I believe that the >> issue persists in later versions, too. >> >> I have quite a lot of code of the following form: >> >> (defprotocol sum-proto >> (sum [x y])) >> >> (deftype Pair >> [^long a ^long b] >> sum-proto >> (sum [x y] >> (let [^Pair y y >> new-a (+ (.a x) (.a y)) >> new-b (+ (.b x) (.b y))] >> (Pair. new-a new-b)))) >> >> In real code there are *a lot* of implementations in that deftype >> generated by macroses. The problem is that compilation time skyrocketed. >> Right now I'm facing 5-10 seconds of compilation, which makes incremental >> development very painful. Profiler shows that the overwhelming majority of >> this time is spent here: [1]. It follows that the problem is in that ^Pair >> annotation: when symbol is tagged by a symbol, it should be resolved as a >> class. It should be way faster if I can "cache" that resolution, but I >> can't given that those implementation are inside of deftype, I can't >> resolve in advance the class that isn't defined. And I can't use >> extend-type either because of the cost of extra var lookup. >> >> The main question is: what can I do to make compilation faster? >> Pre-resolving that class won't work, it seems. >> >> [1]: >> https://github.com/clojure/clojure/blob/master/src/jvm/clojure/lang/Compiler.java#L986 >> >> -- >> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to clo...@googlegroups.com<javascript:> >> Note that posts from new members are moderated - please be patient with >> your first post. >> To unsubscribe from this group, send email to >> clojure+u...@googlegroups.com <javascript:> >> For more options, visit this group at >> http://groups.google.com/group/clojure?hl=en >> --- >> You received this message because you are subscribed to the Google Groups >> "Clojure" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to clojure+u...@googlegroups.com <javascript:>. >> For more options, visit https://groups.google.com/groups/opt_out. >> > >
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