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javascriptperformancecappuccinoobjective-j

Speed comparison of Cappuccinos obj_msgSend() vs. normal JavaScript-call avaiable?

As you know Cappuccino implements the dispatch mechanism of Objective-C / Smalltalk to send messages to objects (~call their methods) in a special method called objj_msgSend. 

[someObject someMethodToInvocate: aParameter];

Obviously this introduces some overhead and therefor speed-loss. I'd like to know if somebody can provide a speed comparison between this Message Sending and the normal way to execute a method in JavaScript…

someObject.someMethodToInvocate(aParameter);
Solution

  • objj_msgSend is for my simple tests of pure method calling about 2–2.5 times slower than a direct call.

    That is actually quite good, given the advanced features it makes possible.