V8Js: improved fluent setter performance
After fixing V8Js’ behaviour of not retaining the object identity of passed back V8Object
instances (i.e. always re-wrapping them, instead of re-using the already existing object)
I tried how V8Js handles fluent setters (those that return $this at the end).
Unfortunately they weren’t handled well, that is V8Js always wrapped the same object again and again (in both directions). Functionality-wise that doesn’t make a big difference since the underlying object is the same, hence further setters can still be called.
But still the wrapping code takes some time – with simple “just store that” setters it is approximately half of the time. Here is a performance comparison of calling 200000 minimalist fluent setters one after another:
Besides the performance gain it also keeps object identity intact, however I assume noone ever stores the result of such a setter to a variable and compares it against another object. So that isn’t a big deal by itself.