JP Camara @jpcamara.com · Jan 14 1 / 2
But the inline caches only improve the performance of explicit method calls. Direct method calls are related to "calldata". This "calldata" maps directly to a struct in CRuby called "rb_call_data", which contains information about the call, and a "call cache". /5
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There's only one "call cache" per "call data", - when our program is compiled it can only produce "call data" structures for method calls it knows about ahead of time. "obj.my_method" gets an explicit "call cache". But for `obj.send(:my_method)`, only the "send" call gets a "call cache"! /6