4 ms·
> I wonder how much this lookup check adds to every app's load time? Based on the IDA disassembly, not much. A few extra CPU instructions has minimal impact ge
by jsjohnst 8y ago
> I wonder how much this lookup check adds to every app's load time?
Based on the IDA disassembly, not much. A few extra CPU instructions has minimal impact generally.
> but is the lookup run only upon first time the app is executed, or on every single run instance?
It’s done every time the function in question is executed from what I can tell.
- saagarjha 8y ago_CFAppVersionCheckLessThan is called every time, yes, but the result of the check is cached as far as I can tell.