Fair enough; I didn't realize that ":memory:" SQLite accesses did zero syscalls overall, I had assumed that they required shared memory writes that entailed sys

Fair enough; I didn't realize that ":memory:" SQLite accesses did zero syscalls overall, I had assumed that they required shared memory writes that entailed syscalls for barriers and the like. I'm happy you helped me learn that's not the case! That'll make several things I regularly need to do much, much easier.