// * bit zero is used for atomic bit test and yield loops
// ( keyed events are an optimization mechanism for Windows XPs spinloop i had accidentally recreated in xenus. )
// ( originally, nt yielding sucked with the most barebones spinlock being dumb a hypervisor-unaware, smt-aware, spinner. )
// ( keyed events would then go in these spinners to serve as an early futex as early back as the year 2000 (?). )
// ( that does, in fact, mean the free-toddlers crying about how 'windows stole muh kernels totally originally idea' is entirely wrong at each sub-point. )
// ( though, keyed didn't see much use until Windows Vistas synch primitives were built on top of them. )
// ( infamously missing 100ths scale nanosecond yimeouts and an inablity to lock with a timeout. )
// ( raymond chen once claimed they didnt make it to xp because they werent fast enough )
// ( raymond chen once claimed a "con" of keyedevents were that they were linear )
// ( problem is, as far as i can tell, they didnt really change. whats worse, WakeOnAddress (windows 8+)
// ( ...inherits the issue of not having relative/abs nanosecond scale timeouts AND the issue the primitives sucking. )
// ( WakeOnAddress is nothing more than keyed events 2.0 - but with userland list keeping. )
// ( scratch the concept of how i implement WakeOnAddress with lists, how older nts waited with lists under lock, )
// ( they use hashmaps with "le meme lockless" interactions which are surly less expensive than reusing tls allocations ?! )
// ( whether or not its even faster is still up for debate. its just easier to use. )
// * bit one might be used under some niche versions of windows
// (hearsay paranoia)
// i actually have zero reason to believe windows ever implemented lock-awareness into the kernel
// i think it might be fine to skip the whole bit zero thing, but still, im going to say keep the min=2
// worst case scenario, we end up using these bits.
// ....
// =8 is future proof
// =2 is recommended
// =0 would require a bit of a require. i think this is how other people use keyed events nowadays