On Tuesday, 11 December 2018 at 01:37:25 UTC, Adam D. Ruppe wrote:
On Monday, 10 December 2018 at 23:20:22 UTC, Crayo List wrote:
Are there atomic equivalents of bt(), btc(), bts(), btr() ...
etc from core.bitop?
Those are intrinsics that compile into a single cpu
instruction, so they are probably already atomic...
Thanks Adam,
They need to be prefixed with 'lock' (on x86) in order to be
atomic.
That's what _interlockedbittestandset() on Windows does.
And what this page says;
https://www.felixcloutier.com/x86/LOCK.html
It may be possible to implement using asm { }, but I was
wondering if there wasn't something out there already doing it.
