[ridiculous_fish]

What do you think about signal handlers?

Atomics may be implemented with locks, which makes them unsuitable for signal handlers. The only guaranteed lock-free type is `std::atomic_flag` which is not very useful.

`volatile sig_atomic_t` still seems like the better choice for signals.

[gpderetta]

If the architecture is so broken that atomic load and stores need to use locks, I can't see how would sig_atomic_t would ever be implementable.

[andreyv]

Indeed, "volatile sig_atomic_t" is the recommended official C way to change a flag from a signal handler.