C++ 20 has async/await (but of course named co_async and co_await, because C++ isn't the sort of language where you're allowed nice things, the beatings will continue until morale improves)
However AIUI C++ 20 doesn't actually supply an executor out of the box, so you would need to choose what to do here as for Rust, where they picked both tokio and async-std and you can see they have different performance.
C does only have threads, but you could presumably pull off the same trick in C that Rust does, to get Linux to give you the bare minimum actual resident memory for your thread and you needn't care about the notional "real" size of the thread since we're 64-bit and address space is basically free.
> (but of course named co_async and co_await, because C++ isn't the sort of language where you're allowed nice things, the beatings will continue until morale improves)
However AIUI C++ 20 doesn't actually supply an executor out of the box, so you would need to choose what to do here as for Rust, where they picked both tokio and async-std and you can see they have different performance.
C does only have threads, but you could presumably pull off the same trick in C that Rust does, to get Linux to give you the bare minimum actual resident memory for your thread and you needn't care about the notional "real" size of the thread since we're 64-bit and address space is basically free.