alt Hacker NewsAll fair points. What do other languages' standard libraries do to walk around clone3 then? If two threads share file descriptors but not virtual memory, do they perform some kind of IPC to lock them for synchronizing reads and writes?
All fair points. What do other languages' standard libraries do to walk around clone3 then? If two threads share file descriptors but not virtual memory, do they perform some kind of IPC to lock them for synchronizing reads and writes?
> What do other languages' standard libraries do to walk around clone3 then?
They don't offer generic clone3 wrappers either AFAIK. All the code I've seen that uses it - and a lot of it is not in standard libraries but in e.g. container runtime implementations - has its own special-purpose code around a specific way to call it.
My point is not that other standard libraries do it better, but that clone3 as a syscall interface is highly versatile, moreso than it could be as a function in either C or most other languages. That is, the syscall API is the right layer for this feature to be.