Method open_existing

crates/stdlib/src/multiprocessing.rs:578–586

(name: &str, vm: &VirtualMachine)

        }

        fn open_existing(name: &str, vm: &VirtualMachine) -> PyResult<Self> {
            let cname = semaphore_name(vm, name)?;
            let raw = unsafe { libc::sem_open(cname.as_ptr(), 0) };
            if raw == libc::SEM_FAILED {
                let err = Errno::last();
                return Err(os_error(vm, err));
            }
            Ok(SemHandle { raw })
        }

        #[inline]
        fn as_ptr(&self) -> *mut sem_t {