Function nc::shmget

pub fn shmget(key: key_t, size: size_t, shmflg: i32) -> Result<i32, Errno>

Allocates a System V shared memory segment.

let size = 4 * nc::PAGE_SIZE;
let flags = nc::IPC_CREAT | nc::IPC_EXCL | 0o600;
let ret = nc::shmget(nc::IPC_PRIVATE, size, flags);
assert!(ret.is_ok());
let _shmid = ret.unwrap();