Function nc::shmdt

pub unsafe fn shmdt(shmaddr: usize) -> Result<(), Errno>

Detach the System V shared memory segment.

Example

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

let addr: usize = 0;
let ret = unsafe { nc::shmat(shmid, addr, 0) };
assert!(ret.is_ok());
let addr = ret.unwrap();

let mut buf = nc::shmid_ds_t::default();
let ret = unsafe { nc::shmctl(shmid, nc::IPC_STAT, &mut buf) };
assert!(ret.is_ok());

let ret = unsafe { nc::shmdt(addr) };
assert!(ret.is_ok());

let ret = unsafe { nc::shmctl(shmid, nc::IPC_RMID, &mut buf) };
assert!(ret.is_ok());