nc 0.9.8

Access system calls directly
Documentation 
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/// Get a thread's CPU affinity mask.
pub unsafe fn _sched_getaffinity(
    pid: pid_t,
    lid: lwpid_t,
    size: size_t,
    cpuset: &mut cpuset_t,
) -> Result<(), Errno> {
    let pid = pid as usize;
    let lid = lid as usize;
    let cpuset_ptr = core::ptr::from_mut(cpuset) as usize;
    unsafe { syscall4(SYS__SCHED_GETAFFINITY, pid, lid, size, cpuset_ptr).map(drop) }
}