Function sched_getaffinity

pub fn sched_getaffinity(pid: Pid) -> Result<CpuSet>

sched_getaffinity get a thread’s CPU affinity mask (sched_getaffinity(2))

pid is the thread ID to check. If pid is zero, then the calling thread is checked.

Returned cpuset is the set of CPUs on which the thread is eligible to run.

Example

Checking if the current thread can run on CPU 0 can be done as follows:

use nix::sched::sched_getaffinity;
use nix::unistd::Pid;

let cpu_set = sched_getaffinity(Pid::from_raw(0)).unwrap();
if cpu_set.is_set(0).unwrap() {
    println!("Current thread can run on CPU 0");
}