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fix: reject invalid Linux core ids #12

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fix: reject invalid Linux core ids #12

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15 changes: 12 additions & 3 deletions src/linux.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -4,9 +4,18 @@ use std::mem::{size_of, zeroed};

pub fn set_thread_affinity(core_ids: &[usize]) -> Result<()> {
let mut set: cpu_set_t = unsafe { zeroed() };
unsafe {
for core_id in core_ids {
CPU_SET(*core_id, &mut set);

for &core_id in core_ids {
if core_id >= CPU_SETSIZE as usize {
return Err(From::from(format!(
"invalid core id {}: must be less than CPU_SETSIZE ({})",
core_id,
CPU_SETSIZE
)));
}

unsafe {
CPU_SET(core_id, &mut set);
}
}

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