many_cpus 2.4.0

Efficiently schedule work and inspect the hardware environment on many-processor systems
Documentation 
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#![cfg_attr(
    test,
    expect(
        clippy::struct_field_names,
        reason = "false positive from automock generated code"
    )
)]

use std::fmt::Debug;
use std::io;

use libc::cpu_set_t;

/// Bindings for FFI calls into external libraries (either provided by operating system or not).
///
/// All PAL FFI calls must go through this trait, enabling them to be mocked.
#[cfg_attr(test, mockall::automock)]
pub(crate) trait Bindings: Debug + Send + Sync + 'static {
    // sched_setaffinity() for the current thread
    fn sched_setaffinity_current(&self, cpuset: &cpu_set_t) -> Result<(), io::Error>;

    // sched_getaffinity() for the current thread
    fn sched_getaffinity_current(&self) -> Result<cpu_set_t, io::Error>;

    fn sched_getcpu(&self) -> i32;
}