many_cpus 2.4.0

Efficiently schedule work and inspect the hardware environment on many-processor systems
Documentation 
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//! Observe the processor assigned to the entrypoint thread, displaying an update in the
//! terminal once per second, looping forever.

use std::thread;
use std::time::Duration;

use many_cpus::SystemHardware;

fn main() {
    // Exit early if running in a testing environment
    if std::env::var("IS_TESTING").is_ok() {
        println!("Running in testing mode - exiting immediately to prevent infinite loop");
        return;
    }

    let hw = SystemHardware::current();

    let max_processors = hw.max_processor_count();
    let max_memory_regions = hw.max_memory_region_count();
    println!(
        "This system can support up to {max_processors} processors in {max_memory_regions} memory regions"
    );

    loop {
        let current_processor_id = hw.current_processor_id();
        let current_memory_region_id = hw.current_memory_region_id();

        println!(
            "Thread executing on processor {current_processor_id} in memory region {current_memory_region_id}"
        );

        thread::sleep(Duration::from_secs(1));
    }
}