rustHow to count threads in Rust?

Threads in Rust can be counted using the thread::active_count() function from the std::thread module. This function returns the number of currently active threads in the current thread's thread pool.

use std::thread;

fn main() {
    let thread_count = thread::active_count();
    println!("Number of active threads: {}", thread_count);
}

Output example

Number of active threads: 1

The code above does the following:

1. Imports the std::thread module with use std::thread;
2. Calls the thread::active_count() function to get the number of active threads
3. Prints the number of active threads with println!

Helpful links

• std::thread

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