Module parking_lot::deadlock

[Experimental] Deadlock detection

This feature is optional and can be enabled via the deadlock_detection feature flag.

Example

#[cfg(feature = "deadlock_detection")]
{ // only for #[cfg]
use std::thread;
use std::time::Duration;
use parking_lot::deadlock;

// Create a background thread which checks for deadlocks every 10s
thread::spawn(move || {
    loop {
        thread::sleep(Duration::from_secs(10));
        let deadlocks = deadlock::check_deadlock();
        if deadlocks.is_empty() {
            continue;
        }

        println!("{} deadlocks detected", deadlocks.len());
        for (i, threads) in deadlocks.iter().enumerate() {
            println!("Deadlock #{}", i);
            for t in threads {
                println!("Thread Id {:#?}", t.thread_id());
                println!("{:#?}", t.backtrace());
            }
        }
    }
});
} // only for #[cfg]

Functions

check_deadlock

Returns all deadlocks detected since the last call. Each cycle consist of a vector of DeadlockedThread.