10 ms·

Thanks! > You still need the mutexes because multiple threads are writing to the same variables at the same time I understand that for the "data" for which th

by acqq 6y ago

Thanks! > You still need the mutexes because multiple threads are writing to the same variables at the same time I understand that for the "data" for which the push exists. Do we however need it for res_mutex when the value that we want to update is a single (I guess integer) variable for which atomic add could be performed? Is there something like atomic add?

steveklabnik 6y ago
Oh, duh, yes. one line added, two lines changed, I've left them at their indent levels and left the variable name the same: use std::sync::atomic::{AtomicU32, Ordering}; let res_mutex = AtomicU32::new(0); res_mutex.fetch_add(result, Ordering::SeqCst);