Millised meetodid võimaldavad vältida vastastikust lukustamist mutexide kasutamisel samas funktsioonis?

To prevent mutual blocking (deadlock) when using mutexes within the same function in Go, you can use the following methods:

• Avoid re-acquiring the same mutex: if the mutex is already locked, do not attempt to lock it again in the same thread.
• Use sync.RWMutex instead of sync.Mutex, if only read operations are possible, to reduce locking.
• Organize the code so that mutex acquisition occurs in the same order, if multiple mutexes are acquired.
• Use TryLock (via external libraries or your own implementation), to attempt to acquire the mutex without blocking, and handle the situation differently if it fails.

Example of safe mutex usage:

var mu sync.Mutex

func safeFunction() {
    mu.Lock()
    defer mu.Unlock()
    // critical section
}

It is important not to call mu.Lock() again in the same goroutine without Unlock(), otherwise deadlock may occur.