A combination of three or more tones sounded simultaneously:

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A cоmbinаtiоn оf three or more tones sounded simultаneously:

Cоnsider а functiоn оf the form do_the_tаsk (mutex_t m1, mutext_t m2) In this function, both locks m1 аnd m2 should be grabbed (assume m1 and m2 can’t be the same lock) before entering the critical section. Assume there are two mutexes L1 and L2 and multiple threads are concurrently calling either do_the_task(&L1, &L2) or do_the_task(&L2, &L1) Suppose Bob and Alice come up with two solutions to grab the two locks. Bob's code looks like If (m1 > m2) {pthread_mutex_lock(m1);pthread_mutex_lock(m2);} else {pthread_mutex_lock(m2);pthread_mutex_lock(m1);} Alice's code looks like // prevention is a mutex globally shared by all the threadspthread_mutex_lock(prevention);pthread_mutex_lock(m1);pthread_mutex_lock(m2);pthread_mutex_unlock(prevention);