What are some uses of mutexes? Select all that appliesQuestion 1Answera.To prevent data from being corruptedb.To prevent a certain resource from being accessedc.To allow simultaneous access of a resourced.To give priority to certain processes or tasks
Question
What are some uses of mutexes? Select all that appliesQuestion 1Answera.To prevent data from being corruptedb.To prevent a certain resource from being accessedc.To allow simultaneous access of a resourced.To give priority to certain processes or tasks
Solution
The uses of mutexes include:
a. To prevent data from being corrupted: Mutexes are used in concurrent programming to avoid the problem of data races. This is where two or more threads can access shared data and try to change it at the same time. By using a mutex, only one thread can access the data at a time, preventing corruption.
b. To prevent a certain resource from being accessed: Mutexes can also be used to prevent simultaneous access to a shared resource, such as a file or database. This is useful in situations where a resource cannot be accessed by more than one process or thread at a time.
c. To allow simultaneous access of a resource: This is not a correct use of mutexes. Mutexes are used to prevent simultaneous access to a shared resource, not to allow it.
d. To give priority to certain processes or tasks: While mutexes can be used in conjunction with other mechanisms to give priority to certain tasks, they do not inherently provide this functionality. Their primary function is to ensure mutual exclusion in accessing shared resources.
Similar Questions
A mutex is a simple data structure. It works with code, not data. If a mutex is locked, the other threads will continue. It's only when a thread attempts to ...
Write down why do we need mutexes in preventing race conditions.
Qual è la funzione che tenta di bloccare un mutex e restituisce immediatamente se il mutex è già bloccato in C?Scegli un'alternativa:a. pthread_mutex_trylock()b. pthread_mutex_lock()c. pthread_mutex_timedlock()d. pthread_mutex_wait()
Cosa succede se un thread tenta di sbloccare un mutex che non ha bloccato?Scegli un'alternativa:a. Si verifica un comportamento indefinitob. Il mutex viene sbloccatoc. Il thread termina immediatamented. Il thread entra in deadlock
Qual è il comportamento del seguente codice? #include <stdio.h>#include <pthread.h>pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;void* threadFunc(void* arg) { pthread_mutex_lock(&mutex); printf("Thread is running\n"); pthread_mutex_unlock(&mutex); return NULL;}int main() { pthread_t thread; pthread_create(&thread, NULL, threadFunc, NULL); pthread_mutex_lock(&mutex); printf("Main thread\n"); pthread_mutex_unlock(&mutex); pthread_join(thread, NULL); return 0;}Scegli un'alternativa:a. Stampa "Main thread" seguito da "Thread is running".b. Genera un deadlock.c. Stampa "Thread is running" seguito da "Main thread".d. Stampa "Thread is running" e "Main thread" in ordine casuale.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.