Q4a. Explain a major problem with the semaphore-based implementation of the producerand consumer which is shown below1 void *producer (void *arg) {int i;for (i = 0; i < loops; i++) {sem_wait (&mutex);sem_wait (&empty);put(i);456AWNT235678910111213141516171819202122}}Csem_post (&full);sem_post (&mutex);void *consumer (void *arg) {int i;for (i = 0; i < loops; i++) {sem_wait (&mutex);sem_wait (&full);int tmp= get ();sem_post(&empty);sem_post (&mutex);printf("%d\n", tmp);b. How would you fix the problem?

The producer-consumer problem is a classic synchronization challenge in concurrent program, where…

123 2 3 4 5 67 7 8 9 10 11 12 13 14 and consumer which is shown below void *producer (void *arg) { int i; for (i=0; i< loops; i++) { sem_wait (&mutex); sem_wait (&empty); put(i); } } sem_post (&full); sem_post (&mutex); void *consumer (void *arg) { int i; for (i = 0; i < loops; i++) {

123 2 3 4 5 67 7 8 9 10 11 12 13 14 and consumer which is shown below void producer (void arg) { int i; for (i=0; i< loops; i++) { sem_wait (&mutex); sem_wait (&empty); put(i); } } sem_post (&full); sem_post (&mutex); void consumer (void arg) { int i; for (i = 0; i < loops; i++) {

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Computational Systems

The computation systems can be defined as the systems that are capable of solving a problem that includes calculations either mathematical or logical, and are able to produce the result as an output. For example, a simple calculator that is given a set of numbers and operators as input and produces the result as an output can be defined as a computational system. The above example is a simple illustration only, the computational systems range from simple devices to complex devices such as the systems that control the SpaceX companies, Starlink satellites which are being quite recently seen in the skies at many places globally.

Question

Q4
a. Explain a major problem with the semaphore-based implementation of the producer
and consumer which is shown below
1 void *producer (void *arg) {
int i;
for (i = 0; i < loops; i++) {
sem_wait (&mutex);
sem_wait (&empty);
put(i);
456AWNT
2
3
5
6
7
8
9
10
11
12
13
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15
16
17
18
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22
}
}
C
sem_post (&full);
sem_post (&mutex);
void *consumer (void *arg) {
int i;
for (i = 0; i < loops; i++) {
sem_wait (&mutex);
sem_wait (&full);
int tmp= get ();
sem_post(&empty);
sem_post (&mutex);
printf("%d\n", tmp);
b. How would you fix the problem?

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