Question: 1#include 2 #include 3 4 int value = 0; 5 void *runner(void *param); /* the thread */ 6 7 int main(int argc, char *argv[]) 8
1#include
2 #include
3 4 int value = 0;
5 void *runner(void *param); /* the thread */
6
7 int main(int argc, char *argv[])
8 {
9 pthread_t tid; /* the thread identifier */
10 pthread_attr_t attr; /* set of attributes for the thread */
11 int pid;
12
13 value = value + 2;
14
15 pid = fork();
16
17 if(pid == 0) { /* child process */
18 pthread_attr_init(&attr);
19 pthread_create(&tid,&attr,runner,argv[1]);
20 pthread_join(tid,NULL);
21 printf("CHILD: value = %d", value); /* LINE C */
22 }
23 else if (pid > 0) { /* parent process */
24 wait(NULL);
25 printf("PARENT: value = %d", value); /* LINE P */
26 }
27 }
28
29 void *runner(void *param) {
30 value = value + 6;
31 pthread_exit(0);
32 }
The above program uses the Pthreads API. What would be the output from the program at LINE C and LINE P (10 points)? Explain your answer (15 points)
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