Process vs. Thread (35 points): What is the address space of a process (5 points)?

What part of the address space of a process are shared by all threads in the process (5

points)?

#include

#include

int value = 0;

void *runner(void *param); /* the thread */

int main(int argc, char *argv[])

{

pthread_t tid; /* the thread identifier */

pthread_attr_t attr; /* set of attributes for the thread */

int pid;

value = value + 2;

pid = fork();

if(pid == 0) { /* child process */

pthread_attr_init(&attr);

pthread_create(&tid,&attr,runner,argv[1]);

pthread_join(tid,NULL);

printf("CHILD: value = %d", value); /* LINE C */

}

else if (pid > 0) { /* parent process */

wait(NULL);

printf("PARENT: value = %d", value); /* LINE P */

}

}

void *runner(void *param) {

value = value + 6;

pthread_exit(0);

}

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).