Операционные системы. Теория и практика. Замятин А.В. - 233 стр.

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int lots_of_threads;

pthread_t a_thread[NUM_THREADS];

void *thread_result;

srand ( (insigned)time(NULL) );

for (lots_of_threads = 0; lots_of_threads < NUM_THREADS;

lots_of_threads++)

{

res = pthread_create (&(a_thread[lots_of_threads]),NULL,

thread_function, (void *)&lots_of_threads);

if (res != 0) {

perror(“Thread creation failed”);

exit(EXIT_FAILURE);

}

sleep(1);

}

printf(“Waiting for threads to finish...\n”);

for (lots_of_threads = NUM_THREADS - 1; lots_of_threads >= 0;

lots_of_threads--)

{

res = pthread_join (a_thread[lots_of_threads],&thread_result);

if (res == 0) printf(“Picked up a thread\n”);

else perror(“pthread_join failed”);

}

printf(“All done\n”);

exit(EXIT_SUCCESS);

}

void *thread_function(void *arg) {

int my_number = *(int *)arg;

int rand_num;

printf (“thread_function is running. Argument was %d\n”,

my_number);

rand_num=1+(int)(9.0*rand()/(RAND_MAX+1.0));