| #include <stdio.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <pthread.h> |
| |
| void *thread_function(void *arg); /* Pointer to function executed by each thread */ |
| |
| int slow = 0; |
| |
| #define NUM 5 |
| |
| int main() { |
| int res; |
| pthread_t threads[NUM]; |
| void *thread_result; |
| int args[NUM]; |
| int i; |
| |
| for (i = 0; i < NUM; i++) |
| { |
| args[i] = i; |
| res = pthread_create(&threads[i], NULL, thread_function, (void *)&args[i]); |
| } |
| |
| for (i = 0; i < NUM; i++) |
| res = pthread_join(threads[i], &thread_result); |
| |
| printf ("Done\n"); |
| |
| if (slow) |
| sleep (4); |
| |
| exit(EXIT_SUCCESS); |
| } |
| |
| void *thread_function(void *arg) { |
| int my_number = *(int *)arg; |
| int rand_num; |
| |
| printf ("Print 1, thread %d\n", my_number); |
| sleep (1); |
| |
| if (slow) |
| { |
| printf ("Print 2, thread %d\n", my_number); |
| sleep (1); |
| printf ("Print 3, thread %d\n", my_number); |
| sleep (1); |
| printf ("Print 4, thread %d\n", my_number); |
| sleep (1); |
| printf ("Print 5, thread %d\n", my_number); |
| sleep (1); |
| } |
| |
| printf("Bye from %d\n", my_number); |
| pthread_exit(NULL); |
| } |
| |