gdb/testsuite/gdb.threads/print-threads.c

   1 #include <stdio.h>
   2 #include <unistd.h>
   3 #include <stdlib.h>
   4 #include <pthread.h>
   5
   6 void *thread_function(void *arg); /* Pointer to function executed by each thread */
   7
   8 int slow = 0;
   9
  10 #define NUM 5
  11
  12 int main() {
  13     int res;
  14     pthread_t threads[NUM];
  15     void *thread_result;
  16     int args[NUM];
  17     int i;
  18
  19     for (i = 0; i < NUM; i++)
  20       {
  21         args[i] = i;
  22         res = pthread_create(&threads[i], NULL, thread_function, (void *)&args[i]);
  23       }
  24
  25     for (i = 0; i < NUM; i++)
  26       res = pthread_join(threads[i], &thread_result);
  27
  28     printf ("Done\n");
  29
  30     if (slow)
  31       sleep (4);
  32
  33     exit(EXIT_SUCCESS);
  34 }
  35
  36 void *thread_function(void *arg) {
  37     int my_number = *(int *)arg;
  38     int rand_num;
  39
  40     printf ("Print 1, thread %d\n", my_number);
  41     sleep (1);
  42
  43     if (slow)
  44       {
  45         printf ("Print 2, thread %d\n", my_number);
  46         sleep (1);
  47         printf ("Print 3, thread %d\n", my_number);
  48         sleep (1);
  49         printf ("Print 4, thread %d\n", my_number);
  50         sleep (1);
  51         printf ("Print 5, thread %d\n", my_number);
  52         sleep (1);
  53       }
  54
  55     printf("Bye from %d\n", my_number);
  56     pthread_exit(NULL);
  57 }
  58