linuxthreads/Examples/ex12.c

   1 /* Variant of ex6, but this time we use pthread_exit ().  */
   2 #include <errno.h>
   3 #include <stdio.h>
   4 #include <string.h>
   5 #include <pthread.h>
   6 #include <unistd.h>
   7
   8 static void *
   9 __attribute__ ((noreturn))
  10 test_thread (void *v_param)
  11 {
  12   pthread_exit (NULL);
  13 }
  14
  15 int
  16 main (void)
  17 {
  18   unsigned long count;
  19
  20   setvbuf (stdout, NULL, _IONBF, 0);
  21
  22   for (count = 0; count < 2000; ++count)
  23     {
  24       pthread_t thread;
  25       int status;
  26
  27       status = pthread_create (&thread, NULL, test_thread, NULL);
  28       if (status != 0)
  29         {
  30           printf ("status = %d, count = %lu: %s\n", status, count,
  31                   strerror (errno));
  32           return 1;
  33         }
  34       else
  35         {
  36           printf ("count = %lu\n", count);
  37         }
  38       /* pthread_detach (thread); */
  39       if (pthread_join (thread, NULL) != 0)
  40         {
  41           printf ("join failed, count %lu\n", count);
  42           return 2;
  43         }
  44       usleep (10);
  45     }
  46   return 0;
  47 }