linuxthreads/Examples/ex7.c

   1 /* This is a test of the special shutdown that occurs
   2    when all threads, including the main one, call
   3    pthread_exit(). It demonstrates that atexit
   4    handlers are properly called, and that the
   5    output is properly flushed even when stdout is
   6    redirected to a file, and therefore fully buffered. */
   7
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <pthread.h>
  11
  12 #define NTHREADS 20             /* number of threads */
  13
  14 static void *
  15 thread (void *arg)
  16 {
  17   printf ("thread terminating\n");
  18   return 0;
  19 }
  20
  21 static void
  22 cleanup (void)
  23 {
  24   printf ("atexit handler called\n");
  25 }
  26
  27 int
  28 main (void)
  29 {
  30   int i;
  31
  32   atexit (cleanup);
  33
  34   for (i = 0; i < NTHREADS; i++)
  35     {
  36       pthread_t id;
  37       if (pthread_create (&id, 0, thread, 0) != 0)
  38         {
  39           fprintf (stderr, "pthread_create failed\n");
  40           abort ();
  41         }
  42     }
  43
  44   pthread_exit (0);
  45 }