test/pthread/setname/pthread_setname.c

   1 #include <err.h>
   2 #include <pthread.h>
   3 #include <pthread_np.h>
   4 #include <stdlib.h>
   5 #include <string.h>
   6 #include <unistd.h>
   7
   8 static void *
   9 setselfname(void *arg __unused)
  10 {
  11         pthread_set_name_np(pthread_self(), __func__);
  12         pause();
  13         return NULL;
  14 }
  15
  16 static void *
  17 waitname(void *arg __unused)
  18 {
  19         pause();
  20         return NULL;
  21 }
  22
  23 static void *
  24 resetname(void *arg __unused)
  25 {
  26         pthread_set_name_np(pthread_self(), __func__);
  27         sleep(10);
  28         pthread_set_name_np(pthread_self(), NULL);
  29         pause();
  30         return NULL;
  31 }
  32
  33 int
  34 main(void)
  35 {
  36         pthread_t tid1, tid2, tid3;
  37         char longname[256];
  38         int error;
  39
  40         error = pthread_create(&tid1, NULL, setselfname, NULL);
  41         if (error)
  42                 errc(1, error, "pthread_create(setselfname) failed");
  43
  44         error = pthread_create(&tid2, NULL, waitname, NULL);
  45         if (error)
  46                 errc(1, error, "pthread_create(waitname) failed");
  47         pthread_set_name_np(tid2, "waitname");
  48
  49         error = pthread_create(&tid3, NULL, resetname, NULL);
  50         if (error)
  51                 errc(1, error, "pthread_create(resetname) failed");
  52
  53         memset(longname, 'x', sizeof(longname));
  54         longname[sizeof(longname) - 1] = '\0';
  55         pthread_set_name_np(pthread_self(), longname);
  56
  57         pause();
  58         exit(0);
  59 }