regress/lib/libpthread/sleep1/sleep1.c

   1 /*      $NetBSD: sleep1.c,v 1.2 2005/08/29 18:52:16 drochner Exp $      */
   2
   3 #include <signal.h>
   4 #include <stdio.h>
   5 #include <pthread.h>
   6 #include <unistd.h>
   7
   8 #include <sys/time.h>
   9
  10 void *threadfunc(void *);
  11 void handler(int);
  12
  13 #define LONGTIME 2000000000
  14
  15 int
  16 main(void)
  17 {
  18         pthread_t thread;
  19         struct itimerval it;
  20         struct sigaction act;
  21         sigset_t mtsm;
  22
  23         printf("Testing sleeps unreasonably far into the future.\n");
  24
  25         act.sa_handler = handler;
  26         sigemptyset(&act.sa_mask);
  27         act.sa_flags = 0;
  28         sigaction(SIGALRM, &act, NULL);
  29
  30         pthread_create(&thread, NULL, threadfunc, NULL);
  31
  32         /* make sure the signal is delivered to the child thread */
  33         sigemptyset(&mtsm);
  34         sigaddset(&mtsm, SIGALRM);
  35         pthread_sigmask(SIG_BLOCK, &mtsm, 0);
  36
  37         timerclear(&it.it_interval);
  38         timerclear(&it.it_value);
  39         it.it_value.tv_sec = 1;
  40         setitimer(ITIMER_REAL, &it, NULL);
  41
  42         pthread_join(thread, NULL);
  43
  44         printf("Passed.\n");
  45
  46         return 0;
  47 }
  48
  49 void *
  50 threadfunc(void *arg)
  51 {
  52         sleep(LONGTIME);
  53         return NULL;
  54 }
  55
  56 void
  57 handler(int sig)
  58 {
  59         /*
  60          * Nothing to do; invoking the handler is enough to interrupt
  61          * the sleep.
  62          */
  63 }