/* Tests for POSIX timer implementation.   Copyright (C) 2000, 2002, 2003 Free Software Foundation, Inc.   This file is part of the GNU C Library.   Contributed by Kaz Kylheku <kaz@ashi.footprints.net>.   The GNU C Library is free software; you can redistribute it and/or   modify it under the terms of the GNU Lesser General Public License as   published by the Free Software Foundation; either version 2.1 of the   License, or (at your option) any later version.   The GNU C Library is distributed in the hope that it will be useful,   but WITHOUT ANY WARRANTY; without even the implied warranty of   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU   Lesser General Public License for more details.   You should have received a copy of the GNU Lesser General Public   License along with the GNU C Library; see the file COPYING.LIB.  If not,   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,   Boston, MA 02111-1307, USA.  */#include <errno.h>#include <signal.h>#include <stdio.h>#include <time.h>#include <unistd.h>static voidnotify_func1 (union sigval sigval){  puts ("notify_func1");}static voidnotify_func2 (union sigval sigval){  puts ("notify_func2");}static voidsignal_func (int sig){  static const char text[] = "signal_func\n";  signal (sig, signal_func);  write (STDOUT_FILENO, text, sizeof text - 1);}static voidintr_sleep (int sec){  struct timespec ts;  ts.tv_sec = sec;  ts.tv_nsec = 0;  while (nanosleep (&ts, &ts) == -1 && errno == EINTR)    ;}#define ZSIGALRM 14intmain (void){  struct timespec ts;  timer_t timer_sig, timer_thr1, timer_thr2;  int retval;  struct sigevent sigev1 =  {    .sigev_notify = SIGEV_SIGNAL,    .sigev_signo = ZSIGALRM  };  struct sigevent sigev2;  struct itimerspec itimer1 = { { 0, 200000000 }, { 0, 200000000 } };  struct itimerspec itimer2 = { { 0, 100000000 }, { 0, 500000000 } };  struct itimerspec itimer3 = { { 0, 150000000 }, { 0, 300000000 } };  struct itimerspec old;  retval = clock_gettime (CLOCK_REALTIME, &ts);  sigev2.sigev_notify = SIGEV_THREAD;  sigev2.sigev_notify_function = notify_func1;  sigev2.sigev_notify_attributes = NULL;  /* It is unnecessary to do the following but to set a good example     we do it anyhow.  */  sigev2.sigev_value.sival_ptr = NULL;  setvbuf (stdout, 0, _IOLBF, 0);  printf ("clock_gettime returned %d, timespec = { %ld, %ld }\n",	  retval, ts.tv_sec, ts.tv_nsec);  retval = clock_getres (CLOCK_REALTIME, &ts);  printf ("clock_getres returned %d, timespec = { %ld, %ld }\n",	  retval, ts.tv_sec, ts.tv_nsec);  if (timer_create (CLOCK_REALTIME, &sigev1, &timer_sig) != 0)    {      printf ("timer_create for timer_sig failed: %m\n");      exit (1);    }  if (timer_create (CLOCK_REALTIME, &sigev2, &timer_thr1) != 0)    {      printf ("timer_create for timer_thr1 failed: %m\n");      exit (1);    }  sigev2.sigev_notify_function = notify_func2;  if (timer_create (CLOCK_REALTIME, &sigev2, &timer_thr2) != 0)    {      printf ("timer_create for timer_thr2 failed: %m\n");      exit (1);    }  if (timer_settime (timer_thr1, 0, &itimer2, &old) != 0)    {      printf ("timer_settime for timer_thr1 failed: %m\n");      exit (1);    }  if (timer_settime (timer_thr2, 0, &itimer3, &old) != 0)    {      printf ("timer_settime for timer_thr2 failed: %m\n");      exit (1);    }  signal (ZSIGALRM, signal_func);  if (timer_settime (timer_sig, 0, &itimer1, &old) != 0)    {      printf ("timer_settime for timer_sig failed: %m\n");      exit (1);    }  intr_sleep (3);  if (timer_delete (timer_sig) != 0)    {      printf ("timer_delete for timer_sig failed: %m\n");      exit (1);    }  if (timer_delete (timer_thr1) != 0)    {      printf ("timer_delete for timer_thr1 failed: %m\n");      exit (1);    }  intr_sleep (3);  if (timer_delete (timer_thr2) != 0)    {      printf ("timer_delete for timer_thr2 failed: %m\n");      exit (1);    }  return 0;}