Ticket #6707: test-sleep.c

/* -*- buffer-read-only: t -*- vi: set ro: */
/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
/* Test of sleep() function.
   Copyright (C) 2007-2010 Free Software Foundation, Inc.

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program 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 General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */

#include <unistd.h>

#include <stdio.h>
#include <stdlib.h>
#include <signal.h>

static void
handle_alarm (int sig)
{
  if (sig != SIGALRM)
    _exit (1);
}

#define ASSERT(expr) \
  do                                         \
    {                                        \
      if (!(expr))                               \
        {                                    \
          fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
          abort ();                              \
        }                                    \
    }                                        \
  while (0)

int
main (void)
{
  ASSERT(sleep (1) <= 1);
  ASSERT(sleep (0) == 0);
  {
    const unsigned int pentecost = 50 * 24 * 60 * 60; /* 50 days.  */
    unsigned int remaining;
    signal (SIGALRM, handle_alarm);
    alarm (1);
    remaining = sleep (pentecost);
    printf("pentecost=%d, remaining = %d \n", pentecost, remaining);
    ASSERT(pentecost - 10 < remaining && remaining <= pentecost);
  }
  return 0;
}