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Member "gnuastro-0.9/bootstrapped/tests/test-sleep.c" (17 Apr 2019, 1435 Bytes) of package /linux/privat/gnuastro-0.9.tar.lz:


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    1 /* Test of sleep() function.
    2    Copyright (C) 2007-2019 Free Software Foundation, Inc.
    3 
    4    This program is free software: you can redistribute it and/or modify
    5    it under the terms of the GNU General Public License as published by
    6    the Free Software Foundation; either version 3 of the License, or
    7    (at your option) any later version.
    8 
    9    This program is distributed in the hope that it will be useful,
   10    but WITHOUT ANY WARRANTY; without even the implied warranty of
   11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   12    GNU General Public License for more details.
   13 
   14    You should have received a copy of the GNU General Public License
   15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
   16 
   17 /* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
   18 
   19 #include <config.h>
   20 
   21 #include <unistd.h>
   22 
   23 #include "signature.h"
   24 SIGNATURE_CHECK (sleep, unsigned int, (unsigned int));
   25 
   26 #include <signal.h>
   27 
   28 #include "macros.h"
   29 
   30 #if HAVE_DECL_ALARM
   31 static void
   32 handle_alarm (int sig)
   33 {
   34   if (sig != SIGALRM)
   35     _exit (1);
   36 }
   37 #endif
   38 
   39 int
   40 main (void)
   41 {
   42   ASSERT (sleep (1) <= 1);
   43 
   44   ASSERT (sleep (0) == 0);
   45 
   46 #if HAVE_DECL_ALARM
   47   {
   48     const unsigned int pentecost = 50 * 24 * 60 * 60; /* 50 days.  */
   49     unsigned int remaining;
   50     signal (SIGALRM, handle_alarm);
   51     alarm (1);
   52     remaining = sleep (pentecost);
   53     ASSERT (pentecost - 10 < remaining && remaining <= pentecost);
   54   }
   55 #endif
   56 
   57   return 0;
   58 }