nptl/tst-sysconf.c

   1 /* Copyright (C) 2002-2017 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <pthread.h>
  20 #include <stdio.h>
  21 #include <unistd.h>
  22
  23
  24 static int
  25 do_test (void)
  26 {
  27   puts ("We expect no limits");
  28   /* We have no fixed limit on the number of threads.  Make sure the
  29      headers tell the right story.  */
  30 #ifdef PTHREAD_THREADS_MAX
  31   printf ("Header report maximum number of threads = %lu\n",
  32           (unsigned long int) PTHREAD_THREADS_MAX);
  33   return 1;
  34 #else
  35   long int r = sysconf (_SC_THREAD_THREADS_MAX);
  36   if (r != -1)
  37     {
  38       printf ("sysconf(_SC_THREAD_THREADS_MAX) return %ld\n", r);
  39       return 1;
  40     }
  41 #endif
  42
  43   return 0;
  44 }
  45
  46 #define TEST_FUNCTION do_test ()
  47 #include "../test-skeleton.c"