sysdeps/pthread/tst-basic5.c

   1 /* Copyright (C) 2003-2023 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library 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 GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <errno.h>
  19 #include <pthread.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22
  23
  24
  25 int
  26 do_test (void)
  27 {
  28   int c = pthread_getconcurrency ();
  29   if (c != 0)
  30     {
  31       puts ("initial concurrencylevel wrong");
  32       exit (1);
  33     }
  34
  35   if (pthread_setconcurrency (1) != 0)
  36     {
  37       puts ("setconcurrency failed");
  38       exit (1);
  39     }
  40
  41   c = pthread_getconcurrency ();
  42   if (c != 1)
  43     {
  44       puts ("getconcurrency didn't return the value previous set");
  45       exit (1);
  46     }
  47
  48   int e = pthread_setconcurrency (-1);
  49   if (e == 0)
  50     {
  51       puts ("setconcurrency of negative value didn't failed");
  52       exit (1);
  53     }
  54   if (e != EINVAL)
  55     {
  56       puts ("setconcurrency didn't return EINVAL for negative value");
  57       exit (1);
  58     }
  59
  60   c = pthread_getconcurrency ();
  61   if (c != 1)
  62     {
  63       puts ("invalid getconcurrency changed level");
  64       exit (1);
  65     }
  66
  67   return 0;
  68 }
  69
  70
  71 #define TEST_FUNCTION do_test ()
  72 #include "../test-skeleton.c"