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"