sysdeps/pthread/tst-tsd5.c

   1 /* Copyright (C) 2004-2024 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 <pthread.h>
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21
  22
  23 static pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
  24
  25
  26 static void
  27 cl (void *p)
  28 {
  29   pthread_mutex_unlock (&m);
  30 }
  31
  32
  33 static void *
  34 tf (void *arg)
  35 {
  36   if (pthread_mutex_lock (&m) != 0)
  37     {
  38       puts ("2nd mutex_lock failed");
  39       exit (1);
  40     }
  41
  42   exit (0);
  43 }
  44
  45
  46 static int
  47 do_test (void)
  48 {
  49   pthread_key_t k;
  50   if (pthread_key_create (&k, cl) != 0)
  51     {
  52       puts ("key_create failed");
  53       return 1;
  54     }
  55   /* Use an arbitrary but valid pointer as the value.  */
  56   if (pthread_setspecific (k, (void *) &k) != 0)
  57     {
  58       puts ("setspecific failed");
  59       return 1;
  60     }
  61
  62   if (pthread_mutex_lock (&m) != 0)
  63     {
  64       puts ("1st mutex_lock failed");
  65       return 1;
  66     }
  67
  68   pthread_t th;
  69   if (pthread_create (&th, NULL, tf, NULL) != 0)
  70     {
  71       puts ("create failed");
  72       return 1;
  73     }
  74
  75   pthread_exit (NULL);
  76 }
  77
  78
  79 #define TEST_FUNCTION do_test ()
  80 #include "../test-skeleton.c"