nptl/tst-tsd4.c

   1 /* Copyright (C) 2003-2020 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
   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    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <limits.h>
  20 #include <pthread.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <unistd.h>
  24
  25
  26 static pthread_key_t key;
  27
  28
  29 static int rounds;
  30
  31
  32 static void
  33 destr (void *arg)
  34 {
  35   ++rounds;
  36
  37   if (pthread_setspecific (key, (void *) 1l) != 0)
  38     {
  39       puts ("destr: setspecific failed");
  40       exit (1);
  41     }
  42 }
  43
  44
  45 static void *
  46 tf (void *arg)
  47 {
  48   if (pthread_setspecific (key, (void *) 1l) != 0)
  49     {
  50       puts ("tf: setspecific failed");
  51       exit (1);
  52     }
  53
  54   return NULL;
  55 }
  56
  57
  58 /* This test check non-standard behavior.  The standard does not
  59    require that the implementation has to stop calling TSD destructors
  60    when they are set over and over again.  But NPTL does.  */
  61 static int
  62 do_test (void)
  63 {
  64   /* Allocate two keys, both with destructors.  */
  65   if (pthread_key_create (&key, destr) != 0)
  66     {
  67       puts ("key_create failed");
  68       return 1;
  69     }
  70
  71   pthread_t th;
  72   if (pthread_create (&th, NULL, tf, NULL) != 0)
  73     {
  74       puts ("create failed");
  75       return 1;
  76     }
  77
  78   if (pthread_join (th, NULL) != 0)
  79     {
  80       puts ("join failed");
  81       return 1;
  82     }
  83
  84   if (rounds < PTHREAD_DESTRUCTOR_ITERATIONS)
  85     {
  86       printf ("rounds == %d, PTHREAD_DESTRUCTOR_ITERATIONS = %d\n",
  87               rounds, PTHREAD_DESTRUCTOR_ITERATIONS);
  88       return 1;
  89     }
  90
  91   if (pthread_getspecific (key) != NULL)
  92     {
  93       puts ("key data != NULL");
  94       return 1;
  95     }
  96
  97   return 0;
  98 }
  99
 100
 101 #define TEST_FUNCTION do_test ()
 102 #include "../test-skeleton.c"