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