1  /* Test Thread-Specific Data.
       2     Copyright (C) 2000-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       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  #define _GNU_SOURCE
      20  
      21  #include <pthread.h>
      22  #include <assert.h>
      23  #include <stdio.h>
      24  #include <error.h>
      25  #include <errno.h>
      26  
      27  #define THREADS 10
      28  #define KEYS 400
      29  
      30  pthread_key_t key[KEYS];
      31  
      32  void *
      33  thr (void *arg)
      34  {
      35    error_t err;
      36    int i;
      37  
      38    for (i = 0; i < KEYS; i++)
      39      {
      40        printf ("pthread_getspecific(%d).\n", key[i]);
      41        assert (pthread_getspecific (key[i]) == NULL);
      42        printf ("pthread_setspecific(%d, %d).\n", key[i], pthread_self ());
      43        err = pthread_setspecific (key[i], (void *) pthread_self ());
      44        printf ("pthread_setspecific(%d, %d) => %d.\n", key[i], pthread_self (),
      45  	      err);
      46        assert_perror (err);
      47      }
      48  
      49    return 0;
      50  }
      51  
      52  int
      53  main (int argc, char **argv)
      54  {
      55    error_t err;
      56    int i;
      57    pthread_t tid[THREADS];
      58  
      59    void des (void *val)
      60    {
      61      assert ((pthread_t) val == pthread_self ());
      62    }
      63  
      64    assert (pthread_getspecific ((pthread_key_t) 0) == NULL);
      65    assert (pthread_setspecific ((pthread_key_t) 0, (void *) 0x1) == EINVAL);
      66  
      67    for (i = 0; i < KEYS; i++)
      68      err = pthread_key_create (&key[i], des);
      69  
      70    for (i = 0; i < THREADS; i++)
      71      {
      72        err = pthread_create (&tid[i], 0, thr, 0);
      73        if (err)
      74  	error (1, err, "pthread_create (%d)", i);
      75      }
      76  
      77    for (i = 0; i < THREADS; i++)
      78      {
      79        void *ret;
      80  
      81        err = pthread_join (tid[i], &ret);
      82        if (err)
      83  	error (1, err, "pthread_join");
      84  
      85        assert (ret == 0);
      86      }
      87  
      88    return 0;
      89  }