/* pthread_setspecific.  Generic version.

   Copyright (C) 2002-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library;  if not, see

   <http://www.gnu.org/licenses/>.  */

#include <pthread.h>

#include <pt-internal.h>

int

__pthread_setspecific (pthread_key_t key, const void *value)

{

  struct __pthread *self = _pthread_self ();

  if (key < 0 || key >= __pthread_key_count

      || __pthread_key_destructors[key] == PTHREAD_KEY_INVALID)

    return EINVAL;

  if (key >= self->thread_specifics_size)

    {

      /* Amortize reallocation cost.  */

      int newsize = 2 * key + 1;

      void **new = realloc (self->thread_specifics,

			    newsize * sizeof (new[0]));

      if (new == NULL)

	return ENOMEM;

      memset (&new[self->thread_specifics_size], 0,

	      (newsize - self->thread_specifics_size) * sizeof (new[0]));

      self->thread_specifics = new;

      self->thread_specifics_size = newsize;

    }

  self->thread_specifics[key] = (void *) value;

  return 0;

}

strong_alias (__pthread_setspecific, pthread_setspecific);