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/* Copyright 2002,2006,2008,2018
Free Software Foundation, Inc.
This file is part of Guile.
Guile 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 3 of the License, or
(at your option) any later version.
Guile 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 Guile. If not, see
<https://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdlib.h>
#include "libguile/scmconfig.h"
#if SCM_USE_NULL_THREADS
#include "null-threads.h"
static scm_i_pthread_key_t *all_keys = NULL;
static void
destroy_keys (void)
{
scm_i_pthread_key_t *key;
int again;
do {
again = 0;
for (key = all_keys; key; key = key->next)
if (key->value && key->destr_func)
{
void *v = key->value;
key->value = NULL;
key->destr_func (v);
again = 1;
}
} while (again);
}
int
scm_i_pthread_key_create (scm_i_pthread_key_t *key,
void (*destr_func) (void *))
{
if (all_keys == NULL)
atexit (destroy_keys);
key->next = all_keys;
all_keys = key;
key->value = NULL;
key->destr_func = destr_func;
return 0;
}
#endif /* SCM_USE_NULL_THREADS */
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