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/*
* Copyright (C) 2017 Red Hat, Inc.
*
* Author: Nikos Mavrogiannopoulos
*
* This file is part of GnuTLS.
*
* The GnuTLS 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.
*
* This 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 this program. If not, see <https://www.gnu.org/licenses/>
*
*/
#ifndef GNUTLS_LIB_ATOMIC_H
#define GNUTLS_LIB_ATOMIC_H
#ifdef HAVE_STDATOMIC_H
# include <stdatomic.h>
# define gnutls_atomic_uint_t atomic_uint
# define DEF_ATOMIC_INT(x) atomic_uint x
# define gnutls_atomic_increment(x) (*x)++
# define gnutls_atomic_decrement(x) (*x)--
# define gnutls_atomic_init(x) (*x)=(0)
# define gnutls_atomic_deinit(x)
# define gnutls_atomic_val(x) (*x)
#else
# include "locks.h"
struct gnutls_atomic_uint_st {
void *lock;
unsigned int value;
};
typedef struct gnutls_atomic_uint_st *gnutls_atomic_uint_t;
# define DEF_ATOMIC_INT(x) struct gnutls_atomic_uint_st x
inline static unsigned gnutls_atomic_val(gnutls_atomic_uint_t x)
{
unsigned int t;
gnutls_mutex_lock(&x->lock);
t = x->value;
gnutls_mutex_unlock(&x->lock);
return t;
}
inline static void gnutls_atomic_increment(gnutls_atomic_uint_t x)
{
gnutls_mutex_lock(&x->lock);
x->value++;
gnutls_mutex_unlock(&x->lock);
}
inline static void gnutls_atomic_decrement(gnutls_atomic_uint_t x)
{
gnutls_mutex_lock(&x->lock);
x->value--;
gnutls_mutex_unlock(&x->lock);
}
inline static void gnutls_atomic_init(gnutls_atomic_uint_t x)
{
gnutls_mutex_init(&x->lock);
x->value = 0;
}
inline static void gnutls_atomic_deinit(gnutls_atomic_uint_t x)
{
gnutls_mutex_deinit(&x->lock);
}
#endif
#endif /* GNUTLS_LIB_ATOMIC_H */
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