/*

 * Copyright (C) 2010-2012 Free Software Foundation, 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/>

 *

 */

#include "gnutls_int.h"

#include "errors.h"

#include <libtasn1.h>

#include <dh.h>

#include <random.h>

#include <locks.h>

/**

 * gnutls_global_set_mutex:

 * @init: mutex initialization function

 * @deinit: mutex deinitialization function

 * @lock: mutex locking function

 * @unlock: mutex unlocking function

 *

 * With this function you are allowed to override the default mutex

 * locks used in some parts of gnutls and dependent libraries. This function

 * should be used if you have complete control of your program and libraries.

 * Do not call this function from a library, or preferably from any application

 * unless really needed to. GnuTLS will use the appropriate locks for the running

 * system.

 *

 * Note that since the move to implicit initialization of GnuTLS on library

 * load, calling this function will deinitialize the library, and re-initialize

 * it after the new locking functions are set.

 *

 * This function must be called prior to any other gnutls function.

 * 

 * Since: 2.12.0

 **/

void

gnutls_global_set_mutex(mutex_init_func init, mutex_deinit_func deinit,

			mutex_lock_func lock, mutex_unlock_func unlock)

{

int ret;

	if (init == NULL || deinit == NULL || lock == NULL

	    || unlock == NULL)

		return;

	gnutls_global_deinit();

	gnutls_mutex_init = init;

	gnutls_mutex_deinit = deinit;

	gnutls_mutex_lock = lock;

	gnutls_mutex_unlock = unlock;

	ret = gnutls_global_init();

	if (ret < 0)

		_gnutls_debug_log("error in gnutls_global_init(): %s\n", gnutls_strerror(ret));

}