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/* C11 threads call once implementation.
Copyright (C) 2018-2019 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
<https://www.gnu.org/licenses/>. */
#include <stdalign.h>
#include "thrd_priv.h"
void
call_once (once_flag *flag, void (*func)(void))
{
_Static_assert (sizeof (once_flag) == sizeof (pthread_once_t),
"sizeof (once_flag) != sizeof (pthread_once_t)");
_Static_assert (alignof (once_flag) == alignof (pthread_once_t),
"alignof (once_flag) != alignof (pthread_once_t)");
__pthread_once (&flag->__data, func);
}
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