mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 00:31:08 +00:00
32 lines
1.2 KiB
C
32 lines
1.2 KiB
C
|
/* C11 threads call once implementation.
|
||
|
|
Copyright (C) 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 <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);
|
||
|
|
}
|