mirror of
https://sourceware.org/git/glibc.git
synced 2024-09-20 00:19:57 +00:00
04277e02d7
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
32 lines
1.2 KiB
C
32 lines
1.2 KiB
C
/* pthread_spin_unlock -- unlock a spin lock. Generic version.
|
|
Copyright (C) 2003-2019 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Paul Mackerras <paulus@au.ibm.com>, 2003.
|
|
|
|
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 "pthreadP.h"
|
|
#include <atomic.h>
|
|
|
|
int
|
|
pthread_spin_unlock (pthread_spinlock_t *lock)
|
|
{
|
|
/* The atomic_store_release synchronizes-with the atomic_exchange_acquire
|
|
or atomic_compare_exchange_weak_acquire in pthread_spin_lock /
|
|
pthread_spin_trylock. */
|
|
atomic_store_release (lock, 0);
|
|
return 0;
|
|
}
|