mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-25 22:40:05 +00:00
35 lines
1.3 KiB
C
35 lines
1.3 KiB
C
/* Copyright (C) 2003-2021 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Jakub Jelinek <jakub@redhat.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
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include "pthreadP.h"
|
|
#include <shlib-compat.h>
|
|
|
|
int
|
|
__pthread_spin_trylock (pthread_spinlock_t *lock)
|
|
{
|
|
return __sync_val_compare_and_swap ((int *) lock, 0, 1) == 0 ? 0 : EBUSY;
|
|
}
|
|
versioned_symbol (libc, __pthread_spin_trylock, pthread_spin_trylock,
|
|
GLIBC_2_34);
|
|
|
|
#if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_2, GLIBC_2_34)
|
|
compat_symbol (libpthread, __pthread_spin_trylock, pthread_spin_trylock,
|
|
GLIBC_2_2);
|
|
#endif
|