1 /* Spin locks. Mach version.
2 Copyright (C) 2002-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #include <machine-lock.h>
20
21 /* In glibc. */
22 extern void __spin_lock_solid (__spin_lock_t *lock);
23
24 /* Lock the spin lock object LOCK. If the lock is held by another
25 thread spin until it becomes available. */
26 int
_pthread_spin_lock(__spin_lock_t * lock)27 _pthread_spin_lock (__spin_lock_t *lock)
28 {
29 __spin_lock_solid (lock);
30 return 0;
31 }
32