1 /* Pthread mutex backoff configuration.
2 Copyright (C) 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 #ifndef _PTHREAD_MUTEX_BACKOFF_H
19 #define _PTHREAD_MUTEX_BACKOFF_H 1
20
21 static inline unsigned int
get_jitter(void)22 get_jitter (void)
23 {
24 /* Arch dependent random jitter, return 0 disables random. */
25 return 0;
26 }
27
28 static inline int
get_next_backoff(int backoff)29 get_next_backoff (int backoff)
30 {
31 /* Next backoff, return 1 disables mutex backoff. */
32 return 1;
33 }
34
35 #endif
36