1/* Monotonically increasing wide counters (at least 62 bits). 
2 Copyright (C) 2016-2022 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#ifndef _BITS_ATOMIC_WIDE_COUNTER_H 
20#define _BITS_ATOMIC_WIDE_COUNTER_H 
21 
22/* Counter that is monotonically increasing (by less than 2**31 per 
23 increment), with a single writer, and an arbitrary number of 
24 readers. */ 
25typedef union 
26{ 
27 __extension__ unsigned long long int __value64; 
28 struct 
29 { 
30 unsigned int __low; 
31 unsigned int __high; 
32 } __value32; 
33} __atomic_wide_counter; 
34 
35#endif /* _BITS_ATOMIC_WIDE_COUNTER_H */ 
36