1/* Monotonically increasing wide counters (at least 62 bits).
 2   Copyright (C) 2016-2025 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 */