| /* Monotonically increasing wide counters (at least 62 bits). |
| Copyright (C) 2016-2022 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| 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/>. */ |
| |
| #ifndef _BITS_ATOMIC_WIDE_COUNTER_H |
| #define _BITS_ATOMIC_WIDE_COUNTER_H |
| |
| /* Counter that is monotonically increasing (by less than 2**31 per |
| increment), with a single writer, and an arbitrary number of |
| readers. */ |
| typedef union |
| { |
| __extension__ unsigned long long int __value64; |
| struct |
| { |
| unsigned int __low; |
| unsigned int __high; |
| } __value32; |
| } __atomic_wide_counter; |
| |
| #endif /* _BITS_ATOMIC_WIDE_COUNTER_H */ |