xfsprogs/include/atomic.h

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2022-06-08 15:11:27 +08:00
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2011 RedHat, Inc.
* All Rights Reserved.
*/
#ifndef __ATOMIC_H__
#define __ATOMIC_H__
/*
* Warning: These are not really atomic at all. They are wrappers around the
* kernel atomic variable interface. If we do need these variables to be atomic
* (due to multithreading of the code that uses them) we need to add some
* pthreads magic here.
*/
typedef int32_t atomic_t;
typedef int64_t atomic64_t;
#define atomic_inc_return(x) (++(*(x)))
#define atomic_dec_return(x) (--(*(x)))
#define atomic64_read(x) *(x)
#define atomic64_set(x, v) (*(x) = v)
#endif /* __ATOMIC_H__ */