mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
56 lines
1.6 KiB
56 lines
1.6 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
|
/* |
|
* Generic implementation of 64-bit atomics using spinlocks, |
|
* useful on processors that don't have 64-bit atomic instructions. |
|
* |
|
* Copyright © 2009 Paul Mackerras, IBM Corp. <[email protected]> |
|
*/ |
|
#ifndef _ASM_GENERIC_ATOMIC64_H |
|
#define _ASM_GENERIC_ATOMIC64_H |
|
#include <linux/types.h> |
|
|
|
typedef struct { |
|
s64 counter; |
|
} atomic64_t; |
|
|
|
#define ATOMIC64_INIT(i) { (i) } |
|
|
|
extern s64 atomic64_read(const atomic64_t *v); |
|
extern void atomic64_set(atomic64_t *v, s64 i); |
|
|
|
#define atomic64_set_release(v, i) atomic64_set((v), (i)) |
|
|
|
#define ATOMIC64_OP(op) \ |
|
extern void atomic64_##op(s64 a, atomic64_t *v); |
|
|
|
#define ATOMIC64_OP_RETURN(op) \ |
|
extern s64 atomic64_##op##_return(s64 a, atomic64_t *v); |
|
|
|
#define ATOMIC64_FETCH_OP(op) \ |
|
extern s64 atomic64_fetch_##op(s64 a, atomic64_t *v); |
|
|
|
#define ATOMIC64_OPS(op) ATOMIC64_OP(op) ATOMIC64_OP_RETURN(op) ATOMIC64_FETCH_OP(op) |
|
|
|
ATOMIC64_OPS(add) |
|
ATOMIC64_OPS(sub) |
|
|
|
#undef ATOMIC64_OPS |
|
#define ATOMIC64_OPS(op) ATOMIC64_OP(op) ATOMIC64_FETCH_OP(op) |
|
|
|
ATOMIC64_OPS(and) |
|
ATOMIC64_OPS(or) |
|
ATOMIC64_OPS(xor) |
|
|
|
#undef ATOMIC64_OPS |
|
#undef ATOMIC64_FETCH_OP |
|
#undef ATOMIC64_OP_RETURN |
|
#undef ATOMIC64_OP |
|
|
|
extern s64 atomic64_dec_if_positive(atomic64_t *v); |
|
#define atomic64_dec_if_positive atomic64_dec_if_positive |
|
extern s64 atomic64_cmpxchg(atomic64_t *v, s64 o, s64 n); |
|
extern s64 atomic64_xchg(atomic64_t *v, s64 new); |
|
extern s64 atomic64_fetch_add_unless(atomic64_t *v, s64 a, s64 u); |
|
#define atomic64_fetch_add_unless atomic64_fetch_add_unless |
|
|
|
#endif /* _ASM_GENERIC_ATOMIC64_H */
|
|
|