diff options
Diffstat (limited to 'c_src/include/linux/atomic.h')
-rw-r--r-- | c_src/include/linux/atomic.h | 349 |
1 files changed, 0 insertions, 349 deletions
diff --git a/c_src/include/linux/atomic.h b/c_src/include/linux/atomic.h deleted file mode 100644 index 5313f850..00000000 --- a/c_src/include/linux/atomic.h +++ /dev/null @@ -1,349 +0,0 @@ -#ifndef __TOOLS_LINUX_ATOMIC_H -#define __TOOLS_LINUX_ATOMIC_H - -#include <linux/compiler.h> -#include <linux/types.h> - -typedef struct { - int counter; -} atomic_t; - -typedef struct { - long counter; -} atomic_long_t; - -typedef struct { - u64 counter; -} atomic64_t; - -#ifndef C11_ATOMICS - -#include <urcu/uatomic.h> - -#if (CAA_BITS_PER_LONG != 64) -#define ATOMIC64_SPINLOCK -#endif - -#define __ATOMIC_READ(p) uatomic_read(p) -#define __ATOMIC_SET(p, v) uatomic_set(p, v) -#define __ATOMIC_ADD_RETURN(v, p) uatomic_add_return(p, v) -#define __ATOMIC_SUB_RETURN(v, p) uatomic_sub_return(p, v) -#define __ATOMIC_ADD(v, p) uatomic_add(p, v) -#define __ATOMIC_SUB(v, p) uatomic_sub(p, v) -#define __ATOMIC_INC(p) uatomic_inc(p) -#define __ATOMIC_DEC(p) uatomic_dec(p) -#define __ATOMIC_AND(v, p) uatomic_and(p, v) -#define __ATOMIC_OR(v, p) uatomic_or(p, v) - -#define xchg(p, v) uatomic_xchg(p, v) -#define xchg_acquire(p, v) uatomic_xchg(p, v) -#define cmpxchg(p, old, new) uatomic_cmpxchg(p, old, new) -#define cmpxchg_acquire(p, old, new) uatomic_cmpxchg(p, old, new) -#define cmpxchg_release(p, old, new) uatomic_cmpxchg(p, old, new) - -#define smp_mb__before_atomic() cmm_smp_mb__before_uatomic_add() -#define smp_mb__after_atomic() cmm_smp_mb__after_uatomic_add() -#define smp_wmb() cmm_smp_wmb() -#define smp_rmb() cmm_smp_rmb() -#define smp_mb() cmm_smp_mb() -#define smp_read_barrier_depends() cmm_smp_read_barrier_depends() -#define smp_acquire__after_ctrl_dep() cmm_smp_mb() - -#else /* C11_ATOMICS */ - -#define __ATOMIC_READ(p) __atomic_load_n(p, __ATOMIC_RELAXED) -#define __ATOMIC_SET(p, v) __atomic_store_n(p, v, __ATOMIC_RELAXED) -#define __ATOMIC_ADD_RETURN(v, p) __atomic_add_fetch(p, v, __ATOMIC_RELAXED) -#define __ATOMIC_ADD_RETURN_RELEASE(v, p) \ - __atomic_add_fetch(p, v, __ATOMIC_RELEASE) -#define __ATOMIC_SUB_RETURN(v, p) __atomic_sub_fetch(p, v, __ATOMIC_RELAXED) -#define __ATOMIC_SUB_RETURN_RELEASE(v, p) \ - __atomic_sub_fetch(p, v, __ATOMIC_RELEASE) -#define __ATOMIC_AND(p) __atomic_and_fetch(p, v, __ATOMIC_RELAXED) -#define __ATOMIC_OR(p) __atomic_or_fetch(p, v, __ATOMIC_RELAXED) - -#define xchg(p, v) __atomic_exchange_n(p, v, __ATOMIC_SEQ_CST) -#define xchg_acquire(p, v) __atomic_exchange_n(p, v, __ATOMIC_ACQUIRE) - -#define cmpxchg(p, old, new) \ -({ \ - typeof(*(p)) __old = (old); \ - \ - __atomic_compare_exchange_n((p), &__old, new, false, \ - __ATOMIC_SEQ_CST, \ - __ATOMIC_SEQ_CST); \ - __old; \ -}) - -#define cmpxchg_acquire(p, old, new) \ -({ \ - typeof(*(p)) __old = (old); \ - \ - __atomic_compare_exchange_n((p), &__old, new, false, \ - __ATOMIC_ACQUIRE, \ - __ATOMIC_ACQUIRE); \ - __old; \ -}) - -#define cmpxchg_release(p, old, new) \ -({ \ - typeof(*(p)) __old = (old); \ - \ - __atomic_compare_exchange_n((p), &__old, new, false, \ - __ATOMIC_RELEASE, \ - __ATOMIC_RELEASE); \ - __old; \ -}) - -#define smp_mb__before_atomic() __atomic_thread_fence(__ATOMIC_SEQ_CST) -#define smp_mb__after_atomic() __atomic_thread_fence(__ATOMIC_SEQ_CST) -#define smp_wmb() __atomic_thread_fence(__ATOMIC_SEQ_CST) -#define smp_rmb() __atomic_thread_fence(__ATOMIC_SEQ_CST) -#define smp_mb() __atomic_thread_fence(__ATOMIC_SEQ_CST) -#define smp_read_barrier_depends() - -#endif - -#define smp_store_mb(var, value) do { WRITE_ONCE(var, value); smp_mb(); } while (0) - -#define smp_load_acquire(p) \ -({ \ - typeof(*p) ___p1 = READ_ONCE(*p); \ - smp_mb(); \ - ___p1; \ -}) - -#define smp_store_release(p, v) \ -do { \ - smp_mb(); \ - WRITE_ONCE(*p, v); \ -} while (0) - -/* atomic interface: */ - -#ifndef __ATOMIC_ADD -#define __ATOMIC_ADD(i, v) __ATOMIC_ADD_RETURN(i, v) -#endif - -#ifndef __ATOMIC_ADD_RETURN_RELEASE -#define __ATOMIC_ADD_RETURN_RELEASE(i, v) \ - ({ smp_mb__before_atomic(); __ATOMIC_ADD_RETURN(i, v); }) -#endif - -#ifndef __ATOMIC_SUB_RETURN_RELEASE -#define __ATOMIC_SUB_RETURN_RELEASE(i, v) \ - ({ smp_mb__before_atomic(); __ATOMIC_SUB_RETURN(i, v); }) -#endif - -#ifndef __ATOMIC_SUB -#define __ATOMIC_SUB(i, v) __ATOMIC_SUB_RETURN(i, v) -#endif - -#ifndef __ATOMIC_INC_RETURN -#define __ATOMIC_INC_RETURN(v) __ATOMIC_ADD_RETURN(1, v) -#endif - -#ifndef __ATOMIC_DEC_RETURN -#define __ATOMIC_DEC_RETURN(v) __ATOMIC_SUB_RETURN(1, v) -#endif - -#ifndef __ATOMIC_INC -#define __ATOMIC_INC(v) __ATOMIC_ADD(1, v) -#endif - -#ifndef __ATOMIC_DEC -#define __ATOMIC_DEC(v) __ATOMIC_SUB(1, v) -#endif - -#define DEF_ATOMIC_OPS(a_type, i_type) \ -static inline i_type a_type##_read(const a_type##_t *v) \ -{ \ - return __ATOMIC_READ(&v->counter); \ -} \ - \ -static inline i_type a_type##_read_acquire(const a_type##_t *v) \ -{ \ - i_type ret = __ATOMIC_READ(&v->counter); \ - smp_mb__after_atomic(); \ - return ret; \ -} \ - \ -static inline void a_type##_set(a_type##_t *v, i_type i) \ -{ \ - return __ATOMIC_SET(&v->counter, i); \ -} \ - \ -static inline i_type a_type##_add_return(i_type i, a_type##_t *v) \ -{ \ - return __ATOMIC_ADD_RETURN(i, &v->counter); \ -} \ - \ -static inline i_type a_type##_add_return_release(i_type i, a_type##_t *v)\ -{ \ - return __ATOMIC_ADD_RETURN_RELEASE(i, &v->counter); \ -} \ - \ -static inline i_type a_type##_sub_return_release(i_type i, a_type##_t *v)\ -{ \ - return __ATOMIC_SUB_RETURN_RELEASE(i, &v->counter); \ -} \ - \ -static inline i_type a_type##_sub_return(i_type i, a_type##_t *v) \ -{ \ - return __ATOMIC_SUB_RETURN(i, &v->counter); \ -} \ - \ -static inline void a_type##_add(i_type i, a_type##_t *v) \ -{ \ - __ATOMIC_ADD(i, &v->counter); \ -} \ - \ -static inline void a_type##_sub(i_type i, a_type##_t *v) \ -{ \ - __ATOMIC_SUB(i, &v->counter); \ -} \ - \ -static inline i_type a_type##_inc_return(a_type##_t *v) \ -{ \ - return __ATOMIC_INC_RETURN(&v->counter); \ -} \ - \ -static inline i_type a_type##_dec_return(a_type##_t *v) \ -{ \ - return __ATOMIC_DEC_RETURN(&v->counter); \ -} \ - \ -static inline i_type a_type##_dec_return_release(a_type##_t *v) \ -{ \ - return __ATOMIC_SUB_RETURN_RELEASE(1, &v->counter); \ -} \ - \ -static inline void a_type##_inc(a_type##_t *v) \ -{ \ - __ATOMIC_INC(&v->counter); \ -} \ - \ -static inline void a_type##_dec(a_type##_t *v) \ -{ \ - __ATOMIC_DEC(&v->counter); \ -} \ - \ -static inline bool a_type##_add_negative(i_type i, a_type##_t *v) \ -{ \ - return __ATOMIC_ADD_RETURN(i, &v->counter) < 0; \ -} \ - \ -static inline bool a_type##_sub_and_test(i_type i, a_type##_t *v) \ -{ \ - return __ATOMIC_SUB_RETURN(i, &v->counter) == 0; \ -} \ - \ -static inline bool a_type##_inc_and_test(a_type##_t *v) \ -{ \ - return __ATOMIC_INC_RETURN(&v->counter) == 0; \ -} \ - \ -static inline bool a_type##_dec_and_test(a_type##_t *v) \ -{ \ - return __ATOMIC_DEC_RETURN(&v->counter) == 0; \ -} \ - \ -static inline i_type a_type##_add_unless(a_type##_t *v, i_type a, i_type u)\ -{ \ - i_type old, c = __ATOMIC_READ(&v->counter); \ - while (c != u && (old = cmpxchg(&v->counter, c, c + a)) != c) \ - c = old; \ - return c; \ -} \ - \ -static inline bool a_type##_inc_not_zero(a_type##_t *v) \ -{ \ - return a_type##_add_unless(v, 1, 0); \ -} \ - \ -static inline void a_type##_and(i_type a, a_type##_t *v) \ -{ \ - __ATOMIC_AND(a, v); \ -} \ - \ -static inline void a_type##_or(i_type a, a_type##_t *v) \ -{ \ - __ATOMIC_OR(a, v); \ -} \ - \ -static inline i_type a_type##_xchg(a_type##_t *v, i_type i) \ -{ \ - return xchg(&v->counter, i); \ -} \ - \ -static inline i_type a_type##_cmpxchg(a_type##_t *v, i_type old, i_type new)\ -{ \ - return cmpxchg(&v->counter, old, new); \ -} \ - \ -static inline i_type a_type##_cmpxchg_acquire(a_type##_t *v, i_type old, i_type new)\ -{ \ - return cmpxchg_acquire(&v->counter, old, new); \ -} \ - \ -static inline bool a_type##_try_cmpxchg_acquire(a_type##_t *v, i_type *old, i_type new)\ -{ \ - i_type prev = *old; \ - *old = cmpxchg_acquire(&v->counter, *old, new); \ - return prev == *old; \ -} - -DEF_ATOMIC_OPS(atomic, int) -DEF_ATOMIC_OPS(atomic_long, long) - -#ifndef ATOMIC64_SPINLOCK -DEF_ATOMIC_OPS(atomic64, s64) -#else -s64 atomic64_read(const atomic64_t *v); -static inline s64 atomic64_read_acquire(const atomic64_t *v) -{ - s64 ret = atomic64_read(v); - smp_mb__after_atomic(); - return ret; -} - -void atomic64_set(atomic64_t *v, s64); - -s64 atomic64_add_return(s64, atomic64_t *); -s64 atomic64_sub_return(s64, atomic64_t *); -void atomic64_add(s64, atomic64_t *); -void atomic64_sub(s64, atomic64_t *); - -s64 atomic64_xchg(atomic64_t *, s64); -s64 atomic64_cmpxchg(atomic64_t *, s64, s64); - -#define atomic64_add_negative(a, v) (atomic64_add_return((a), (v)) < 0) -#define atomic64_inc(v) atomic64_add(1LL, (v)) -#define atomic64_inc_return(v) atomic64_add_return(1LL, (v)) -#define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0) -#define atomic64_sub_and_test(a, v) (atomic64_sub_return((a), (v)) == 0) -#define atomic64_dec(v) atomic64_sub(1LL, (v)) -#define atomic64_dec_return(v) atomic64_sub_return(1LL, (v)) -#define atomic64_dec_and_test(v) (atomic64_dec_return((v)) == 0) -#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1LL, 0LL) - -static inline s64 atomic64_add_return_release(s64 i, atomic64_t *v) -{ - smp_mb__before_atomic(); - return atomic64_add_return(i, v); -} - -static inline s64 atomic64_cmpxchg_acquire(atomic64_t *v, s64 old, s64 new) -{ - return atomic64_cmpxchg(v, old, new); -} - -static inline s64 atomic64_sub_return_release(s64 i, atomic64_t *v) -{ - smp_mb__before_atomic(); - return atomic64_sub_return(i, v); -} - -#endif - -#endif /* __TOOLS_LINUX_ATOMIC_H */ |