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Diffstat (limited to 'src/nSocket/include/nstack_atomic.h')
-rw-r--r-- | src/nSocket/include/nstack_atomic.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/src/nSocket/include/nstack_atomic.h b/src/nSocket/include/nstack_atomic.h new file mode 100644 index 0000000..37ab451 --- /dev/null +++ b/src/nSocket/include/nstack_atomic.h @@ -0,0 +1,57 @@ +/* +* +* Copyright (c) 2018 Huawei Technologies Co.,Ltd. +* Licensed under the Apache License, Version 2.0 (the "License"); +* you may not use this file except in compliance with the License. +* You may obtain a copy of the License at: +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* See the License for the specific language governing permissions and +* limitations under the License. +*/ + +#ifndef _NSTACK_ATOMIC_H_ +#define _NSTACK_ATOMIC_H_ +#include <stdio.h> +#include <stdlib.h> + +#include "nstack_types.h" + +#ifdef __cplusplus +/* *INDENT-OFF* */ +extern "C"{ +/* *INDENT-ON* */ +#endif + +typedef struct +{ + volatile ns_int32 counter; +} atomic_t; + +#define atomic_set(v, i) ((v)->counter = (i)) + +#define atomic_fetch_and_add(v, i) __sync_fetch_and_add(&(v)->counter, i) +#define atomic_add_and_fetch(v, i) __sync_add_and_fetch(&(v)->counter, i) + +#define atomic_fetch_and_sub(v, i) __sync_fetch_and_sub(&(v)->counter, i) +#define atomic_sub_and_fetch(v, i) __sync_sub_and_fetch(&(v)->counter, i) + +#define atomic_read(v) atomic_fetch_and_add(v, 0) +#define atomic_inc(v) atomic_add_and_fetch(v, 1) +#define atomic_dec(v)atomic_sub_and_fetch(v, 1) +#define atomic_add(v, i) atomic_add_and_fetch(v, i) +#define atomic_sub(v, i) atomic_sub_and_fetch(v,i) + +#define cas(ptr, oldValue, exchage) __sync_bool_compare_and_swap(ptr, oldValue, exchage) + +#ifdef __cplusplus +/* *INDENT-OFF* */ +} +/* *INDENT-ON* */ +#endif + +#endif |