1#ifndef AWS_COMMON_ATOMICS_FALLBACK_INL
2#define AWS_COMMON_ATOMICS_FALLBACK_INL
3
4/*
5 * Copyright 2010-2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
6 *
7 * Licensed under the Apache License, Version 2.0 (the "License").
8 * You may not use this file except in compliance with the License.
9 * A copy of the License is located at
10 *
11 * http://aws.amazon.com/apache2.0
12 *
13 * or in the "license" file accompanying this file. This file is distributed
14 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
15 * express or implied. See the License for the specific language governing
16 * permissions and limitations under the License.
17 */
18
19AWS_EXTERN_C_BEGIN
20
21#ifndef AWS_ATOMICS_HAVE_THREAD_FENCE
22
23void aws_atomic_thread_fence(enum aws_memory_order order) {
24 struct aws_atomic_var var;
25 aws_atomic_int_t expected = 0;
26
27 aws_atomic_store_int(&var, expected, aws_memory_order_relaxed);
28 aws_atomic_compare_exchange_int(&var, &expected, 1, order, aws_memory_order_relaxed);
29}
30
31#endif /* AWS_ATOMICS_HAVE_THREAD_FENCE */
32
33AWS_EXTERN_C_END
34#endif /* AWS_COMMON_ATOMICS_FALLBACK_INL */
35