1 /*
2  * Copyright (c) 2024 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef COMMUNICATIONNETSTACK_SPINLOCK_MUTEX_H
17 #define COMMUNICATIONNETSTACK_SPINLOCK_MUTEX_H
18 
19 namespace OHOS::NetStack::HttpOverCurl {
20 
21 struct spinlock_mutex {
22     std::atomic_flag flag = ATOMIC_FLAG_INIT;
23     spinlock_mutex() = default;
24 
lockspinlock_mutex25     void lock()
26     {
27         while (flag.test_and_set(std::memory_order_acquire))
28             ;
29     }
30 
unlockspinlock_mutex31     void unlock()
32     {
33         flag.clear(std::memory_order_release);
34     }
35 };
36 
37 } // namespace OHOS::NetStack::HttpOverCurl
38 
39 #endif // COMMUNICATIONNETSTACK_SPINLOCK_MUTEX_H
40