1/*
2 * Copyright (c) 2023 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 /**
17 * @file shared_mutex.h
18 *
19 * @brief Declares the shared_mutex interfaces in C++.
20 *
21 * @version 1.0
22 */
23
24#ifndef FFRT_API_CPP_SHARED_MUTEX_H
25#define FFRT_API_CPP_SHARED_MUTEX_H
26#include "c/shared_mutex.h"
27
28namespace ffrt {
29class shared_mutex : public ffrt_rwlock_t {
30public:
31    shared_mutex()
32    {
33        ffrt_rwlock_init(this, nullptr);
34    }
35
36    ~shared_mutex()
37    {
38        ffrt_rwlock_destroy(this);
39    }
40
41    shared_mutex(shared_mutex const&) = delete;
42    void operator=(shared_mutex const&) = delete;
43
44    inline void lock()
45    {
46        ffrt_rwlock_wrlock(this);
47    }
48
49    inline bool try_lock()
50    {
51        return ffrt_rwlock_trywrlock(this) == ffrt_success ? true : false;
52    }
53
54    inline void unlock()
55    {
56        ffrt_rwlock_unlock(this);
57    }
58
59    inline void lock_shared()
60    {
61        ffrt_rwlock_rdlock(this);
62    }
63
64    inline bool try_lock_shared()
65    {
66        return ffrt_rwlock_tryrdlock(this) == ffrt_success ? true : false;
67    }
68
69    inline void unlock_shared()
70    {
71        ffrt_rwlock_unlock(this);
72    }
73};
74} // namespace ffrt
75#endif
76