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 #ifndef META_INTERFACE_OBJECT_MACROS_H
16 #define META_INTERFACE_OBJECT_MACROS_H
17 
18 #include <meta/base/interface_macros.h>
19 #include <meta/interface/intf_lifecycle.h>
20 
21 /**
22  * @brief Implement reference counting with ILifecycle support for destruction.
23  */
24 #define META_IMPLEMENT_REF_COUNT()                                         \
25     int32_t refcnt_ { 0 };                                                 \
26     void Ref() override                                                    \
27     {                                                                      \
28         CORE_NS::AtomicIncrement(&refcnt_);                                \
29     }                                                                      \
30     void Unref() override                                                  \
31     {                                                                      \
32         if (CORE_NS::AtomicDecrement(&refcnt_) == 0) {                     \
33             if (auto i = this->GetInterface(::META_NS::ILifecycle::UID)) { \
34                 static_cast<::META_NS::ILifecycle*>(i)->Destroy();         \
35             }                                                              \
36             delete this;                                                   \
37         }                                                                  \
38     }
39 
40 #endif
41