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 #ifndef FFRT_ENTITY_HPP
17 #define FFRT_ENTITY_HPP
18 
19 #include <unordered_map>
20 #include <list>
21 
22 #include "sync/sync.h"
23 #include "tm/cpu_task.h"
24 
25 namespace ffrt {
26 struct VersionCtx;
27 
28 struct Entity {
InstanceEntity29     static inline Entity* Instance()
30     {
31         static Entity ins;
32         return &ins;
33     }
34 
35     VersionCtx* VA2Ctx(const void* p, SCPUEUTask* task);
36     void RecycleVersion();
37 
38     std::list<VersionCtx*> versionTrashcan; // VersionCtx to be deleted
39     std::unordered_map<const void*, VersionCtx*> vaMap;
40     /* It is only used to ensure the consistency between multiple groups of ctx,
41      * and to ensure that the status cannot be changed between the query status and the do action
42      */
43     fast_mutex criticalMutex_;
44 };
45 } // namespace ffrt
46 #endif
47