1 /*
2  * Copyright (c) 2020-2021 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 GRAPHIC_LITE_TASK_MANAGER_H
17 #define GRAPHIC_LITE_TASK_MANAGER_H
18 
19 #include <cstdint>
20 
21 #include "gfx_utils/list.h"
22 #include "common/task.h"
23 
24 namespace OHOS {
25 class TaskManager : public HeapBase {
26 public:
27     /**
28      * @brief return TaskManager's singleton
29      * @return TaskManager*
30      */
31     static TaskManager* GetInstance();
32 
33     /**
34      * @brief add task to task manager
35      * @param [in] task task pointer
36      */
37     void Add(Task* task);
38 
39     /**
40      * @brief del task from task manager
41      * @param [in] task task pointer
42      */
43     void Remove(Task* task);
44 
45     /**
46      * @brief set task run
47      * @param [in] enable task run
48      */
SetTaskRun(bool enable)49     void SetTaskRun(bool enable)
50     {
51         canTaskRun_ = enable;
52     }
53 
54     /**
55      * @brief get task run
56      * @return enable task run
57      */
GetTaskRun()58     bool GetTaskRun() const
59     {
60         return canTaskRun_;
61     }
62 
63     /**
64      * @brief run all task
65      */
66     void TaskHandler();
67 
68     /**
69      * @brief reset the mutex of task handler, must be used carefully
70      */
71     void ResetTaskHandlerMutex();
72 
73 private:
TaskManager()74     TaskManager() : canTaskRun_(false), isHandlerRunning_(false) {}
~TaskManager()75     ~TaskManager() {}
76 
77     TaskManager(const TaskManager&) = delete;
78     TaskManager& operator=(const TaskManager&) = delete;
79     TaskManager(TaskManager&&) = delete;
80     TaskManager& operator=(TaskManager&&) = delete;
81 
82     List<Task*> list_; /* the task list */
83     bool canTaskRun_;
84     bool isHandlerRunning_;
85 };
86 } // namespace OHOS
87 #endif // GRAPHIC_LITE_TASK_MANAGER_H
88