1 /* 2 * Copyright (c) 2021-2022 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_EVENT_MANAGER_H 17 #define COMMUNICATIONNETSTACK_EVENT_MANAGER_H 18 19 #include <atomic> 20 #include <iosfwd> 21 #include <list> 22 #include <mutex> 23 #include <unordered_set> 24 #include <string> 25 #include <utility> 26 #include <queue> 27 28 #include "event_listener.h" 29 #include "napi/native_api.h" 30 #include "uv.h" 31 32 namespace OHOS::NetStack { 33 class EventManager { 34 public: 35 EventManager(); 36 37 ~EventManager(); 38 39 EventManager(const EventManager &) = delete; 40 EventManager &operator=(const EventManager &manager) = delete; 41 42 void AddListener(napi_env env, const std::string &type, napi_value callback, bool once, bool asyncCallback); 43 44 void DeleteListener(const std::string &type, napi_value callback); 45 46 void Emit(const std::string &type, const std::pair<napi_value, napi_value> &argv); 47 48 void SetData(void *data); 49 50 [[nodiscard]] void *GetData(); 51 52 void EmitByUv(const std::string &type, void *data, void(Handler)(uv_work_t *, int status)); 53 54 bool HasEventListener(const std::string &type); 55 56 void DeleteListener(const std::string &type); 57 58 static void SetInvalid(EventManager *manager); 59 60 static bool IsManagerValid(EventManager *manager); 61 62 static void SetValid(EventManager *manager); 63 64 void SetQueueData(void *data); 65 66 void *GetQueueData(); 67 68 void PopQueueData(); 69 70 void CreateEventReference(napi_env env, napi_value value); 71 72 void DeleteEventReference(napi_env env); 73 74 void SetEventDestroy(bool flag); 75 76 bool IsEventDestroy(); 77 78 const std::string &GetWebSocketTextData(); 79 80 void AppendWebSocketTextData(void *data, size_t length); 81 82 const std::string &GetWebSocketBinaryData(); 83 84 void AppendWebSocketBinaryData(void *data, size_t length); 85 86 void ClearWebSocketTextData(); 87 88 void ClearWebSocketBinaryData(); 89 90 private: 91 std::mutex mutexForListenersAndEmitByUv_; 92 std::mutex mutexForEmitAndEmitByUv_; 93 std::mutex dataMutex_; 94 std::mutex dataQueueMutex_; 95 std::list<EventListener> listeners_; 96 void *data_; 97 std::queue<void *> dataQueue_; 98 static std::mutex mutexForManager_; 99 static std::unordered_set<EventManager *> validManager_; 100 napi_ref eventRef_; 101 std::atomic_bool isDestroy_; 102 std::string webSocketTextData_; 103 std::string webSocketBinaryData_; 104 }; 105 106 struct UvWorkWrapper { 107 UvWorkWrapper() = delete; 108 109 explicit UvWorkWrapper(void *theData, napi_env theEnv, std::string eventType, EventManager *eventManager); 110 111 void *data; 112 napi_env env; 113 std::string type; 114 EventManager *manager; 115 }; 116 } // namespace OHOS::NetStack 117 #endif /* COMMUNICATIONNETSTACK_EVENT_MANAGER_H */ 118