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 FOUNDATION_ACE_NAPI_NATIVE_ENGINE_NATIVE_ASYNC_WORK_H 17 #define FOUNDATION_ACE_NAPI_NATIVE_ENGINE_NATIVE_ASYNC_WORK_H 18 19 #include "interfaces/kits/napi/common.h" 20 #include "native_value.h" 21 22 #include <mutex> 23 #include <queue> 24 #include <uv.h> 25 26 struct NativeAsyncWorkDataPointer { NativeAsyncWorkDataPointerNativeAsyncWorkDataPointer27 NativeAsyncWorkDataPointer() 28 { 29 data_ = nullptr; 30 } 31 NativeAsyncWorkDataPointerNativeAsyncWorkDataPointer32 explicit NativeAsyncWorkDataPointer(void* data) 33 { 34 data_ = data; 35 } 36 void* data_ { nullptr }; 37 }; 38 39 #ifdef ENABLE_HITRACE 40 namespace OHOS { 41 namespace HiviewDFX { 42 class HiTraceId; 43 } 44 } // namespace OHOS 45 #endif 46 47 class NativeAsyncWork { 48 public: 49 NativeAsyncWork(NativeEngine* engine, 50 NativeAsyncExecuteCallback execute, 51 NativeAsyncCompleteCallback complete, 52 const std::string &asyncResourceName, 53 void* data); 54 55 virtual ~NativeAsyncWork(); 56 virtual bool Queue(); 57 virtual bool QueueWithQos(napi_qos_t qos); 58 virtual bool Cancel(); 59 virtual std::string GetTraceDescription(); 60 template<typename Inner, typename Outer> DereferenceOf(const Inner Outer::* field,const Inner * pointer)61 static Outer* DereferenceOf(const Inner Outer::*field, const Inner* pointer) 62 { 63 if (field != nullptr && pointer != nullptr) { 64 auto fieldOffset = reinterpret_cast<uintptr_t>(&(static_cast<Outer*>(0)->*field)); 65 auto outPointer = reinterpret_cast<Outer*>(reinterpret_cast<uintptr_t>(pointer) - fieldOffset); 66 return outPointer; 67 } 68 return nullptr; 69 } 70 71 private: 72 static void AsyncWorkCallback(uv_work_t* req); 73 static void AsyncAfterWorkCallback(uv_work_t* req, int status); 74 75 uv_work_t work_; 76 NativeEngine* engine_; 77 NativeAsyncExecuteCallback execute_; 78 NativeAsyncCompleteCallback complete_; 79 void* data_; 80 std::mutex workAsyncMutex_; 81 std::queue<NativeAsyncWorkDataPointer> asyncWorkRecvData_; 82 std::string traceDescription_; 83 #ifdef ENABLE_HITRACE 84 std::unique_ptr<OHOS::HiviewDFX::HiTraceId> traceId_; 85 #endif 86 }; 87 88 #endif /* FOUNDATION_ACE_NAPI_NATIVE_ENGINE_NATIVE_ASYNC_WORK_H */ 89