1 /* 2 * Copyright (C) 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 NAPI_IPC_OHOS_ASHMEM_H 17 #define NAPI_IPC_OHOS_ASHMEM_H 18 19 #include "napi/native_api.h" 20 #include "napi/native_common.h" 21 #include "napi/native_node_api.h" 22 #include "ashmem.h" 23 24 namespace OHOS { 25 class NAPIAshmem { 26 public: 27 enum { 28 PROT_EXEC = 4, 29 PROT_NONE = 0, 30 PROT_READ = 1, 31 PROT_WRITE = 2, 32 }; 33 explicit NAPIAshmem(sptr<Ashmem> &ashmem); NAPIAshmem()34 NAPIAshmem():ashmem_(nullptr) {} 35 ~NAPIAshmem() = default; GetAshmem()36 const sptr<Ashmem> &GetAshmem() 37 { 38 return ashmem_; 39 } SetAshmem(sptr<Ashmem> & ashmem)40 void SetAshmem(sptr<Ashmem> &ashmem) 41 { 42 ashmem_ = ashmem; 43 } 44 static napi_value AshmemExport(napi_env env, napi_value exports); 45 private: 46 static napi_value Ashmem_JS_Constructor(napi_env env, napi_callback_info cbinfo); 47 static napi_value CloseAshmem(napi_env env, napi_callback_info info); 48 static napi_value CreateAshmem(napi_env env, napi_callback_info info); 49 static napi_value CreateAshmemFromExisting(napi_env env, napi_callback_info info); 50 static napi_value GetAshmemSize(napi_env env, napi_callback_info info); 51 static napi_value MapAshmem(napi_env env, napi_callback_info info); 52 static napi_value MapReadAndWriteAshmem(napi_env env, napi_callback_info info); 53 static napi_value MapReadOnlyAshmem(napi_env env, napi_callback_info info); 54 static napi_value ReadFromAshmem(napi_env env, napi_callback_info info); 55 static napi_value SetProtection(napi_env env, napi_callback_info info); 56 static napi_value UnmapAshmem(napi_env env, napi_callback_info info); 57 static napi_value WriteToAshmem(napi_env env, napi_callback_info info); 58 sptr<Ashmem> ashmem_; 59 }; 60 } // namespace OHOS 61 #endif 62