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 #include "napi_rpc_error.h" 24 25 namespace OHOS { 26 class NAPIAshmem { 27 public: 28 enum { 29 PROT_EXEC = 4, 30 PROT_NONE = 0, 31 PROT_READ = 1, 32 PROT_WRITE = 2, 33 }; 34 explicit NAPIAshmem(sptr<Ashmem> &ashmem); NAPIAshmem()35 NAPIAshmem() : ashmem_(nullptr) {} 36 ~NAPIAshmem() = default; GetAshmem()37 const sptr<Ashmem> &GetAshmem() 38 { 39 return ashmem_; 40 } SetAshmem(sptr<Ashmem> & ashmem)41 void SetAshmem(sptr<Ashmem> &ashmem) 42 { 43 ashmem_ = ashmem; 44 } 45 static napi_value AshmemExport(napi_env env, napi_value exports); 46 private: 47 static napi_value Ashmem_JS_Constructor(napi_env env, napi_callback_info info); 48 static napi_value CloseAshmem(napi_env env, napi_callback_info info); 49 static napi_value CreateAshmem(napi_env env, napi_callback_info info); 50 static napi_value Create(napi_env env, napi_callback_info info); 51 static napi_value CreateAshmemFromExisting(napi_env env, napi_callback_info info); 52 static napi_value GetAshmemSize(napi_env env, napi_callback_info info); 53 static napi_value MapAshmem(napi_env env, napi_callback_info info); 54 static napi_value MapTypedAshmem(napi_env env, napi_callback_info info); 55 static napi_value MapReadAndWriteAshmem(napi_env env, napi_callback_info info); 56 static napi_value MapReadWriteAshmem(napi_env env, napi_callback_info info); 57 static napi_value MapReadOnlyAshmem(napi_env env, napi_callback_info info); 58 static napi_value MapReadonlyAshmem(napi_env env, napi_callback_info info); 59 static napi_value ReadFromAshmem(napi_env env, napi_callback_info info); 60 static napi_value ReadAshmem(napi_env env, napi_callback_info info); 61 static napi_value ReadDataFromAshmem(napi_env env, napi_callback_info info); 62 static napi_value SetProtection(napi_env env, napi_callback_info info); 63 static napi_value SetProtectionType(napi_env env, napi_callback_info info); 64 static napi_value UnmapAshmem(napi_env env, napi_callback_info info); 65 static napi_value WriteToAshmem(napi_env env, napi_callback_info info); 66 static napi_value WriteAshmem(napi_env env, napi_callback_info info); 67 static napi_value WriteDataToAshmem(napi_env env, napi_callback_info info); 68 static napi_value GetAshmemFromExisting(napi_env env, napi_callback_info info); 69 static napi_value GetAshmemConstructor(napi_env env, napi_value* argv); 70 static napi_value getNewAshmemConstructor(napi_env env, napi_value &constructor, int32_t fd, uint32_t size); 71 static napi_value CheckWriteAshmemParams(napi_env env, size_t argc, napi_value* argv); 72 static napi_value CheckWriteToAshmemParams(napi_env env, size_t argc, napi_value* argv); 73 static napi_value CheckReadFromAshmemParams(napi_env env, size_t argc, napi_value* argv); 74 static napi_value TransferByteToJsData(napi_env env, uint32_t size, const void *result); 75 sptr<Ashmem> ashmem_; 76 77 static NapiError napiErr; 78 }; 79 } // namespace OHOS 80 #endif 81