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 INCLUDE_BUFFER_HANDLE_UTILS_H 17 #define INCLUDE_BUFFER_HANDLE_UTILS_H 18 19 #include <stdint.h> 20 #include <buffer_handle.h> 21 22 #ifdef __cplusplus 23 extern "C" { 24 #endif 25 26 /** 27 * @Description: Init buffer handle, and must be freeed by FreeBufferHandle to avoid memory leak 28 * @param reserveInts The number of reserved integers 29 * @param reserveFds The number of reserved fds 30 * @return Returns pointer to buffer handle if the operation is successful; returns <b>nullptr</b> otherwise. 31 */ 32 BufferHandle *AllocateBufferHandle(uint32_t reserveInts, uint32_t reserveFds); 33 34 /** 35 * @Description: Free buffer handle allocated by AllocateBufferHandle, and close the fd at the same time. 36 * @param handle Buffer handle which is to be freed. 37 * @return Returns <b>0</b> if the operation is successful; returns <b>-1</b> if failed 38 */ 39 int32_t FreeBufferHandle(BufferHandle *handle); 40 41 #ifdef __cplusplus 42 } 43 #endif 44 45 #endif // INCLUDE_BUFFER_HANDLE_UTILS_H 46