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 NSTACKX_DATABASE_H 17 #define NSTACKX_DATABASE_H 18 19 #include <stdio.h> 20 #include <stdint.h> 21 #ifdef __cplusplus 22 extern "C" { 23 #endif 24 25 typedef uint8_t (*RecCompareCallback)(void *, void *); 26 27 void *DatabaseInit(uint32_t recnum, size_t recsz, RecCompareCallback cb); 28 void DatabaseClean(void *ptr); 29 uint32_t GetDatabaseUseCount(const void *dbptr); 30 void *DatabaseAllocRecord(void *dbptr); 31 void DatabaseFreeRecord(void *dbptr, const void *ptr); 32 void *DatabaseSearchRecord(const void *dbptr, void *ptr); 33 void *DatabaseGetNextRecord(void *dbptr, int64_t *state); 34 35 #ifdef __cplusplus 36 } 37 #endif 38 #endif /* NSTACKX_DATABASE_H */ 39