74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
/*
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* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
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*
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* This program is free software: you can use, redistribute, and/or modify
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* it under the terms of the GNU Affero General Public License, version 3
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* or later ("AGPL"), as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _TD_TKV_H_
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#define _TD_TKV_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct tkv_db_s tkv_db_t;
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typedef struct {
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/* data */
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} tkv_key_t;
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typedef struct {
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bool pinned;
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int64_t ref; // TODO: use util library
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// TODO: add a RW latch here
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uint64_t offset;
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void * pObj;
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} tkv_obj_t;
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typedef int (*tkv_key_comp_fn_t)(const tkv_key_t *, const tkv_key_t *);
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typedef void (*tkv_get_key_fn_t)(const tkv_obj_t *, tkv_key_t *);
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typedef int (*tkv_obj_encode_fn_t)(void **buf, void *pObj);
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typedef void *(*tkv_obj_decode_fn_t)(void *buf, void **pObj);
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typedef int (*tkv_obj_comp_fn_t)(const tkv_obj_t *, const tkv_obj_t *);
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typedef void (*tkv_obj_destroy_fn_t)(void *);
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typedef struct {
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uint64_t memLimit;
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tkv_get_key_fn_t getKey;
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tkv_obj_encode_fn_t encode;
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tkv_obj_decode_fn_t decode;
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tkv_obj_comp_fn_t compare;
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tkv_obj_destroy_fn_t destroy;
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} tkv_db_option_t;
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tkv_db_t * tkvOpenDB(char *dir, tkv_db_option_t *);
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int tkvCloseDB(tkv_db_t *);
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int tkvPut(tkv_db_t *, tkv_obj_t *);
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int tkvPutBatch(tkv_db_t *, tkv_obj_t **, int); // TODO: use array here
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const tkv_obj_t *tkvGet(tkv_key_t *);
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int tkvGetBatch(tkv_db_t *, tkv_key_t **, int, tkv_obj_t **); // TODO: use array here
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int tkvDrop(tkv_db_t *, tkv_key_t *);
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int tkvDropBatch(tkv_db_t *, tkv_key_t **, int); // TODO: use array here
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int tkvCommit(tkv_db_t *, void * /*TODO*/);
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typedef struct {
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} tkv_db_iter_t;
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tkv_db_iter_t * tkvIterNew(tkv_db_t *);
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void tkvIterFree(tkv_db_iter_t *);
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const tkv_obj_t *tkvIterNext(tkv_db_iter_t *);
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#ifdef __cplusplus
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}
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#endif
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#endif /*_TD_TKV_H_*/ |