mirror of
https://github.com/taosdata/TDengine
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88 lines
2.9 KiB
C
88 lines
2.9 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_UTIL_OBJPOOL_H_
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#define _TD_UTIL_OBJPOOL_H_
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#include "talgo.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define TOBJPOOL_INVALID_IDX (-1)
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typedef struct SObjPoolNode {
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int32_t nextIdx;
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int32_t prevIdx;
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} SObjPoolNode;
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#define TOBJPOOL_NODE_GET_OBJ(node) ((void *)((char *)(node) + sizeof(SObjPoolNode)))
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#define TOBJPOOL_OBJ_GET_NODE(obj) ((SObjPoolNode *)((char *)(obj) - sizeof(SObjPoolNode)))
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typedef struct SObjPool {
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void *pData;
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int64_t nodeSize;
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int64_t freeHeadIdx;
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int64_t freeTailIdx;
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int64_t size;
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int64_t capacity;
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} SObjPool;
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#define TOBJPOOL_GET_NODE(pool, idx) ((SObjPoolNode *)((char *)((pool)->pData) + (idx) * (pool)->nodeSize))
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#define TOBJPOOL_GET_IDX(pool, node) (POINTER_DISTANCE(node, (pool)->pData) / (pool)->nodeSize)
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int32_t taosObjPoolInit(SObjPool *pPool, int64_t cap, size_t objSize);
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int32_t taosObjPoolEnsureCap(SObjPool *pPool, int64_t newCap);
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void taosObjPoolDestroy(SObjPool *pPool);
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typedef struct SObjList {
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SObjPool *pPool;
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int64_t neles;
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int64_t headIdx;
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int64_t tailIdx;
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} SObjList;
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typedef enum { TOBJLIST_ITER_FORWARD, TOBJLIST_ITER_BACKWARD } EObjListIterDirection;
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typedef struct SObjListIter {
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SObjPool *pPool;
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int64_t nextIdx;
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EObjListIterDirection direction;
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} SObjListIter;
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int32_t taosObjListInit(SObjList *pList, SObjPool *pPool);
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void taosObjListClear(SObjList *pList);
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void taosObjListClearEx(SObjList *pList, FDelete fp);
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int32_t taosObjListPrepend(SObjList *pList, const void *pData);
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int32_t taosObjListAppend(SObjList *pList, const void *pData);
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void taosObjListPopHeadTo(SObjList *pList, void *pObj, int32_t nele);
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void taosObjListPopHead(SObjList *pList);
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void taosObjListPopHeadEx(SObjList *pList, FDelete fp);
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void taosObjListPopTail(SObjList *pList);
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void taosObjListPopTailEx(SObjList *pList, FDelete fp);
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void taosObjListPopObj(SObjList *pList, void *pObj);
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void taosObjListPopObjEx(SObjList *pList, void *pObj, FDelete fp);
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void *taosObjListGetHead(SObjList *pList);
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void *taosObjListGetTail(SObjList *pList);
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void taosObjListInitIter(SObjList *pList, SObjListIter *pIter, EObjListIterDirection direction);
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void *taosObjListIterNext(SObjListIter *pIter);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _TD_UTIL_OBJPOOL_H_ */
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