mirror of
https://github.com/taosdata/TDengine
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ac23a4fc55
* enh: add client processing * enh: add mnode vtables processing * enh: add mnode vtable processing * enh: add normal child vtable support * fix: compile issues * fix: compile issues * fix: create stream issues * fix: multi stream scan issue * fix: remove debug info * fix: agg task and task level issues * fix: correct task output type * fix: split vtablescan from agg * fix: memory leak issues * fix: add limitations * Update 09-error-code.md * Update 09-error-code.md * fix: remove usless case * feat(stream): extract original table data in source scan task Implemented functionality in the source task to extract data corresponding to the virtual table from the original table using WAL. The extracted data is then sent to the downstream merge task for further processing. * feat(stream): multi-way merge using loser tree in virtual merge task Implemented multi-way merge in the merge task using a loser tree to combine data from multiple original table into a single virtual table. The merged virtual table data is then pushed downstream for further processing. Introduced memory limit handling during the merge process with configurable behavior when the memory limit is reached. * fix(test): remove useless cases --------- Co-authored-by: dapan1121 <wpan@taosdata.com> Co-authored-by: Pan Wei <72057773+dapan1121@users.noreply.github.com>
75 lines
2.7 KiB
C
75 lines
2.7 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_LRUCACHE_H_
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#define _TD_UTIL_LRUCACHE_H_
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#include "thash.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct SLRUCache SLRUCache;
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typedef void (*_taos_lru_deleter_t)(const void *key, size_t keyLen, void *value, void *ud);
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typedef void (*_taos_lru_overwriter_t)(const void *key, size_t keyLen, void *value, void *ud);
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typedef int (*_taos_lru_functor_t)(const void *key, size_t keyLen, void *value, void *ud);
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typedef struct LRUHandle LRUHandle;
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typedef enum { TAOS_LRU_PRIORITY_HIGH, TAOS_LRU_PRIORITY_LOW } LRUPriority;
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typedef enum {
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TAOS_LRU_STATUS_OK,
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TAOS_LRU_STATUS_FAIL,
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TAOS_LRU_STATUS_INCOMPLETE,
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TAOS_LRU_STATUS_OK_OVERWRITTEN
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} LRUStatus;
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SLRUCache *taosLRUCacheInit(size_t capacity, int numShardBits, double highPriPoolRatio);
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void taosLRUCacheCleanup(SLRUCache *cache);
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LRUStatus taosLRUCacheInsert(SLRUCache *cache, const void *key, size_t keyLen, void *value, size_t charge,
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_taos_lru_deleter_t deleter, _taos_lru_overwriter_t overwriter, LRUHandle **handle,
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LRUPriority priority, void *ud);
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LRUHandle *taosLRUCacheLookup(SLRUCache *cache, const void *key, size_t keyLen);
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void taosLRUCacheErase(SLRUCache *cache, const void *key, size_t keyLen);
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void taosLRUCacheApply(SLRUCache *cache, _taos_lru_functor_t functor, void *ud);
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void taosLRUCacheEraseUnrefEntries(SLRUCache *cache);
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bool taosLRUCacheRef(SLRUCache *cache, LRUHandle *handle);
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bool taosLRUCacheRelease(SLRUCache *cache, LRUHandle *handle, bool eraseIfLastRef);
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void *taosLRUCacheValue(SLRUCache *cache, LRUHandle *handle);
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void taosLRUCacheUpdate(SLRUCache *cache, LRUHandle *handle, void *value);
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size_t taosLRUCacheGetUsage(SLRUCache *cache);
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size_t taosLRUCacheGetPinnedUsage(SLRUCache *cache);
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int32_t taosLRUCacheGetElems(SLRUCache *cache);
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void taosLRUCacheSetCapacity(SLRUCache *cache, size_t capacity);
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size_t taosLRUCacheGetCapacity(SLRUCache *cache);
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void taosLRUCacheSetStrictCapacity(SLRUCache *cache, bool strict);
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bool taosLRUCacheIsStrictCapacity(SLRUCache *cache);
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#ifdef __cplusplus
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}
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#endif
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#endif // _TD_UTIL_LRUCACHE_H_
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