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fix(query): fix race condition.

This commit is contained in:
Haojun Liao 2022-12-27 11:02:07 +08:00
parent 8a4fb244fb
commit 58b5d2e0aa
1 changed files with 10 additions and 11 deletions
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21
source/dnode/vnode/src/meta/metaCache.c
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@ -57,7 +57,6 @@ struct SMetaCache {
TdThreadMutex lock;
SHashObj* pTableEntry;
SLRUCache* pUidResCache;
uint64_t keyBuf[3];
} sTagFilterResCache;
};
@ -429,20 +428,20 @@ int32_t metaGetCachedTableUidList(SMeta* pMeta, tb_uid_t suid, const uint8_t* pK
bool* acquireRes) {
// generate the composed key for LRU cache
SLRUCache* pCache = pMeta->pCache->sTagFilterResCache.pUidResCache;
uint64_t* pBuf = pMeta->pCache->sTagFilterResCache.keyBuf;
SHashObj* pTableMap = pMeta->pCache->sTagFilterResCache.pTableEntry;
TdThreadMutex* pLock = &pMeta->pCache->sTagFilterResCache.lock;
uint64_t buf[3] = {0};
uint32_t times = 0;
*acquireRes = 0;
pBuf[0] = suid;
memcpy(&pBuf[1], pKey, keyLen);
buf[0] = suid;
memcpy(&buf[1], pKey, keyLen);
taosThreadMutexLock(pLock);
int32_t len = keyLen + sizeof(uint64_t);
LRUHandle* pHandle = taosLRUCacheLookup(pCache, pBuf, len);
LRUHandle* pHandle = taosLRUCacheLookup(pCache, buf, len);
if (pHandle == NULL) {
taosThreadMutexUnlock(pLock);
return TSDB_CODE_SUCCESS;
@ -476,10 +475,10 @@ int32_t metaGetCachedTableUidList(SMeta* pMeta, tb_uid_t suid, const uint8_t* pK
SListNode* pNode = NULL;
while ((pNode = tdListNext(&iter)) != NULL) {
memcpy(&pBuf[1], pNode->data, keyLen);
memcpy(&buf[1], pNode->data, keyLen);
// check whether it is existed in LRU cache, and remove it from linked list if not.
LRUHandle* pRes = taosLRUCacheLookup(pCache, pBuf, len);
LRUHandle* pRes = taosLRUCacheLookup(pCache, buf, len);
if (pRes == NULL) { // remove the item in the linked list
taosArrayPush(pInvalidRes, &pNode);
} else {
@ -547,14 +546,14 @@ int32_t metaUidFilterCachePut(SMeta* pMeta, uint64_t suid, const void* pKey, int
tdListAppend(&(*pEntry)->list, pKey);
}
uint64_t* pBuf = pMeta->pCache->sTagFilterResCache.keyBuf;
pBuf[0] = suid;
uint64_t buf[3] = {0};
buf[0] = suid;
memcpy(&pBuf[1], pKey, keyLen);
memcpy(&buf[1], pKey, keyLen);
ASSERT(sizeof(uint64_t) + keyLen == 24);
// add to cache.
taosLRUCacheInsert(pCache, pBuf, sizeof(uint64_t) + keyLen, pPayload, payloadLen, freePayload, NULL,
taosLRUCacheInsert(pCache, buf, sizeof(uint64_t) + keyLen, pPayload, payloadLen, freePayload, NULL,
TAOS_LRU_PRIORITY_LOW);
taosThreadMutexUnlock(pLock);