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refactor: do some internal refactor.

This commit is contained in:
Haojun Liao 2023-01-12 23:24:41 +08:00
parent a96de23363
commit 8bed2612a6
1 changed files with 27 additions and 14 deletions
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41
source/dnode/vnode/src/meta/metaCache.c
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@ -464,7 +464,7 @@ static void removeInvalidCacheItem(SArray* pInvalidRes, struct STagFilterResEntr
taosMemoryFree(*p1);
}
atomic_store_32(&(pEntry->qTimes), 0); // reset the query times
pEntry->qTimes = 0; // reset the query times
taosArrayDestroy(pInvalidRes);
}
@ -476,7 +476,6 @@ int32_t metaGetCachedTableUidList(SMeta* pMeta, tb_uid_t suid, const uint8_t* pK
TdThreadMutex* pLock = &pMeta->pCache->sTagFilterResCache.lock;
uint64_t buf[3];
uint32_t times = 0;
*acquireRes = 0;
buf[0] = suid;
@ -502,14 +501,14 @@ int32_t metaGetCachedTableUidList(SMeta* pMeta, tb_uid_t suid, const uint8_t* pK
// set the result into the buffer
taosArrayAddBatch(pList1, p + sizeof(int32_t), size);
times = atomic_add_fetch_32(&(*pEntry)->qTimes, 1);
(*pEntry)->qTimes += 1;
taosLRUCacheRelease(pCache, pHandle, false);
// unlock meta
taosThreadMutexUnlock(pLock);
// check if scanning all items are necessary or not
if (NEED_CHECK_CACHE_ITEM(listNEles(&(*pEntry)->list), times)) {
if (NEED_CHECK_CACHE_ITEM(listNEles(&(*pEntry)->list), (*pEntry)->qTimes)) {
taosThreadMutexLock(pLock);
SArray* pInvalidRes = taosArrayInit(64, POINTER_BYTES);
@ -529,6 +528,19 @@ static void freePayload(const void* key, size_t keyLen, void* value) {
taosMemoryFree(value);
}
static int32_t addNewEntry(SHashObj* pTableEntry, const void* pKey, int32_t keyLen, uint64_t suid) {
STagFilterResEntry* p = taosMemoryMalloc(sizeof(STagFilterResEntry));
if (p == NULL) {
return TSDB_CODE_OUT_OF_MEMORY;
}
p->qTimes = 1;
tdListInit(&p->list, keyLen);
taosHashPut(pTableEntry, &suid, sizeof(uint64_t), &p, POINTER_BYTES);
tdListAppend(&p->list, pKey);
return 0;
}
// check both the payload size and selectivity ratio
int32_t metaUidFilterCachePut(SMeta* pMeta, uint64_t suid, const void* pKey, int32_t keyLen, void* pPayload,
int32_t payloadLen, double selectivityRatio) {
@ -556,19 +568,19 @@ int32_t metaUidFilterCachePut(SMeta* pMeta, uint64_t suid, const void* pKey, int
buf[0] = suid;
memcpy(&buf[1], pKey, keyLen);
ASSERT(sizeof(uint64_t) + keyLen == 24);
int32_t code = 0;
taosThreadMutexLock(pLock);
STagFilterResEntry** pEntry = taosHashGet(pTableEntry, &suid, sizeof(uint64_t));
if (pEntry == NULL) {
STagFilterResEntry* p = taosMemoryMalloc(sizeof(STagFilterResEntry));
p->qTimes = 0;
tdListInit(&p->list, keyLen);
taosHashPut(pTableEntry, &suid, sizeof(uint64_t), &p, POINTER_BYTES);
tdListAppend(&p->list, pKey);
code = addNewEntry(pTableEntry, pKey, keyLen, suid);
if (code != TSDB_CODE_SUCCESS) {
goto _end;
}
} else {
// check if it exists or not
int32_t times = atomic_add_fetch_32(&(*pEntry)->qTimes, 1);
(*pEntry)->qTimes += 1;
size_t size = listNEles(&(*pEntry)->list);
if (size == 0) {
@ -577,6 +589,7 @@ int32_t metaUidFilterCachePut(SMeta* pMeta, uint64_t suid, const void* pKey, int
SListNode* pNode = listHead(&(*pEntry)->list);
uint64_t* p = (uint64_t*) pNode->data;
if (p[1] == ((uint64_t*)pKey)[1] && p[0] == ((uint64_t*)pKey)[0]) {
// we have already found the existed items, no need to added to cache anymore.
taosThreadMutexUnlock(pLock);
return TSDB_CODE_SUCCESS;
} else { // not equal, append it
@ -588,7 +601,7 @@ int32_t metaUidFilterCachePut(SMeta* pMeta, uint64_t suid, const void* pKey, int
uint64_t keyBuf[3];
// if the threshold value is reached, need to check the value.
if (NEED_CHECK_CACHE_ITEM(size, times)) {
if (NEED_CHECK_CACHE_ITEM(size, (*pEntry)->qTimes)) {
checkCacheEntry = true;
keyBuf[0] = suid;
pInvalidRes = taosArrayInit(64, POINTER_BYTES);
@ -619,7 +632,7 @@ int32_t metaUidFilterCachePut(SMeta* pMeta, uint64_t suid, const void* pKey, int
keyBuf[2] = p[2];
LRUHandle* pRes = taosLRUCacheLookup(pCache, keyBuf, 24);
if (pRes == NULL) { // remove the item in the linked list
if (pRes == NULL) { // add the invalid item in the array list to be removed.
taosArrayPush(pInvalidRes, &pNode);
} else {
taosLRUCacheRelease(pCache, pRes, false);
@ -639,13 +652,13 @@ int32_t metaUidFilterCachePut(SMeta* pMeta, uint64_t suid, const void* pKey, int
// add to cache.
taosLRUCacheInsert(pCache, buf, sizeof(uint64_t) + keyLen, pPayload, payloadLen, freePayload, NULL,
TAOS_LRU_PRIORITY_LOW);
_end:
taosThreadMutexUnlock(pLock);
metaDebug("vgId:%d, suid:%" PRIu64 " list cache added into cache, total:%d, tables:%d", TD_VID(pMeta->pVnode), suid,
(int32_t)taosLRUCacheGetUsage(pCache), taosHashGetSize(pTableEntry));
return TSDB_CODE_SUCCESS;
return code;
}
// remove the lru cache that are expired due to the tags value update, or creating, or dropping, of child tables