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[td-225] add remove support for skiplist and super table index.

This commit is contained in:
hjxilinx 2020-05-08 16:23:07 +08:00
parent 557064d1f3
commit 4b86e0a39c
3 changed files with 267 additions and 246 deletions
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12
src/tsdb/src/tsdbMeta.c
View File

@ -502,13 +502,19 @@ static int tsdbAddTableIntoIndex(STsdbMeta *pMeta, STable *pTable) {
memcpy(SL_GET_NODE_DATA(pNode), &pTable, POINTER_BYTES);
tSkipListPut(list, pNode);
return 0;
}
static int tsdbRemoveTableFromIndex(STsdbMeta *pMeta, STable *pTable) {
assert(pTable->type == TSDB_CHILD_TABLE);
// TODO
assert(pTable->type == TSDB_CHILD_TABLE && pTable != NULL);
STable* pSTable = tsdbGetTableByUid(pMeta, pTable->superUid);
assert(pSTable != NULL);
char* key = dataRowTuple(pTable->tagVal); // key
bool ret = tSkipListRemove(pSTable->pIndex, key);
assert(ret);
return 0;
}

5
src/util/inc/tskiplist.h
View File

@ -178,10 +178,9 @@ SSkipListNode *tSkipListPut(SSkipList *pSkipList, SSkipListNode *pNode);
*
* @param pSkipList
* @param pKey
* @param keyType
* @return
*/
SArray *tSkipListGet(SSkipList *pSkipList, SSkipListKey pKey, int16_t keyType);
SArray *tSkipListGet(SSkipList *pSkipList, SSkipListKey pKey);
/**
* get the size of skip list
@ -242,7 +241,7 @@ void *tSkipListDestroyIter(SSkipListIterator *iter);
* true: one node has been removed
* false: no node has been removed
*/
bool tSkipListRemove(SSkipList *pSkipList, SSkipListKey *pKey);
bool tSkipListRemove(SSkipList *pSkipList, SSkipListKey key);
/*
* remove the specified node in parameters

496
src/util/src/tskiplist.c
View File

@ -74,6 +74,7 @@ static void tSkipListDoInsert(SSkipList *pSkipList, SSkipListNode **forward, SSk
static SSkipListNode* tSkipListPushBack(SSkipList *pSkipList, SSkipListNode *pNode);
static SSkipListNode* tSkipListPushFront(SSkipList* pSkipList, SSkipListNode *pNode);
static SSkipListIterator* doCreateSkipListIterator(SSkipList *pSkipList, int32_t order);
static SSkipListNode* tSkipListDoGet(SSkipList *pSkipList, SSkipListKey key);
static bool initForwardBackwardPtr(SSkipList* pSkipList) {
uint32_t maxLevel = pSkipList->maxLevel;
@ -97,6 +98,7 @@ static bool initForwardBackwardPtr(SSkipList* pSkipList) {
return true;
}
SSkipList *tSkipListCreate(uint8_t maxLevel, uint8_t keyType, uint8_t keyLen, uint8_t dupKey, uint8_t lock,
uint8_t freeNode, __sl_key_fn_t fn) {
SSkipList *pSkipList = (SSkipList *)calloc(1, sizeof(SSkipList));
@ -139,25 +141,6 @@ SSkipList *tSkipListCreate(uint8_t maxLevel, uint8_t keyType, uint8_t keyLen, ui
return pSkipList;
}
// static void doRemove(SSkipList *pSkipList, SSkipListNode *pNode, SSkipListNode *forward[]) {
// int32_t level = pNode->level;
// for (int32_t j = level - 1; j >= 0; --j) {
// if ((forward[j]->pForward[j] != NULL) && (forward[j]->pForward[j]->pForward[j])) {
// forward[j]->pForward[j]->pForward[j]->pBackward[j] = forward[j];
// }
//
// if (forward[j]->pForward[j] != NULL) {
// forward[j]->pForward[j] = forward[j]->pForward[j]->pForward[j];
// }
// }
//
// pSkipList->state.nTotalMemSize -= (sizeof(SSkipListNode) + POINTER_BYTES * pNode->level * 2);
// removeNodeEachLevel(pSkipList, pNode->level);
//
// tfree(pNode);
// --pSkipList->size;
//}
void *tSkipListDestroy(SSkipList *pSkipList) {
if (pSkipList == NULL) {
return NULL;
@ -257,105 +240,10 @@ SSkipListNode *tSkipListPut(SSkipList *pSkipList, SSkipListNode *pNode) {
return pNode;
}
void tSkipListDoInsert(SSkipList *pSkipList, SSkipListNode **forward, SSkipListNode *pNode) {
DO_MEMSET_PTR_AREA(pNode);
for (int32_t i = 0; i < pNode->level; ++i) {
SSkipListNode *x = forward[i];
SL_GET_BACKWARD_POINTER(pNode, i) = x;
SSkipListNode *next = SL_GET_FORWARD_POINTER(x, i);
SL_GET_BACKWARD_POINTER(next, i) = pNode;
SL_GET_FORWARD_POINTER(pNode, i) = next;
SL_GET_FORWARD_POINTER(x, i) = pNode;
}
atomic_add_fetch_32(&pSkipList->size, 1);
if (pSkipList->lock) {
pthread_rwlock_unlock(pSkipList->lock);
}
}
SSkipListNode* tSkipListPushFront(SSkipList* pSkipList, SSkipListNode *pNode) {
SSkipListNode* forward[MAX_SKIP_LIST_LEVEL] = {0};
for(int32_t i = 0; i < pSkipList->level; ++i) {
forward[i] = pSkipList->pHead;
}
tSkipListDoInsert(pSkipList, forward, pNode);
return pNode;
}
SSkipListNode* tSkipListPushBack(SSkipList *pSkipList, SSkipListNode *pNode) {
// do clear pointer area
DO_MEMSET_PTR_AREA(pNode);
for(int32_t i = 0; i < pNode->level; ++i) {
SSkipListNode* prev = SL_GET_BACKWARD_POINTER(pSkipList->pTail, i);
SL_GET_FORWARD_POINTER(prev, i) = pNode;
SL_GET_FORWARD_POINTER(pNode, i) = pSkipList->pTail;
SL_GET_BACKWARD_POINTER(pNode, i) = prev;
SL_GET_BACKWARD_POINTER(pSkipList->pTail, i) = pNode;
}
pSkipList->lastKey = SL_GET_NODE_KEY(pSkipList, pNode);
atomic_add_fetch_32(&pSkipList->size, 1);
if (pSkipList->lock) {
pthread_rwlock_unlock(pSkipList->lock);
}
return pNode;
}
SArray* tSkipListGet(SSkipList *pSkipList, SSkipListKey pKey, int16_t keyType) {
int32_t sLevel = pSkipList->level - 1;
// result list
SArray* tSkipListGet(SSkipList *pSkipList, SSkipListKey key) {
SArray* sa = taosArrayInit(1, POINTER_BYTES);
SSkipListNode *pNode = pSkipList->pHead;
if (pSkipList->lock) {
pthread_rwlock_rdlock(pSkipList->lock);
}
#if SKIP_LIST_RECORD_PERFORMANCE
pSkipList->state.queryCount++;
#endif
__compar_fn_t filterComparFn = getComparFunc(pSkipList->keyInfo.type, 0);
int32_t ret = -1;
for (int32_t i = sLevel; i >= 0; --i) {
SSkipListNode *p = SL_GET_FORWARD_POINTER(pNode, i);
while (p != pSkipList->pTail) {
char *key = SL_GET_NODE_KEY(pSkipList, p);
if ((ret = filterComparFn(key, pKey)) < 0) {
pNode = p;
p = SL_GET_FORWARD_POINTER(p, i);
} else {
break;
}
}
// find the qualified key
if (ret == 0) {
SSkipListNode* pResult = SL_GET_FORWARD_POINTER(pNode, i);
taosArrayPush(sa, &pResult);
// skip list does not allowed duplicated key, abort further retrieve data
if (!pSkipList->keyInfo.dupKey) {
break;
}
}
}
if (pSkipList->lock) {
pthread_rwlock_unlock(pSkipList->lock);
}
SSkipListNode* pNode = tSkipListDoGet(pSkipList, key);
taosArrayPush(sa, &pNode);
return sa;
}
@ -367,114 +255,6 @@ size_t tSkipListGetSize(const SSkipList* pSkipList) {
return pSkipList->size;
}
SSkipListIterator* tSkipListCreateIter(SSkipList *pSkipList) {
if (pSkipList == NULL) {
return NULL;
}
return doCreateSkipListIterator(pSkipList, TSDB_ORDER_ASC);
}
SSkipListIterator *tSkipListCreateIterFromVal(SSkipList* pSkipList, const char* val, int32_t type, int32_t order) {
if (pSkipList == NULL) {
return NULL;
}
assert(order == TSDB_ORDER_ASC || order == TSDB_ORDER_DESC);
if (val == NULL) {
return doCreateSkipListIterator(pSkipList, order);
} else {
SSkipListNode *forward[MAX_SKIP_LIST_LEVEL] = {0};
int32_t ret = -1;
__compar_fn_t filterComparFn = getKeyComparFunc(pSkipList->keyInfo.type);
SSkipListNode* pNode = pSkipList->pHead;
for (int32_t i = pSkipList->level - 1; i >= 0; --i) {
SSkipListNode *p = SL_GET_FORWARD_POINTER(pNode, i);
while (p != pSkipList->pTail) {
char *key = SL_GET_NODE_KEY(pSkipList, p);
if ((ret = filterComparFn(key, val)) < 0) {
pNode = p;
p = SL_GET_FORWARD_POINTER(p, i);
} else {
break;
}
}
forward[i] = pNode;
}
SSkipListIterator* iter = doCreateSkipListIterator(pSkipList, order);
// set the initial position
if (order == TSDB_ORDER_ASC) {
iter->cur = forward[0]; // greater equals than the value
} else {
iter->cur = SL_GET_FORWARD_POINTER(forward[0], 0);
if (ret == 0) {
assert(iter->cur != pSkipList->pTail);
iter->cur = SL_GET_FORWARD_POINTER(iter->cur, 0);
}
}
return iter;
}
}
bool tSkipListIterNext(SSkipListIterator *iter) {
if (iter->pSkipList == NULL) {
return false;
}
SSkipList *pSkipList = iter->pSkipList;
if (pSkipList->lock) {
pthread_rwlock_rdlock(pSkipList->lock);
}
if (iter->order == TSDB_ORDER_ASC) { // ascending order iterate
if (iter->cur == NULL) {
iter->cur = SL_GET_FORWARD_POINTER(pSkipList->pHead, 0);
} else {
iter->cur = SL_GET_FORWARD_POINTER(iter->cur, 0);
}
} else { // descending order iterate
if (iter->cur == NULL) {
iter->cur = SL_GET_BACKWARD_POINTER(pSkipList->pTail, 0);
} else {
iter->cur = SL_GET_BACKWARD_POINTER(iter->cur, 0);
}
}
if (pSkipList->lock) {
pthread_rwlock_unlock(pSkipList->lock);
}
return (iter->order == TSDB_ORDER_ASC)? (iter->cur != pSkipList->pTail) : (iter->cur != pSkipList->pHead);
}
SSkipListNode *tSkipListIterGet(SSkipListIterator *iter) {
if (iter == NULL || iter->cur == iter->pSkipList->pTail || iter->cur == iter->pSkipList->pHead) {
return NULL;
} else {
return iter->cur;
}
}
void* tSkipListDestroyIter(SSkipListIterator* iter) {
if (iter == NULL) {
return NULL;
}
tfree(iter);
return NULL;
}
// static int32_t tSkipListEndParQuery(SSkipList *pSkipList, SSkipListNode *pStartNode, SSkipListKey *pEndKey,
// int32_t cond, SSkipListNode ***pRes) {
// pthread_rwlock_rdlock(&pSkipList->lock);
@ -588,25 +368,162 @@ void* tSkipListDestroyIter(SSkipListIterator* iter) {
// }
//
// // compress the minimum level of skip list
// while (pSkipList->level > 0 && pSkipList->pHead.pForward[pSkipList->level - 1] == NULL) {
// while (pSkipList->level > 0 && SL_GET_FORWARD_POINTER(pSkipList->pHead, pSkipList->level - 1) == NULL) {
// pSkipList->level -= 1;
// }
//
// return true;
//}
//
// void tSkipListRemoveNode(SSkipList *pSkipList, SSkipListNode *pNode) {
// SSkipListNode *forward[MAX_SKIP_LIST_LEVEL] = {0};
//
// pthread_rwlock_rdlock(&pSkipList->lock);
// for (int32_t i = 0; i < pNode->level; ++i) {
// forward[i] = pNode->pBackward[i];
// }
//
// removeSupport(pSkipList, forward, &pNode->key);
// pthread_rwlock_unlock(&pSkipList->lock);
//}
//
bool tSkipListRemove(SSkipList *pSkipList, SSkipListKey key) {
SSkipListNode* pNode = tSkipListDoGet(pSkipList, key);
if (pNode != NULL) {
tSkipListRemoveNode(pSkipList, pNode);
return true;
}
return false;
}
void tSkipListRemoveNode(SSkipList *pSkipList, SSkipListNode *pNode) {
int32_t level = pNode->level;
if (pSkipList->lock) {
pthread_rwlock_wrlock(pSkipList->lock);
}
for (int32_t j = level - 1; j >= 0; --j) {
SSkipListNode* prev = SL_GET_BACKWARD_POINTER(pNode, j);
SSkipListNode* next = SL_GET_FORWARD_POINTER(pNode, j);
SL_GET_FORWARD_POINTER(prev, j) = next;
SL_GET_BACKWARD_POINTER(next, j) = prev;
}
if (pSkipList->keyInfo.freeNode) {
tfree(pNode);
}
atomic_sub_fetch_32(&pSkipList->size, 1);
// compress the minimum level of skip list
while (pSkipList->level > 0 && SL_GET_FORWARD_POINTER(pSkipList->pHead, pSkipList->level - 1) == NULL) {
pSkipList->level -= 1;
}
if (pSkipList->lock) {
pthread_rwlock_unlock(pSkipList->lock);
}
}
SSkipListIterator* tSkipListCreateIter(SSkipList *pSkipList) {
if (pSkipList == NULL) {
return NULL;
}
return doCreateSkipListIterator(pSkipList, TSDB_ORDER_ASC);
}
SSkipListIterator *tSkipListCreateIterFromVal(SSkipList* pSkipList, const char* val, int32_t type, int32_t order) {
if (pSkipList == NULL) {
return NULL;
}
assert(order == TSDB_ORDER_ASC || order == TSDB_ORDER_DESC);
if (val == NULL) {
return doCreateSkipListIterator(pSkipList, order);
} else {
SSkipListNode *forward[MAX_SKIP_LIST_LEVEL] = {0};
int32_t ret = -1;
__compar_fn_t filterComparFn = getKeyComparFunc(pSkipList->keyInfo.type);
SSkipListNode* pNode = pSkipList->pHead;
for (int32_t i = pSkipList->level - 1; i >= 0; --i) {
SSkipListNode *p = SL_GET_FORWARD_POINTER(pNode, i);
while (p != pSkipList->pTail) {
char *key = SL_GET_NODE_KEY(pSkipList, p);
if ((ret = filterComparFn(key, val)) < 0) {
pNode = p;
p = SL_GET_FORWARD_POINTER(p, i);
} else {
break;
}
}
forward[i] = pNode;
}
SSkipListIterator* iter = doCreateSkipListIterator(pSkipList, order);
// set the initial position
if (order == TSDB_ORDER_ASC) {
iter->cur = forward[0]; // greater equals than the value
} else {
iter->cur = SL_GET_FORWARD_POINTER(forward[0], 0);
if (ret == 0) {
assert(iter->cur != pSkipList->pTail);
iter->cur = SL_GET_FORWARD_POINTER(iter->cur, 0);
}
}
return iter;
}
}
bool tSkipListIterNext(SSkipListIterator *iter) {
if (iter->pSkipList == NULL) {
return false;
}
SSkipList *pSkipList = iter->pSkipList;
if (pSkipList->lock) {
pthread_rwlock_rdlock(pSkipList->lock);
}
if (iter->order == TSDB_ORDER_ASC) { // ascending order iterate
if (iter->cur == NULL) {
iter->cur = SL_GET_FORWARD_POINTER(pSkipList->pHead, 0);
} else {
iter->cur = SL_GET_FORWARD_POINTER(iter->cur, 0);
}
} else { // descending order iterate
if (iter->cur == NULL) {
iter->cur = SL_GET_BACKWARD_POINTER(pSkipList->pTail, 0);
} else {
iter->cur = SL_GET_BACKWARD_POINTER(iter->cur, 0);
}
}
if (pSkipList->lock) {
pthread_rwlock_unlock(pSkipList->lock);
}
return (iter->order == TSDB_ORDER_ASC)? (iter->cur != pSkipList->pTail) : (iter->cur != pSkipList->pHead);
}
SSkipListNode *tSkipListIterGet(SSkipListIterator *iter) {
if (iter == NULL || iter->cur == iter->pSkipList->pTail || iter->cur == iter->pSkipList->pHead) {
return NULL;
} else {
return iter->cur;
}
}
void* tSkipListDestroyIter(SSkipListIterator* iter) {
if (iter == NULL) {
return NULL;
}
tfree(iter);
return NULL;
}
// bool tSkipListRemove(SSkipList *pSkipList, SSkipListKey *pKey) {
// SSkipListNode *forward[MAX_SKIP_LIST_LEVEL] = {0};
// __compar_fn_t filterComparFn = getComparFunc(pSkipList, pKey->nType);
@ -668,6 +585,105 @@ void tSkipListPrint(SSkipList *pSkipList, int16_t nlevel) {
}
}
void tSkipListDoInsert(SSkipList *pSkipList, SSkipListNode **forward, SSkipListNode *pNode) {
DO_MEMSET_PTR_AREA(pNode);
for (int32_t i = 0; i < pNode->level; ++i) {
SSkipListNode *x = forward[i];
SL_GET_BACKWARD_POINTER(pNode, i) = x;
SSkipListNode *next = SL_GET_FORWARD_POINTER(x, i);
SL_GET_BACKWARD_POINTER(next, i) = pNode;
SL_GET_FORWARD_POINTER(pNode, i) = next;
SL_GET_FORWARD_POINTER(x, i) = pNode;
}
atomic_add_fetch_32(&pSkipList->size, 1);
if (pSkipList->lock) {
pthread_rwlock_unlock(pSkipList->lock);
}
}
SSkipListNode* tSkipListPushFront(SSkipList* pSkipList, SSkipListNode *pNode) {
SSkipListNode* forward[MAX_SKIP_LIST_LEVEL] = {0};
for(int32_t i = 0; i < pSkipList->level; ++i) {
forward[i] = pSkipList->pHead;
}
tSkipListDoInsert(pSkipList, forward, pNode);
return pNode;
}
SSkipListNode* tSkipListPushBack(SSkipList *pSkipList, SSkipListNode *pNode) {
// do clear pointer area
DO_MEMSET_PTR_AREA(pNode);
for(int32_t i = 0; i < pNode->level; ++i) {
SSkipListNode* prev = SL_GET_BACKWARD_POINTER(pSkipList->pTail, i);
SL_GET_FORWARD_POINTER(prev, i) = pNode;
SL_GET_FORWARD_POINTER(pNode, i) = pSkipList->pTail;
SL_GET_BACKWARD_POINTER(pNode, i) = prev;
SL_GET_BACKWARD_POINTER(pSkipList->pTail, i) = pNode;
}
pSkipList->lastKey = SL_GET_NODE_KEY(pSkipList, pNode);
atomic_add_fetch_32(&pSkipList->size, 1);
if (pSkipList->lock) {
pthread_rwlock_unlock(pSkipList->lock);
}
return pNode;
}
SSkipListNode* tSkipListDoGet(SSkipList *pSkipList, SSkipListKey skey) {
SSkipListNode *pNode = pSkipList->pHead;
SSkipListNode *pRes = NULL;
if (pSkipList->lock) {
pthread_rwlock_rdlock(pSkipList->lock);
}
#if SKIP_LIST_RECORD_PERFORMANCE
pSkipList->state.queryCount++;
#endif
__compar_fn_t cmparFn = getComparFunc(pSkipList->keyInfo.type, 0);
int32_t ret = -1;
for (int32_t i = pSkipList->level - 1; i >= 0; --i) {
SSkipListNode *p = SL_GET_FORWARD_POINTER(pNode, i);
while (p != pSkipList->pTail) {
char *key = SL_GET_NODE_KEY(pSkipList, p);
if ((ret = cmparFn(key, skey)) < 0) {
pNode = p;
p = SL_GET_FORWARD_POINTER(p, i);
} else {
break;
}
}
// find the qualified key
if (ret == 0) {
pRes = SL_GET_FORWARD_POINTER(pNode, i);
break;
// skip list does not allowed duplicated key, abort further retrieve data
// if (!pSkipList->keyInfo.dupKey) {
// break;
// }
}
}
if (pSkipList->lock) {
pthread_rwlock_unlock(pSkipList->lock);
}
return pRes;
}
SSkipListIterator* doCreateSkipListIterator(SSkipList *pSkipList, int32_t order) {
SSkipListIterator* iter = calloc(1, sizeof(SSkipListIterator));
@ -675,4 +691,4 @@ SSkipListIterator* doCreateSkipListIterator(SSkipList *pSkipList, int32_t order)
iter->order = order;
return iter;
}
}