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This commit is contained in:
Shengliang Guan 2022-02-28 10:36:13 +08:00
parent 1360f6b265
commit 9df1fed6ab
2 changed files with 167 additions and 161 deletions
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43
include/util/tcache.h
View File

@ -13,27 +13,26 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _TD_UTIL_CACHE_H
#define _TD_UTIL_CACHE_H
#ifndef _TD_UTIL_CACHE_H_
#define _TD_UTIL_CACHE_H_
#include "thash.h"
#include "tlockfree.h"
#ifdef __cplusplus
extern "C" {
#endif
#include "os.h"
#include "tlockfree.h"
#include "thash.h"
#if defined(_TD_ARM_32)
#define TSDB_CACHE_PTR_KEY TSDB_DATA_TYPE_INT
#define TSDB_CACHE_PTR_TYPE int32_t
#define TSDB_CACHE_PTR_KEY TSDB_DATA_TYPE_INT
#define TSDB_CACHE_PTR_TYPE int32_t
#else
#define TSDB_CACHE_PTR_KEY TSDB_DATA_TYPE_BIGINT
#define TSDB_CACHE_PTR_TYPE int64_t
#define TSDB_CACHE_PTR_KEY TSDB_DATA_TYPE_BIGINT
#define TSDB_CACHE_PTR_TYPE int64_t
#endif
typedef void (*__cache_free_fn_t)(void*);
typedef void (*__cache_trav_fn_t)(void*, void*);
typedef void (*__cache_free_fn_t)(void *);
typedef void (*__cache_trav_fn_t)(void *, void *);
typedef struct SCacheStatis {
int64_t missCount;
@ -50,8 +49,8 @@ typedef struct SCacheDataNode {
uint64_t expireTime; // expire time
uint64_t signature;
struct STrashElem *pTNodeHeader; // point to trash node head
uint16_t keySize: 15; // max key size: 32kb
bool inTrashcan: 1;// denote if it is in trash or not
uint16_t keySize : 15; // max key size: 32kb
bool inTrashcan : 1; // denote if it is in trash or not
uint32_t size; // allocated size for current SCacheDataNode
T_REF_DECLARE()
char *key;
@ -75,10 +74,10 @@ typedef struct STrashElem {
typedef struct {
int64_t totalSize; // total allocated buffer in this hash table, SCacheObj is not included.
int64_t refreshTime;
STrashElem * pTrash;
char* name;
STrashElem *pTrash;
char *name;
SCacheStatis statistics;
SHashObj * pHashTable;
SHashObj *pHashTable;
__cache_free_fn_t freeFp;
uint32_t numOfElemsInTrash; // number of element in trash
uint8_t deleting; // set the deleting flag to stop refreshing ASAP.
@ -101,7 +100,8 @@ typedef struct {
* @param fn free resource callback function
* @return
*/
SCacheObj *taosCacheInit(int32_t keyType, int64_t refreshTimeInSeconds, bool extendLifespan, __cache_free_fn_t fn, const char *cacheName);
SCacheObj *taosCacheInit(int32_t keyType, int64_t refreshTimeInSeconds, bool extendLifespan, __cache_free_fn_t fn,
const char *cacheName);
/**
* add data into cache
@ -113,7 +113,8 @@ SCacheObj *taosCacheInit(int32_t keyType, int64_t refreshTimeInSeconds, bool ext
* @param keepTime survival time in second
* @return cached element
*/
void *taosCachePut(SCacheObj *pCacheObj, const void *key, size_t keyLen, const void *pData, size_t dataSize, int durationMS);
void *taosCachePut(SCacheObj *pCacheObj, const void *key, size_t keyLen, const void *pData, size_t dataSize,
int32_t durationMS);
/**
* get data from cache
@ -177,7 +178,7 @@ void taosCacheCleanup(SCacheObj *pCacheObj);
* @param fp
* @return
*/
void taosCacheRefresh(SCacheObj *pCacheObj, __cache_trav_fn_t fp, void* param1);
void taosCacheRefresh(SCacheObj *pCacheObj, __cache_trav_fn_t fp, void *param1);
/**
* stop background refresh worker thread
@ -188,4 +189,4 @@ void taosStopCacheRefreshWorker();
}
#endif
#endif /*_TD_UTIL_CACHE_H*/
#endif /*_TD_UTIL_CACHE_H_*/

183
source/util/src/tcache.c
View File

@ -14,11 +14,10 @@
*/
#define _DEFAULT_SOURCE
#include "os.h"
#include "tcache.h"
#include "tlog.h"
#include "ttimer.h"
#include "tutil.h"
#include "tcache.h"
static FORCE_INLINE void __cache_wr_lock(SCacheObj *pCacheObj) {
#if defined(LINUX)
@ -62,12 +61,12 @@ static void doCleanupDataCache(SCacheObj *pCacheObj);
* refresh cache to remove data in both hash list and trash, if any nodes' refcount == 0, every pCacheObj->refreshTime
* @param handle Cache object handle
*/
static void* taosCacheTimedRefresh(void *handle);
static void *taosCacheTimedRefresh(void *handle);
static pthread_t cacheRefreshWorker = {0};
static pthread_once_t cacheThreadInit = PTHREAD_ONCE_INIT;
static pthread_mutex_t guard = PTHREAD_MUTEX_INITIALIZER;
static SArray* pCacheArrayList = NULL;
static SArray *pCacheArrayList = NULL;
static bool stopRefreshWorker = false;
static bool refreshWorkerNormalStopped = false;
static bool refreshWorkerUnexpectedStopped = false;
@ -83,7 +82,7 @@ static void doInitRefreshThread(void) {
pthread_attr_destroy(&thattr);
}
pthread_t doRegisterCacheObj(SCacheObj* pCacheObj) {
pthread_t doRegisterCacheObj(SCacheObj *pCacheObj) {
pthread_once(&cacheThreadInit, doInitRefreshThread);
pthread_mutex_lock(&guard);
@ -102,7 +101,8 @@ pthread_t doRegisterCacheObj(SCacheObj* pCacheObj) {
* @param lifespan total survial expiredTime from now
* @return SCacheDataNode
*/
static SCacheDataNode *taosCreateCacheNode(const char *key, size_t keyLen, const char *pData, size_t size, uint64_t duration);
static SCacheDataNode *taosCreateCacheNode(const char *key, size_t keyLen, const char *pData, size_t size,
uint64_t duration);
/**
* addedTime object node into trash, and this object is closed for referencing if it is addedTime to trash
@ -146,13 +146,13 @@ static FORCE_INLINE void taosCacheReleaseNode(SCacheObj *pCacheObj, SCacheDataNo
free(pNode);
}
static FORCE_INLINE STrashElem* doRemoveElemInTrashcan(SCacheObj* pCacheObj, STrashElem *pElem) {
if (pElem->pData->signature != (uint64_t) pElem->pData) {
static FORCE_INLINE STrashElem *doRemoveElemInTrashcan(SCacheObj *pCacheObj, STrashElem *pElem) {
if (pElem->pData->signature != (uint64_t)pElem->pData) {
uWarn("key:sig:0x%" PRIx64 " %p data has been released, ignore", pElem->pData->signature, pElem->pData);
return NULL;
}
STrashElem* next = pElem->next;
STrashElem *next = pElem->next;
pCacheObj->numOfElemsInTrash--;
if (pElem->prev) {
@ -172,7 +172,7 @@ static FORCE_INLINE STrashElem* doRemoveElemInTrashcan(SCacheObj* pCacheObj, STr
return next;
}
static FORCE_INLINE void doDestroyTrashcanElem(SCacheObj* pCacheObj, STrashElem *pElem) {
static FORCE_INLINE void doDestroyTrashcanElem(SCacheObj *pCacheObj, STrashElem *pElem) {
if (pCacheObj->freeFp) {
pCacheObj->freeFp(pElem->pData->data);
}
@ -181,8 +181,9 @@ static FORCE_INLINE void doDestroyTrashcanElem(SCacheObj* pCacheObj, STrashElem
free(pElem);
}
SCacheObj *taosCacheInit(int32_t keyType, int64_t refreshTimeInSeconds, bool extendLifespan, __cache_free_fn_t fn, const char* cacheName) {
const int32_t SLEEP_DURATION = 500; //500 ms
SCacheObj *taosCacheInit(int32_t keyType, int64_t refreshTimeInSeconds, bool extendLifespan, __cache_free_fn_t fn,
const char *cacheName) {
const int32_t SLEEP_DURATION = 500; // 500 ms
if (refreshTimeInSeconds <= 0) {
return NULL;
@ -220,7 +221,8 @@ SCacheObj *taosCacheInit(int32_t keyType, int64_t refreshTimeInSeconds, bool ext
return pCacheObj;
}
void *taosCachePut(SCacheObj *pCacheObj, const void *key, size_t keyLen, const void *pData, size_t dataSize, int durationMS) {
void *taosCachePut(SCacheObj *pCacheObj, const void *key, size_t keyLen, const void *pData, size_t dataSize,
int32_t durationMS) {
if (pCacheObj == NULL || pCacheObj->pHashTable == NULL || pCacheObj->deleting == 1) {
return NULL;
}
@ -242,8 +244,8 @@ void *taosCachePut(SCacheObj *pCacheObj, const void *key, size_t keyLen, const v
(int32_t)taosHashGetSize(pCacheObj->pHashTable), pCacheObj->totalSize, (int64_t)dataSize);
} else { // duplicated key exists
while (1) {
SCacheDataNode* p = NULL;
// int32_t ret = taosHashRemoveWithData(pCacheObj->pHashTable, key, keyLen, (void*) &p, sizeof(void*));
SCacheDataNode *p = NULL;
// int32_t ret = taosHashRemoveWithData(pCacheObj->pHashTable, key, keyLen, (void*) &p, sizeof(void*));
int32_t ret = taosHashRemove(pCacheObj->pHashTable, key, keyLen);
// add to trashcan
@ -283,10 +285,10 @@ void *taosCachePut(SCacheObj *pCacheObj, const void *key, size_t keyLen, const v
return pNode1->data;
}
static void incRefFn(void* ptNode) {
static void incRefFn(void *ptNode) {
assert(ptNode != NULL);
SCacheDataNode** p = (SCacheDataNode**) ptNode;
SCacheDataNode **p = (SCacheDataNode **)ptNode;
assert(T_REF_VAL_GET(*p) >= 0);
int32_t ret = T_REF_INC(*p);
@ -303,15 +305,16 @@ void *taosCacheAcquireByKey(SCacheObj *pCacheObj, const void *key, size_t keyLen
return NULL;
}
SCacheDataNode* ptNode = NULL;
SCacheDataNode *ptNode = NULL;
taosHashGetClone(pCacheObj->pHashTable, key, keyLen, &ptNode);
// taosHashGetClone(pCacheObj->pHashTable, key, keyLen, incRefFn, &ptNode);
// taosHashGetClone(pCacheObj->pHashTable, key, keyLen, incRefFn, &ptNode);
void* pData = (ptNode != NULL)? ptNode->data:NULL;
void *pData = (ptNode != NULL) ? ptNode->data : NULL;
if (pData != NULL) {
atomic_add_fetch_32(&pCacheObj->statistics.hitCount, 1);
uDebug("cache:%s, key:%p, %p is retrieved from cache, refcnt:%d", pCacheObj->name, key, pData, T_REF_VAL_GET(ptNode));
uDebug("cache:%s, key:%p, %p is retrieved from cache, refcnt:%d", pCacheObj->name, key, pData,
T_REF_VAL_GET(ptNode));
} else {
atomic_add_fetch_32(&pCacheObj->statistics.missCount, 1);
uDebug("cache:%s, key:%p, not in cache, retrieved failed", pCacheObj->name, key);
@ -371,7 +374,6 @@ void taosCacheRelease(SCacheObj *pCacheObj, void **data, bool _remove) {
return;
}
// The operation of removal from hash table and addition to trashcan is not an atomic operation,
// therefore the check for the empty of both the hash table and the trashcan has a race condition.
// It happens when there is only one object in the cache, and two threads which has referenced this object
@ -391,20 +393,20 @@ void taosCacheRelease(SCacheObj *pCacheObj, void **data, bool _remove) {
if (pCacheObj->extendLifespan && (!inTrashcan) && (!_remove)) {
atomic_store_64(&pNode->expireTime, pNode->lifespan + taosGetTimestampMs());
uDebug("cache:%s, data:%p extend expire time: %"PRId64, pCacheObj->name, pNode->data, pNode->expireTime);
uDebug("cache:%s, data:%p extend expire time: %" PRId64, pCacheObj->name, pNode->data, pNode->expireTime);
}
if (_remove) {
// NOTE: once refcount is decrease, pNode may be freed by other thread immediately.
char* key = pNode->key;
char* d = pNode->data;
char *key = pNode->key;
char *d = pNode->data;
int32_t ref = T_REF_VAL_GET(pNode);
uDebug("cache:%s, key:%p, %p is released, refcnt:%d, in trashcan:%d", pCacheObj->name, key, d, ref - 1, inTrashcan);
/*
* If it is not referenced by other users, remove it immediately. Otherwise move this node to trashcan wait for all users
* releasing this resources.
* If it is not referenced by other users, remove it immediately. Otherwise move this node to trashcan wait for all
* users releasing this resources.
*
* NOTE: previous ref is 0, and current ref is still 0, remove it. If previous is not 0, there is another thread
* that tries to do the same thing.
@ -434,15 +436,18 @@ void taosCacheRelease(SCacheObj *pCacheObj, void **data, bool _remove) {
// when reaches here.
SCacheDataNode *p = NULL;
int32_t ret = taosHashRemove(pCacheObj->pHashTable, pNode->key, pNode->keySize);
// int32_t ret = taosHashRemoveWithData(pCacheObj->pHashTable, pNode->key, pNode->keySize, &p, sizeof(void *));
// int32_t ret = taosHashRemoveWithData(pCacheObj->pHashTable, pNode->key, pNode->keySize, &p, sizeof(void
// *));
ref = T_REF_DEC(pNode);
// successfully remove from hash table, if failed, this node must have been move to trash already, do nothing.
// note that the remove operation can be executed only once.
if (ret == 0) {
if (p != pNode) {
uDebug( "cache:%s, key:%p, successfully removed a new entry:%p, refcnt:%d, prev entry:%p has been removed by "
"others already", pCacheObj->name, pNode->key, p->data, T_REF_VAL_GET(p), pNode->data);
uDebug(
"cache:%s, key:%p, successfully removed a new entry:%p, refcnt:%d, prev entry:%p has been removed by "
"others already",
pCacheObj->name, pNode->key, p->data, T_REF_VAL_GET(p), pNode->data);
assert(p->pTNodeHeader == NULL);
taosAddToTrashcan(pCacheObj, p);
@ -468,35 +473,36 @@ void taosCacheRelease(SCacheObj *pCacheObj, void **data, bool _remove) {
}
}
} else {
uDebug("cache:%s, key:%p, %p has been removed from hash table by others already, refcnt:%d",
pCacheObj->name, pNode->key, pNode->data, ref);
uDebug("cache:%s, key:%p, %p has been removed from hash table by others already, refcnt:%d", pCacheObj->name,
pNode->key, pNode->data, ref);
}
}
} else {
// NOTE: once refcount is decrease, pNode may be freed by other thread immediately.
char* key = pNode->key;
char* p = pNode->data;
char *key = pNode->key;
char *p = pNode->data;
// int32_t ref = T_REF_VAL_GET(pNode);
//
// if (ref == 1 && inTrashcan) {
// // If it is the last ref, remove it from trashcan linked-list first, and then destroy it.Otherwise, it may be
// // destroyed by refresh worker if decrease ref count before removing it from linked-list.
// assert(pNode->pTNodeHeader->pData == pNode);
//
// __cache_wr_lock(pCacheObj);
// doRemoveElemInTrashcan(pCacheObj, pNode->pTNodeHeader);
// __cache_unlock(pCacheObj);
//
// ref = T_REF_DEC(pNode);
// assert(ref == 0);
//
// doDestroyTrashcanElem(pCacheObj, pNode->pTNodeHeader);
// } else {
// ref = T_REF_DEC(pNode);
// assert(ref >= 0);
// }
// int32_t ref = T_REF_VAL_GET(pNode);
//
// if (ref == 1 && inTrashcan) {
// // If it is the last ref, remove it from trashcan linked-list first, and then destroy it.Otherwise, it may
// be
// // destroyed by refresh worker if decrease ref count before removing it from linked-list.
// assert(pNode->pTNodeHeader->pData == pNode);
//
// __cache_wr_lock(pCacheObj);
// doRemoveElemInTrashcan(pCacheObj, pNode->pTNodeHeader);
// __cache_unlock(pCacheObj);
//
// ref = T_REF_DEC(pNode);
// assert(ref == 0);
//
// doDestroyTrashcanElem(pCacheObj, pNode->pTNodeHeader);
// } else {
// ref = T_REF_DEC(pNode);
// assert(ref >= 0);
// }
int32_t ref = T_REF_DEC(pNode);
uDebug("cache:%s, key:%p, %p released, refcnt:%d, data in trashcan:%d", pCacheObj->name, key, p, ref, inTrashcan);
@ -504,17 +510,17 @@ void taosCacheRelease(SCacheObj *pCacheObj, void **data, bool _remove) {
}
typedef struct SHashTravSupp {
SCacheObj* pCacheObj;
SCacheObj *pCacheObj;
int64_t time;
__cache_trav_fn_t fp;
void* param1;
void *param1;
} SHashTravSupp;
static bool travHashTableEmptyFn(void* param, void* data) {
SHashTravSupp* ps = (SHashTravSupp*) param;
SCacheObj* pCacheObj= ps->pCacheObj;
static bool travHashTableEmptyFn(void *param, void *data) {
SHashTravSupp *ps = (SHashTravSupp *)param;
SCacheObj *pCacheObj = ps->pCacheObj;
SCacheDataNode *pNode = *(SCacheDataNode **) data;
SCacheDataNode *pNode = *(SCacheDataNode **)data;
if (T_REF_VAL_GET(pNode) == 0) {
taosCacheReleaseNode(pCacheObj, pNode);
@ -529,7 +535,7 @@ static bool travHashTableEmptyFn(void* param, void* data) {
void taosCacheEmpty(SCacheObj *pCacheObj) {
SHashTravSupp sup = {.pCacheObj = pCacheObj, .fp = NULL, .time = taosGetTimestampMs()};
// taosHashCondTraverse(pCacheObj->pHashTable, travHashTableEmptyFn, &sup);
// taosHashCondTraverse(pCacheObj->pHashTable, travHashTableEmptyFn, &sup);
taosTrashcanEmpty(pCacheObj, false);
}
@ -542,7 +548,7 @@ void taosCacheCleanup(SCacheObj *pCacheObj) {
// wait for the refresh thread quit before destroying the cache object.
// But in the dll, the child thread will be killed before atexit takes effect.
while(atomic_load_8(&pCacheObj->deleting) != 0) {
while (atomic_load_8(&pCacheObj->deleting) != 0) {
if (refreshWorkerNormalStopped) break;
if (refreshWorkerUnexpectedStopped) return;
taosMsleep(50);
@ -610,16 +616,17 @@ void taosTrashcanEmpty(SCacheObj *pCacheObj, bool force) {
if (pCacheObj->numOfElemsInTrash == 0) {
if (pCacheObj->pTrash != NULL) {
pCacheObj->pTrash = NULL;
uError("cache:%s, key:inconsistency data in cache, numOfElem in trashcan:%d", pCacheObj->name, pCacheObj->numOfElemsInTrash);
uError("cache:%s, key:inconsistency data in cache, numOfElem in trashcan:%d", pCacheObj->name,
pCacheObj->numOfElemsInTrash);
}
__cache_unlock(pCacheObj);
return;
}
const char* stat[] = {"false", "true"};
const char *stat[] = {"false", "true"};
uDebug("cache:%s start to cleanup trashcan, numOfElem in trashcan:%d, free:%s", pCacheObj->name,
pCacheObj->numOfElemsInTrash, (force? stat[1]:stat[0]));
pCacheObj->numOfElemsInTrash, (force ? stat[1] : stat[0]));
STrashElem *pElem = pCacheObj->pTrash;
while (pElem) {
@ -627,8 +634,8 @@ void taosTrashcanEmpty(SCacheObj *pCacheObj, bool force) {
assert(pElem->next != pElem && pElem->prev != pElem);
if (force || (T_REF_VAL_GET(pElem->pData) == 0)) {
uDebug("cache:%s, key:%p, %p removed from trashcan. numOfElem in trashcan:%d", pCacheObj->name, pElem->pData->key, pElem->pData->data,
pCacheObj->numOfElemsInTrash - 1);
uDebug("cache:%s, key:%p, %p removed from trashcan. numOfElem in trashcan:%d", pCacheObj->name, pElem->pData->key,
pElem->pData->data, pCacheObj->numOfElemsInTrash - 1);
doRemoveElemInTrashcan(pCacheObj, pElem);
doDestroyTrashcanElem(pCacheObj, pElem);
@ -642,8 +649,8 @@ void taosTrashcanEmpty(SCacheObj *pCacheObj, bool force) {
}
void doCleanupDataCache(SCacheObj *pCacheObj) {
// SHashTravSupp sup = {.pCacheObj = pCacheObj, .fp = NULL, .time = taosGetTimestampMs()};
// taosHashCondTraverse(pCacheObj->pHashTable, travHashTableEmptyFn, &sup);
// SHashTravSupp sup = {.pCacheObj = pCacheObj, .fp = NULL, .time = taosGetTimestampMs()};
// taosHashCondTraverse(pCacheObj->pHashTable, travHashTableEmptyFn, &sup);
// todo memory leak if there are object with refcount greater than 0 in hash table?
taosHashCleanup(pCacheObj->pHashTable);
@ -656,11 +663,11 @@ void doCleanupDataCache(SCacheObj *pCacheObj) {
free(pCacheObj);
}
bool travHashTableFn(void* param, void* data) {
SHashTravSupp* ps = (SHashTravSupp*) param;
SCacheObj* pCacheObj= ps->pCacheObj;
bool travHashTableFn(void *param, void *data) {
SHashTravSupp *ps = (SHashTravSupp *)param;
SCacheObj *pCacheObj = ps->pCacheObj;
SCacheDataNode* pNode = *(SCacheDataNode **) data;
SCacheDataNode *pNode = *(SCacheDataNode **)data;
if ((int64_t)pNode->expireTime < ps->time && T_REF_VAL_GET(pNode) <= 0) {
taosCacheReleaseNode(pCacheObj, pNode);
@ -676,30 +683,30 @@ bool travHashTableFn(void* param, void* data) {
return true;
}
static void doCacheRefresh(SCacheObj* pCacheObj, int64_t time, __cache_trav_fn_t fp, void* param1) {
static void doCacheRefresh(SCacheObj *pCacheObj, int64_t time, __cache_trav_fn_t fp, void *param1) {
assert(pCacheObj != NULL);
SHashTravSupp sup = {.pCacheObj = pCacheObj, .fp = fp, .time = time, .param1 = param1};
// taosHashCondTraverse(pCacheObj->pHashTable, travHashTableFn, &sup);
// taosHashCondTraverse(pCacheObj->pHashTable, travHashTableFn, &sup);
}
void taosCacheRefreshWorkerUnexpectedStopped(void) {
if(!refreshWorkerNormalStopped) {
refreshWorkerUnexpectedStopped=true;
if (!refreshWorkerNormalStopped) {
refreshWorkerUnexpectedStopped = true;
}
}
void* taosCacheTimedRefresh(void *handle) {
void *taosCacheTimedRefresh(void *handle) {
assert(pCacheArrayList != NULL);
uDebug("cache refresh thread starts");
setThreadName("cacheRefresh");
const int32_t SLEEP_DURATION = 500; //500 ms
const int32_t SLEEP_DURATION = 500; // 500 ms
int64_t count = 0;
atexit(taosCacheRefreshWorkerUnexpectedStopped);
while(1) {
while (1) {
taosMsleep(SLEEP_DURATION);
if (stopRefreshWorker) {
goto _end;
@ -711,9 +718,9 @@ void* taosCacheTimedRefresh(void *handle) {
count += 1;
for(int32_t i = 0; i < size; ++i) {
for (int32_t i = 0; i < size; ++i) {
pthread_mutex_lock(&guard);
SCacheObj* pCacheObj = taosArrayGetP(pCacheArrayList, i);
SCacheObj *pCacheObj = taosArrayGetP(pCacheArrayList, i);
if (pCacheObj == NULL) {
uError("object is destroyed. ignore and try next");
@ -726,8 +733,8 @@ void* taosCacheTimedRefresh(void *handle) {
taosArrayRemove(pCacheArrayList, i);
size = taosArrayGetSize(pCacheArrayList);
uDebug("%s is destroying, remove it from refresh list, remain cache obj:%"PRIzu, pCacheObj->name, size);
pCacheObj->deleting = 0; //reset the deleting flag to enable pCacheObj to continue releasing resources.
uDebug("%s is destroying, remove it from refresh list, remain cache obj:%" PRIzu, pCacheObj->name, size);
pCacheObj->deleting = 0; // reset the deleting flag to enable pCacheObj to continue releasing resources.
pthread_mutex_unlock(&guard);
continue;
@ -757,18 +764,18 @@ void* taosCacheTimedRefresh(void *handle) {
}
}
_end:
_end:
taosArrayDestroy(pCacheArrayList);
pCacheArrayList = NULL;
pthread_mutex_destroy(&guard);
refreshWorkerNormalStopped=true;
refreshWorkerNormalStopped = true;
uDebug("cache refresh thread quits");
return NULL;
}
void taosCacheRefresh(SCacheObj *pCacheObj, __cache_trav_fn_t fp, void* param1) {
void taosCacheRefresh(SCacheObj *pCacheObj, __cache_trav_fn_t fp, void *param1) {
if (pCacheObj == NULL) {
return;
}
@ -777,6 +784,4 @@ void taosCacheRefresh(SCacheObj *pCacheObj, __cache_trav_fn_t fp, void* param1)
doCacheRefresh(pCacheObj, now, fp, param1);
}
void taosStopCacheRefreshWorker(void) {
stopRefreshWorker = true;
}
void taosStopCacheRefreshWorker(void) { stopRefreshWorker = true; }