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set pNode->next to null, since item may be write into queue multiple times

This commit is contained in:
Jeff Tao 2020-05-29 12:58:29 +00:00
parent 706b535c61
commit 356e386a5b
1 changed files with 4 additions and 1 deletions
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5
src/util/src/tqueue.c
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@ -95,6 +95,7 @@ void *taosAllocateQitem(int size) {
void taosFreeQitem(void *param) {
if (param == NULL) return;
uTrace("item:%p is freed", param);
char *temp = (char *)param;
temp -= sizeof(STaosQnode);
free(temp);
@ -104,6 +105,7 @@ int taosWriteQitem(taos_queue param, int type, void *item) {
STaosQueue *queue = (STaosQueue *)param;
STaosQnode *pNode = (STaosQnode *)(((char *)item) - sizeof(STaosQnode));
pNode->type = type;
pNode->next = NULL;
pthread_mutex_lock(&queue->mutex);
@ -143,7 +145,7 @@ int taosReadQitem(taos_queue param, int *type, void **pitem) {
queue->numOfItems--;
if (queue->qset) atomic_sub_fetch_32(&queue->qset->numOfItems, 1);
code = 1;
uTrace("item:%p is read out from queue, items:%d", *pitem, queue->numOfItems);
uTrace("item:%p is read out from queue:%p, type:%d items:%d", *pitem, *type, queue->numOfItems);
}
pthread_mutex_unlock(&queue->mutex);
@ -337,6 +339,7 @@ int taosReadQitemFromQset(taos_qset param, int *type, void **pitem, void **phand
queue->numOfItems--;
atomic_sub_fetch_32(&qset->numOfItems, 1);
code = 1;
uTrace("item:%p is read out from queue:%p, type:%d items:%d", *pitem, queue, *type, queue->numOfItems);
}
pthread_mutex_unlock(&queue->mutex);