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Merge pull request #6870 from junli1026/jun/add-guard-rail 

Add some guardrails
This commit is contained in:
Haojun Liao 2021-07-16 14:13:11 +08:00 committed by GitHub
parent 2d6ad4d87b cc8744f1db
commit 5ab2b2b1cd
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 26 additions and 6 deletions
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32
src/util/src/tqueue.c
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@ -173,10 +173,12 @@ int taosReadAllQitems(taos_queue param, taos_qall p2) {
STaosQueue *queue = (STaosQueue *)param;
STaosQall *qall = (STaosQall *)p2;
int code = 0;
bool empty;
pthread_mutex_lock(&queue->mutex);
if (queue->head) {
empty = queue->head == NULL;
if (!empty) {
memset(qall, 0, sizeof(STaosQall));
qall->current = queue->head;
qall->start = queue->head;
@ -188,11 +190,17 @@ int taosReadAllQitems(taos_queue param, taos_qall p2) {
queue->tail = NULL;
queue->numOfItems = 0;
if (queue->qset) atomic_sub_fetch_32(&queue->qset->numOfItems, qall->numOfItems);
}
}
pthread_mutex_unlock(&queue->mutex);
return code;
// if source queue is empty, we set destination qall to empty too.
if (empty) {
qall->current = NULL;
qall->start = NULL;
qall->numOfItems = 0;
}
return code;
}
int taosGetQitem(taos_qall param, int *type, void **pitem) {
@ -423,10 +431,22 @@ int taosReadAllQitemsFromQset(taos_qset param, taos_qall p2, void **phandle) {
int taosGetQueueItemsNumber(taos_queue param) {
STaosQueue *queue = (STaosQueue *)param;
return queue->numOfItems;
if (!queue) return 0;
int num;
pthread_mutex_lock(&queue->mutex);
num = queue->numOfItems;
pthread_mutex_unlock(&queue->mutex);
return num;
}
int taosGetQsetItemsNumber(taos_qset param) {
STaosQset *qset = (STaosQset *)param;
return qset->numOfItems;
if (!qset) return 0;
int num = 0;
pthread_mutex_lock(&qset->mutex);
num = qset->numOfItems;
pthread_mutex_unlock(&qset->mutex);
return num;
}