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taos_fetch_row cannot be called before the query callback ends.

This commit is contained in:
factosea 2023-12-06 18:44:55 +08:00
parent c95c567376
commit d17d51194f
4 changed files with 15 additions and 4 deletions
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1
source/client/inc/clientInt.h
View File

@ -273,6 +273,7 @@ typedef struct SRequestObj {
bool killed;
bool inRetry;
bool isSubReq;
bool inCallback;
uint32_t prevCode; // previous error code: todo refactor, add update flag for catalog
uint32_t retry;
int64_t allocatorRefId;

2
source/client/src/clientImpl.c
View File

@ -2607,7 +2607,9 @@ void taosAsyncFetchImpl(SRequestObj* pRequest, __taos_async_fn_t fp, void* param
}
void doRequestCallback(SRequestObj* pRequest, int32_t code) {
pRequest->inCallback = true;
pRequest->body.queryFp(((SSyncQueryParam *)pRequest->body.interParam)->userParam, pRequest, code);
pRequest->inCallback = false;
}
int32_t clientParseSql(void* param, const char* dbName, const char* sql, bool parseOnly, const char* effectiveUser, SParseSqlRes* pRes) {

6
source/client/src/clientMain.c
View File

@ -418,6 +418,12 @@ TAOS_ROW taos_fetch_row(TAOS_RES *res) {
return NULL;
}
if(pRequest->inCallback) {
tscError("can not call taos_fetch_row before query callback ends.");
terrno = TSDB_CODE_TSC_INVALID_OPERATION;
return NULL;
}
return doAsyncFetchRows(pRequest, true, true);
} else if (TD_RES_TMQ(res) || TD_RES_TMQ_METADATA(res)) {
SMqRspObj *msg = ((SMqRspObj *)res);

10
tests/taosc_test/taoscTest.cpp
View File

@ -190,10 +190,12 @@ void queryCallback2(void* param, void* res, int32_t code) {
ASSERT_TRUE(param == pUserParam);
// After using taos_query_a to query, using taos_fetch_row in the callback will cause blocking.
// Reason: schProcessOnCbBegin SCH_LOCK_TASK(pTask)
/* TAOS_ROW row;
while ((row = taos_fetch_row(res))) {
getRecordCounts++;
} */
TAOS_ROW row;
row = taos_fetch_row(res);
ASSERT_TRUE(row == NULL);
int* errCode = taosGetErrno();
ASSERT_TRUE(*errCode = TSDB_CODE_TSC_INVALID_OPERATION);
tsem_post(&query_sem);
taos_free_result(res);
}