enh: refactor return code

include/os/osMemory.h

@@ -65,6 +65,16 @@ void   *taosMemoryMallocAlign(uint32_t alignment, int64_t size);
     }                              \
   } while (0)
 
+#define TAOS_MEMORY_REALLOC(ptr, len)          \
+  do {                                         \
+    void *tmp = taosMemoryRealloc(ptr, (len)); \
+    if (tmp) {                                 \
+      (ptr) = tmp;                             \
+    } else {                                   \
+      taosMemoryFreeClear(ptr);                \
+    }                                          \
+  } while (0)
+
 #ifdef __cplusplus
 }
 #endif

include/util/tutil.h

@@ -157,18 +157,18 @@ static FORCE_INLINE int32_t taosGetTbHashVal(const char *tbname, int32_t tblen,
     return (terrno = (code)); \
   } while (0)
 
-#define TAOS_CHECK_RETURN(CMD)       \
-  do {                               \
-    int32_t code = (CMD);            \
-    if (code != TSDB_CODE_SUCCESS) { \
-      TAOS_RETURN(code);             \
-    }                                \
+#define TAOS_CHECK_RETURN(CMD)      \
+  do {                              \
+    int32_t code = (CMD);           \
+    if (code < TSDB_CODE_SUCCESS) { \
+      TAOS_RETURN(code);            \
+    }                               \
   } while (0)
 
 #define TAOS_CHECK_GOTO(CMD, LINO, LABEL) \
   do {                                    \
     code = (CMD);                         \
-    if (code != TSDB_CODE_SUCCESS) {      \
+    if (code < TSDB_CODE_SUCCESS) {       \
       if (LINO) {                         \
         *((int32_t *)(LINO)) = __LINE__;  \
       }                                   \

source/common/src/trow.c

@@ -535,7 +535,7 @@ int32_t tdSTSRowNew(SArray *pArray, STSchema *pTSchema, STSRow **ppRow, int8_t r
 
 _exit:
   taosMemoryFreeClear(varBuf);
-  if (code != 0) {
+  if (code < 0) {
     if (isAlloc) {
       taosMemoryFreeClear(*ppRow);
     }

source/dnode/mgmt/node_mgmt/src/dmMgmt.c

@@ -182,7 +182,7 @@ int32_t dmInitVars(SDnode *pDnode) {
       code = 0;
       strncpy(tsEncryptKey, tsAuthCode, 16);
 
-      if(code != 0) {
+      if (code != 0) {
         if(code == -1){
           terrno = TSDB_CODE_DNODE_NO_ENCRYPT_KEY;
           dError("machine code changed, can't get crypt key");

source/dnode/mnode/impl/src/mndDb.c

@@ -735,8 +735,9 @@ static int32_t mndSetCreateDbUndoActions(SMnode *pMnode, STrans *pTrans, SDbObj
 }
 
 static int32_t mndCreateDb(SMnode *pMnode, SRpcMsg *pReq, SCreateDbReq *pCreate, SUserObj *pUser) {
-  int32_t code = -1;
-  SDbObj dbObj = {0};
+  int32_t  code = 0;
+  SUserObj newUserObj = {0};
+  SDbObj   dbObj = {0};
   memcpy(dbObj.name, pCreate->db, TSDB_DB_FNAME_LEN);
   memcpy(dbObj.acct, pUser->acct, TSDB_USER_LEN);
   dbObj.createdTime = taosGetTimestampMs();
@@ -816,7 +817,7 @@ static int32_t mndCreateDb(SMnode *pMnode, SRpcMsg *pReq, SCreateDbReq *pCreate,
   }
 
   // add database privileges for user
-  SUserObj newUserObj = {0}, *pNewUserDuped = NULL;
+  SUserObj *pNewUserDuped = NULL;
   if (!pUser->superUser) {
     TAOS_CHECK_GOTO(mndUserDupObj(pUser, &newUserObj), NULL, _OVER);
     taosHashPut(newUserObj.readDbs, dbObj.name, strlen(dbObj.name) + 1, dbObj.name, TSDB_FILENAME_LEN);
@@ -845,8 +846,6 @@ static int32_t mndCreateDb(SMnode *pMnode, SRpcMsg *pReq, SCreateDbReq *pCreate,
   TAOS_CHECK_GOTO(mndSetCreateDbUndoActions(pMnode, pTrans, &dbObj, pVgroups), NULL, _OVER);
   TAOS_CHECK_GOTO(mndTransPrepare(pMnode, pTrans), NULL, _OVER);
 
-  code = 0;
-
 _OVER:
   taosMemoryFree(pVgroups);
   mndUserFreeObj(&newUserObj);