[td-225] add log if malloc failed.

src/common/src/tdataformat.c

@@ -13,6 +13,7 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 #include "tdataformat.h"
+#include "tulog.h"
 #include "talgo.h"
 #include "tcoding.h"
 #include "wchar.h"
@@ -311,10 +312,14 @@ void dataColSetOffset(SDataCol *pCol, int nEle) {
 
 SDataCols *tdNewDataCols(int maxRowSize, int maxCols, int maxRows) {
   SDataCols *pCols = (SDataCols *)calloc(1, sizeof(SDataCols));
-  if (pCols == NULL) return NULL;
+  if (pCols == NULL) {
+    uDebug("malloc failure, size:%"PRId64" failed, reason:%s", sizeof(SDataCols), strerror(errno));
+    return NULL;
+  }
 
   pCols->cols = (SDataCol *)calloc(maxCols, sizeof(SDataCol));
   if (pCols->cols == NULL) {
+    uDebug("malloc failure, size:%"PRId64" failed, reason:%s", sizeof(SDataCol) * maxCols, strerror(errno));
     tdFreeDataCols(pCols);
     return NULL;
   }
@@ -326,6 +331,7 @@ SDataCols *tdNewDataCols(int maxRowSize, int maxCols, int maxRows) {
 
   pCols->buf = malloc(pCols->bufSize);
   if (pCols->buf == NULL) {
+    uDebug("malloc failure, size:%"PRId64" failed, reason:%s", sizeof(SDataCol) * maxCols, strerror(errno));
     tdFreeDataCols(pCols);
     return NULL;
   }