From d744ef4a33ccfd1aa0404dda938d729d5a2f7817 Mon Sep 17 00:00:00 2001
From: Xu Peng <xupeng3112@163.com>
Date: Mon, 27 May 2019 10:35:41 +0800
Subject: [PATCH] fix(db): replace locatime with locatime_r for thread safe
 concern

Former-commit-id: 1b857e297c3b26e2730f86c67e8dc798755493fe
---
 cpp/src/db/Meta.cpp | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/cpp/src/db/Meta.cpp b/cpp/src/db/Meta.cpp
index 31fdee74..3d272e06 100644
--- a/cpp/src/db/Meta.cpp
+++ b/cpp/src/db/Meta.cpp
@@ -4,6 +4,7 @@
  * Proprietary and confidential.
  ******************************************************************************/
 #include <ctime>
+#include <stdio.h>
 #include "Meta.h"
 
 namespace zilliz {
@@ -12,23 +13,24 @@ namespace engine {
 namespace meta {
 
 DateT Meta::GetDate(const std::time_t& t, int day_delta) {
-    tm *ltm = std::localtime(&t);
+    struct tm ltm;
+    localtime_r(&t, &ltm);
     if (day_delta > 0) {
         do {
-            ++ltm->tm_mday;
+            ++ltm.tm_mday;
             --day_delta;
         } while(day_delta > 0);
-        mktime(ltm);
+        mktime(&ltm);
     } else if (day_delta < 0) {
         do {
-            --ltm->tm_mday;
+            --ltm.tm_mday;
             ++day_delta;
         } while(day_delta < 0);
-        mktime(ltm);
+        mktime(&ltm);
     } else {
-        ltm->tm_mday;
+        ltm.tm_mday;
     }
-    return ltm->tm_year*10000 + ltm->tm_mon*100 + ltm->tm_mday;
+    return ltm.tm_year*10000 + ltm.tm_mon*100 + ltm.tm_mday;
 }
 
 DateT Meta::GetDateWithDelta(int day_delta) {
-- 
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