From c5ea31316daa81c17c25c851032ce242868b518c Mon Sep 17 00:00:00 2001
From: zhagnlu <1542303831@qq.com>
Date: Sat, 14 Oct 2023 12:10:05 +0800
Subject: [PATCH] Fix glog thread-safe bug for standalone mode (#27703)

Signed-off-by: luzhang <luzhang@zilliz.com>
Co-authored-by: luzhang <luzhang@zilliz.com>
---
 internal/core/src/segcore/segcore_init_c.cpp | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/internal/core/src/segcore/segcore_init_c.cpp b/internal/core/src/segcore/segcore_init_c.cpp
index fefe455c25786..5ebf53f651f01 100644
--- a/internal/core/src/segcore/segcore_init_c.cpp
+++ b/internal/core/src/segcore/segcore_init_c.cpp
@@ -15,6 +15,9 @@
 #include "segcore/segcore_init_c.h"
 
 namespace milvus::segcore {
+
+std::once_flag close_glog_once;
+
 extern "C" void
 SegcoreInit(const char* conf_file) {
     milvus::config::KnowhereInitImpl(conf_file);
@@ -72,9 +75,11 @@ SegcoreSetSimdType(const char* value) {
 
 extern "C" void
 SegcoreCloseGlog() {
-    if (google::IsGoogleLoggingInitialized()) {
-        google::ShutdownGoogleLogging();
-    }
+    std::call_once(close_glog_once, [&]() {
+        if (google::IsGoogleLoggingInitialized()) {
+            google::ShutdownGoogleLogging();
+        }
+    });
 }
 
 extern "C" int32_t