fix

XiaoMi · Jul 7, 2020 · 0fb9a45 · 0fb9a45
1 parent 3079aac
commit 0fb9a45
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/src/core/core/logging.cpp b/src/core/core/logging.cpp
@@ -41,10 +41,10 @@ DSN_DEFINE_bool("core", logging_flush_on_exit, true, "flush log when exit system
 
 namespace dsn {
 std::function<std::string()> log_prefixed_message_func = []() {
+    static thread_local std::string prefixed_message(' ', 23);
     int tid = dsn::utils::get_current_tid();
-    char res[25];
-    sprintf(res, "unknown.io-thrd.%05d: ", tid);
-    return std::string(res);
+    sprintf(const_cast<char *>(prefixed_message.c_str()), "unknown.io-thrd.%05d: ", tid);
+    return prefixed_message;
 };
 
 void set_log_prefixed_message_func(std::function<std::string()> func)