if the map is small do a sequential search, otherwise use the standard find()

Author: gabime

src/details/registry.cpp

@@ -68,15 +68,27 @@ namespace spdlog {
             }
         }
 
+        // if the map is small do a sequential search, otherwise use the standard find()
         std::shared_ptr<logger> registry::get(const std::string &logger_name) {
-            std::lock_guard<std::mutex> lock(logger_map_mutex_);
-            auto found = loggers_.find(logger_name);
-            return found == loggers_.end() ? nullptr : found->second;
+            if (loggers_.size() <= 20) {
+                for (const auto &[key, val]: loggers_) {
+                    if (logger_name == key) {
+                        return val;
+                    }
+                }
+                return nullptr;
+            }
+            else {
+                auto found = loggers_.find(logger_name);
+                return found == loggers_.end() ? nullptr : found->second;
+            }
         }
 
+        // if the map is small do a sequential search and avoid creating string for find(logger_name)
+        // otherwise use the standard find()
         std::shared_ptr<logger> registry::get(std::string_view logger_name) {
             std::lock_guard<std::mutex> lock(logger_map_mutex_);
-            // if the map is small do a sequential search to avoid creating string for find(logger_name)
+
             if (loggers_.size() <= 20) {
                 for (const auto &[key, val]: loggers_) {
                     if (logger_name == key) {