Add noexcept move constructor to avoid costly copy constructor.

2 files changed, 4 insertions, 1 deletions

diff --git a/vespalog/src/vespa/log/log_message.cpp b/vespalog/src/vespa/log/log_message.cpp
index 10fb77fcf26..e1356ce5f75 100644
--- a/vespalog/src/vespa/log/log_message.cpp
+++ b/vespalog/src/vespa/log/log_message.cpp
@@ -120,9 +120,10 @@ LogMessage::LogMessage(int64_t time_nanos_in,
 {
 }
 
+LogMessage::LogMessage(LogMessage &&) noexcept = default;
+LogMessage & LogMessage::operator=(LogMessage &&) noexcept = default;
 LogMessage::~LogMessage() = default;
 
-
 /* 
  * Parse log line to populate log message class. The parsing is based on
  * LegacyForwarder in logd.
diff --git a/vespalog/src/vespa/log/log_message.h b/vespalog/src/vespa/log/log_message.h
index 12a0ac09443..6966ad04f74 100644
--- a/vespalog/src/vespa/log/log_message.h
+++ b/vespalog/src/vespa/log/log_message.h
@@ -23,6 +23,8 @@ class LogMessage {
 
 public:
     LogMessage();
+    LogMessage(LogMessage &&) noexcept;
+    LogMessage & operator=(LogMessage &&) noexcept;
     LogMessage(int64_t time_nanos_in,
                const std::string& hostname_in,
                int32_t process_id_in,