Add get_max_size() and set_max_size() methods to rotating_file_sink class.

Signed-off-by: Vitalii Koshura <lestat.de.lionkur@gmail.com>

include/spdlog/sinks/rotating_file_sink-inl.h

@@ -71,6 +71,24 @@ SPDLOG_INLINE filename_t rotating_file_sink<Mutex>::filename()
     return file_helper_.filename();
 }
 
+template<typename Mutex>
+SPDLOG_INLINE std::size_t rotating_file_sink<Mutex>::get_max_size() const
+{
+    std::lock_guard<Mutex> lock(base_sink<Mutex>::mutex_);
+    return max_size_;
+}
+
+template<typename Mutex>
+SPDLOG_INLINE void rotating_file_sink<Mutex>::set_max_size(const std::size_t max_size)
+{
+    std::lock_guard<Mutex> lock(base_sink<Mutex>::mutex_);
+    if (max_size == 0)
+    {
+        throw_spdlog_ex("rotating sink set_max_size: max_size cannot be zero");
+    }
+    max_size_ = max_size;
+}
+
 template<typename Mutex>
 SPDLOG_INLINE void rotating_file_sink<Mutex>::sink_it_(const details::log_msg &msg)
 {

include/spdlog/sinks/rotating_file_sink.h

@@ -26,6 +26,8 @@ public:
         const file_event_handlers &event_handlers = {});
     static filename_t calc_filename(const filename_t &filename, std::size_t index);
     filename_t filename();
+    std::size_t get_max_size() const;
+    void set_max_size(const std::size_t max_size);
 
 protected:
     void sink_it_(const details::log_msg &msg) override;