Refactoring to better support backtrace

include/spdlog/details/backtracer.h

@@ -24,7 +24,7 @@ public:
         : messages_{n_message}
     {}
 
-    void add_msg(const log_msg &msg)
+    void add(const log_msg &msg)
     {
         std::lock_guard<std::mutex> lock{mutex_};
         messages_.push_back(log_msg_buffer{msg});

include/spdlog/logger-inl.h

@@ -64,26 +64,6 @@ SPDLOG_INLINE void swap(logger &a, logger &b)
     a.swap(b);
 }
 
-SPDLOG_INLINE void logger::log(source_loc loc, level::level_enum lvl, string_view_t msg)
-{
-    if (tracer_)
-    {
-        save_backtrace_(details::log_msg(loc, string_view_t(name_), lvl, msg));
-    }
-
-    if (!should_log(lvl))
-    {
-        return;
-    }
-
-    details::log_msg log_msg(loc, string_view_t(name_), lvl, msg);
-    sink_it_(log_msg);
-}
-
-SPDLOG_INLINE void logger::log(level::level_enum lvl, string_view_t msg)
-{
-    log(source_loc{}, lvl, msg);
-}
 
 SPDLOG_INLINE bool logger::should_log(level::level_enum msg_level) const
 {
@@ -220,9 +200,9 @@ SPDLOG_INLINE void logger::flush_()
     }
 }
 
-SPDLOG_INLINE void logger::save_backtrace_(const details::log_msg &msg)
+SPDLOG_INLINE void logger::backtrace_add_(const details::log_msg &msg)
 {
-    tracer_->add_msg(msg);
+    tracer_->add(msg);
 }
 
 SPDLOG_INLINE void logger::dump_backtrace_()

include/spdlog/logger.h

@@ -78,40 +78,30 @@ public:
     void swap(spdlog::logger &other) SPDLOG_NOEXCEPT;
 
     template<typename... Args>
-    void force_log(source_loc loc, level::level_enum lvl, string_view_t fmt, const Args &... args)
+    void log(source_loc loc, level::level_enum lvl, string_view_t fmt, const Args &... args)
+    {
+        auto level_enabled = should_log(lvl);
+        if(!level_enabled && !tracer_)
         {
+            return;
+        }
         SPDLOG_TRY
         {
             fmt::memory_buffer buf;
             fmt::format_to(buf, fmt, args...);
             details::log_msg log_msg(loc, name_, lvl, string_view_t(buf.data(), buf.size()));
-            sink_it_(log_msg);
-            if (tracer_)
-            {
-                save_backtrace_(log_msg);
-            }
+            if (level_enabled) sink_it_(log_msg);
+            if (tracer_) backtrace_add_(log_msg);
         }
         SPDLOG_LOGGER_CATCH()
     }
 
-    template<typename... Args>
-    void log(source_loc loc, level::level_enum lvl, string_view_t fmt, const Args &... args)
-    {
-        if (should_log(lvl))
-        {
-            force_log(loc, lvl, fmt, args...);
-        }
-    }
-
     template<typename... Args>
     void log(level::level_enum lvl, string_view_t fmt, const Args &... args)
     {
         log(source_loc{}, lvl, fmt, args...);
     }
 
-    void log(source_loc loc, level::level_enum lvl, const string_view_t msg);
-    void log(level::level_enum lvl, string_view_t msg);
-
     template<typename... Args>
     void trace(string_view_t fmt, const Args &... args)
     {
@@ -158,17 +148,23 @@ public:
     template<class T, typename std::enable_if<std::is_convertible<const T &, spdlog::string_view_t>::value, T>::type * = nullptr>
     void log(source_loc loc, level::level_enum lvl, const T &msg)
     {
-        if (tracer_)
+        auto level_enabled = should_log(lvl);
+        if(!level_enabled && !tracer_)
         {
-            save_backtrace_(details::log_msg(loc, name_, lvl, msg));
+            return;
         }
-        if (!should_log(lvl))
+        SPDLOG_TRY
         {
-            return;
+            details::log_msg log_msg(loc, name_, lvl, msg);
+            if (level_enabled) sink_it_(log_msg);
+            if (tracer_) backtrace_add_(log_msg);
+        }
+        SPDLOG_LOGGER_CATCH()
     }
 
-        details::log_msg log_msg(loc, name_, lvl, msg);
-        sink_it_(log_msg);
+    void log(level::level_enum lvl, string_view_t msg)
+    {
+        log(source_loc{}, lvl, msg);
     }
 
     // T cannot be statically converted to string_view or wstring_view
@@ -177,25 +173,7 @@ public:
                           T>::type * = nullptr>
     void log(source_loc loc, level::level_enum lvl, const T &msg)
     {
-        if (tracer_)
-        {
-            fmt::memory_buffer buf;
-            fmt::format_to(buf, "{}", msg);
-            save_backtrace_(details::log_msg(loc, name_, lvl, string_view_t(buf.data(), buf.size())));
-        }
-
-        if (!should_log(lvl))
-        {
-            return;
-        }
-        SPDLOG_TRY
-        {
-            fmt::memory_buffer buf;
-            fmt::format_to(buf, "{}", msg);
-            details::log_msg log_msg(loc, name_, lvl, string_view_t(buf.data(), buf.size()));
-            sink_it_(log_msg);
-        }
-        SPDLOG_LOGGER_CATCH()
+        log(loc, lvl, "{}", msg);
     }
 
     template<typename T>
@@ -376,7 +354,7 @@ protected:
     virtual void sink_it_(const details::log_msg &msg);
     virtual void flush_();
 
-    void save_backtrace_(const details::log_msg &msg);
+    void backtrace_add_(const details::log_msg &msg);
     void dump_backtrace_();
     bool should_flush_(const details::log_msg &msg);
 

include/spdlog/spdlog.h

@@ -285,12 +285,8 @@ inline void critical(wstring_view_t fmt, const Args &... args)
 // SPDLOG_LEVEL_OFF
 //
 
-#define SPDLOG_LOGGER_CALL(logger, level, ...)                                                                                             \
-    do                                                                                                                                     \
-    {                                                                                                                                      \
-        if (logger->should_log(level))                                                                                                     \
-            logger->force_log(spdlog::source_loc{__FILE__, __LINE__, SPDLOG_FUNCTION}, level, __VA_ARGS__);                                \
-    } while (0)
+#define SPDLOG_LOGGER_CALL(logger, level, ...)\
+    logger->log(spdlog::source_loc{__FILE__, __LINE__, SPDLOG_FUNCTION}, level, __VA_ARGS__);                                \
 
 #if SPDLOG_ACTIVE_LEVEL <= SPDLOG_LEVEL_TRACE
 #define SPDLOG_LOGGER_TRACE(logger, ...) SPDLOG_LOGGER_CALL(logger, spdlog::level::trace, __VA_ARGS__)