Removed logger::clone() from API

example/example.cpp

@@ -47,7 +47,6 @@ int main(int, char *[])
         basic_example();
         rotating_example();
         daily_example();
-        clone_example();
         async_example();
         binary_example();
         multi_sink_example();
@@ -106,14 +105,6 @@ void daily_example()
     auto daily_logger = spdlog::daily_logger_mt("daily_logger", "logs/daily.txt", 2, 30);
 }
 
-// Clone a logger and give it new name.
-// Useful for creating component/subsystem loggers from some "root" logger.
-void clone_example()
-{
-    auto network_logger = spdlog::default_logger()->clone("network");
-    network_logger->info("Logging network stuff..");
-}
-
 #include "spdlog/async.h"
 void async_example()
 {

include/spdlog/async_logger-inl.h

@@ -78,9 +78,3 @@ SPDLOG_INLINE void spdlog::async_logger::backend_flush_()
     spdlog::logger::flush_();
 }
 
-SPDLOG_INLINE std::shared_ptr<spdlog::logger> spdlog::async_logger::clone(std::string new_name)
-{
-    auto cloned = std::make_shared<spdlog::async_logger>(*this);
-    cloned->name_ = std::move(new_name);
-    return cloned;
-}

include/spdlog/async_logger.h

@@ -49,7 +49,6 @@ public:
     async_logger(std::string logger_name, sink_ptr single_sink, std::weak_ptr<details::thread_pool> tp,
         async_overflow_policy overflow_policy = async_overflow_policy::block);
 
-    std::shared_ptr<logger> clone(std::string new_name) override;
 
 protected:
     void sink_it_(const details::log_msg &msg) override;

include/spdlog/logger-inl.h

@@ -64,7 +64,6 @@ SPDLOG_INLINE void swap(logger &a, logger &b)
     a.swap(b);
 }
 
-
 SPDLOG_INLINE bool logger::should_log(level::level_enum msg_level) const
 {
     return msg_level >= level_.load(std::memory_order_relaxed);
@@ -159,14 +158,6 @@ SPDLOG_INLINE void logger::set_error_handler(err_handler handler)
     custom_err_handler_ = handler;
 }
 
-// create new logger with same sinks and configuration.
-SPDLOG_INLINE std::shared_ptr<logger> logger::clone(std::string logger_name)
-{
-    auto cloned = std::make_shared<logger>(*this);
-    cloned->name_ = std::move(logger_name);
-    return cloned;
-}
-
 // protected methods
 SPDLOG_INLINE void logger::sink_it_(const details::log_msg &msg)
 {

include/spdlog/logger.h

@@ -81,7 +81,7 @@ public:
     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_)
+        if (!level_enabled && !tracer_)
         {
             return;
         }
@@ -90,8 +90,14 @@ public:
             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()));
-            if (level_enabled) sink_it_(log_msg);
-            if (tracer_) backtrace_add_(log_msg);
+            if (level_enabled)
+            {
+                sink_it_(log_msg);
+            }
+            if (tracer_)
+            {
+                backtrace_add_(log_msg);
+            }
         }
         SPDLOG_LOGGER_CATCH()
     }
@@ -149,15 +155,21 @@ public:
     void log(source_loc loc, level::level_enum lvl, const T &msg)
     {
         auto level_enabled = should_log(lvl);
-        if(!level_enabled && !tracer_)
+        if (!level_enabled && !tracer_)
         {
             return;
         }
         SPDLOG_TRY
         {
             details::log_msg log_msg(loc, name_, lvl, msg);
-            if (level_enabled) sink_it_(log_msg);
-            if (tracer_) backtrace_add_(log_msg);
+            if (level_enabled)
+            {
+                sink_it_(log_msg);
+            }
+            if (tracer_)
+            {
+                backtrace_add_(log_msg);
+            }
         }
         SPDLOG_LOGGER_CATCH()
     }
@@ -340,8 +352,6 @@ public:
     // error handler
     void set_error_handler(err_handler);
 
-    // create new logger with same sinks and configuration.
-    virtual std::shared_ptr<logger> clone(std::string logger_name);
 
 protected:
     std::string name_;

include/spdlog/spdlog.h

@@ -285,8 +285,7 @@ inline void critical(wstring_view_t fmt, const Args &... args)
 // SPDLOG_LEVEL_OFF
 //
 
-#define SPDLOG_LOGGER_CALL(logger, level, ...)\
-    logger->log(spdlog::source_loc{__FILE__, __LINE__, SPDLOG_FUNCTION}, level, __VA_ARGS__);                                \
+#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__)

tests/test_misc.cpp

@@ -92,47 +92,6 @@ TEST_CASE("periodic flush", "[periodic_flush]")
     spdlog::drop_all();
 }
 
-TEST_CASE("clone-logger", "[clone]")
-{
-    using namespace spdlog;
-
-    auto logger = spdlog::create<sinks::test_sink_mt>("orig");
-    auto cloned = logger->clone("clone");
-
-    REQUIRE(cloned->name() == "clone");
-    REQUIRE(logger->sinks() == cloned->sinks());
-    REQUIRE(logger->level() == cloned->level());
-    REQUIRE(logger->flush_level() == cloned->flush_level());
-    logger->info("Some message 1");
-    cloned->info("Some message 2");
-
-    auto test_sink = std::static_pointer_cast<sinks::test_sink_mt>(cloned->sinks()[0]);
-
-    spdlog::drop_all();
-}
-
-TEST_CASE("clone async", "[clone]")
-{
-    using namespace spdlog;
-
-    auto logger = spdlog::create_async<sinks::test_sink_mt>("orig");
-    auto cloned = logger->clone("clone");
-
-    REQUIRE(cloned->name() == "clone");
-    REQUIRE(logger->sinks() == cloned->sinks());
-    REQUIRE(logger->level() == cloned->level());
-    REQUIRE(logger->flush_level() == cloned->flush_level());
-
-    logger->info("Some message 1");
-    cloned->info("Some message 2");
-
-    spdlog::details::os::sleep_for_millis(10);
-
-    auto test_sink = std::static_pointer_cast<sinks::test_sink_mt>(cloned->sinks()[0]);
-
-    spdlog::drop_all();
-}
-
 #include "spdlog/fmt/bin_to_hex.h"
 
 TEST_CASE("to_hex", "[to_hex]")