trace_if and debug_if macro added

example/example.cpp

@@ -6,6 +6,10 @@
 // spdlog usage example
 //
 //
+
+#define SPDLOG_TRACE_ON
+#define SPDLOG_DEBUG_ON
+
 #include "spdlog/spdlog.h"
 
 #include <iostream>
@@ -40,6 +44,8 @@ int main(int, char*[])
         console->info("Positional args are {1} {0}..", "too", "supported");
         console->info("{:<30}", "left aligned");
 
+        SPDLOG_DEBUG_IF(console, true, "This is a debug log");
+
 
         spd::get("console")->info("loggers can be retrieved from a global registry using the spdlog::get(logger_name) function");
 
@@ -74,6 +80,8 @@ int main(int, char*[])
         // define SPDLOG_DEBUG_ON or SPDLOG_TRACE_ON
         SPDLOG_TRACE(console, "Enabled only #ifdef SPDLOG_TRACE_ON..{} ,{}", 1, 3.23);
         SPDLOG_DEBUG(console, "Enabled only #ifdef SPDLOG_DEBUG_ON.. {} ,{}", 1, 3.23);
+        SPDLOG_DEBUG_IF(console, true, "This is a debug log");
+
 
         // Asynchronous logging is very fast..
         // Just call spdlog::set_async_mode(q_size) and all created loggers from now on will be asynchronous..

include/spdlog/spdlog.h

@@ -162,23 +162,25 @@ void drop_all();
 // SPDLOG_TRACE(my_logger, "some trace message");
 // SPDLOG_TRACE(my_logger, "another trace message {} {}", 1, 2);
 // SPDLOG_DEBUG(my_logger, "some debug message {} {}", 3, 4);
+// SPDLOG_DEBUG_IF(my_logger, true, "some debug message {} {}", 3, 4);
 ///////////////////////////////////////////////////////////////////////////////
 
 #ifdef SPDLOG_TRACE_ON
 #define SPDLOG_STR_H(x) #x
 #define SPDLOG_STR_HELPER(x) SPDLOG_STR_H(x)
 #define SPDLOG_TRACE(logger, ...) logger->trace("[" __FILE__ " line #" SPDLOG_STR_HELPER(__LINE__) "] " __VA_ARGS__)
+#define SPDLOG_TRACE_IF(logger, flag, ...) logger->trace_if(flag, "[" __FILE__ " line #" SPDLOG_STR_HELPER(__LINE__) "] " __VA_ARGS__)
 #else
 #define SPDLOG_TRACE(logger, ...)
 #endif
 
 #ifdef SPDLOG_DEBUG_ON
 #define SPDLOG_DEBUG(logger, ...) logger->debug(__VA_ARGS__)
+#define SPDLOG_DEBUG_IF(logger, flag, ...) logger->debug_if(flag, __VA_ARGS__)
 #else
 #define SPDLOG_DEBUG(logger, ...)
 #endif
 
-
 }