fix perf regression in tracing layer

In the current tracing layer, the parameters of the function
being called are always printed to a string stream that may
be used for logging. However, if logs are disabled, this
just unnecessarily wastes times.

scripts/templates/trcddi.cpp.mako

@@ -45,15 +45,19 @@ namespace ur_tracing_layer
         ${th.make_pfncb_param_type(n, tags, obj)} params = { &${",&".join(th.make_param_lines(n, tags, obj, format=["name"]))} };
         uint64_t instance = getContext()->notify_begin(${th.make_func_etor(n, tags, obj)}, "${th.make_func_name(n, tags, obj)}", &params);
 
-        getContext()->logger.info("---> ${th.make_func_name(n, tags, obj)}");
+        auto &logger = getContext()->logger;
+
+        logger.info("---> ${th.make_func_name(n, tags, obj)}");
 
         ${x}_result_t result = ${th.make_pfn_name(n, tags, obj)}( ${", ".join(th.make_param_lines(n, tags, obj, format=["name"]))} );
 
         getContext()->notify_end(${th.make_func_etor(n, tags, obj)}, "${th.make_func_name(n, tags, obj)}", &params, &result, instance);
 
-        std::ostringstream args_str;
-        ur::extras::printFunctionParams(args_str, ${th.make_func_etor(n, tags, obj)}, &params);
-        getContext()->logger.info("({}) -> {};\n", args_str.str(), result);
+        if (logger.getLevel() <= logger::Level::INFO) {
+            std::ostringstream args_str;
+            ur::extras::printFunctionParams(args_str, ${th.make_func_etor(n, tags, obj)}, &params);
+            logger.info("({}) -> {};\n", args_str.str(), result);
+        }
 
         return result;
     }

source/common/logger/ur_logger_details.hpp

@@ -30,6 +30,8 @@ class Logger {
 
     void setLevel(logger::Level level) { this->level = level; }
 
+    logger::Level getLevel() { return this->level; }
+
     void setFlushLevel(logger::Level level) {
         if (sink) {
             this->sink->setFlushLevel(level);