Profile performance_compare + minor storage profiling improvements

Author: vkarak

reframe/frontend/cli.py

@@ -218,16 +218,19 @@ def __enter__(self):
         return self
 
     def __exit__(self, exc_type, exc_val, exc_tb):
-        logging.getprofiler().print_report(self.__logger.debug)
         if exc_type is SystemExit:
             # Allow users to exit inside the context manager
+            logging.getprofiler().exit_region()
+            logging.getprofiler().print_report(self.__logger.debug)
             return
 
         if isinstance(exc_val, self.__exceptions):
             self.__logger.error(f'{self.__message}: {exc_val}')
             self.__logger.verbose(
                 ''.join(traceback.format_exception(exc_type, exc_val, exc_tb))
             )
+            logging.getprofiler().exit_region()
+            logging.getprofiler().print_report(self.__logger.debug)
             sys.exit(self.__exitcode)
 
 
@@ -1002,15 +1005,12 @@ def restrict_logging():
 
     if options.performance_compare:
         namepatt = '|'.join(options.names)
-        try:
+        with exit_gracefully_on_error('failed to generate performance report',
+                                      printer):
             printer.table(
                 reporting.performance_compare(options.performance_compare,
                                               namepatt=namepatt)
             )
-        except errors.ReframeError as err:
-            printer.error(f'failed to generate performance report: {err}')
-            sys.exit(1)
-        else:
             sys.exit(0)
 
     # Show configuration after everything is set up