[logging] Move Driver perf stats to driver_stats directory

Reviewed By: dulmarod

Differential Revision: D7194296

fbshipit-source-id: 28b03c5

infer/src/base/Config.ml

@@ -176,6 +176,8 @@ let default_in_zip_results_dir = "infer"
 (** Dotty output filename **)
 let dotty_output = "icfg.dot"
 
+let driver_stats_dir_name = "driver_stats"
+
 let duplicates_filename = "duplicates.txt"
 
 let events_dir_name = "events"

infer/src/base/Config.mli

@@ -91,6 +91,8 @@ val classpath : string option
 
 val cpp_extra_include_dir : string
 
+val driver_stats_dir_name : string
+
 val duplicates_filename : string
 
 val relative_cpp_models_dir : string

infer/src/integration/Driver.ml

@@ -128,7 +128,7 @@ let clean_results_dir () =
 
 let register_perf_stats_report () =
   let filename = F.sprintf "%s.json" Config.perf_stats_prefix in
-  PerfStats.register_report_at_exit filename Config.backend_stats_dir_name
+  PerfStats.register_report_at_exit filename Config.driver_stats_dir_name
 
 
 let reset_duplicates_file () =