+(* Copyright (C) 2000, HELM Team.
+ *
+ * This file is part of HELM, an Hypertextual, Electronic
+ * Library of Mathematics, developed at the Computer Science
+ * Department, University of Bologna, Italy.
+ *
+ * HELM is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * HELM is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with HELM; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ *
+ * For details, see the HELM World-Wide-Web page,
+ * http://cs.unibo.it/helm/.
+ *)
+
+
+(** PROFILING *)
+
+let profiling_enabled = true
+
+type profiler = { profile : 'a 'b. ('a -> 'b) -> 'a -> 'b }
+let profile =
+ if profiling_enabled then
+ function s ->
+ let total = ref 0.0 in
+ let profile f x =
+ let before = Unix.gettimeofday () in
+ try
+ let res = f x in
+ let after = Unix.gettimeofday () in
+ total := !total +. (after -. before);
+ res
+ with
+ exc ->
+ let after = Unix.gettimeofday () in
+ total := !total +. (after -. before);
+ raise exc
+ in
+ at_exit
+ (fun () ->
+ print_endline
+ ("!! TOTAL TIME SPENT IN " ^ s ^ ": " ^ string_of_float !total));
+ { profile = profile }
+ else
+ function _ -> { profile = fun f x -> f x }
+