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+// timer.h -- helper class for time accounting -*- C++ -*-
+
+// Copyright 2009 Free Software Foundation, Inc.
+// Written by Rafael Avila de Espindola <espindola@google.com>.
+
+// This file is part of gold.
+
+// This program 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 3 of the License, or
+// (at your option) any later version.
+
+// This program 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 this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+// MA 02110-1301, USA.
+
+#ifndef GOLD_TIMER_H
+#define GOLD_TIMER_H
+
+namespace gold
+{
+
+class Timer
+{
+ public:
+ // Used to report time statistics. All fields are in milliseconds.
+ struct TimeStats
+ {
+ /* User time in this process. */
+ long user;
+
+ /* System time in this process. */
+ long sys;
+
+ /* Wall clock time. */
+ long wall;
+ };
+
+ Timer();
+
+ // Return the stats since start was called.
+ TimeStats
+ get_elapsed_time();
+
+ // Start couting the time.
+ void
+ start();
+
+ private:
+ // This class cannot be copied.
+ Timer(const Timer&);
+ Timer& operator=(const Timer&);
+
+ // Write the current time infortamion.
+ static void
+ get_time(TimeStats *now);
+
+ // The time of the last call to start.
+ TimeStats start_time_;
+};
+
+}
+#endif