2009-12-17 Rafael Avila de Espindola <espindola@google.com>

	* Makefile.am (CCFILES): Add timer.cc.
	(HFILES): Add timer.h.
	* configure.ac: Check for sysconf and times.
	* main.cc: include timer.h.
	(main): Use Timer instead of get_run_time.
	* timer.cc: New.
	* timer.h: New.
	* workqueue.cc: include timer.h.
	(Workqueue::find_and_run_task):
	Report user, sys and wall time.
	* Makefile.in: Regenerate.
	* config.in: Regenerate.
	* configure: Regenerate.

1 files changed, 69 insertions, 0 deletions

diff --git a/gold/timer.h b/gold/timer.h
new file mode 100644
index 0000000..ea360c2
--- /dev/null
+++ b/gold/timer.h
@@ -0,0 +1,69 @@
+// 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