[deliverable/binutils-gdb.git] / gold / timer.h

// timer.h -- helper class for time accounting   -*- C++ -*-

// Copyright (C) 2009-2016 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();

  // Return the stats for pass N (0 <= N <= 2).
  TimeStats
  get_pass_time(int n);

  // Start counting the time.
  void
  start();

  // Record the time used by pass N (0 <= N <= 2).
  void
  stamp(int n);

 private:
  // This class cannot be copied.
  Timer(const Timer&);
  Timer& operator=(const Timer&);

  // Write the current time information.
  static void
  get_time(TimeStats* now);

  // The time of the last call to start.
  TimeStats start_time_;

  // Times for each pass.
  TimeStats pass_times_[3];
};

}
#endif
Commit	Line	Data
	1	// timer.h -- helper class for time accounting -- C++ --
	2
	3	// Copyright (C) 2009-2016 Free Software Foundation, Inc.
	4	// Written by Rafael Avila de Espindola <espindola@google.com>.
	5
	6	// This file is part of gold.
	7
	8	// This program is free software; you can redistribute it and/or modify
	9	// it under the terms of the GNU General Public License as published by
	10	// the Free Software Foundation; either version 3 of the License, or
	11	// (at your option) any later version.
	12
	13	// This program is distributed in the hope that it will be useful,
	14	// but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	// GNU General Public License for more details.
	17
	18	// You should have received a copy of the GNU General Public License
	19	// along with this program; if not, write to the Free Software
	20	// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
	21	// MA 02110-1301, USA.
	22
	23	#ifndef GOLD_TIMER_H
	24	#define GOLD_TIMER_H
	25
	26	namespace gold
	27	{
	28
	29	class Timer
	30	{
	31	public:
	32	// Used to report time statistics. All fields are in milliseconds.
	33	struct TimeStats
	34	{
	35	/* User time in this process. */
	36	long user;
	37
	38	/* System time in this process. */
	39	long sys;
	40
	41	/* Wall clock time. */
	42	long wall;
	43	};
	44
	45	Timer();
	46
	47	// Return the stats since start was called.
	48	TimeStats
	49	get_elapsed_time();
	50
	51	// Return the stats for pass N (0 <= N <= 2).
	52	TimeStats
	53	get_pass_time(int n);
	54
	55	// Start counting the time.
	56	void
	57	start();
	58
	59	// Record the time used by pass N (0 <= N <= 2).
	60	void
	61	stamp(int n);
	62
	63	private:
	64	// This class cannot be copied.
	65	Timer(const Timer&);
	66	Timer& operator=(const Timer&);
	67
	68	// Write the current time information.
	69	static void
	70	get_time(TimeStats* now);
	71
	72	// The time of the last call to start.
	73	TimeStats start_time_;
	74
	75	// Times for each pass.
	76	TimeStats pass_times_[3];
	77	};
	78
	79	}
	80	#endif