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81 lines
1.8 KiB
C++
81 lines
1.8 KiB
C++
// timer.h -- helper class for time accounting -*- C++ -*-
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// Copyright (C) 2009-2021 Free Software Foundation, Inc.
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// Written by Rafael Avila de Espindola <espindola@google.com>.
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// This file is part of gold.
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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// MA 02110-1301, USA.
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#ifndef GOLD_TIMER_H
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#define GOLD_TIMER_H
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namespace gold
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{
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class Timer
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{
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public:
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// Used to report time statistics. All fields are in milliseconds.
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struct TimeStats
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{
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/* User time in this process. */
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long user;
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/* System time in this process. */
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long sys;
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/* Wall clock time. */
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long wall;
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};
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Timer();
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// Return the stats since start was called.
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TimeStats
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get_elapsed_time();
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// Return the stats for pass N (0 <= N <= 2).
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TimeStats
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get_pass_time(int n);
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// Start counting the time.
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void
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start();
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// Record the time used by pass N (0 <= N <= 2).
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void
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stamp(int n);
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private:
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// This class cannot be copied.
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Timer(const Timer&);
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Timer& operator=(const Timer&);
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// Write the current time information.
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static void
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get_time(TimeStats* now);
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// The time of the last call to start.
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TimeStats start_time_;
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// Times for each pass.
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TimeStats pass_times_[3];
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};
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}
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#endif
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