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Diffstat (limited to 'gold/timer.h')
-rw-r--r-- | gold/timer.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/gold/timer.h b/gold/timer.h new file mode 100644 index 0000000..fca5b12 --- /dev/null +++ b/gold/timer.h @@ -0,0 +1,80 @@ +// timer.h -- helper class for time accounting -*- C++ -*- + +// Copyright (C) 2009-2014 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 |