1 /** @file cputimer.h 2 * @brief Measure CPU time. 3 */ 4 /* Copyright (C) 2009 Olly Betts 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation; either version 2 of the 9 * License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21 #ifndef XAPIAN_INCLUDED_CPUTIMER_H 22 #define XAPIAN_INCLUDED_CPUTIMER_H 23 24 class CPUTimer { 25 double start; 26 27 double get_current_cputime() const; 28 29 public: 30 /// Start the timer. CPUTimer()31 CPUTimer() : start(get_current_cputime()) { } 32 33 /// Return elapsed CPU time since object creation in seconds. get_time()34 double get_time() const { 35 return get_current_cputime() - start; 36 } 37 }; 38 39 #endif // XAPIAN_INCLUDED_CPUTIMER_H 40