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