1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
/* -*- mode: C -*- */
/*
IGraph library.
Copyright (C) 2013 Gabor Csardi <csardi.gabor@gmail.com>
334 Harvard st, Cambridge MA, 02139 USA
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 2 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 IGRAPH_BENCH_H
#define IGRAPH_BENCH_H
#include <sys/resource.h>
static inline void igraph_get_cpu_time(igraph_real_t *data) {
struct rusage self, children;
getrusage(RUSAGE_SELF, &self);
getrusage(RUSAGE_CHILDREN, &children);
data[0] = (double) self.ru_utime.tv_sec +
1e-3 * (self.ru_utime.tv_usec / 1000);
data[1] = (double) self.ru_stime.tv_sec +
1e-3 * (self.ru_stime.tv_usec / 1000);
data[2] = (double) children.ru_utime.tv_sec +
1e-3 * (children.ru_utime.tv_usec / 1000);
data[3] = (double) children.ru_stime.tv_sec +
1e-3 * (children.ru_stime.tv_usec / 1000);
}
#define BENCH(NAME, ...) do { \
double start[4], stop[4]; \
igraph_get_cpu_time(start); \
{ __VA_ARGS__; }; \
igraph_get_cpu_time(stop); \
printf("%s %.3gs\n", NAME, \
stop[0]+stop[1]+stop[2]+stop[3] - \
start[0]-start[1]-start[2]-start[3]); \
} while (0)
#endif
|
