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
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
/* Definitions of simple functions for printing timings.
Copyright (C) 2001-2010 Roberto Bagnara <bagnara@cs.unipr.it>
Copyright (C) 2010-2011 BUGSENG srl (http://bugseng.com)
This file is part of the Parma Polyhedra Library (PPL).
The PPL 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.
The PPL 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 02111-1307, USA.
For the most up-to-date information see the Parma Polyhedra Library
site: http://www.cs.unipr.it/ppl/ . */
#include <ppl-config.h>
#include "timings.hh"
#include <cassert>
#include <ctime>
#include <iostream>
#include <iomanip>
#include <cstring>
#include <cerrno>
#include <cstdlib>
#ifdef PPL_HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#ifdef PPL_HAVE_SYS_RESOURCE_H
// This should be included after <time.h> and <sys/time.h> so as to make
// sure we have the definitions for, e.g., `ru_utime'.
# include <sys/resource.h>
#endif
using namespace std;
#ifdef PPL_HAVE_TIMEVAL
// To save the time when start_clock is called.
static struct timeval saved_ru_utime;
#endif
void
start_clock() {
#if defined(PPL_HAVE_DECL_GETRUSAGE) && defined(PPL_HAVE_TIMEVAL)
struct rusage rsg;
if (getrusage(RUSAGE_SELF, &rsg) != 0) {
cerr << "getrusage failed: " << strerror(errno) << endl;
exit(1);
}
else
saved_ru_utime = rsg.ru_utime;
#endif
}
void
print_clock(ostream& s) {
#if defined(PPL_HAVE_DECL_GETRUSAGE) && defined(PPL_HAVE_TIMEVAL)
struct rusage rsg;
if (getrusage(RUSAGE_SELF, &rsg) != 0) {
cerr << "getrusage failed: " << strerror(errno) << endl;
exit(1);
}
else {
time_t current_secs = rsg.ru_utime.tv_sec;
time_t current_usecs = rsg.ru_utime.tv_usec;
time_t saved_secs = saved_ru_utime.tv_sec;
time_t saved_usecs = saved_ru_utime.tv_usec;
time_t secs;
time_t hsecs;
secs = current_secs - saved_secs;
if (current_usecs < saved_usecs) {
hsecs = (((1000000 + current_usecs) - saved_usecs) + 5000) / 10000;
if (hsecs < 100)
--secs;
else
hsecs = 0;
}
else {
hsecs = ((current_usecs - saved_usecs) + 5000) / 10000;
if (hsecs == 100) {
++secs;
hsecs = 0;
}
}
assert(hsecs >= 0 && hsecs < 100 && secs >= 0);
int fill_char = s.fill();
s << secs << "." << setfill('0') << setw(2) << hsecs;
s.fill(fill_char);
}
#else
s << "(no clock available)";
#endif
}
|
