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
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
|
/******************************************************************************
* SOFA, Simulation Open-Framework Architecture, version 1.0 beta 4 *
* (c) 2006-2009 MGH, INRIA, USTL, UJF, CNRS *
* *
* This library is free software; you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as published by *
* the Free Software Foundation; either version 2.1 of the License, or (at *
* your option) any later version. *
* *
* This library 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 Lesser General Public License *
* for more details. *
* *
* You should have received a copy of the GNU Lesser General Public License *
* along with this library; if not, write to the Free Software Foundation, *
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
*******************************************************************************
* SOFA :: Framework *
* *
* Authors: M. Adam, J. Allard, B. Andre, P-J. Bensoussan, S. Cotin, C. Duriez,*
* H. Delingette, F. Falipou, F. Faure, S. Fonteneau, L. Heigeas, C. Mendoza, *
* M. Nesme, P. Neumann, J-P. de la Plata Alcade, F. Poyer and F. Roy *
* *
* Contact information: contact@sofa-framework.org *
******************************************************************************/
#include <sofa/helper/system/thread/CTime.h>
#ifdef WIN32
# include <windows.h>
# if _MSC_VER >= 1400
# include <intrin.h>
# endif
#else
# include <unistd.h>
# include <sys/time.h>
#endif
#if defined(__ia64__) && (defined(__EDG_VERSION) || defined(__ECC))
#include <ia64intrin.h>
#endif
#include <iostream>
/********************
* Time measurement *
********************/
namespace sofa
{
namespace helper
{
namespace system
{
namespace thread
{
#ifdef WIN32
ctime_t CTime::getRefTime()
{
LARGE_INTEGER a;
QueryPerformanceCounter(&a);
return(a.QuadPart);
}
ctime_t CTime::getRefTicksPerSec()
{
LARGE_INTEGER b;
QueryPerformanceFrequency(&b);
return(b.QuadPart);
}
void CTime::sleep(double a)
{
_sleep((long)(a*1000.0));
}
#else /* WIN32 */
ctime_t CTime::getRefTime()
{
struct timeval tv;
gettimeofday(&tv,0);
return ((ctime_t)tv.tv_sec)*1000000 + ((ctime_t)tv.tv_usec);
}
ctime_t CTime::getRefTicksPerSec()
{
return (ctime_t)1000000;
}
void CTime::sleep(double a)
{
usleep((unsigned int)(a*1000000.0));
}
#endif /* WIN32 */
#ifdef SOFA_RDTSC
#if defined(_MSC_VER)
ctime_t CTime::getFastTime()
{
#if _MSC_VER >= 1400
return __rdtsc();
#else
_asm _emit 0x0F
_asm _emit 0x31
#endif
}
#elif defined(__ia64__)
# if defined(__EDG_VERSION) || defined(__ECC)
ctime_t CTime::getFastTime()
{
return __getReg(_IA64_REG_AR_ITC);
}
# else
ctime_t CTime::getFastTime()
{
ctime_t t;
__asm__ __volatile__("mov %0=ar.itc" : "=r"(t) :: "memory");
return t;
}
# endif
#elif defined(__powerpc__) || defined(__POWERPC__)
ctime_t CTime::getFastTime()
{
register unsigned long t_u;
register unsigned long t_l;
asm volatile ("mftbu %0" : "=r" (t_u) );
asm volatile ("mftb %0" : "=r" (t_l) );
return (((ctime_t)t_u)<<32UL) | t_l;
}
#elif defined(__GNUC__)
ctime_t CTime::getFastTime()
{
ctime_t t;
__asm__ volatile ("rdtsc" : "=A" (t) );
return t;
}
#else
#error RDTSC not supported on this platform
#endif
ctime_t CTime::computeTicksPerSec()
{
ctime_t tick1,tick2,tick3,tick4, time1,time2;
ctime_t reffreq = getRefTicksPerSec();
tick1 = getFastTime();
time1 = getRefTime();
tick2 = getFastTime();
sleep(0.1);
tick3 = getFastTime();
time2 = getRefTime();
tick4 = getFastTime();
double cpu_frequency_min =(tick3-tick2) * ((double)reffreq) / (time2 - time1);
double cpu_frequency_max =(tick4-tick1) * ((double)reffreq) / (time2 - time1);
std::cout << " CPU Frequency in [" << ((int)(cpu_frequency_min/1000000))*0.001 << " .. " << ((ctime_t)(cpu_frequency_max/1000000))*0.001 << "] GHz" << std::endl;
return (ctime_t)((cpu_frequency_min + cpu_frequency_max)/2);
}
ctime_t CTime::getTicksPerSec()
{
static const ctime_t freq = computeTicksPerSec();
return freq;
}
#else /* SOFA_RDTSC */
ctime_t CTime::getFastTime()
{
return getRefTime();
}
ctime_t CTime::getTicksPerSec()
{
return getRefTicksPerSec();
}
#endif /* SOFA_RDTSC */
ctime_t CTime::getTime()
{
static ctime_t last = 0;
ctime_t t = getFastTime();
if (t <= last)
t = last;
else
last = t;
return t;
}
} // namespace thread
} // namespace system
} // namespace helper
} // namespace sofa
|
