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
|
/* Copyright (C) 1995, 1996 Free Software Foundation, Inc.
This file is part of GNU Fortran libU77 library.
This library is free software; you can redistribute it and/or modify it
under the terms of the GNU Library General Public License as published
by the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
GNU Fortran 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with GNU Fortran; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#if HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <sys/types.h>
#if HAVE_SYS_TIMES_H
# include <sys/times.h>
#endif
#if HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
#if HAVE_GETRUSAGE
# include <sys/time.h>
# include <sys/resource.h>
#endif
#if defined (_WIN32)
# include <windows.h>
# undef min
# undef max
#endif
#include <errno.h> /* for ENOSYS */
#include "f2c.h"
/* For dtime, etime we store the clock tick parameter (clk_tck) the
first time either of them is invoked rather than each time. This
approach probably speeds up each invocation by avoiding a system
call each time, but means that the overhead of the first call is
different to all others. */
static long clk_tck = 0;
#ifdef KR_headers
double G77_dtime_0 (tarray)
real tarray[2];
#else
double G77_dtime_0 (real tarray[2])
#endif
{
#if defined (_WIN32)
static int win32_platform = -1;
if (win32_platform == -1)
{
OSVERSIONINFO osv;
osv.dwOSVersionInfoSize = sizeof (osv);
GetVersionEx (&osv);
win32_platform = osv.dwPlatformId;
}
/* We need to use this hack on non-NT platforms, where the first call
returns 0.0 and subsequent ones return the correct value. */
if (win32_platform != VER_PLATFORM_WIN32_NT)
{
static unsigned long long clock_freq;
static unsigned long long old_count;
unsigned long long count;
double delta;
LARGE_INTEGER counter_val;
if (clock_freq == 0)
{
LARGE_INTEGER freq;
if (! QueryPerformanceFrequency (&freq))
{
errno = ENOSYS;
return 0.0;
}
else
{
clock_freq = ((unsigned long long) freq.HighPart << 32)
+ ((unsigned) freq.LowPart);
}
}
if (! QueryPerformanceCounter (&counter_val))
return -1.0;
count = ((unsigned long long) counter_val.HighPart << 32)
+ (unsigned) counter_val.LowPart;
delta = ((double) (count - old_count)) / clock_freq;
tarray[0] = (float) delta;
tarray[1] = 0.0;
old_count = count;
}
else
{
static unsigned long long old_utime, old_stime;
unsigned long long utime, stime;
FILETIME creation_time, exit_time, kernel_time, user_time;
GetProcessTimes (GetCurrentProcess (), &creation_time, &exit_time,
&kernel_time, &user_time);
utime = ((unsigned long long) user_time.dwHighDateTime << 32)
+ (unsigned) user_time.dwLowDateTime;
stime = ((unsigned long long) kernel_time.dwHighDateTime << 32)
+ (unsigned) kernel_time.dwLowDateTime;
tarray[0] = (utime - old_utime) / 1.0e7;
tarray[1] = (stime - old_stime) / 1.0e7;
old_utime = utime;
old_stime = stime;
}
return tarray[0] + tarray[1];
#elif defined (HAVE_GETRUSAGE) || defined (HAVE_TIMES)
/* The getrusage version is only the default for convenience. */
#ifdef HAVE_GETRUSAGE
float utime, stime;
static float old_utime = 0.0, old_stime = 0.0;
struct rusage rbuff;
if (getrusage (RUSAGE_SELF, &rbuff) != 0)
abort ();
utime = (float) (rbuff.ru_utime).tv_sec +
(float) (rbuff.ru_utime).tv_usec/1000000.0;
tarray[0] = utime - (float) old_utime;
stime = (float) (rbuff.ru_stime).tv_sec +
(float) (rbuff.ru_stime).tv_usec/1000000.0;
tarray[1] = stime - old_stime;
#else /* HAVE_GETRUSAGE */
time_t utime, stime;
static time_t old_utime = 0, old_stime = 0;
struct tms buffer;
/* NeXTStep seems to define _SC_CLK_TCK but not to have sysconf;
fixme: does using _POSIX_VERSION help? */
# if defined _SC_CLK_TCK && defined _POSIX_VERSION
if (! clk_tck) clk_tck = sysconf(_SC_CLK_TCK);
# elif defined CLOCKS_PER_SECOND
if (! clk_tck) clk_tck = CLOCKS_PER_SECOND;
# elif defined CLK_TCK
if (! clk_tck) clk_tck = CLK_TCK;
# elif defined HZ
if (! clk_tck) clk_tck = HZ;
# elif defined HAVE_GETRUSAGE
# else
#error Dont know clock tick length
# endif
if (times(&buffer) == (clock_t)-1) return -1.0;
utime = buffer.tms_utime; stime = buffer.tms_stime;
tarray[0] = ((float)(utime - old_utime)) / (float)clk_tck;
tarray[1] = ((float)(stime - old_stime)) / (float)clk_tck;
#endif /* HAVE_GETRUSAGE */
old_utime = utime; old_stime = stime;
return (tarray[0]+tarray[1]);
#else /* ! HAVE_GETRUSAGE && ! HAVE_TIMES */
errno = ENOSYS;
return 0.0;
#endif /* ! HAVE_GETRUSAGE && ! HAVE_TIMES */
}
|
