aboutsummaryrefslogtreecommitdiff
path: root/gmon/tst-sprofil.c
blob: 13a8ed3bdbfaf12740c802ac21598ee09ba232be (plain)
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
/* Copyright (C) 2001-2024 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C 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.

   The GNU C 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 the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/profil.h>

#include <bits/wordsize.h>

#define NELEMS(a)	(sizeof (a)/sizeof ((a)[0]))

size_t taddr[] =
  {
    0x00001000,		/* elf32/hppa */
    0x08048000,		/* Linux elf32/x86 */
    0x80000000,		/* Linux elf32/m68k */
    0x00400000,		/* Linux elf32/mips */
    0x01800000,		/* Linux elf32/ppc */
    0x00010000		/* Linux elf32/sparc */
#if __WORDSIZE > 32
    ,
    0x4000000000000000,	/* Linux elf64/ia64 */
    0x0000000120000000,	/* Linux elf64/alpha */
    0x4000000000001000,	/* elf64/hppa */
    0x0000000100000000	/* Linux elf64/sparc */
#endif
  };

unsigned int buf[NELEMS (taddr)][0x10000 / sizeof (int)];
unsigned int bshort[5][0x100 / sizeof (int)];
unsigned int blong[1][0x1000 / sizeof (int)];
unsigned int vlong[1][0x2000 / sizeof (int)];

static long int
fac (long int n)
{
  if (n == 0)
    return 1;
  return n * fac (n - 1);
}

int
main (int argc, char **argv)
{
  unsigned int ovfl = 0, profcnt = 0;
  struct timeval tv, start;
  struct prof prof[32];
  double t_tick, delta;
  long int sum = 0;
  int i, j;

  for (i = 0; i < NELEMS (taddr); ++i)
    {
      prof[profcnt].pr_base = buf[i];
      prof[profcnt].pr_size = sizeof (buf[i]);
      prof[profcnt].pr_off = taddr[i];
      prof[profcnt].pr_scale = 0x10000;
      ++profcnt;
    }

  prof[profcnt].pr_base = blong[0];
  prof[profcnt].pr_size = sizeof (blong[0]);
  prof[profcnt].pr_off = 0x80001000;
  prof[profcnt].pr_scale = 0x10000;
  ++profcnt;

  prof[profcnt].pr_base = bshort[0];
  prof[profcnt].pr_size = sizeof (bshort[0]);
  prof[profcnt].pr_off = 0x80000080;
  prof[profcnt].pr_scale = 0x10000;
  ++profcnt;

  prof[profcnt].pr_base = bshort[1];
  prof[profcnt].pr_size = sizeof (bshort[1]);
  prof[profcnt].pr_off = 0x80000f80;
  prof[profcnt].pr_scale = 0x10000;
  ++profcnt;

  prof[profcnt].pr_base = bshort[2];
  prof[profcnt].pr_size = sizeof (bshort[2]);
  prof[profcnt].pr_off = 0x80001080;
  prof[profcnt].pr_scale = 0x10000;
  ++profcnt;

  prof[profcnt].pr_base = bshort[3];
  prof[profcnt].pr_size = sizeof (bshort[3]);
  prof[profcnt].pr_off = 0x80001f80;
  prof[profcnt].pr_scale = 0x10000;
  ++profcnt;

  prof[profcnt].pr_base = bshort[4];
  prof[profcnt].pr_size = sizeof (bshort[4]);
  prof[profcnt].pr_off = 0x80002080;
  prof[profcnt].pr_scale = 0x10000;
  ++profcnt;

  prof[profcnt].pr_base = vlong[0];
  prof[profcnt].pr_size = sizeof (vlong[0]);
  prof[profcnt].pr_off = 0x80000080;
  prof[profcnt].pr_scale = 0x10000;
  ++profcnt;

  /* Set up overflow counter (must be last on Irix).  */
  prof[profcnt].pr_base = &ovfl;
  prof[profcnt].pr_size = sizeof (ovfl);
  prof[profcnt].pr_off = 0;
  prof[profcnt].pr_scale = 2;
  ++profcnt;

  /* Turn it on.  */
  if (sprofil (prof, profcnt, &tv, PROF_UINT) < 0)
    {
      if (errno == ENOSYS)
	exit (0);
      perror ("sprofil");
      exit (1);
    }

  t_tick = tv.tv_sec + 1e-6 * tv.tv_usec;
  printf ("profiling period = %g ms\n", 1e3 * t_tick);

  gettimeofday (&start, NULL);
  do
    {
      for (i = 0; i < 21; ++i)
	sum += fac (i);

      gettimeofday (&tv, NULL);
      timersub (&tv, &start, &tv);
      delta = tv.tv_sec + 1e-6 * tv.tv_usec;
    }
  while (delta < 1000 * t_tick);

  printf ("sum = 0x%lx\n", sum);

  /* Turn it off.  */
  if (sprofil (NULL, 0, NULL, 0) < 0)
    {
      if (errno == ENOSYS)
	exit (0);
      perror ("sprofil");
      exit (1);
    }

  printf ("overflow = %u\n", ovfl);
  for (i = 0; i < NELEMS (taddr); ++i)
    for (j = 0; j < 0x10000 / sizeof (int); ++j)
      if (buf[i][j] != 0)
	printf ("%0*zx\t%u\t(buffer %d)\n",
		(int) (sizeof (size_t) * 2),
		(taddr[i] + ((char *) &buf[i][j] - (char *) &buf[i][0])),
		buf[i][j], i);

  return 0;
}