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
|
/* Test and measure string and memory functions.
Copyright (C) 1999, 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Jakub Jelinek <jakub@redhat.com>, 1999.
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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
typedef struct
{
const char *name;
void (*fn) (void);
long test;
} impl_t;
extern impl_t __start_impls[], __stop_impls[];
#define IMPL(name, test) \
impl_t tst_ ## name \
__attribute__ ((section ("impls"), aligned (sizeof (void *)))) \
= { #name, (void (*) (void))name, test };
#ifdef TEST_MAIN
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#undef __USE_STRING_INLINES
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <unistd.h>
#include <fcntl.h>
#include <error.h>
#include <errno.h>
#include <time.h>
#define GL(x) _##x
#include <hp-timing.h>
# define TEST_FUNCTION test_main ()
# define TIMEOUT (4 * 60)
# define OPT_ITERATIONS 10000
# define OPT_RANDOM 10001
# define OPT_SEED 10002
unsigned char *buf1, *buf2;
int ret, do_srandom;
unsigned int seed;
size_t page_size;
hp_timing_t _dl_hp_timing_overhead;
# ifndef ITERATIONS
size_t iterations = 100000;
# define ITERATIONS_OPTIONS \
{ "iterations", required_argument, NULL, OPT_ITERATIONS },
# define ITERATIONS_PROCESS \
case OPT_ITERATIONS: \
iterations = strtoul (optarg, NULL, 0); \
break;
# define ITERATIONS iterations
# else
# define ITERATIONS_OPTIONS
# define ITERATIONS_PROCESS
# endif
# define CMDLINE_OPTIONS ITERATIONS_OPTIONS \
{ "random", no_argument, NULL, OPT_RANDOM }, \
{ "seed", required_argument, NULL, OPT_SEED },
# define CMDLINE_PROCESS ITERATIONS_PROCESS \
case OPT_RANDOM: \
{ \
int fdr = open ("/dev/urandom", O_RDONLY); \
\
if (fdr < 0 || read (fdr, &seed, sizeof(seed)) != sizeof (seed)) \
seed = time (NULL); \
if (fdr >= 0) \
close (fdr); \
do_srandom = 1; \
break; \
} \
\
case OPT_SEED: \
seed = strtoul (optarg, NULL, 0); \
do_srandom = 1; \
break;
#define CALL(impl, ...) \
(* (proto_t) (impl)->fn) (__VA_ARGS__)
#define FOR_EACH_IMPL(impl, notall) \
for (impl_t *impl = __start_impls; impl < __stop_impls; ++impl) \
if (!notall || impl->test)
#define HP_TIMING_BEST(best_time, start, end) \
do \
{ \
hp_timing_t tmptime; \
HP_TIMING_DIFF (tmptime, start + _dl_hp_timing_overhead, end); \
if (best_time > tmptime) \
best_time = tmptime; \
} \
while (0)
static void
test_init (void)
{
page_size = 2 * getpagesize ();
#ifdef MIN_PAGE_SIZE
if (page_size < MIN_PAGE_SIZE)
page_size = MIN_PAGE_SIZE;
#endif
buf1 = mmap (0, 2 * page_size, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANON, -1, 0);
if (buf1 == MAP_FAILED)
error (EXIT_FAILURE, errno, "mmap failed");
if (mprotect (buf1 + page_size, page_size, PROT_NONE))
error (EXIT_FAILURE, errno, "mprotect failed");
buf2 = mmap (0, 2 * page_size, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANON, -1, 0);
if (buf2 == MAP_FAILED)
error (EXIT_FAILURE, errno, "mmap failed");
if (mprotect (buf2 + page_size, page_size, PROT_NONE))
error (EXIT_FAILURE, errno, "mprotect failed");
HP_TIMING_DIFF_INIT ();
if (do_srandom)
{
printf ("Setting seed to 0x%x\n", seed);
srandom (seed);
}
}
#endif
|
