1 /* Measure strspn functions.
2 Copyright (C) 2013-2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #define TEST_MAIN
20 #ifndef WIDE
21 # define TEST_NAME "strspn"
22 #else
23 # define TEST_NAME "wcsspn"
24 #endif /* WIDE */
25 #include "bench-string.h"
26
27 #define BIG_CHAR MAX_CHAR
28
29 #ifndef WIDE
30 # define SIMPLE_STRSPN simple_strspn
31 # define SMALL_CHAR 127
32 #else
33 # define SIMPLE_STRSPN simple_wcsspn
34 # define SMALL_CHAR 1273
35 #endif /* WIDE */
36
37 typedef size_t (*proto_t) (const CHAR *, const CHAR *);
38 size_t SIMPLE_STRSPN (const CHAR *, const CHAR *);
39
40 IMPL (SIMPLE_STRSPN, 0)
41 IMPL (STRSPN, 1)
42
43 size_t
SIMPLE_STRSPN(const CHAR * s,const CHAR * acc)44 SIMPLE_STRSPN (const CHAR *s, const CHAR *acc)
45 {
46 const CHAR *r, *str = s;
47 CHAR c;
48
49 while ((c = *s++) != '\0')
50 {
51 for (r = acc; *r != '\0'; ++r)
52 if (*r == c)
53 break;
54 if (*r == '\0')
55 return s - str - 1;
56 }
57 return s - str - 1;
58 }
59
60 static void
do_one_test(impl_t * impl,const CHAR * s,const CHAR * acc,size_t exp_res)61 do_one_test (impl_t *impl, const CHAR *s, const CHAR *acc, size_t exp_res)
62 {
63 size_t res = CALL (impl, s, acc), i, iters = INNER_LOOP_ITERS_MEDIUM;
64 timing_t start, stop, cur;
65
66 if (res != exp_res)
67 {
68 error (0, 0, "Wrong result in function %s %p %p", impl->name,
69 (void *) res, (void *) exp_res);
70 ret = 1;
71 return;
72 }
73
74 TIMING_NOW (start);
75 for (i = 0; i < iters; ++i)
76 {
77 CALL (impl, s, acc);
78 }
79 TIMING_NOW (stop);
80
81 TIMING_DIFF (cur, start, stop);
82
83 TIMING_PRINT_MEAN ((double) cur, (double) iters);
84 }
85
86 static void
do_test(size_t align,size_t pos,size_t len)87 do_test (size_t align, size_t pos, size_t len)
88 {
89 size_t i;
90 CHAR *acc, *s;
91
92 align &= 7;
93 if ((align + pos + 10) * sizeof (CHAR) >= page_size || len > 240 || ! len)
94 return;
95
96 acc = (CHAR *) (buf2) + (random () & 255);
97 s = (CHAR *) (buf1) + align;
98
99 for (i = 0; i < len; ++i)
100 {
101 acc[i] = random () & BIG_CHAR;
102 if (!acc[i])
103 acc[i] = random () & BIG_CHAR;
104 if (!acc[i])
105 acc[i] = 1 + (random () & SMALL_CHAR);
106 }
107 acc[len] = '\0';
108
109 for (i = 0; i < pos; ++i)
110 s[i] = acc[random () % len];
111 s[pos] = random () & BIG_CHAR;
112 if (STRCHR (acc, s[pos]))
113 s[pos] = '\0';
114 else
115 {
116 for (i = pos + 1; i < pos + 10; ++i)
117 s[i] = random () & BIG_CHAR;
118 s[i] = '\0';
119 }
120
121 printf ("Length %4zd, alignment %2zd, acc len %2zd:", pos, align, len);
122
123 FOR_EACH_IMPL (impl, 0)
124 do_one_test (impl, s, acc, pos);
125
126 putchar ('\n');
127 }
128
129 int
test_main(void)130 test_main (void)
131 {
132 size_t i;
133
134 test_init ();
135
136 printf ("%32s", "");
137 FOR_EACH_IMPL (impl, 0)
138 printf ("\t%s", impl->name);
139 putchar ('\n');
140
141 for (i = 0; i < 32; ++i)
142 {
143 do_test (0, 512, i);
144 do_test (i, 512, i);
145 }
146
147 for (i = 1; i < 8; ++i)
148 {
149 do_test (0, 16 << i, 4);
150 do_test (i, 16 << i, 4);
151 }
152
153 for (i = 1; i < 8; ++i)
154 do_test (i, 64, 10);
155
156 for (i = 0; i < 64; ++i)
157 do_test (0, i, 6);
158
159 return ret;
160 }
161
162 #include <support/test-driver.c>
163