1 /* Measure strcasestr functions.
2 Copyright (C) 2013-2023 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 #define TEST_NAME "strcasestr"
21 #include "bench-string.h"
22
23
24 #define STRCASESTR simple_strcasestr
25 #define NO_ALIAS
26 #define __strncasecmp strncasecmp
27 #define __strnlen strnlen
28 #include "../string/strcasestr.c"
29
30 typedef char *(*proto_t) (const char *, const char *);
31
32 IMPL (simple_strcasestr, 0)
33 IMPL (strcasestr, 1)
34
35
36 static void
37 do_one_test (impl_t *impl, const char *s1, const char *s2, char *exp_result)
38 {
39 size_t i, iters = INNER_LOOP_ITERS_SMALL;
40 timing_t start, stop, cur;
41
42 TIMING_NOW (start);
43 for (i = 0; i < iters; ++i)
44 {
45 CALL (impl, s1, s2);
46 }
47 TIMING_NOW (stop);
48
49 TIMING_DIFF (cur, start, stop);
50
51 TIMING_PRINT_MEAN ((double) cur, (double) iters);
52 }
53
54
55 static void
56 do_test (size_t align1, size_t align2, size_t len1, size_t len2,
57 int fail)
58 {
59 char *s1 = (char *) (buf1 + align1);
60 char *s2 = (char *) (buf2 + align2);
61
62 static const char d[] = "1234567890abcxyz";
63 #define dl (sizeof (d) - 1)
64 char *ss2 = s2;
65 for (size_t l = len2; l > 0; l = l > dl ? l - dl : 0)
66 {
67 size_t t = l > dl ? dl : l;
68 ss2 = mempcpy (ss2, d, t);
69 }
70 s2[len2] = '\0';
71
72 if (fail)
73 {
74 char *ss1 = s1;
75 for (size_t l = len1; l > 0; l = l > dl ? l - dl : 0)
76 {
77 size_t t = l > dl ? dl : l;
78 memcpy (ss1, d, t);
79 ++ss1[len2 > 7 ? 7 : len2 - 1];
80 ss1 += t;
81 }
82 }
83 else
84 {
85 memset (s1, '0', len1);
86 for (size_t i = 0; i < len2; ++i)
87 s1[len1 - len2 + i] = toupper (s2[i]);
88 }
89 s1[len1] = '\0';
90
91 printf ("Length %4zd/%zd, alignment %2zd/%2zd, %s:",
92 len1, len2, align1, align2, fail ? "fail" : "found");
93
94 FOR_EACH_IMPL (impl, 0)
95 do_one_test (impl, s1, s2, fail ? NULL : s1 + len1 - len2);
96
97 putchar ('\n');
98 }
99
100 static int
101 test_main (void)
102 {
103 test_init ();
104
105 printf ("%23s", "");
106 FOR_EACH_IMPL (impl, 0)
107 printf ("\t%s", impl->name);
108 putchar ('\n');
109
110 for (size_t klen = 2; klen < 32; ++klen)
111 for (size_t hlen = 2 * klen; hlen < 16 * klen; hlen += klen)
112 {
113 do_test (0, 0, hlen, klen, 0);
114 do_test (0, 0, hlen, klen, 1);
115 do_test (0, 3, hlen, klen, 0);
116 do_test (0, 3, hlen, klen, 1);
117 do_test (0, 9, hlen, klen, 0);
118 do_test (0, 9, hlen, klen, 1);
119 do_test (0, 15, hlen, klen, 0);
120 do_test (0, 15, hlen, klen, 1);
121
122 do_test (3, 0, hlen, klen, 0);
123 do_test (3, 0, hlen, klen, 1);
124 do_test (3, 3, hlen, klen, 0);
125 do_test (3, 3, hlen, klen, 1);
126 do_test (3, 9, hlen, klen, 0);
127 do_test (3, 9, hlen, klen, 1);
128 do_test (3, 15, hlen, klen, 0);
129 do_test (3, 15, hlen, klen, 1);
130
131 do_test (9, 0, hlen, klen, 0);
132 do_test (9, 0, hlen, klen, 1);
133 do_test (9, 3, hlen, klen, 0);
134 do_test (9, 3, hlen, klen, 1);
135 do_test (9, 9, hlen, klen, 0);
136 do_test (9, 9, hlen, klen, 1);
137 do_test (9, 15, hlen, klen, 0);
138 do_test (9, 15, hlen, klen, 1);
139
140 do_test (15, 0, hlen, klen, 0);
141 do_test (15, 0, hlen, klen, 1);
142 do_test (15, 3, hlen, klen, 0);
143 do_test (15, 3, hlen, klen, 1);
144 do_test (15, 9, hlen, klen, 0);
145 do_test (15, 9, hlen, klen, 1);
146 do_test (15, 15, hlen, klen, 0);
147 do_test (15, 15, hlen, klen, 1);
148 }
149
150 do_test (0, 0, page_size - 1, 16, 0);
151 do_test (0, 0, page_size - 1, 16, 1);
152
153 return ret;
154 }
155
156 #include <support/test-driver.c>