1 | /* Measure strpbrk functions. |
2 | Copyright (C) 2013-2022 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 BIG_CHAR MAX_CHAR |
20 | |
21 | #ifndef WIDE |
22 | # define SMALL_CHAR 127 |
23 | #else |
24 | # define SMALL_CHAR 1273 |
25 | #endif /* WIDE */ |
26 | |
27 | #ifndef STRPBRK_RESULT |
28 | # define STRPBRK_RESULT(s, pos) ((s)[(pos)] ? (s) + (pos) : NULL) |
29 | # define RES_TYPE CHAR * |
30 | # define TEST_MAIN |
31 | # ifndef WIDE |
32 | # define TEST_NAME "strpbrk" |
33 | # else |
34 | # define TEST_NAME "wcspbrk" |
35 | # endif /* WIDE */ |
36 | # include "bench-string.h" |
37 | |
38 | # ifndef WIDE |
39 | # define SIMPLE_STRPBRK simple_strpbrk |
40 | # else |
41 | # define SIMPLE_STRPBRK simple_wcspbrk |
42 | # endif /* WIDE */ |
43 | |
44 | typedef CHAR *(*proto_t) (const CHAR *, const CHAR *); |
45 | CHAR *SIMPLE_STRPBRK (const CHAR *, const CHAR *); |
46 | |
47 | IMPL (SIMPLE_STRPBRK, 0) |
48 | IMPL (STRPBRK, 1) |
49 | |
50 | CHAR * |
51 | SIMPLE_STRPBRK (const CHAR *s, const CHAR *rej) |
52 | { |
53 | const CHAR *r; |
54 | CHAR c; |
55 | |
56 | while ((c = *s++) != '\0') |
57 | for (r = rej; *r != '\0'; ++r) |
58 | if (*r == c) |
59 | return (CHAR *) s - 1; |
60 | return NULL; |
61 | } |
62 | |
63 | #endif /* !STRPBRK_RESULT */ |
64 | |
65 | static void |
66 | do_one_test (impl_t *impl, const CHAR *s, const CHAR *rej, RES_TYPE exp_res) |
67 | { |
68 | RES_TYPE res = CALL (impl, s, rej); |
69 | size_t i, iters = INNER_LOOP_ITERS_MEDIUM; |
70 | timing_t start, stop, cur; |
71 | |
72 | if (res != exp_res) |
73 | { |
74 | error (status: 0, errnum: 0, format: "Wrong result in function %s %p %p" , impl->name, |
75 | (void *) res, (void *) exp_res); |
76 | ret = 1; |
77 | return; |
78 | } |
79 | |
80 | TIMING_NOW (start); |
81 | for (i = 0; i < iters; ++i) |
82 | { |
83 | CALL (impl, s, rej); |
84 | } |
85 | TIMING_NOW (stop); |
86 | |
87 | TIMING_DIFF (cur, start, stop); |
88 | |
89 | TIMING_PRINT_MEAN ((double) cur, (double) iters); |
90 | } |
91 | |
92 | static void |
93 | do_test (size_t align, size_t pos, size_t len) |
94 | { |
95 | size_t i; |
96 | int c; |
97 | RES_TYPE result; |
98 | CHAR *rej, *s; |
99 | |
100 | align &= 7; |
101 | if ((align + pos + 10) * sizeof (CHAR) >= page_size || len > 240) |
102 | return; |
103 | |
104 | rej = (CHAR *) (buf2) + (random () & 255); |
105 | s = (CHAR *) (buf1) + align; |
106 | |
107 | for (i = 0; i < len; ++i) |
108 | { |
109 | rej[i] = random () & BIG_CHAR; |
110 | if (!rej[i]) |
111 | rej[i] = random () & BIG_CHAR; |
112 | if (!rej[i]) |
113 | rej[i] = 1 + (random () & SMALL_CHAR); |
114 | } |
115 | rej[len] = '\0'; |
116 | for (c = 1; c <= BIG_CHAR; ++c) |
117 | if (STRCHR (rej, c) == NULL) |
118 | break; |
119 | |
120 | for (i = 0; i < pos; ++i) |
121 | { |
122 | s[i] = random () & BIG_CHAR; |
123 | if (STRCHR (rej, s[i])) |
124 | { |
125 | s[i] = random () & BIG_CHAR; |
126 | if (STRCHR (rej, s[i])) |
127 | s[i] = c; |
128 | } |
129 | } |
130 | s[pos] = rej[random () % (len + 1)]; |
131 | if (s[pos]) |
132 | { |
133 | for (i = pos + 1; i < pos + 10; ++i) |
134 | s[i] = random () & BIG_CHAR; |
135 | s[i] = '\0'; |
136 | } |
137 | result = STRPBRK_RESULT (s, pos); |
138 | |
139 | printf (format: "Length %4zd, alignment %2zd, rej len %2zd:" , pos, align, len); |
140 | |
141 | FOR_EACH_IMPL (impl, 0) |
142 | do_one_test (impl, s, rej, exp_res: result); |
143 | |
144 | putchar (c: '\n'); |
145 | } |
146 | |
147 | int |
148 | test_main (void) |
149 | { |
150 | size_t i; |
151 | |
152 | test_init (); |
153 | |
154 | printf (format: "%32s" , "" ); |
155 | FOR_EACH_IMPL (impl, 0) |
156 | printf (format: "\t%s" , impl->name); |
157 | putchar (c: '\n'); |
158 | |
159 | for (i = 0; i < 32; ++i) |
160 | { |
161 | do_test (align: 0, pos: 512, len: i); |
162 | do_test (align: i, pos: 512, len: i); |
163 | } |
164 | |
165 | for (i = 1; i < 8; ++i) |
166 | { |
167 | do_test (align: 0, pos: 16 << i, len: 4); |
168 | do_test (align: i, pos: 16 << i, len: 4); |
169 | } |
170 | |
171 | for (i = 1; i < 8; ++i) |
172 | do_test (align: i, pos: 64, len: 10); |
173 | |
174 | for (i = 0; i < 64; ++i) |
175 | do_test (align: 0, pos: i, len: 6); |
176 | |
177 | return ret; |
178 | } |
179 | |
180 | #include <support/test-driver.c> |
181 | |