1 | /* Measure strspn 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 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 |
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 |
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 (status: 0, errnum: 0, format: "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 |
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 (format: "Length %4zd, alignment %2zd, acc len %2zd:" , pos, align, len); |
122 | |
123 | FOR_EACH_IMPL (impl, 0) |
124 | do_one_test (impl, s, acc, exp_res: pos); |
125 | |
126 | putchar (c: '\n'); |
127 | } |
128 | |
129 | int |
130 | test_main (void) |
131 | { |
132 | size_t i; |
133 | |
134 | test_init (); |
135 | |
136 | printf (format: "%32s" , "" ); |
137 | FOR_EACH_IMPL (impl, 0) |
138 | printf (format: "\t%s" , impl->name); |
139 | putchar (c: '\n'); |
140 | |
141 | for (i = 0; i < 32; ++i) |
142 | { |
143 | do_test (align: 0, pos: 512, len: i); |
144 | do_test (align: i, pos: 512, len: i); |
145 | } |
146 | |
147 | for (i = 1; i < 8; ++i) |
148 | { |
149 | do_test (align: 0, pos: 16 << i, len: 4); |
150 | do_test (align: i, pos: 16 << i, len: 4); |
151 | } |
152 | |
153 | for (i = 1; i < 8; ++i) |
154 | do_test (align: i, pos: 64, len: 10); |
155 | |
156 | for (i = 0; i < 64; ++i) |
157 | do_test (align: 0, pos: i, len: 6); |
158 | |
159 | return ret; |
160 | } |
161 | |
162 | #include <support/test-driver.c> |
163 | |