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97020474 | 1 | /* Measure STRCHR functions. |
f7a9f785 | 2 | Copyright (C) 2013-2016 Free Software Foundation, Inc. |
97020474 SP |
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 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #define TEST_MAIN | |
20 | #ifndef WIDE | |
21 | # ifdef USE_FOR_STRCHRNUL | |
22 | # define TEST_NAME "strchrnul" | |
23 | # else | |
24 | # define TEST_NAME "strchr" | |
d23d4ef1 | 25 | # endif /* !USE_FOR_STRCHRNUL */ |
97020474 | 26 | #else |
d23d4ef1 SL |
27 | # ifdef USE_FOR_STRCHRNUL |
28 | # define TEST_NAME "wcschrnul" | |
29 | # else | |
30 | # define TEST_NAME "wcschr" | |
31 | # endif /* !USE_FOR_STRCHRNUL */ | |
32 | #endif /* WIDE */ | |
97020474 SP |
33 | #include "bench-string.h" |
34 | ||
35 | #ifndef WIDE | |
36 | # ifdef USE_FOR_STRCHRNUL | |
37 | # define STRCHR strchrnul | |
38 | # define stupid_STRCHR stupid_STRCHRNUL | |
39 | # define simple_STRCHR simple_STRCHRNUL | |
40 | # else | |
41 | # define STRCHR strchr | |
d23d4ef1 | 42 | # endif /* !USE_FOR_STRCHRNUL */ |
97020474 SP |
43 | # define STRLEN strlen |
44 | # define CHAR char | |
45 | # define BIG_CHAR CHAR_MAX | |
46 | # define MIDDLE_CHAR 127 | |
47 | # define SMALL_CHAR 23 | |
48 | # define UCHAR unsigned char | |
49 | #else | |
50 | # include <wchar.h> | |
d23d4ef1 SL |
51 | # ifdef USE_FOR_STRCHRNUL |
52 | # define STRCHR wcschrnul | |
53 | # define stupid_STRCHR stupid_WCSCHRNUL | |
54 | # define simple_STRCHR simple_WCSCHRNUL | |
55 | # else | |
56 | # define STRCHR wcschr | |
57 | # endif /* !USE_FOR_STRCHRNUL */ | |
97020474 SP |
58 | # define STRLEN wcslen |
59 | # define CHAR wchar_t | |
60 | # define BIG_CHAR WCHAR_MAX | |
61 | # define MIDDLE_CHAR 1121 | |
62 | # define SMALL_CHAR 851 | |
63 | # define UCHAR wchar_t | |
d23d4ef1 | 64 | #endif /* WIDE */ |
97020474 SP |
65 | |
66 | #ifdef USE_FOR_STRCHRNUL | |
67 | # define NULLRET(endptr) endptr | |
68 | #else | |
69 | # define NULLRET(endptr) NULL | |
d23d4ef1 | 70 | #endif /* !USE_FOR_STRCHRNUL */ |
97020474 SP |
71 | |
72 | ||
73 | typedef CHAR *(*proto_t) (const CHAR *, int); | |
74 | ||
75 | CHAR * | |
76 | simple_STRCHR (const CHAR *s, int c) | |
77 | { | |
78 | for (; *s != (CHAR) c; ++s) | |
79 | if (*s == '\0') | |
80 | return NULLRET ((CHAR *) s); | |
81 | return (CHAR *) s; | |
82 | } | |
83 | ||
84 | CHAR * | |
85 | stupid_STRCHR (const CHAR *s, int c) | |
86 | { | |
87 | size_t n = STRLEN (s) + 1; | |
88 | ||
89 | while (n--) | |
90 | if (*s++ == (CHAR) c) | |
91 | return (CHAR *) s - 1; | |
92 | return NULLRET ((CHAR *) s - 1); | |
93 | } | |
94 | ||
95 | IMPL (stupid_STRCHR, 0) | |
96 | IMPL (simple_STRCHR, 0) | |
97 | IMPL (STRCHR, 1) | |
98 | ||
99 | static void | |
100 | do_one_test (impl_t *impl, const CHAR *s, int c, const CHAR *exp_res) | |
101 | { | |
44558701 WN |
102 | size_t i, iters = INNER_LOOP_ITERS; |
103 | timing_t start, stop, cur; | |
104 | ||
105 | TIMING_NOW (start); | |
106 | for (i = 0; i < iters; ++i) | |
97020474 | 107 | { |
44558701 | 108 | CALL (impl, s, c); |
97020474 | 109 | } |
44558701 WN |
110 | TIMING_NOW (stop); |
111 | ||
112 | TIMING_DIFF (cur, start, stop); | |
113 | ||
114 | TIMING_PRINT_MEAN ((double) cur, (double) iters); | |
97020474 SP |
115 | } |
116 | ||
117 | static void | |
118 | do_test (size_t align, size_t pos, size_t len, int seek_char, int max_char) | |
119 | /* For wcschr: align here means align not in bytes, | |
120 | but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t)) | |
121 | len for wcschr here isn't in bytes but it's number of wchar_t symbols. */ | |
122 | { | |
123 | size_t i; | |
124 | CHAR *result; | |
125 | CHAR *buf = (CHAR *) buf1; | |
126 | align &= 15; | |
127 | if ((align + len) * sizeof (CHAR) >= page_size) | |
128 | return; | |
129 | ||
130 | for (i = 0; i < len; ++i) | |
131 | { | |
132 | buf[align + i] = 32 + 23 * i % max_char; | |
133 | if (buf[align + i] == seek_char) | |
134 | buf[align + i] = seek_char + 1; | |
135 | else if (buf[align + i] == 0) | |
136 | buf[align + i] = 1; | |
137 | } | |
138 | buf[align + len] = 0; | |
139 | ||
140 | if (pos < len) | |
141 | { | |
142 | buf[align + pos] = seek_char; | |
143 | result = buf + align + pos; | |
144 | } | |
145 | else if (seek_char == 0) | |
146 | result = buf + align + len; | |
147 | else | |
148 | result = NULLRET (buf + align + len); | |
149 | ||
44558701 WN |
150 | printf ("Length %4zd, alignment in bytes %2zd:", |
151 | pos, align * sizeof (CHAR)); | |
97020474 SP |
152 | |
153 | FOR_EACH_IMPL (impl, 0) | |
154 | do_one_test (impl, buf + align, seek_char, result); | |
155 | ||
44558701 | 156 | putchar ('\n'); |
97020474 SP |
157 | } |
158 | ||
159 | int | |
160 | test_main (void) | |
161 | { | |
162 | size_t i; | |
163 | ||
164 | test_init (); | |
165 | ||
166 | printf ("%20s", ""); | |
167 | FOR_EACH_IMPL (impl, 0) | |
168 | printf ("\t%s", impl->name); | |
169 | putchar ('\n'); | |
170 | ||
171 | for (i = 1; i < 8; ++i) | |
172 | { | |
173 | do_test (0, 16 << i, 2048, SMALL_CHAR, MIDDLE_CHAR); | |
174 | do_test (i, 16 << i, 2048, SMALL_CHAR, MIDDLE_CHAR); | |
175 | } | |
176 | ||
177 | for (i = 1; i < 8; ++i) | |
178 | { | |
179 | do_test (i, 64, 256, SMALL_CHAR, MIDDLE_CHAR); | |
180 | do_test (i, 64, 256, SMALL_CHAR, BIG_CHAR); | |
181 | } | |
182 | ||
183 | for (i = 0; i < 32; ++i) | |
184 | { | |
185 | do_test (0, i, i + 1, SMALL_CHAR, MIDDLE_CHAR); | |
186 | do_test (0, i, i + 1, SMALL_CHAR, BIG_CHAR); | |
187 | } | |
188 | ||
189 | for (i = 1; i < 8; ++i) | |
190 | { | |
191 | do_test (0, 16 << i, 2048, 0, MIDDLE_CHAR); | |
192 | do_test (i, 16 << i, 2048, 0, MIDDLE_CHAR); | |
193 | } | |
194 | ||
195 | for (i = 1; i < 8; ++i) | |
196 | { | |
197 | do_test (i, 64, 256, 0, MIDDLE_CHAR); | |
198 | do_test (i, 64, 256, 0, BIG_CHAR); | |
199 | } | |
200 | ||
201 | for (i = 0; i < 32; ++i) | |
202 | { | |
203 | do_test (0, i, i + 1, 0, MIDDLE_CHAR); | |
204 | do_test (0, i, i + 1, 0, BIG_CHAR); | |
205 | } | |
206 | ||
207 | return ret; | |
208 | } | |
209 | ||
210 | #include "../test-skeleton.c" |