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97020474 | 1 | /* Measure STRCHR functions. |
04277e02 | 2 | Copyright (C) 2013-2019 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 | ||
90d3320d WD |
35 | #define BIG_CHAR MAX_CHAR |
36 | ||
97020474 SP |
37 | #ifndef WIDE |
38 | # ifdef USE_FOR_STRCHRNUL | |
90d3320d | 39 | # undef STRCHR |
97020474 | 40 | # define STRCHR strchrnul |
97020474 | 41 | # define simple_STRCHR simple_STRCHRNUL |
d23d4ef1 | 42 | # endif /* !USE_FOR_STRCHRNUL */ |
97020474 SP |
43 | # define MIDDLE_CHAR 127 |
44 | # define SMALL_CHAR 23 | |
97020474 | 45 | #else |
d23d4ef1 | 46 | # ifdef USE_FOR_STRCHRNUL |
90d3320d | 47 | # undef STRCHR |
d23d4ef1 | 48 | # define STRCHR wcschrnul |
d23d4ef1 | 49 | # define simple_STRCHR simple_WCSCHRNUL |
d23d4ef1 | 50 | # endif /* !USE_FOR_STRCHRNUL */ |
97020474 SP |
51 | # define MIDDLE_CHAR 1121 |
52 | # define SMALL_CHAR 851 | |
d23d4ef1 | 53 | #endif /* WIDE */ |
97020474 SP |
54 | |
55 | #ifdef USE_FOR_STRCHRNUL | |
56 | # define NULLRET(endptr) endptr | |
57 | #else | |
58 | # define NULLRET(endptr) NULL | |
d23d4ef1 | 59 | #endif /* !USE_FOR_STRCHRNUL */ |
97020474 SP |
60 | |
61 | ||
62 | typedef CHAR *(*proto_t) (const CHAR *, int); | |
63 | ||
64 | CHAR * | |
65 | simple_STRCHR (const CHAR *s, int c) | |
66 | { | |
67 | for (; *s != (CHAR) c; ++s) | |
68 | if (*s == '\0') | |
69 | return NULLRET ((CHAR *) s); | |
70 | return (CHAR *) s; | |
71 | } | |
72 | ||
97020474 SP |
73 | IMPL (simple_STRCHR, 0) |
74 | IMPL (STRCHR, 1) | |
75 | ||
76 | static void | |
77 | do_one_test (impl_t *impl, const CHAR *s, int c, const CHAR *exp_res) | |
78 | { | |
44558701 WN |
79 | size_t i, iters = INNER_LOOP_ITERS; |
80 | timing_t start, stop, cur; | |
81 | ||
82 | TIMING_NOW (start); | |
83 | for (i = 0; i < iters; ++i) | |
97020474 | 84 | { |
44558701 | 85 | CALL (impl, s, c); |
97020474 | 86 | } |
44558701 WN |
87 | TIMING_NOW (stop); |
88 | ||
89 | TIMING_DIFF (cur, start, stop); | |
90 | ||
91 | TIMING_PRINT_MEAN ((double) cur, (double) iters); | |
97020474 SP |
92 | } |
93 | ||
94 | static void | |
95 | do_test (size_t align, size_t pos, size_t len, int seek_char, int max_char) | |
96 | /* For wcschr: align here means align not in bytes, | |
97 | but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t)) | |
98 | len for wcschr here isn't in bytes but it's number of wchar_t symbols. */ | |
99 | { | |
100 | size_t i; | |
101 | CHAR *result; | |
102 | CHAR *buf = (CHAR *) buf1; | |
103 | align &= 15; | |
104 | if ((align + len) * sizeof (CHAR) >= page_size) | |
105 | return; | |
106 | ||
107 | for (i = 0; i < len; ++i) | |
108 | { | |
109 | buf[align + i] = 32 + 23 * i % max_char; | |
110 | if (buf[align + i] == seek_char) | |
111 | buf[align + i] = seek_char + 1; | |
112 | else if (buf[align + i] == 0) | |
113 | buf[align + i] = 1; | |
114 | } | |
115 | buf[align + len] = 0; | |
116 | ||
117 | if (pos < len) | |
118 | { | |
119 | buf[align + pos] = seek_char; | |
120 | result = buf + align + pos; | |
121 | } | |
122 | else if (seek_char == 0) | |
123 | result = buf + align + len; | |
124 | else | |
125 | result = NULLRET (buf + align + len); | |
126 | ||
44558701 WN |
127 | printf ("Length %4zd, alignment in bytes %2zd:", |
128 | pos, align * sizeof (CHAR)); | |
97020474 SP |
129 | |
130 | FOR_EACH_IMPL (impl, 0) | |
131 | do_one_test (impl, buf + align, seek_char, result); | |
132 | ||
44558701 | 133 | putchar ('\n'); |
97020474 SP |
134 | } |
135 | ||
136 | int | |
137 | test_main (void) | |
138 | { | |
139 | size_t i; | |
140 | ||
141 | test_init (); | |
142 | ||
143 | printf ("%20s", ""); | |
144 | FOR_EACH_IMPL (impl, 0) | |
145 | printf ("\t%s", impl->name); | |
146 | putchar ('\n'); | |
147 | ||
148 | for (i = 1; i < 8; ++i) | |
149 | { | |
150 | do_test (0, 16 << i, 2048, SMALL_CHAR, MIDDLE_CHAR); | |
151 | do_test (i, 16 << i, 2048, SMALL_CHAR, MIDDLE_CHAR); | |
152 | } | |
153 | ||
154 | for (i = 1; i < 8; ++i) | |
155 | { | |
156 | do_test (i, 64, 256, SMALL_CHAR, MIDDLE_CHAR); | |
157 | do_test (i, 64, 256, SMALL_CHAR, BIG_CHAR); | |
158 | } | |
159 | ||
160 | for (i = 0; i < 32; ++i) | |
161 | { | |
162 | do_test (0, i, i + 1, SMALL_CHAR, MIDDLE_CHAR); | |
163 | do_test (0, i, i + 1, SMALL_CHAR, BIG_CHAR); | |
164 | } | |
165 | ||
166 | for (i = 1; i < 8; ++i) | |
167 | { | |
168 | do_test (0, 16 << i, 2048, 0, MIDDLE_CHAR); | |
169 | do_test (i, 16 << i, 2048, 0, MIDDLE_CHAR); | |
170 | } | |
171 | ||
172 | for (i = 1; i < 8; ++i) | |
173 | { | |
174 | do_test (i, 64, 256, 0, MIDDLE_CHAR); | |
175 | do_test (i, 64, 256, 0, BIG_CHAR); | |
176 | } | |
177 | ||
178 | for (i = 0; i < 32; ++i) | |
179 | { | |
180 | do_test (0, i, i + 1, 0, MIDDLE_CHAR); | |
181 | do_test (0, i, i + 1, 0, BIG_CHAR); | |
182 | } | |
183 | ||
184 | return ret; | |
185 | } | |
186 | ||
b598e134 | 187 | #include <support/test-driver.c> |