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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 | #ifdef WIDE | |
21 | # define TEST_NAME "wcsrchr" | |
22 | #else | |
23 | # define TEST_NAME "strrchr" | |
24 | #endif | |
25 | #include "bench-string.h" | |
26 | ||
90d3320d WD |
27 | #define BIG_CHAR MAX_CHAR |
28 | ||
97020474 | 29 | #ifdef WIDE |
97020474 | 30 | # define SIMPLE_STRRCHR simple_wcsrchr |
97020474 SP |
31 | # define SMALL_CHAR 1273 |
32 | #else | |
33 | # define SIMPLE_STRRCHR simple_strrchr | |
97020474 SP |
34 | # define SMALL_CHAR 127 |
35 | #endif | |
36 | ||
37 | typedef CHAR *(*proto_t) (const CHAR *, int); | |
38 | CHAR *SIMPLE_STRRCHR (const CHAR *, int); | |
39 | ||
40 | IMPL (SIMPLE_STRRCHR, 0) | |
41 | IMPL (STRRCHR, 1) | |
42 | ||
43 | CHAR * | |
44 | SIMPLE_STRRCHR (const CHAR *s, int c) | |
45 | { | |
46 | const CHAR *ret = NULL; | |
47 | ||
48 | for (; *s != '\0'; ++s) | |
49 | if (*s == (CHAR) c) | |
50 | ret = s; | |
51 | ||
52 | return (CHAR *) (c == '\0' ? s : ret); | |
53 | } | |
54 | ||
55 | static void | |
56 | do_one_test (impl_t *impl, const CHAR *s, int c, CHAR *exp_res) | |
57 | { | |
58 | CHAR *res = CALL (impl, s, c); | |
44558701 WN |
59 | size_t i, iters = INNER_LOOP_ITERS; |
60 | timing_t start, stop, cur; | |
61 | ||
97020474 SP |
62 | if (res != exp_res) |
63 | { | |
64 | error (0, 0, "Wrong result in function %s %p %p", impl->name, | |
65 | res, exp_res); | |
66 | ret = 1; | |
67 | return; | |
68 | } | |
69 | ||
44558701 WN |
70 | TIMING_NOW (start); |
71 | for (i = 0; i < iters; ++i) | |
97020474 | 72 | { |
44558701 | 73 | CALL (impl, s, c); |
97020474 | 74 | } |
44558701 WN |
75 | TIMING_NOW (stop); |
76 | ||
77 | TIMING_DIFF (cur, start, stop); | |
78 | ||
79 | TIMING_PRINT_MEAN ((double) cur, (double) iters); | |
97020474 SP |
80 | } |
81 | ||
82 | static void | |
83 | do_test (size_t align, size_t pos, size_t len, int seek_char, int max_char) | |
84 | /* For wcsrchr: align here means align not in bytes, | |
85 | but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t)) | |
86 | len for wcschr here isn't in bytes but it's number of wchar_t symbols. */ | |
87 | { | |
88 | size_t i; | |
89 | CHAR *result; | |
90 | CHAR *buf = (CHAR *) buf1; | |
91 | ||
92 | align &= 7; | |
b8cd1c4e | 93 | if ((align + len) * sizeof (CHAR) >= page_size) |
97020474 SP |
94 | return; |
95 | ||
96 | for (i = 0; i < len; ++i) | |
97 | { | |
98 | buf[align + i] = (random () * random ()) & max_char; | |
99 | if (!buf[align + i]) | |
100 | buf[align + i] = (random () * random ()) & max_char; | |
101 | if (!buf[align + i]) | |
102 | buf[align + i] = 1; | |
103 | if ((i > pos || pos >= len) && buf[align + i] == seek_char) | |
104 | buf[align + i] = seek_char + 10 + (random () & 15); | |
105 | } | |
106 | buf[align + len] = 0; | |
107 | ||
108 | if (pos < len) | |
109 | { | |
110 | buf[align + pos] = seek_char; | |
111 | result = (CHAR *) (buf + align + pos); | |
112 | } | |
113 | else if (seek_char == 0) | |
114 | result = (CHAR *) (buf + align + len); | |
115 | else | |
116 | result = NULL; | |
117 | ||
b8cd1c4e | 118 | printf ("Length %4zd, alignment in bytes %2zd:", len, align * sizeof (CHAR)); |
97020474 SP |
119 | |
120 | FOR_EACH_IMPL (impl, 0) | |
121 | do_one_test (impl, (CHAR *) (buf + align), seek_char, result); | |
122 | ||
44558701 | 123 | putchar ('\n'); |
97020474 SP |
124 | } |
125 | ||
126 | int | |
127 | test_main (void) | |
128 | { | |
129 | size_t i; | |
130 | ||
131 | test_init (); | |
132 | ||
133 | printf ("%20s", ""); | |
134 | FOR_EACH_IMPL (impl, 0) | |
135 | printf ("\t%s", impl->name); | |
136 | putchar ('\n'); | |
137 | ||
138 | for (i = 1; i < 8; ++i) | |
139 | { | |
140 | do_test (0, 16 << i, 2048, 23, SMALL_CHAR); | |
141 | do_test (i, 16 << i, 2048, 23, SMALL_CHAR); | |
142 | } | |
143 | ||
144 | for (i = 1; i < 8; ++i) | |
145 | { | |
146 | do_test (i, 64, 256, 23, SMALL_CHAR); | |
147 | do_test (i, 64, 256, 23, BIG_CHAR); | |
148 | } | |
149 | ||
150 | for (i = 0; i < 32; ++i) | |
151 | { | |
152 | do_test (0, i, i + 1, 23, SMALL_CHAR); | |
153 | do_test (0, i, i + 1, 23, BIG_CHAR); | |
154 | } | |
155 | ||
156 | for (i = 1; i < 8; ++i) | |
157 | { | |
158 | do_test (0, 16 << i, 2048, 0, SMALL_CHAR); | |
159 | do_test (i, 16 << i, 2048, 0, SMALL_CHAR); | |
160 | } | |
161 | ||
162 | for (i = 1; i < 8; ++i) | |
163 | { | |
164 | do_test (i, 64, 256, 0, SMALL_CHAR); | |
165 | do_test (i, 64, 256, 0, BIG_CHAR); | |
166 | } | |
167 | ||
168 | for (i = 0; i < 32; ++i) | |
169 | { | |
170 | do_test (0, i, i + 1, 0, SMALL_CHAR); | |
171 | do_test (0, i, i + 1, 0, BIG_CHAR); | |
172 | } | |
173 | ||
174 | return ret; | |
175 | } | |
176 | ||
b598e134 | 177 | #include <support/test-driver.c> |