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855d1560 UD |
1 | /* Test and measure memchr functions. |
2 | Copyright (C) 1999,2002,2003,2005,2009,2011 Free Software Foundation, Inc. | |
3 | This file is part of the GNU C Library. | |
4 | Written by Jakub Jelinek <jakub@redhat.com>, 1999. | |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
7 | modify it under the terms of the GNU Lesser General Public | |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
10 | ||
11 | The GNU C Library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 PE |
17 | License along with the GNU C Library; if not, see |
18 | <http://www.gnu.org/licenses/>. */ | |
855d1560 UD |
19 | |
20 | #include <assert.h> | |
21 | ||
22 | #define TEST_MAIN | |
23 | #include "test-string.h" | |
24 | ||
25 | typedef char *(*proto_t) (const char *, int); | |
26 | char *simple_rawmemchr (const char *, int); | |
27 | ||
28 | IMPL (simple_rawmemchr, 0) | |
29 | IMPL (rawmemchr, 1) | |
30 | ||
31 | char * | |
32 | simple_rawmemchr (const char *s, int c) | |
33 | { | |
34 | while (1) | |
35 | if (*s++ == (char) c) | |
36 | return (char *) s - 1; | |
37 | return NULL; | |
38 | } | |
39 | ||
40 | static void | |
41 | do_one_test (impl_t *impl, const char *s, int c, char *exp_res) | |
42 | { | |
43 | char *res = CALL (impl, s, c); | |
44 | if (res != exp_res) | |
45 | { | |
46 | error (0, 0, "Wrong result in function %s %p %p", impl->name, | |
47 | res, exp_res); | |
48 | ret = 1; | |
49 | return; | |
50 | } | |
51 | ||
52 | if (HP_TIMING_AVAIL) | |
53 | { | |
54 | hp_timing_t start __attribute ((unused)); | |
55 | hp_timing_t stop __attribute ((unused)); | |
56 | hp_timing_t best_time = ~ (hp_timing_t) 0; | |
57 | size_t i; | |
58 | ||
59 | for (i = 0; i < 32; ++i) | |
60 | { | |
61 | HP_TIMING_NOW (start); | |
62 | CALL (impl, s, c); | |
63 | HP_TIMING_NOW (stop); | |
64 | HP_TIMING_BEST (best_time, start, stop); | |
65 | } | |
66 | ||
67 | printf ("\t%zd", (size_t) best_time); | |
68 | } | |
69 | } | |
70 | ||
71 | static void | |
72 | do_test (size_t align, size_t pos, size_t len, int seek_char) | |
73 | { | |
74 | size_t i; | |
75 | char *result; | |
76 | ||
77 | align &= 7; | |
78 | if (align + len >= page_size) | |
79 | return; | |
80 | ||
81 | for (i = 0; i < len; ++i) | |
82 | { | |
83 | buf1[align + i] = 1 + 23 * i % 127; | |
84 | if (buf1[align + i] == seek_char) | |
85 | buf1[align + i] = seek_char + 1; | |
86 | } | |
87 | buf1[align + len] = 0; | |
88 | ||
89 | assert (pos < len); | |
90 | ||
91 | buf1[align + pos] = seek_char; | |
92 | buf1[align + len] = -seek_char; | |
93 | result = (char *) (buf1 + align + pos); | |
94 | ||
95 | if (HP_TIMING_AVAIL) | |
96 | printf ("Length %4zd, alignment %2zd:", pos, align); | |
97 | ||
98 | FOR_EACH_IMPL (impl, 0) | |
99 | do_one_test (impl, (char *) (buf1 + align), seek_char, result); | |
100 | ||
101 | if (HP_TIMING_AVAIL) | |
102 | putchar ('\n'); | |
103 | } | |
104 | ||
105 | static void | |
106 | do_random_tests (void) | |
107 | { | |
108 | size_t i, j, n, align, pos, len; | |
109 | int seek_char; | |
110 | char *result; | |
111 | unsigned char *p = buf1 + page_size - 512; | |
112 | ||
113 | for (n = 0; n < ITERATIONS; n++) | |
114 | { | |
115 | align = random () & 15; | |
116 | pos = random () & 511; | |
117 | if (pos + align >= 512) | |
118 | pos = 511 - align - (random () & 7); | |
119 | len = random () & 511; | |
120 | if (len + align >= 512) | |
121 | len = 512 - align - (random () & 7); | |
122 | if (pos >= len) | |
123 | continue; | |
124 | seek_char = random () & 255; | |
125 | j = len + align + 64; | |
126 | if (j > 512) | |
127 | j = 512; | |
128 | ||
129 | for (i = 0; i < j; i++) | |
130 | { | |
131 | if (i == pos + align) | |
132 | p[i] = seek_char; | |
133 | else | |
134 | { | |
135 | p[i] = random () & 255; | |
136 | if (i < pos + align && p[i] == seek_char) | |
137 | p[i] = seek_char + 13; | |
138 | } | |
139 | } | |
140 | ||
141 | assert (pos < len); | |
142 | size_t r = random (); | |
143 | if ((r & 31) == 0) | |
144 | len = ~(uintptr_t) (p + align) - ((r >> 5) & 31); | |
145 | result = (char *) (p + pos + align); | |
146 | ||
147 | FOR_EACH_IMPL (impl, 1) | |
148 | if (CALL (impl, (char *) (p + align), seek_char) != result) | |
149 | { | |
150 | error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %d, %zd, %zd) %p != %p, p %p", | |
151 | n, impl->name, align, seek_char, len, pos, | |
152 | CALL (impl, (char *) (p + align), seek_char), | |
153 | result, p); | |
154 | ret = 1; | |
155 | } | |
156 | } | |
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 < 7; ++i) | |
172 | { | |
173 | do_test (0, 16 << i, 2048, 23); | |
174 | do_test (i, 64, 256, 23); | |
175 | do_test (0, 16 << i, 2048, 0); | |
176 | do_test (i, 64, 256, 0); | |
177 | } | |
178 | for (i = 1; i < 32; ++i) | |
179 | { | |
180 | do_test (0, i, i + 1, 23); | |
181 | do_test (0, i, i + 1, 0); | |
182 | } | |
183 | ||
184 | do_random_tests (); | |
185 | return ret; | |
186 | } | |
187 | ||
188 | #include "../test-skeleton.c" |