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97020474 | 1 | /* Measure strlen functions. |
b168057a | 2 | Copyright (C) 2013-2015 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 | |
fcf40ebe SL |
20 | #ifndef WIDE |
21 | # define TEST_NAME "strnlen" | |
22 | #else | |
23 | # define TEST_NAME "wcsnlen" | |
24 | #endif /* WIDE */ | |
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25 | #include "bench-string.h" |
26 | ||
fcf40ebe SL |
27 | #ifndef WIDE |
28 | # define STRNLEN strnlen | |
29 | # define CHAR char | |
30 | # define BIG_CHAR CHAR_MAX | |
31 | # define MIDDLE_CHAR 127 | |
32 | # define SIMPLE_STRNLEN simple_strnlen | |
33 | #else | |
34 | # include <wchar.h> | |
35 | # define STRNLEN wcsnlen | |
36 | # define CHAR wchar_t | |
37 | # define BIG_CHAR WCHAR_MAX | |
38 | # define MIDDLE_CHAR 1121 | |
39 | # define SIMPLE_STRNLEN simple_wcsnlen | |
40 | #endif /* WIDE */ | |
41 | ||
42 | typedef size_t (*proto_t) (const CHAR *, size_t); | |
43 | size_t SIMPLE_STRNLEN (const CHAR *, size_t); | |
44 | ||
45 | IMPL (SIMPLE_STRNLEN, 0) | |
46 | IMPL (STRNLEN, 1) | |
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47 | |
48 | size_t | |
fcf40ebe | 49 | SIMPLE_STRNLEN (const CHAR *s, size_t maxlen) |
97020474 SP |
50 | { |
51 | size_t i; | |
52 | ||
53 | for (i = 0; i < maxlen && s[i]; ++i); | |
54 | return i; | |
55 | } | |
56 | ||
57 | static void | |
fcf40ebe | 58 | do_one_test (impl_t *impl, const CHAR *s, size_t maxlen, size_t exp_len) |
97020474 | 59 | { |
44558701 WN |
60 | size_t len = CALL (impl, s, maxlen), i, iters = INNER_LOOP_ITERS; |
61 | timing_t start, stop, cur; | |
62 | ||
97020474 SP |
63 | if (len != exp_len) |
64 | { | |
65 | error (0, 0, "Wrong result in function %s %zd %zd", impl->name, | |
66 | len, exp_len); | |
67 | ret = 1; | |
68 | return; | |
69 | } | |
70 | ||
44558701 WN |
71 | TIMING_NOW (start); |
72 | for (i = 0; i < iters; ++i) | |
97020474 | 73 | { |
44558701 | 74 | CALL (impl, s, maxlen); |
97020474 | 75 | } |
44558701 WN |
76 | TIMING_NOW (stop); |
77 | ||
78 | TIMING_DIFF (cur, start, stop); | |
79 | ||
80 | TIMING_PRINT_MEAN ((double) cur, (double) iters); | |
97020474 SP |
81 | } |
82 | ||
83 | static void | |
84 | do_test (size_t align, size_t len, size_t maxlen, int max_char) | |
85 | { | |
86 | size_t i; | |
87 | ||
fcf40ebe SL |
88 | align &= 63; |
89 | if ((align + len) * sizeof (CHAR) >= page_size) | |
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90 | return; |
91 | ||
fcf40ebe SL |
92 | CHAR *buf = (CHAR *) (buf1); |
93 | ||
97020474 | 94 | for (i = 0; i < len; ++i) |
fcf40ebe SL |
95 | buf[align + i] = 1 + 7 * i % max_char; |
96 | buf[align + len] = 0; | |
97020474 | 97 | |
44558701 | 98 | printf ("Length %4zd, alignment %2zd:", len, align); |
97020474 SP |
99 | |
100 | FOR_EACH_IMPL (impl, 0) | |
fcf40ebe | 101 | do_one_test (impl, (CHAR *) (buf + align), maxlen, MIN (len, maxlen)); |
97020474 | 102 | |
44558701 | 103 | putchar ('\n'); |
97020474 SP |
104 | } |
105 | ||
106 | int | |
107 | test_main (void) | |
108 | { | |
109 | size_t i; | |
110 | ||
111 | test_init (); | |
112 | ||
113 | printf ("%20s", ""); | |
114 | FOR_EACH_IMPL (impl, 0) | |
115 | printf ("\t%s", impl->name); | |
116 | putchar ('\n'); | |
117 | ||
118 | for (i = 1; i < 8; ++i) | |
119 | { | |
fcf40ebe SL |
120 | do_test (0, i, i - 1, MIDDLE_CHAR); |
121 | do_test (0, i, i, MIDDLE_CHAR); | |
122 | do_test (0, i, i + 1, MIDDLE_CHAR); | |
97020474 SP |
123 | } |
124 | ||
125 | for (i = 1; i < 8; ++i) | |
126 | { | |
fcf40ebe SL |
127 | do_test (i, i, i - 1, MIDDLE_CHAR); |
128 | do_test (i, i, i, MIDDLE_CHAR); | |
129 | do_test (i, i, i + 1, MIDDLE_CHAR); | |
97020474 SP |
130 | } |
131 | ||
132 | for (i = 2; i <= 10; ++i) | |
133 | { | |
fcf40ebe SL |
134 | do_test (0, 1 << i, 5000, MIDDLE_CHAR); |
135 | do_test (1, 1 << i, 5000, MIDDLE_CHAR); | |
97020474 SP |
136 | } |
137 | ||
138 | for (i = 1; i < 8; ++i) | |
fcf40ebe | 139 | do_test (0, i, 5000, BIG_CHAR); |
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140 | |
141 | for (i = 1; i < 8; ++i) | |
fcf40ebe | 142 | do_test (i, i, 5000, BIG_CHAR); |
97020474 SP |
143 | |
144 | for (i = 2; i <= 10; ++i) | |
145 | { | |
fcf40ebe SL |
146 | do_test (0, 1 << i, 5000, BIG_CHAR); |
147 | do_test (1, 1 << i, 5000, BIG_CHAR); | |
97020474 SP |
148 | } |
149 | ||
150 | return ret; | |
151 | } | |
152 | ||
153 | #include "../test-skeleton.c" |